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2008 Vol. 38, No. 4
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2008, 38(4): 1-4.
doi: 10.13204/j.gyjz200804001
Abstract:
In order to ameliorate the interior space and overall arrangement of a deficient city and promote functions of city, it is prornoted positively the construction of independent science and technology industry garden areas in China recently. Guangzhou Pilot Test Base Science and Technology area, located in Guangzhou Science City, belongs to this kind of project. We persisted in performing such and idea of keeping harmony between the science and technology industry garden areas with Guangzhou Science City in the whole process of general layout, monomer design and design of dotted botanical gardens.
In order to ameliorate the interior space and overall arrangement of a deficient city and promote functions of city, it is prornoted positively the construction of independent science and technology industry garden areas in China recently. Guangzhou Pilot Test Base Science and Technology area, located in Guangzhou Science City, belongs to this kind of project. We persisted in performing such and idea of keeping harmony between the science and technology industry garden areas with Guangzhou Science City in the whole process of general layout, monomer design and design of dotted botanical gardens.
2008, 38(4): 5-8.
doi: 10.13204/j.gyjz200804002
Abstract:
The basic condition of transport planning is ensuring the transportation safety inside and outside the area to be used. The lanes for trucks must be separated from other lanes clearly. The business vehicle just can enter the outdoor or underground parking lots through the line of Xincheng Road and the central circle transportation square. Therefore, the business vehicles can be separated from trucks. Huawei Company requires the engineers to be in charge of the whole project, whose scheme-preliminary design-detailed design-completion and use should be fully controlled by architects.
The basic condition of transport planning is ensuring the transportation safety inside and outside the area to be used. The lanes for trucks must be separated from other lanes clearly. The business vehicle just can enter the outdoor or underground parking lots through the line of Xincheng Road and the central circle transportation square. Therefore, the business vehicles can be separated from trucks. Huawei Company requires the engineers to be in charge of the whole project, whose scheme-preliminary design-detailed design-completion and use should be fully controlled by architects.
2008, 38(4): 9-12.
doi: 10.13204/j.gyjz200804003
Abstract:
It is this paper generated that multiple solutions through analysis of a virtual old industrial building model, to bring out some thoughts on design of similar projects in engineering practice.
It is this paper generated that multiple solutions through analysis of a virtual old industrial building model, to bring out some thoughts on design of similar projects in engineering practice.
2008, 38(4): 13-16,22.
doi: 10.13204/j.gyjz200804004
Abstract:
It is pointed out through studying on the form of a high-tech research and development office building that design of high-tech research and development office building should be based on holding the essence of function, psychics and environment, and through a design thinking process of analysis, conforming, and expressing, to bring a methodical, systematical, clear, and orderly expressing of its deep essence out of external factors of building form. Then the writer analyzes her three projects of high-tech research and development office building, in order to further expound that the study or the design form of high-tech research and development office building is an organic unification of general character and individuality.
It is pointed out through studying on the form of a high-tech research and development office building that design of high-tech research and development office building should be based on holding the essence of function, psychics and environment, and through a design thinking process of analysis, conforming, and expressing, to bring a methodical, systematical, clear, and orderly expressing of its deep essence out of external factors of building form. Then the writer analyzes her three projects of high-tech research and development office building, in order to further expound that the study or the design form of high-tech research and development office building is an organic unification of general character and individuality.
2008, 38(4): 17-19,43.
doi: 10.13204/j.gyjz200804005
Abstract:
With the progress of the times, the modernized experience commercial shopping centres are rising, which proposes new challenge to commer cial building design. This article takes commercial shopping centre of Suzhou for example, to microscopically analyze accessible and leading design, which is very important in internal and external space of commercial shopping centre, in order to provide certain experience for modem commercial shopping centre design.
With the progress of the times, the modernized experience commercial shopping centres are rising, which proposes new challenge to commer cial building design. This article takes commercial shopping centre of Suzhou for example, to microscopically analyze accessible and leading design, which is very important in internal and external space of commercial shopping centre, in order to provide certain experience for modem commercial shopping centre design.
2008, 38(4): 20-22.
doi: 10.13204/j.gyjz200804006
Abstract:
It is introduced that the schematic design of phase of Nanjing ZTE Research and Industrial Park, and elaborated the reasonable innovative layout planning of the research and industrial park, reasonable arrangement of construction functions, ccnvenient and safe transportation organization, as well as humanism design.
It is introduced that the schematic design of phase of Nanjing ZTE Research and Industrial Park, and elaborated the reasonable innovative layout planning of the research and industrial park, reasonable arrangement of construction functions, ccnvenient and safe transportation organization, as well as humanism design.
2008, 38(4): 23-26.
doi: 10.13204/j.gyjz200804007
Abstract:
technology environment protection as theme, use new Tech and material to integrate and innovate, by appropriate design embody the ideal of people as the foremost, sustainable development for production and environment.
technology environment protection as theme, use new Tech and material to integrate and innovate, by appropriate design embody the ideal of people as the foremost, sustainable development for production and environment.
2008, 38(4): 27-30，49.
doi: 10.13204/j.gyjz200804008
Abstract:
The urban industrial heritage is a complicated topic which needs various perspective. In our country, there is deficient in the studies on the protection and reuse of the urban industrial her itage in the view of a city, especially as viewed from integrating the urban space perspective. It is discussed that the protection and reuse of the urban industrial heritage from perspective of integrating into public recreation spaces system, and is proposed the overall strategy of the urban industrial heritage integrating into public recreation spaces system.
The urban industrial heritage is a complicated topic which needs various perspective. In our country, there is deficient in the studies on the protection and reuse of the urban industrial her itage in the view of a city, especially as viewed from integrating the urban space perspective. It is discussed that the protection and reuse of the urban industrial heritage from perspective of integrating into public recreation spaces system, and is proposed the overall strategy of the urban industrial heritage integrating into public recreation spaces system.
2008, 38(4): 31-35.
doi: 10.13204/j.gyjz200804009
Abstract:
The modified mult-i vertica-l line-element (MVLE) model is solved by means of the parametric variational principle, and nonlinear analysis of short leg wall is performed in detail. The effect of shear lag and shear deformation is considered in this model, which is free of the restriction of plane assumption. Thus, it provides a good method for the shear wall. Finally, a simple example is given.
The modified mult-i vertica-l line-element (MVLE) model is solved by means of the parametric variational principle, and nonlinear analysis of short leg wall is performed in detail. The effect of shear lag and shear deformation is considered in this model, which is free of the restriction of plane assumption. Thus, it provides a good method for the shear wall. Finally, a simple example is given.
2008, 38(4): 36-40.
doi: 10.13204/j.gyjz200804010
Abstract:
On the basis of the experiment on shear failure of 11 L-shaped section broad-limb frame columns subjected to low cyclic loading, the influence of horizontal looading angle, embedded column and ratio of section width to height on its shear behavior has been analyzed as well a selements. shear failure mechanism. From the results it is indicated that L-shaped section broad-limb-columns have higher shear strength with oblique loads. The embedded column with proper bar would reinforce members. shear strength and ductility. The members. brittleness will rise with ratio of its section height to width increasing inthe process of shear failure.
On the basis of the experiment on shear failure of 11 L-shaped section broad-limb frame columns subjected to low cyclic loading, the influence of horizontal looading angle, embedded column and ratio of section width to height on its shear behavior has been analyzed as well a selements. shear failure mechanism. From the results it is indicated that L-shaped section broad-limb-columns have higher shear strength with oblique loads. The embedded column with proper bar would reinforce members. shear strength and ductility. The members. brittleness will rise with ratio of its section height to width increasing inthe process of shear failure.
2008, 38(4): 41-43.
doi: 10.13204/j.gyjz200804011
Abstract:
A simplified softened truss model orig inates from concept of stru-t tie lever and satisfies equilibrium, compatibility, and the constitutive laws of cracked reinforced concrete. It is expounded transitive path and design procedure of the simplified softened truss model. A simplified softened truss model for design and analyses the shear strength of external joint of frmework is proposed, the parameters reviewed include the concrete strength, the amount of vertical hoop and the amount of horizontal hoop. It is therefore recommended that the current shear design procedures for external joint of framework be reformed and utilized to incorporate the actual shear-resisting mechanisms as postulated by the simplified softend truss model, and the calculated values are in good agreement with the check values.
A simplified softened truss model orig inates from concept of stru-t tie lever and satisfies equilibrium, compatibility, and the constitutive laws of cracked reinforced concrete. It is expounded transitive path and design procedure of the simplified softened truss model. A simplified softened truss model for design and analyses the shear strength of external joint of frmework is proposed, the parameters reviewed include the concrete strength, the amount of vertical hoop and the amount of horizontal hoop. It is therefore recommended that the current shear design procedures for external joint of framework be reformed and utilized to incorporate the actual shear-resisting mechanisms as postulated by the simplified softend truss model, and the calculated values are in good agreement with the check values.
2008, 38(4): 44-45，81.
doi: 10.13204/j.gyjz200804012
Abstract:
Considering that some technicians have vague understanding in general safety reserve of reinforced concrete structural member, the ratio of the mean value of resistance to the mean value of load effects K is derived for reinforced concrete flexural members and axial compression members, which comes from concepts of mean value, nominal value and design value of load and mean value, nominal value and design value of strength of material. For flexural members, K is about 118~ 213 and for compression members, it is about 211~ 2181 Through analyzing general safety reserve of reinforced concrete structural member, designers will understand that on the one hand they should comply with code in structural design, on the other hand, they should keep their head in case of slight quality issue or slight overload on structures.
Considering that some technicians have vague understanding in general safety reserve of reinforced concrete structural member, the ratio of the mean value of resistance to the mean value of load effects K is derived for reinforced concrete flexural members and axial compression members, which comes from concepts of mean value, nominal value and design value of load and mean value, nominal value and design value of strength of material. For flexural members, K is about 118~ 213 and for compression members, it is about 211~ 2181 Through analyzing general safety reserve of reinforced concrete structural member, designers will understand that on the one hand they should comply with code in structural design, on the other hand, they should keep their head in case of slight quality issue or slight overload on structures.
2008, 38(4): 46-49.
doi: 10.13204/j.gyjz200804013
Abstract:
After the influencing factors on crack width in reinforced concrete members are analyzed, the formulas to calculate the limited stress of reinforcement to control the crack width are derived, and the succinct formulas of computing allowable stress of reinforcement are put forward by considering the maximum crack width and typical values of influencing factors, also the charts can be made. The control of crack width will be achieved if the stress is less than the allowable value, thus avoid calculating the crack width under service load. An example is used to compare and analysis theoretical results obtained from various codes.
After the influencing factors on crack width in reinforced concrete members are analyzed, the formulas to calculate the limited stress of reinforcement to control the crack width are derived, and the succinct formulas of computing allowable stress of reinforcement are put forward by considering the maximum crack width and typical values of influencing factors, also the charts can be made. The control of crack width will be achieved if the stress is less than the allowable value, thus avoid calculating the crack width under service load. An example is used to compare and analysis theoretical results obtained from various codes.
2008, 38(4): 50-53,60.
doi: 10.13204/j.gyjz200804014
Abstract:
In this paper, from results of K 0 compression tests and slaking tests on both dry clay and saturated clay in Olympic Park, some conclusions are obtained: in e-lgp paragraph, when the normal compressed dry clay is wetted under different stresses, the void ratios all reach compression line of saturated clay; while different over compressed dry clay in the same pre-consolidation pressure is wetted, the void ratios also reach one line approx imately. Concluding from the results of slaking tests, a mathematical description is worked out to describe wetting deformations under K0 compression. Using this mathematic description, a prediction for wetting deformations is given out and it agree well with the tests results.
In this paper, from results of K 0 compression tests and slaking tests on both dry clay and saturated clay in Olympic Park, some conclusions are obtained: in e-lgp paragraph, when the normal compressed dry clay is wetted under different stresses, the void ratios all reach compression line of saturated clay; while different over compressed dry clay in the same pre-consolidation pressure is wetted, the void ratios also reach one line approx imately. Concluding from the results of slaking tests, a mathematical description is worked out to describe wetting deformations under K0 compression. Using this mathematic description, a prediction for wetting deformations is given out and it agree well with the tests results.
2008, 38(4): 54-58.
doi: 10.13204/j.gyjz200804015
Abstract:
To study the effects of reinforcement forms on the load bearing behavior of deep pile caps, through the destructive tests of three nine-pile caps with different forms of reinforcement, the load-bearing mechanism and failure modes of the pile caps. The analytical results proved that the load bearing behavior of pile caps conforms to stru-t and-tie models, reinforcement arranged in bunch can make full use of the tensile performance of reinforcement, mat reinforcement arranged in the middle of pile cap can delay the splitting of concrete struts, and the combination of bunch reinforcement and middle mat reinforcement can increase the bearing capacity of pile caps effectively. Finally, some suggestions on designing pile cap reinforcement are given.
To study the effects of reinforcement forms on the load bearing behavior of deep pile caps, through the destructive tests of three nine-pile caps with different forms of reinforcement, the load-bearing mechanism and failure modes of the pile caps. The analytical results proved that the load bearing behavior of pile caps conforms to stru-t and-tie models, reinforcement arranged in bunch can make full use of the tensile performance of reinforcement, mat reinforcement arranged in the middle of pile cap can delay the splitting of concrete struts, and the combination of bunch reinforcement and middle mat reinforcement can increase the bearing capacity of pile caps effectively. Finally, some suggestions on designing pile cap reinforcement are given.
2008, 38(4): 59-62.
doi: 10.13204/j.gyjz200804016
Abstract:
Through laboratory tests on sandy pebble soil by using the dynamic triaxial test, studies of saturated sandy pebble soil was done. It is analyzed the rule of the damping ratio of sandy pebble soil under different confining pressure, consolidation ratio and vibration frequency. The research makes clear that damping ratio markedly rises with the augmentation of dynamic strain, and falls as the enhance of confining pressure or confining pressure ratio. In addition, result also shows that damping ratio reduces with the accretion of vibration frequency.
Through laboratory tests on sandy pebble soil by using the dynamic triaxial test, studies of saturated sandy pebble soil was done. It is analyzed the rule of the damping ratio of sandy pebble soil under different confining pressure, consolidation ratio and vibration frequency. The research makes clear that damping ratio markedly rises with the augmentation of dynamic strain, and falls as the enhance of confining pressure or confining pressure ratio. In addition, result also shows that damping ratio reduces with the accretion of vibration frequency.
2008, 38(4): 63-67.
doi: 10.13204/j.gyjz200804017
Abstract:
Based on the mass concrete of raft foundation of a high-rise building in a community in Xi. an, it is analyzed the optimization of raw material, confirmation of mix proportion, questions on the aspects of solving the mass concrete of raft foundation. s thermal field by finite difference mothod. It is researched that thermal control measures of the mass concrete of raft foundation of this project by confirmation of thermal control index, thermal control on the pouring of concrete, selection of construction scheme, temperature monitoring.
Based on the mass concrete of raft foundation of a high-rise building in a community in Xi. an, it is analyzed the optimization of raw material, confirmation of mix proportion, questions on the aspects of solving the mass concrete of raft foundation. s thermal field by finite difference mothod. It is researched that thermal control measures of the mass concrete of raft foundation of this project by confirmation of thermal control index, thermal control on the pouring of concrete, selection of construction scheme, temperature monitoring.
2008, 38(4): 68-72112.
doi: 10.13204/j.gyjz200804018
Abstract:
The concrete is considered as a three-phase composite composed of matrix, aggregate and interface between them, and its mesoscale structure is represented with random aggregate model by using Monte-Carlo method. Then, the bilinear damage evolution model is adopted to describe the meso-element. s damage degradation, and the failure mechanism of wet screened, three-graded, four-graded concrete specimens under uniaxial compression is simulated with nonlinear finite element method. Furthermore, size effect on the strength is analyzed in the paper. The results show that the numerical solutions are fitted with experiment results, and the fracture of concrete is generally generated along the bond between aggregate and matrix, Cracks are extended in a direction parallel to the maximum compression stress.
The concrete is considered as a three-phase composite composed of matrix, aggregate and interface between them, and its mesoscale structure is represented with random aggregate model by using Monte-Carlo method. Then, the bilinear damage evolution model is adopted to describe the meso-element. s damage degradation, and the failure mechanism of wet screened, three-graded, four-graded concrete specimens under uniaxial compression is simulated with nonlinear finite element method. Furthermore, size effect on the strength is analyzed in the paper. The results show that the numerical solutions are fitted with experiment results, and the fracture of concrete is generally generated along the bond between aggregate and matrix, Cracks are extended in a direction parallel to the maximum compression stress.
2008, 38(4): 73-76.
doi: 10.13204/j.gyjz200804019
Abstract:
To study the thermal creep strain of FRP bars in fire, experiment are carried out on 72 (21groups) prestressing GFRP bars exposed to high temperature under axial load. The parameters considered are temperature variation and stress level. The thermal creep strain rate and the tensile strength of GFRP bars are investigated through test. The test results are obtained during high temperature exposure. The thermal creep strain of GFRP bars expands with the r ise of temperature and stress level. The results can be applied to calculate the prestress for ce loss of prestressing GFRP reinforced concrete structures in fire.
To study the thermal creep strain of FRP bars in fire, experiment are carried out on 72 (21groups) prestressing GFRP bars exposed to high temperature under axial load. The parameters considered are temperature variation and stress level. The thermal creep strain rate and the tensile strength of GFRP bars are investigated through test. The test results are obtained during high temperature exposure. The thermal creep strain of GFRP bars expands with the r ise of temperature and stress level. The results can be applied to calculate the prestress for ce loss of prestressing GFRP reinforced concrete structures in fire.
2008, 38(4): 77-81.
doi: 10.13204/j.gyjz200804020
Abstract:
In order to investigate the stress-strain relationship and Poisson. s ratio of the polyurethane foam material, the quas-i static tensile, compression, and shear test was conducted at room temperature with the loading speed 2mmPmin and the results show that, the material has an excellent ductility behavior on compression, but on tension and shearing, it. s obviously brittle; the Poisson. s ratio is somewhat discrete, it. s about 0. 25. In addition, based on it. s stress-strain relationship curves, a simple fitting constitutive relation is given. By the constitutive relation a FEM model is got to simulate the experiment, and the results show the validity of the constitutive relation model.
In order to investigate the stress-strain relationship and Poisson. s ratio of the polyurethane foam material, the quas-i static tensile, compression, and shear test was conducted at room temperature with the loading speed 2mmPmin and the results show that, the material has an excellent ductility behavior on compression, but on tension and shearing, it. s obviously brittle; the Poisson. s ratio is somewhat discrete, it. s about 0. 25. In addition, based on it. s stress-strain relationship curves, a simple fitting constitutive relation is given. By the constitutive relation a FEM model is got to simulate the experiment, and the results show the validity of the constitutive relation model.
2008, 38(4): 82-86.
doi: 10.13204/j.gyjz200804021
Abstract:
A computational model of buckling load of steel plane frames with sem-i rigid connections is put forward through establishing differential equations in buckling of the structures for each member of the structures and considering all the boundary conditions. The program is further developed and computaional results are presented. The results show that effect of joint flexibility and elastic bracing on buckling load of the structures is pronounced, which is valuable for considering the effect in design of steel frames against buckling of the whole structure. It should be especially noted that the buckling load or the equivalent buckling length factor of the plane steel structures are greatly influenced by the distribution of loads or ratio of loads, which was not considered well in present specification. The results show the other fact that effect of the sem-i rigid connections and the stiffness of bracing elements on the buckling load of the structures (or the factor of equivalent buckling length ) has a evident effect extent or limitation which show that variation of stiffness of sem-i rigid connections and the stiffness of bracing elements will have no effect on the buckling length when the stiffness of sem-i rigid connection or the bracing elements exceed a limited extent or value.
A computational model of buckling load of steel plane frames with sem-i rigid connections is put forward through establishing differential equations in buckling of the structures for each member of the structures and considering all the boundary conditions. The program is further developed and computaional results are presented. The results show that effect of joint flexibility and elastic bracing on buckling load of the structures is pronounced, which is valuable for considering the effect in design of steel frames against buckling of the whole structure. It should be especially noted that the buckling load or the equivalent buckling length factor of the plane steel structures are greatly influenced by the distribution of loads or ratio of loads, which was not considered well in present specification. The results show the other fact that effect of the sem-i rigid connections and the stiffness of bracing elements on the buckling load of the structures (or the factor of equivalent buckling length ) has a evident effect extent or limitation which show that variation of stiffness of sem-i rigid connections and the stiffness of bracing elements will have no effect on the buckling length when the stiffness of sem-i rigid connection or the bracing elements exceed a limited extent or value.
2008, 38(4): 87-90.
doi: 10.13204/j.gyjz200804022
Abstract:
According to static load test on a beam-column connection by top and seat angles with stiffer and double web angles, it is analyzed that the stresses on the top and seat angles, stiffer, web angles, beam flange and web, column flange and web. The static behavior and failure mode of the sem-i rigid connection are determined, and the M-H relation, the initial stiffness, the ultimate bearing capacity and the ultimate rotation are obtained. The stiffeners and other factors which influence the static behavior of the connection are discussed.
According to static load test on a beam-column connection by top and seat angles with stiffer and double web angles, it is analyzed that the stresses on the top and seat angles, stiffer, web angles, beam flange and web, column flange and web. The static behavior and failure mode of the sem-i rigid connection are determined, and the M-H relation, the initial stiffness, the ultimate bearing capacity and the ultimate rotation are obtained. The stiffeners and other factors which influence the static behavior of the connection are discussed.
2008, 38(4): 91-94,76.
doi: 10.13204/j.gyjz200804023
Abstract:
The tensegrity is a key problem attracting much attention of the research of structure in recent years; but the application is difficult because of the rigid definition of tensegrity. It is briefly discussed the definition and characteristics of tensegrity, then not only designing tensegrity model rigidly according to tensegrity definition, but it also simulates the assemblage process of the complex model on the basis of manufacturing the simple model; the most of all, the rational hollow spherical joint is designed, which can be adjusted and disassembled.
The tensegrity is a key problem attracting much attention of the research of structure in recent years; but the application is difficult because of the rigid definition of tensegrity. It is briefly discussed the definition and characteristics of tensegrity, then not only designing tensegrity model rigidly according to tensegrity definition, but it also simulates the assemblage process of the complex model on the basis of manufacturing the simple model; the most of all, the rational hollow spherical joint is designed, which can be adjusted and disassembled.
2008, 38(4): 95-97103.
doi: 10.13204/j.gyjz200804024
Abstract:
Using finite element method, it is analysed and studied the secondary stress in the member bar of cold-formed thin-wall steel truss due to node geometric flaw. It is also analysed that the secondary stress values and regularities of distribution as well as the reason of generating secondary stress and its effect on cold-formed thin-wall steel truss structure.
Using finite element method, it is analysed and studied the secondary stress in the member bar of cold-formed thin-wall steel truss due to node geometric flaw. It is also analysed that the secondary stress values and regularities of distribution as well as the reason of generating secondary stress and its effect on cold-formed thin-wall steel truss structure.
2008, 38(4): 98-103.
doi: 10.13204/j.gyjz200804025
Abstract:
Eurocode 2 is code for the design of concrete structures, and its part 112 is the only design guideline for fire resistance on reinforced concrete (RC) and prestressed concrete(PC) structures in Europe. There are 6 sections within the EC2-1-2, including General, Basic principles, Material properties, Structural fire design, Protective layers and Annexes. The contents of effects of actions design resistance in the fire situation, reduction of material properties subjected to fire and fire design method based on tabulated data are briefly introduced. The issues that to be further done are also presented. It can be served as reference for RC and PC structural fire design and for revising relevant standards in China.
Eurocode 2 is code for the design of concrete structures, and its part 112 is the only design guideline for fire resistance on reinforced concrete (RC) and prestressed concrete(PC) structures in Europe. There are 6 sections within the EC2-1-2, including General, Basic principles, Material properties, Structural fire design, Protective layers and Annexes. The contents of effects of actions design resistance in the fire situation, reduction of material properties subjected to fire and fire design method based on tabulated data are briefly introduced. The issues that to be further done are also presented. It can be served as reference for RC and PC structural fire design and for revising relevant standards in China.
2008, 38(4): 104-108.
doi: 10.13204/j.gyjz200804026
Abstract:
The retrofit technology by carbon fiber cables with external prestress is very suitable for strengthening concrete beams in corrosive and wet environments. It is compared and analyzed that the performance index es of the strengthened beams, as well as themethods of applying the external prestress to carbon fiber cables, based on tests of two concrete beams strengthened by carbon fiber cables with external prestress, an outlook for subsequent study is also given.
The retrofit technology by carbon fiber cables with external prestress is very suitable for strengthening concrete beams in corrosive and wet environments. It is compared and analyzed that the performance index es of the strengthened beams, as well as themethods of applying the external prestress to carbon fiber cables, based on tests of two concrete beams strengthened by carbon fiber cables with external prestress, an outlook for subsequent study is also given.
2008, 38(4): 109-112.
doi: 10.13204/j.gyjz200804027
Abstract:
Harbin Yinhe Hotel is a 22-story high rise building, its annex is a 6-story structure with a 1-story basement, and its tower has a 3-story basement. On the right of the annex is a club of 4-story frame structure. The tower is a RC frameshear wall structure, and the annex is a RC frame structure. In order to make the 6-story annex surrounded by the high rise building and the club becoming a 22-story structure, the original pile foundation under the column is reinforced by casting new concrete and placing reinforcements around the column to forming a big pile. The original independent foundation under the column is replaced by the new pile foundation, and the original frame columns are strengthened. For the column grids of annex and new structure are different, the transfer beam structure is set up on the top of 7th floor. The solution for some key problems in design of the reconstruction project is introduced, which can be served as reference for similar projects.
Harbin Yinhe Hotel is a 22-story high rise building, its annex is a 6-story structure with a 1-story basement, and its tower has a 3-story basement. On the right of the annex is a club of 4-story frame structure. The tower is a RC frameshear wall structure, and the annex is a RC frame structure. In order to make the 6-story annex surrounded by the high rise building and the club becoming a 22-story structure, the original pile foundation under the column is reinforced by casting new concrete and placing reinforcements around the column to forming a big pile. The original independent foundation under the column is replaced by the new pile foundation, and the original frame columns are strengthened. For the column grids of annex and new structure are different, the transfer beam structure is set up on the top of 7th floor. The solution for some key problems in design of the reconstruction project is introduced, which can be served as reference for similar projects.
2008, 38(4): 113-115108.
doi: 10.13204/j.gyjz200804028
Abstract:
During reforming the mill building of RC bent frame, it is solved effectively the problems and the contradiction between the production and construction by the following techniques: the scheme of cutting column with beam supported; according to the features of the project, using root pile to strengthen the foundation; using cap beam to reinforce column base; steel plate is also used to strengthen corbel and column flange; and using the feature of I-section column to cut web and support the column by steel joist.
During reforming the mill building of RC bent frame, it is solved effectively the problems and the contradiction between the production and construction by the following techniques: the scheme of cutting column with beam supported; according to the features of the project, using root pile to strengthen the foundation; using cap beam to reinforce column base; steel plate is also used to strengthen corbel and column flange; and using the feature of I-section column to cut web and support the column by steel joist.
2008, 38(4): 116-118.
doi: 10.13204/j.gyjz200804029
Abstract:
Based on the analysis of integral collapse of a reinforced concrete silo, through a series of finite element analysis examples, it is discussed the interaction mechanism of the superstructure and the foundation for the reinforced concrete silo, and is proposed some individual viewpoints for the present design method. At last, it is put forward that some suggestions on this question of this structure design.
Based on the analysis of integral collapse of a reinforced concrete silo, through a series of finite element analysis examples, it is discussed the interaction mechanism of the superstructure and the foundation for the reinforced concrete silo, and is proposed some individual viewpoints for the present design method. At last, it is put forward that some suggestions on this question of this structure design.
2008, 38(4): 119-123，86.
doi: 10.13204/j.gyjz200804030
Abstract:
The design and method of staircase between the roof of the original building and the second floor of the new added building are presented, that is: put up pos-t built suspended beams perpendicular to the ou-t jacketing frame beams, and then build hanger rods from them, which makes hanger rods vertical load-carrying elements and support the staircase. The staircase linking the original building and the new added floor in Suifenhe Qingyun Market is constructed in this way.
The design and method of staircase between the roof of the original building and the second floor of the new added building are presented, that is: put up pos-t built suspended beams perpendicular to the ou-t jacketing frame beams, and then build hanger rods from them, which makes hanger rods vertical load-carrying elements and support the staircase. The staircase linking the original building and the new added floor in Suifenhe Qingyun Market is constructed in this way.
2008, 38(4): 124-126.
doi: 10.13204/j.gyjz200804031
Abstract:
It is put forward a new design thought ) ) ) / infiltration and splicing0, directed towards the condition in a modern city, where the thymogenic space is fading away gradually. It is considered that the new design thought contains three levels: vocabulary, matter and spirit. They will reach to a balanceable mode, in which practical space, perceptive space and ex istence space will reach to the progressive and uniform condition. It is also analyzed the exertion of the new design thought about building thymogenic space in the modern city. through three instances such as the design of west gate of Xihu garden etcetera.
It is put forward a new design thought ) ) ) / infiltration and splicing0, directed towards the condition in a modern city, where the thymogenic space is fading away gradually. It is considered that the new design thought contains three levels: vocabulary, matter and spirit. They will reach to a balanceable mode, in which practical space, perceptive space and ex istence space will reach to the progressive and uniform condition. It is also analyzed the exertion of the new design thought about building thymogenic space in the modern city. through three instances such as the design of west gate of Xihu garden etcetera.
