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2004 Vol. 34, No. 8
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2004, 34(8): 1-3,24.
doi: 10.13204/j.gyjz200408001
Abstract:
Aiming at the phenomenon of the current false ecological industrial areas, the theoretical basis for the ecoplanning of the industrial areas was expounded. Combined the city planning discipline characteristics, the contents and emphasis of the eco-planning of industrial areas were also analyzed.
Aiming at the phenomenon of the current false ecological industrial areas, the theoretical basis for the ecoplanning of the industrial areas was expounded. Combined the city planning discipline characteristics, the contents and emphasis of the eco-planning of industrial areas were also analyzed.
2004, 34(8): 4-10.
doi: 10.13204/j.gyjz200408002
Abstract:
Based on review of industrial architecture creations under the effect of modernism, and analysis of the contemporary pluralistic industrial architectures, the pluralistic trend of contemporary industrial ar chitectures in the world is recognised. And the quality of architectural creation should be improved through paying much attention to the study of industrial architecture typology and the application of the latest scientific and technical results.
Based on review of industrial architecture creations under the effect of modernism, and analysis of the contemporary pluralistic industrial architectures, the pluralistic trend of contemporary industrial ar chitectures in the world is recognised. And the quality of architectural creation should be improved through paying much attention to the study of industrial architecture typology and the application of the latest scientific and technical results.
2004, 34(8): 11-13,21.
doi: 10.13204/j.gyjz200408003
Abstract:
The compositions and characteristics of a factory environment, and the effect of the factory on its environment are analyzed. And the significance of the factory. s general layout design to the factory ecoenvironment protection and the susteinable development.
The compositions and characteristics of a factory environment, and the effect of the factory on its environment are analyzed. And the significance of the factory. s general layout design to the factory ecoenvironment protection and the susteinable development.
2004, 34(8): 14-16,18.
doi: 10.13204/j.gyjz200408004
Abstract:
An analytic model combining attribute mathematics and setting value statistic and analysis of hierarchy has been established.The model can be used for the comprehensive appraisement and optimum seeking for an industrial building scheme from a number of influencing factors.The feasibility of the model and method is verified with an example.
An analytic model combining attribute mathematics and setting value statistic and analysis of hierarchy has been established.The model can be used for the comprehensive appraisement and optimum seeking for an industrial building scheme from a number of influencing factors.The feasibility of the model and method is verified with an example.
2004, 34(8): 17-18.
doi: 10.13204/j.gyjz200408005
Abstract:
In this paper, the regularities and characteristics of airflow in space of industrial architecture are investigated,and the reasonable airflow distribution for industrial architecture and its affect factors are also discussed, which provide a theoretic reference for design and evaluation of spatial airflow distribution of industral architecture.
In this paper, the regularities and characteristics of airflow in space of industrial architecture are investigated,and the reasonable airflow distribution for industrial architecture and its affect factors are also discussed, which provide a theoretic reference for design and evaluation of spatial airflow distribution of industral architecture.
2004, 34(8): 19-21.
doi: 10.13204/j.gyjz200408006
Abstract:
It is briefly described that the features of the master plan design for Beijing Guangda Pharmaceutical Plant and the technical specification requirements for pharmaceutical industry.
It is briefly described that the features of the master plan design for Beijing Guangda Pharmaceutical Plant and the technical specification requirements for pharmaceutical industry.
2004, 34(8): 22-24.
doi: 10.13204/j.gyjz200408007
Abstract:
Most of the architectural designs overweight the form and structure, and neglect the detailed design for the appearance of the building to a certain degree, thereby such kinds of designs make the appearance of the building being devoid of the character of refinement.In allusion to this phenomenon, this article tries to explore such kind of design laying stress on the materials, components and structure of the facade, and analyzes and discusses such kind of design method which reflects the refinement of the appearance of the building by the detailed design for the facade, through practical project designs.
Most of the architectural designs overweight the form and structure, and neglect the detailed design for the appearance of the building to a certain degree, thereby such kinds of designs make the appearance of the building being devoid of the character of refinement.In allusion to this phenomenon, this article tries to explore such kind of design laying stress on the materials, components and structure of the facade, and analyzes and discusses such kind of design method which reflects the refinement of the appearance of the building by the detailed design for the facade, through practical project designs.
2004, 34(8): 25-27,50.
doi: 10.13204/j.gyjz200408008
Abstract:
Starting with the reconstruction of old industrial buildings located on south bank of Suzhou River, the authors put forward some questions about inheritance and development of humanistic history, cultural circumstance, and city imagebuilding,which should be taken into account during the planning and reform of old urban areas.
Starting with the reconstruction of old industrial buildings located on south bank of Suzhou River, the authors put forward some questions about inheritance and development of humanistic history, cultural circumstance, and city imagebuilding,which should be taken into account during the planning and reform of old urban areas.
2004, 34(8): 28-30.
doi: 10.13204/j.gyjz200408009
Abstract:
By means of wind tunnel test, the wind actions on a uniform rectangle megastructure were studied.The reasonable distribution law of wind loading on the surface of a building could be obtained, meanwhile the wind pressure of the big vestibule was analyzed.The results given by the paper might be a significant guide to wind resistance design of a structure.
By means of wind tunnel test, the wind actions on a uniform rectangle megastructure were studied.The reasonable distribution law of wind loading on the surface of a building could be obtained, meanwhile the wind pressure of the big vestibule was analyzed.The results given by the paper might be a significant guide to wind resistance design of a structure.
2004, 34(8): 31-32,58.
doi: 10.13204/j.gyjz200408010
Abstract:
One kind of CFRP bars produced in China is used to replace normal steel reinforcing bars in unbonded prestressed concrete beams and the corresponding anchorage devices are developed at the same time. Experimental studies on behaviors, prestressing loss, norma-l section bending capacity of the unbonded prestressed concrete beams reinforced with CFRP bars are carried out, and corresponding conclusions are got.
One kind of CFRP bars produced in China is used to replace normal steel reinforcing bars in unbonded prestressed concrete beams and the corresponding anchorage devices are developed at the same time. Experimental studies on behaviors, prestressing loss, norma-l section bending capacity of the unbonded prestressed concrete beams reinforced with CFRP bars are carried out, and corresponding conclusions are got.
2004, 34(8): 33-35.
doi: 10.13204/j.gyjz200408011
Abstract:
Time and depth are adopted to analyse excess pore water pressure caused by static pressed pile in soft clay, and a 3D analytical formula is achieved. Based on the effective stress principle and according to dissipation of excess pore water pressure, consolidation of the clay around the pile and failure mode of pile- soil interface, an analytical solution to predict time- dependent ultimate bearing capacity of the driven pile is obtained. Results from the presented analytical solution are in agreement with those of the site tests.
Time and depth are adopted to analyse excess pore water pressure caused by static pressed pile in soft clay, and a 3D analytical formula is achieved. Based on the effective stress principle and according to dissipation of excess pore water pressure, consolidation of the clay around the pile and failure mode of pile- soil interface, an analytical solution to predict time- dependent ultimate bearing capacity of the driven pile is obtained. Results from the presented analytical solution are in agreement with those of the site tests.
2004, 34(8): 36-37,69.
doi: 10.13204/j.gyjz200408012
Abstract:
The parameters of the pipeline- soil system have the dynamic character under the impetus loads. So the Eular-Bernoulli elastic beam model under traffic loads is set up. Firstly, the analytic solution of the coupling response considering the changing parameters with the space is brought forward; and the analytic solution for the changing parameters with the time is put forward subsequently. So a compact and perspicuous method for the research on the mechanical behaviors of the underground pipelines under traffic loads is provided.
The parameters of the pipeline- soil system have the dynamic character under the impetus loads. So the Eular-Bernoulli elastic beam model under traffic loads is set up. Firstly, the analytic solution of the coupling response considering the changing parameters with the space is brought forward; and the analytic solution for the changing parameters with the time is put forward subsequently. So a compact and perspicuous method for the research on the mechanical behaviors of the underground pipelines under traffic loads is provided.
2004, 34(8): 38-40.
doi: 10.13204/j.gyjz200408013
Abstract:
Through an experimental research on thirty specimens of steel reinforced concrete and steel fiber reinforced concrete (SFRC)two-pile thick cap of 1∶5 model ratio, the main factors that influence the ultimate bearing capacity of SFRC two-pile thick cap are analyzed systematically.The calculation formula of the ultimate bearing capacity of SFRC caps is developed by method of the least-square.By comparing with common reinforced concrete thick caps, their ultimate bearing capacity is raised remarkably.
Through an experimental research on thirty specimens of steel reinforced concrete and steel fiber reinforced concrete (SFRC)two-pile thick cap of 1∶5 model ratio, the main factors that influence the ultimate bearing capacity of SFRC two-pile thick cap are analyzed systematically.The calculation formula of the ultimate bearing capacity of SFRC caps is developed by method of the least-square.By comparing with common reinforced concrete thick caps, their ultimate bearing capacity is raised remarkably.
2004, 34(8): 41-43.
doi: 10.13204/j.gyjz200408014
Abstract:
The property of expansion and drying shrinkage of small concrete hollow blocks is one of the main causes that results in cracks of a block building; and people have attached importance to their harm. Tests were conducted with walls of the same dimension in a room designed by ourselves to ensure invariable relative humidity. Through the tests, the influence of relative humidity, time, duration surfacing materials on deformation of block walls was investigated. Also, the shrinkage ratio of block walls was achieved under 65% relative humidity and 45% relative humidity, which may be a reference for the design of such walls.
The property of expansion and drying shrinkage of small concrete hollow blocks is one of the main causes that results in cracks of a block building; and people have attached importance to their harm. Tests were conducted with walls of the same dimension in a room designed by ourselves to ensure invariable relative humidity. Through the tests, the influence of relative humidity, time, duration surfacing materials on deformation of block walls was investigated. Also, the shrinkage ratio of block walls was achieved under 65% relative humidity and 45% relative humidity, which may be a reference for the design of such walls.
2004, 34(8): 44-46,61.
doi: 10.13204/j.gyjz200408015
Abstract:
At 80 e curing condition, alkali aggregate reaction expansion could be long- term effectively inhibited by Li2CO3 at the alkali content of 21 5%. Also, the higher the alkali reactivity of the aggregate was, the better the inhibiting effect of Li2CO3 showed.To the mortars with Li2CO3 at the same Li/Na molar ratio, the inhibiting effect was raised when the alkali reactivity of the aggregate was increased. To the mortars with zeolitization perlite, if alkali aggregate reaction expansion was inhibited effectively, the effect of Li2CO3 on expansion was not raised correspondingly when the LiPNa molar ratio was further increased. In addition, both the compressive strength and the flexural strength of the mortars would decrease when Li2CO3 was added. The more Li2CO3 was added, the more the strength would decrease. At the same alkali content conditions, the initial and final setting time of cement was shortened when Li2CO3 was added and the higher the LiPNa molar ratio of Li2CO3 was, the shorter the setting time was.
At 80 e curing condition, alkali aggregate reaction expansion could be long- term effectively inhibited by Li2CO3 at the alkali content of 21 5%. Also, the higher the alkali reactivity of the aggregate was, the better the inhibiting effect of Li2CO3 showed.To the mortars with Li2CO3 at the same Li/Na molar ratio, the inhibiting effect was raised when the alkali reactivity of the aggregate was increased. To the mortars with zeolitization perlite, if alkali aggregate reaction expansion was inhibited effectively, the effect of Li2CO3 on expansion was not raised correspondingly when the LiPNa molar ratio was further increased. In addition, both the compressive strength and the flexural strength of the mortars would decrease when Li2CO3 was added. The more Li2CO3 was added, the more the strength would decrease. At the same alkali content conditions, the initial and final setting time of cement was shortened when Li2CO3 was added and the higher the LiPNa molar ratio of Li2CO3 was, the shorter the setting time was.
2004, 34(8): 47-50.
doi: 10.13204/j.gyjz200408016
Abstract:
Concepts about admitting carbonation depth and admitting corrosion rate and dynamic reliability of members for concrete structures are presented on the basis of the analysis for the influence of carbonation of concrete and reinforcement corrosion on the members for concrete structures. Through the research for the key factors affecting the dynamic reliability,a method to institute the reliability function is given.
Concepts about admitting carbonation depth and admitting corrosion rate and dynamic reliability of members for concrete structures are presented on the basis of the analysis for the influence of carbonation of concrete and reinforcement corrosion on the members for concrete structures. Through the research for the key factors affecting the dynamic reliability,a method to institute the reliability function is given.
2004, 34(8): 51-52,35.
doi: 10.13204/j.gyjz200408017
Abstract:
A full-size model test of bonding behavior as carried out according to the strengthening a continuous box girder bridge with partially bonded anchoring system; the anchoring behavior of the system and the action of the anchor-bearing plate were also analyzed, which provides a basis for the design and construction of strengthening bridges.
A full-size model test of bonding behavior as carried out according to the strengthening a continuous box girder bridge with partially bonded anchoring system; the anchoring behavior of the system and the action of the anchor-bearing plate were also analyzed, which provides a basis for the design and construction of strengthening bridges.
2004, 34(8): 53-55.
doi: 10.13204/j.gyjz200408018
Abstract:
The model analysis of the design of large platform structure shall not be ignored.An actual example of testing table for impedance of some academy has been studied by use of dynamic finite element program.A primary analysis of the model and harmonic response, were done with an emphasis on its experimental study.The experiment proves that the program of the model should be considered in the design of large platform and the calculation in this paper has a higher accuracy.
The model analysis of the design of large platform structure shall not be ignored.An actual example of testing table for impedance of some academy has been studied by use of dynamic finite element program.A primary analysis of the model and harmonic response, were done with an emphasis on its experimental study.The experiment proves that the program of the model should be considered in the design of large platform and the calculation in this paper has a higher accuracy.
2004, 34(8): 56-58.
doi: 10.13204/j.gyjz200408019
Abstract:
A analysis method is provided for interaction between foundation excavation and adjacent building. Some problems and their treating measures are discussed in the process of constructing a building.
A analysis method is provided for interaction between foundation excavation and adjacent building. Some problems and their treating measures are discussed in the process of constructing a building.
2004, 34(8): 59-61.
doi: 10.13204/j.gyjz200408020
Abstract:
It is introduced that the process of membrane structure design of NSFC, including the shape finding analysis, load analysis, cutting design of membrane. The steel structure design and the joints design of a cable and a membrane are also discussed in this paper. This structure plays a valuable role to the unborn similar double-layer membrane structures.
It is introduced that the process of membrane structure design of NSFC, including the shape finding analysis, load analysis, cutting design of membrane. The steel structure design and the joints design of a cable and a membrane are also discussed in this paper. This structure plays a valuable role to the unborn similar double-layer membrane structures.
2004, 34(8): 62-65.
doi: 10.13204/j.gyjz200408021
Abstract:
Tests on sixteen concrete-filled steel RHS(Rectangular Hollow Section) stub columns were reported. The main objective was to investigate the influence of concrete compaction on the section capacities and modulus of concrete-filled steel RHS stub columns. It was found that better compaction of concrete resulted in higher values of the section capacity and higher elastic modulus of concrete-filled steel tubes. The tests show the importance of good concrete compaction for concretefilled steel RHS stub columns.
Tests on sixteen concrete-filled steel RHS(Rectangular Hollow Section) stub columns were reported. The main objective was to investigate the influence of concrete compaction on the section capacities and modulus of concrete-filled steel RHS stub columns. It was found that better compaction of concrete resulted in higher values of the section capacity and higher elastic modulus of concrete-filled steel tubes. The tests show the importance of good concrete compaction for concretefilled steel RHS stub columns.
2004, 34(8): 66-69.
doi: 10.13204/j.gyjz200408022
Abstract:
Introducing the concept of unbalanced forces between internal forces and external loads, an approach for analysis of nonlinear response of steel frames subjected to fire is developed.The actual temperature elevation of structures in real fires can be followed by this approach. Both the temperature-dependent material nonlinear ity and geometrical nonlinearity are taken into account. The non-uniform profile of temperature across the cross section of structural members is also considered.The fire-resistant test on three models of steel frames carried out at Tongji University in 1996 is presented.The validity and effectiveness of the approach is verified by good prediction to the nonliear behavior of steel frames tested in fire.
Introducing the concept of unbalanced forces between internal forces and external loads, an approach for analysis of nonlinear response of steel frames subjected to fire is developed.The actual temperature elevation of structures in real fires can be followed by this approach. Both the temperature-dependent material nonlinear ity and geometrical nonlinearity are taken into account. The non-uniform profile of temperature across the cross section of structural members is also considered.The fire-resistant test on three models of steel frames carried out at Tongji University in 1996 is presented.The validity and effectiveness of the approach is verified by good prediction to the nonliear behavior of steel frames tested in fire.
2004, 34(8): 70-72,89.
doi: 10.13204/j.gyjz200408023
Abstract:
Bending tests of twelve steel tube confined high strength concrete elements have been carried out. Flexural behavior of the steel tube confined high strength concrete element was investigated. The strip method was adopted to calculate the section moment-curvature relationship curves of the specimens. Based on the test results the moment-curvature relationship curve was simplified to a trip-linear model. The equation of the model was expressed with section bending stiffness and the formula of calculating the flexural capacity of steel tube confined high strength concrete element was given.
Bending tests of twelve steel tube confined high strength concrete elements have been carried out. Flexural behavior of the steel tube confined high strength concrete element was investigated. The strip method was adopted to calculate the section moment-curvature relationship curves of the specimens. Based on the test results the moment-curvature relationship curve was simplified to a trip-linear model. The equation of the model was expressed with section bending stiffness and the formula of calculating the flexural capacity of steel tube confined high strength concrete element was given.
2004, 34(8): 73-77.
doi: 10.13204/j.gyjz200408024
Abstract:
Due to the unique mechanics characters, the analysis and design process of membrane structure is quite different from traditional structures. In this paper, some key problems of membrane structure analysis were discussed. The first question is how to determine the load case, especially for wind effects. Then, the structural analysis methods and some questions should be note were presented. It also introduced some design software of membrane structures. Moreover, it is recommended in this paper that the specified maximum displacement and stress of membrane structure, which can be used to assess the structural performance and select cable and membrane members.
Due to the unique mechanics characters, the analysis and design process of membrane structure is quite different from traditional structures. In this paper, some key problems of membrane structure analysis were discussed. The first question is how to determine the load case, especially for wind effects. Then, the structural analysis methods and some questions should be note were presented. It also introduced some design software of membrane structures. Moreover, it is recommended in this paper that the specified maximum displacement and stress of membrane structure, which can be used to assess the structural performance and select cable and membrane members.
2004, 34(8): 78-80,92.
doi: 10.13204/j.gyjz200408025
Abstract:
The formula of the additional earthquake actions of the water tower with supporters has been developed by the hydromechanics theory, and a part of statistical results relating to response spectra of magnified coefficient has been presented.The ideas proposed in this paper may probably be adopted for revision of the horizontal seismic calculation of a water tower in Building Seismic Design Codes(GBJ 11-89).The necessity of additional earthquake action in the horizontal seismic calculation of a water tower has been verified by an example presented in the end of the paper.
The formula of the additional earthquake actions of the water tower with supporters has been developed by the hydromechanics theory, and a part of statistical results relating to response spectra of magnified coefficient has been presented.The ideas proposed in this paper may probably be adopted for revision of the horizontal seismic calculation of a water tower in Building Seismic Design Codes(GBJ 11-89).The necessity of additional earthquake action in the horizontal seismic calculation of a water tower has been verified by an example presented in the end of the paper.
2004, 34(8): 81-83.
doi: 10.13204/j.gyjz200408026
Abstract:
A group of formulae for calculation of bulk material wall pressure in squat silos with large diametery are presented, and some guide and explanation are made.The formulae have been adopted by the up-to-date Chinese design code forCode for Design of Reinforced Concrete Silos(GB 50077-2003).
A group of formulae for calculation of bulk material wall pressure in squat silos with large diametery are presented, and some guide and explanation are made.The formulae have been adopted by the up-to-date Chinese design code forCode for Design of Reinforced Concrete Silos(GB 50077-2003).
2004, 34(8): 84-86,65.
doi: 10.13204/j.gyjz200408027
Abstract:
Reinforced concrete frame structures are widely used for industrial and civil buildings.Today in China, there are still a lot of ones that dont conform to the requiremets of earthquake fortification intensity.Therefore, a comprehensive seismic evaluation is important.Since the earthquake resistant capacity of reinforced concrete frames is influenced by many factors, the evaluation is a complicated and difficult work for engineers.The expert systems described in this paper will complete the evaluation not only efficiently but also comprehensively and more precisely.
Reinforced concrete frame structures are widely used for industrial and civil buildings.Today in China, there are still a lot of ones that dont conform to the requiremets of earthquake fortification intensity.Therefore, a comprehensive seismic evaluation is important.Since the earthquake resistant capacity of reinforced concrete frames is influenced by many factors, the evaluation is a complicated and difficult work for engineers.The expert systems described in this paper will complete the evaluation not only efficiently but also comprehensively and more precisely.
2004, 34(8): 87-89.
doi: 10.13204/j.gyjz200408028
Abstract:
A highway lies in a beach region, under which there are deep silt stratifications.Based on the data about geological surveys of Qingdo Development Zone, a dynamic compaction is used to treat the foundation of sediment and silty soil.The in-situ test,design of parameters and construction of this project are introduced in detail.Through in-situ testings,the feasibility of the method for areas of soft soil is verified.
A highway lies in a beach region, under which there are deep silt stratifications.Based on the data about geological surveys of Qingdo Development Zone, a dynamic compaction is used to treat the foundation of sediment and silty soil.The in-situ test,design of parameters and construction of this project are introduced in detail.Through in-situ testings,the feasibility of the method for areas of soft soil is verified.
2004, 34(8): 90-92.
doi: 10.13204/j.gyjz200408029
Abstract:
It is analyzed and improved that the traditional calculating method for the normal section bearing capacity of RC flexural member; and a new calculating means-the chord method is proposed,which is not only more simplified,but also more beneficial to rationality and optimization of section design.
It is analyzed and improved that the traditional calculating method for the normal section bearing capacity of RC flexural member; and a new calculating means-the chord method is proposed,which is not only more simplified,but also more beneficial to rationality and optimization of section design.
2004, 34(8): 93-95.
doi: 10.13204/j.gyjz200408030
Abstract:
According to the Unified Theory, the concrete-filled steel tube( CFST) columns with different sections subjected to axial compression are analyzed by FEM, whose mean stress-strain curves are also obtained. The results of analysis shows that the changes in behaviors for various forms of CFST members are continuous. And the composite strength standard and design values for various forms are given.
According to the Unified Theory, the concrete-filled steel tube( CFST) columns with different sections subjected to axial compression are analyzed by FEM, whose mean stress-strain curves are also obtained. The results of analysis shows that the changes in behaviors for various forms of CFST members are continuous. And the composite strength standard and design values for various forms are given.
