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2006 Vol. 36, No. 6
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2006, 36(6): 1-2.
doi: 10.13204/j.gyjz200606001
Abstract:
It is introduced that the structure and features of H-section steel truss with contactless plates used for modern automobile projects in Beijing.The applications show that about 20% steel can be saved by this structural form as compared to that with contact plates.Further more steel can be saved by horizontal H-sections than by vertical ones;besides the larger the space between the roof trusses,the much the steel will be saved.
It is introduced that the structure and features of H-section steel truss with contactless plates used for modern automobile projects in Beijing.The applications show that about 20% steel can be saved by this structural form as compared to that with contact plates.Further more steel can be saved by horizontal H-sections than by vertical ones;besides the larger the space between the roof trusses,the much the steel will be saved.
2006, 36(6): 3-5.
doi: 10.13204/j.gyjz200606002
Abstract:
The mill building for old assembling workshop for modern automobiles in Beijing is the one by reforming an old factory building established in 1980s.In order to save land and investment the principle of new technique and old mill building was combined,i.e.the construction was done while the production was going on. This old workshop was the building of triple-span(18+18+24)m.It was required by the new technique that the roof truss should be lifted by 5.5m within 24m span(60m24m) of three spans.The design of strengthening and lifting the mill building was done,thus integrating new space with the old one,which could meet the service requirements.
The mill building for old assembling workshop for modern automobiles in Beijing is the one by reforming an old factory building established in 1980s.In order to save land and investment the principle of new technique and old mill building was combined,i.e.the construction was done while the production was going on. This old workshop was the building of triple-span(18+18+24)m.It was required by the new technique that the roof truss should be lifted by 5.5m within 24m span(60m24m) of three spans.The design of strengthening and lifting the mill building was done,thus integrating new space with the old one,which could meet the service requirements.
2006, 36(6): 6-7.
doi: 10.13204/j.gyjz200606003
Abstract:
It was introduced the structural design,scheme comparison of light truck press room of Beijing Modern Automobile Factory.The design shows that there are many advantages in structural property if RC columns and solid-web I-beam are used for large mill building with higher tonnage cranes,and ultralight profiled steel sheets are also used as its enclosure.Hence such mill building can be served safely.
It was introduced the structural design,scheme comparison of light truck press room of Beijing Modern Automobile Factory.The design shows that there are many advantages in structural property if RC columns and solid-web I-beam are used for large mill building with higher tonnage cranes,and ultralight profiled steel sheets are also used as its enclosure.Hence such mill building can be served safely.
2006, 36(6): 8-9.
doi: 10.13204/j.gyjz200606004
Abstract:
The portal frames were used for a workshop of refining lithium and potassium in Salt Lake Prefecture of Qinghai Province,whose height was 24m,which was not conformed with Technical Regulations for Steel Structure of Light Buildings with Portal Frames(CECS 102:2002).Thus,in the design specific measures were taken for treating design parameters,beam-column section of portal frame,brace layout and joint,which could guarantee the feasibility of the structural design.
The portal frames were used for a workshop of refining lithium and potassium in Salt Lake Prefecture of Qinghai Province,whose height was 24m,which was not conformed with Technical Regulations for Steel Structure of Light Buildings with Portal Frames(CECS 102:2002).Thus,in the design specific measures were taken for treating design parameters,beam-column section of portal frame,brace layout and joint,which could guarantee the feasibility of the structural design.
2006, 36(6): 10-11,119.
doi: 10.13204/j.gyjz200606005
Abstract:
The bent frame system and portal frame system are often used for industrial mill buildings.Therefore,the light steel portal frame system is compared comprehensively to the bent frame system of solid-web steel column and solid-web steel plate beam,the bent frame system of solid-web steel column and open-web steel pipe truss,as well as the system of RC column and open-web steel pipe truss.
The bent frame system and portal frame system are often used for industrial mill buildings.Therefore,the light steel portal frame system is compared comprehensively to the bent frame system of solid-web steel column and solid-web steel plate beam,the bent frame system of solid-web steel column and open-web steel pipe truss,as well as the system of RC column and open-web steel pipe truss.
2006, 36(6): 12-16.
doi: 10.13204/j.gyjz200606006
Abstract:
In order to understand the economy and practicality of a column grid,taking a common single-story mill building for example,it was analyzed and compared that the column grids,engineering quantity,steel consumption and cost in medium and small single-story industrial mill buildings with single span(18m),two spans(18m) and three spans(18m).By which several more economic and suitable column grids were also proposed.
In order to understand the economy and practicality of a column grid,taking a common single-story mill building for example,it was analyzed and compared that the column grids,engineering quantity,steel consumption and cost in medium and small single-story industrial mill buildings with single span(18m),two spans(18m) and three spans(18m).By which several more economic and suitable column grids were also proposed.
2006, 36(6): 17-20.
doi: 10.13204/j.gyjz200606007
Abstract:
It was introduced that the basic forms of the roof trusses for modern industrial mill buildings.It was also explained in detail that the calculation of internal forces of roof truss,determination of truss span-depth,and layout of web members etc,which provided experience for structural designers.
It was introduced that the basic forms of the roof trusses for modern industrial mill buildings.It was also explained in detail that the calculation of internal forces of roof truss,determination of truss span-depth,and layout of web members etc,which provided experience for structural designers.
2006, 36(6): 21-23,42.
doi: 10.13204/j.gyjz200606008
Abstract:
It was described that the steel crane beam system with crane's lift capacity being no more than 20t,and whose beam span being no larger than 12m.It was also conducted that numerical descriptions of the lectotype for the crane beam.
It was described that the steel crane beam system with crane's lift capacity being no more than 20t,and whose beam span being no larger than 12m.It was also conducted that numerical descriptions of the lectotype for the crane beam.
2006, 36(6): 24-27,34.
doi: 10.13204/j.gyjz200606009
Abstract:
The key is to save resources for a conservation-minded society,and the idea of making the best use of eveything manifests high-efficient and sustainable use of resources.The infrastructure construction in urban residential area,including the recycle of energy and wastes,plays a key role in saving resources and sustainable development.Bo01-area of Malm City in Sweden has been regarded as the model of ecological and sustainable residential area since it has realized the dream of making the best use of everything and saving resources,through achieving 100 per cent renewable energy and advanced system of waste recycling under the concept of systematic planning.Whose successful experience can inspire us while constructing our residential area.
The key is to save resources for a conservation-minded society,and the idea of making the best use of eveything manifests high-efficient and sustainable use of resources.The infrastructure construction in urban residential area,including the recycle of energy and wastes,plays a key role in saving resources and sustainable development.Bo01-area of Malm City in Sweden has been regarded as the model of ecological and sustainable residential area since it has realized the dream of making the best use of everything and saving resources,through achieving 100 per cent renewable energy and advanced system of waste recycling under the concept of systematic planning.Whose successful experience can inspire us while constructing our residential area.
2006, 36(6): 28-30.
doi: 10.13204/j.gyjz200606010
Abstract:
The copper coin bureau established in 1905, is the pioneer modern machine shop in Chongqing. Originally it only produced copper coin and silver coin, then it was used to produce bullets by some warlords. Whose mill buildings are the largest industrial construction colony, which are still used at the present. They have been preserved most integrally, and are similar to some typical workshops in westernization Movement period. They are very important to modern architecture history in Chongqing. Some utilizing and preserving imaginations are proposed.
The copper coin bureau established in 1905, is the pioneer modern machine shop in Chongqing. Originally it only produced copper coin and silver coin, then it was used to produce bullets by some warlords. Whose mill buildings are the largest industrial construction colony, which are still used at the present. They have been preserved most integrally, and are similar to some typical workshops in westernization Movement period. They are very important to modern architecture history in Chongqing. Some utilizing and preserving imaginations are proposed.
2006, 36(6): 31-34.
doi: 10.13204/j.gyjz200606011
Abstract:
Five atria to Department Store of Xinjiekou and Orient Plaza in Nanjing, the First Affiliated Hospital of Jiangxi Medical University and Women and Children. s Hospital of Jiangxi Province in Nanchang were investigated, some results were achieved and some factors that influence thermal environment were analyzed.
Five atria to Department Store of Xinjiekou and Orient Plaza in Nanjing, the First Affiliated Hospital of Jiangxi Medical University and Women and Children. s Hospital of Jiangxi Province in Nanchang were investigated, some results were achieved and some factors that influence thermal environment were analyzed.
2006, 36(6): 35-37,95.
doi: 10.13204/j.gyjz200606012
Abstract:
The development status of housing maintenance is analyzed. The evaluation index system of housing degree of ageing is established by AHP and its value is calculated by FCJ according to project examples. The types of housin gmaintenance are classified according to the value of degree of ageing.
The development status of housing maintenance is analyzed. The evaluation index system of housing degree of ageing is established by AHP and its value is calculated by FCJ according to project examples. The types of housin gmaintenance are classified according to the value of degree of ageing.
2006, 36(6): 38-42.
doi: 10.13204/j.gyjz200606013
Abstract:
A robust computer procedure for weight minimization of high-rise portal frames and shear walls under the deflection constraint at various locations is presented. It replaces the conventional tedious and unreliable manual assessment for numerous members. Several practical considerations such as the discreteness of design variables are included in the optimization procedure. The method is readily used in practical optimization design of steel and reinforced concrete structures against the deflection limit.
A robust computer procedure for weight minimization of high-rise portal frames and shear walls under the deflection constraint at various locations is presented. It replaces the conventional tedious and unreliable manual assessment for numerous members. Several practical considerations such as the discreteness of design variables are included in the optimization procedure. The method is readily used in practical optimization design of steel and reinforced concrete structures against the deflection limit.
2006, 36(6): 43-46,64.
doi: 10.13204/j.gyjz200606014
Abstract:
The non-simultaneous stiffness equations, whose fundamental unknown variations are floorcs displacements uk、vkOk are obtained from three conditions of static force equilibriums, displacement compatibility and mechanic relation ofmaterial.The means is conveniently for the analysis of structural layout in the preliminary design phase. Some internal force distribution features of tall building structure are concluded on the basis of a great quantity of typical calculated examples.
The non-simultaneous stiffness equations, whose fundamental unknown variations are floorcs displacements uk、vkOk are obtained from three conditions of static force equilibriums, displacement compatibility and mechanic relation ofmaterial.The means is conveniently for the analysis of structural layout in the preliminary design phase. Some internal force distribution features of tall building structure are concluded on the basis of a great quantity of typical calculated examples.
2006, 36(6): 47-49.
doi: 10.13204/j.gyjz200606015
Abstract:
Based on the viscoelastic theory, it was proposed the plane finite element model of concrete frame structures, in which a linear three-parameter viscoelastic model was adopted. The program of finite element was developed and used in analyzing the response of concrete frame structures and the creep law of concrete. The numerical results could be used to forecast the time when the creep reaches stability.
Based on the viscoelastic theory, it was proposed the plane finite element model of concrete frame structures, in which a linear three-parameter viscoelastic model was adopted. The program of finite element was developed and used in analyzing the response of concrete frame structures and the creep law of concrete. The numerical results could be used to forecast the time when the creep reaches stability.
2006, 36(6): 50-53,76.
doi: 10.13204/j.gyjz200606016
Abstract:
large-area concrete structure is a kind of structure with an attractive outlook in large-scale public buildings. It mainly means the length or width of the monolithically cast concrete structure is longer or wider than the maximum of the structure in the code. The influence of temperature change, shrinkage and creep on structure is the key to solve the problem. Through a practical engineering, shrinkage and creep formulas being in accord with test results are brought forward. Finite element model which adopts plat element to simulate beam is close to practice and can be directed to project.
large-area concrete structure is a kind of structure with an attractive outlook in large-scale public buildings. It mainly means the length or width of the monolithically cast concrete structure is longer or wider than the maximum of the structure in the code. The influence of temperature change, shrinkage and creep on structure is the key to solve the problem. Through a practical engineering, shrinkage and creep formulas being in accord with test results are brought forward. Finite element model which adopts plat element to simulate beam is close to practice and can be directed to project.
2006, 36(6): 54-58.
doi: 10.13204/j.gyjz200606017
Abstract:
Using the numerical simulating technique, the limit loads with various parameters for strip footings near excavations are obtained. As accepted in other proposals, the estimate of the bearing capacity near an excavation is calculated here respectively from the terms dependent on the cohesion, the footing depth ( overburden) and the soil weight based on Terzaghi. s assumption of superposition. According to the stress and displacement filed simulated within the range of xcavation depths, it is found that potential critical sliding surfaces are allowed above-the-toe failures. And further, the characteristics of bearing capacity adjacent to excavations are discussed using the results that obtained in terms of the bearing capacity coefficients from numerical modeling.
Using the numerical simulating technique, the limit loads with various parameters for strip footings near excavations are obtained. As accepted in other proposals, the estimate of the bearing capacity near an excavation is calculated here respectively from the terms dependent on the cohesion, the footing depth ( overburden) and the soil weight based on Terzaghi. s assumption of superposition. According to the stress and displacement filed simulated within the range of xcavation depths, it is found that potential critical sliding surfaces are allowed above-the-toe failures. And further, the characteristics of bearing capacity adjacent to excavations are discussed using the results that obtained in terms of the bearing capacity coefficients from numerical modeling.
2006, 36(6): 59-64.
doi: 10.13204/j.gyjz200606018
Abstract:
The strength reduction method is used for the analysis of two-dimensional and three-dimension slope stabilities,whose results are compared with the result of limit equilibrium method, the result shows the strength reduction method is feasible. The factors influencing slope stability are studied, and it is analyzed the safety factor of a three-dimensional slope with same surface load, yet a different active area. It is also pointed out that slope stability has three-dimensional effect,which has some guidance for analyzing the stability of a slope
The strength reduction method is used for the analysis of two-dimensional and three-dimension slope stabilities,whose results are compared with the result of limit equilibrium method, the result shows the strength reduction method is feasible. The factors influencing slope stability are studied, and it is analyzed the safety factor of a three-dimensional slope with same surface load, yet a different active area. It is also pointed out that slope stability has three-dimensional effect,which has some guidance for analyzing the stability of a slope
2006, 36(6): 65-69,5.
doi: 10.13204/j.gyjz200606019
Abstract:
Based on the field experiments, it is studied the behaviors of the three types of connection between cap(foundation) and pile top, i. e. the first type is pile top being in contact with cap, the second is the pile top being separated from foundation by a layer of sand or gravel cushion, and the third is the one with variable stiffness cushion between foundation and pile top, which are compared with numerical method.The working mechanism of the third type foundation is especially studied by changing the stiffness of the cushion in the numerical analysis.
Based on the field experiments, it is studied the behaviors of the three types of connection between cap(foundation) and pile top, i. e. the first type is pile top being in contact with cap, the second is the pile top being separated from foundation by a layer of sand or gravel cushion, and the third is the one with variable stiffness cushion between foundation and pile top, which are compared with numerical method.The working mechanism of the third type foundation is especially studied by changing the stiffness of the cushion in the numerical analysis.
2006, 36(6): 70-76.
doi: 10.13204/j.gyjz200606020
Abstract:
Based on the strong learning ability and fuzzy logic function of ANFIS, a method for predicting vertical ultimate bearing capacity of single pile is presented. In this model data on static tests are trained and predicted. It is showed that the method is feasible and effective. Based on provided method, a reliability analysis of bearing capacity of single pile is made by utilizing the limit state equation of dimensionless random variables. The index of reliability of the single pile is calculated with the optimization method. Finally, a reliability design method of single pile is presented.
Based on the strong learning ability and fuzzy logic function of ANFIS, a method for predicting vertical ultimate bearing capacity of single pile is presented. In this model data on static tests are trained and predicted. It is showed that the method is feasible and effective. Based on provided method, a reliability analysis of bearing capacity of single pile is made by utilizing the limit state equation of dimensionless random variables. The index of reliability of the single pile is calculated with the optimization method. Finally, a reliability design method of single pile is presented.
2006, 36(6): 77-80,87.
doi: 10.13204/j.gyjz200606021
Abstract:
The splitting tensile method for the tensile strength of concrete is usually used in structural applications, so it is great important in the investingating the relation between the direct tensile strength and the splitting strength. But there lationship between the splitting strength and the direct tensile strength is not consensus confirmed at home and abroad. In order to obtain the exact results, the experimental apparatus for concrete of the direct tension are designed, which resolves the difficulty of ensuring that the load is truly axial. Tests of the direct tension are performanced on three different concrete mixes( C20, C40, C60) at 3, 7, 14, 28 and 60 days, and the test data do not scatter. The relations between the tensile strength and the cube compressive strength are obtained, and a formula for investigating the relation between the direct tensile strength and the splitting strength are proposed
The splitting tensile method for the tensile strength of concrete is usually used in structural applications, so it is great important in the investingating the relation between the direct tensile strength and the splitting strength. But there lationship between the splitting strength and the direct tensile strength is not consensus confirmed at home and abroad. In order to obtain the exact results, the experimental apparatus for concrete of the direct tension are designed, which resolves the difficulty of ensuring that the load is truly axial. Tests of the direct tension are performanced on three different concrete mixes( C20, C40, C60) at 3, 7, 14, 28 and 60 days, and the test data do not scatter. The relations between the tensile strength and the cube compressive strength are obtained, and a formula for investigating the relation between the direct tensile strength and the splitting strength are proposed
2006, 36(6): 81-82.
doi: 10.13204/j.gyjz200606022
Abstract:
Location and covering thickness of steel bars in concrete are important factors relating to the quality of concrete structures. Through research and engineering application of electromagnetic method, a set of integrated testing technology is brought forward.
Location and covering thickness of steel bars in concrete are important factors relating to the quality of concrete structures. Through research and engineering application of electromagnetic method, a set of integrated testing technology is brought forward.
2006, 36(6): 83-87.
doi: 10.13204/j.gyjz200606023
Abstract:
Stress distribution at cross section of transverse uniformly distributed load and non-uniformly distributed load applied to concrete cylinder by finite element method is analyzed. The results show that the area of cross-sectional tensile stress exceeds 90 percent, and the value of tensile stress is relatively uniform when transverse distributed load and negate mean distributed load are applied to cylinder.The test shows that nominal transverse splitting strength of concrete cylinder is well correlated to the concrete cube strength and splitting strength of cube and cylinder, especially, above interrelation is more ideal when hold-down central angle is 90b. So both theoretical analysis and test show that concrete strength can be obtained by transverse cutting method.
Stress distribution at cross section of transverse uniformly distributed load and non-uniformly distributed load applied to concrete cylinder by finite element method is analyzed. The results show that the area of cross-sectional tensile stress exceeds 90 percent, and the value of tensile stress is relatively uniform when transverse distributed load and negate mean distributed load are applied to cylinder.The test shows that nominal transverse splitting strength of concrete cylinder is well correlated to the concrete cube strength and splitting strength of cube and cylinder, especially, above interrelation is more ideal when hold-down central angle is 90b. So both theoretical analysis and test show that concrete strength can be obtained by transverse cutting method.
2006, 36(6): 88-91,113.
doi: 10.13204/j.gyjz200606024
Abstract:
Three high-strength lightweight aggregate concrete (LWAC) beams were experimented for long-term deflections,which lasted for nearly 1 year, with the average 28-day compressive strength 601 8MPa and 6414MPa. From the test results it is observed that long-term deflections developed quickly at early ages and reinforcement ratio for compression steel had a significant effect on time-dependent deflections. Finite element methods had been developed to account for time-dependent deflections of reinforced concrete members and a good agreement was achieved. It isfound that ACI318 and ACI435methodshad resulted in good estimates for the time-dependent deformation and the design methods of current Chinese codes may be unsafe.
Three high-strength lightweight aggregate concrete (LWAC) beams were experimented for long-term deflections,which lasted for nearly 1 year, with the average 28-day compressive strength 601 8MPa and 6414MPa. From the test results it is observed that long-term deflections developed quickly at early ages and reinforcement ratio for compression steel had a significant effect on time-dependent deflections. Finite element methods had been developed to account for time-dependent deflections of reinforced concrete members and a good agreement was achieved. It isfound that ACI318 and ACI435methodshad resulted in good estimates for the time-dependent deformation and the design methods of current Chinese codes may be unsafe.
2006, 36(6): 92-95.
doi: 10.13204/j.gyjz200606025
Abstract:
Based on practical engineering background, the string-bow pre-stressed latticed shell structure is proposed and applied to large-span indoor coal storage yard design for the first time. The static behaviors of the structure are analyzed in detail, and the seismic performances are calculated by the modal response spectrum method. The principle of pre-stress application, which ensures the supports unmoved under dead load, is also proposed. This principle not only makes the structure basically self balanced, but also simplifies the construction. The analysis results show that the pre-stressed cables enhance the rigidity of the shell, reduce the internal force and make the shell much lighter, only 3313kg/m2. Most internal forces of the struts are controlled by wind and temperature effect and the structure is more subject to the horizontal seismic effect than the vertical seismic effect. The maximum seismic force ratio of the shell reaches 0122.
Based on practical engineering background, the string-bow pre-stressed latticed shell structure is proposed and applied to large-span indoor coal storage yard design for the first time. The static behaviors of the structure are analyzed in detail, and the seismic performances are calculated by the modal response spectrum method. The principle of pre-stress application, which ensures the supports unmoved under dead load, is also proposed. This principle not only makes the structure basically self balanced, but also simplifies the construction. The analysis results show that the pre-stressed cables enhance the rigidity of the shell, reduce the internal force and make the shell much lighter, only 3313kg/m2. Most internal forces of the struts are controlled by wind and temperature effect and the structure is more subject to the horizontal seismic effect than the vertical seismic effect. The maximum seismic force ratio of the shell reaches 0122.
2006, 36(6): 96-98,103.
doi: 10.13204/j.gyjz200606026
Abstract:
Based on the experiment of eight pieces of brick masonry walls with pilaster strengthened by GFRP and one piece of normal masonry wall with pilaster, truss bar model of FRP and using for reference of code for seismic design of building( GB5001- 2001), it is proposed the simplified seismic design formula of shear capacity of brick masonry wall with pilaster reinforced by GFRP, which has a safety factor 2123, which fulfills the requiremetns of actual projects and can be used for further study or for project design.
Based on the experiment of eight pieces of brick masonry walls with pilaster strengthened by GFRP and one piece of normal masonry wall with pilaster, truss bar model of FRP and using for reference of code for seismic design of building( GB5001- 2001), it is proposed the simplified seismic design formula of shear capacity of brick masonry wall with pilaster reinforced by GFRP, which has a safety factor 2123, which fulfills the requiremetns of actual projects and can be used for further study or for project design.
2006, 36(6): 99-103.
doi: 10.13204/j.gyjz200606027
Abstract:
The fatigue life of cracked steel plate can be significantly increased by external bonded CFRP plates. The influence parameters, such as the length, width, thickness, elastic modulus of CFRP, and the thickness, shear modulus of adhesive, on stress intensity factor( SIF) of fatigue crack front face were studied with finite element method( FEM). The results showed that increasing the thickness and elastic modulus of CFRP, using moderate thickness and shear modulus of adhesive led to good strengthening effect. Based on the FEM results, an empirical formula of SIF was suggested. The fatigue crack propagation predicted by the suggested empirical formula is found to have good agreement with experimental result,and can be usd to evaluate the fatigue life of cracked steel plate strengthened with CFRP plates.
The fatigue life of cracked steel plate can be significantly increased by external bonded CFRP plates. The influence parameters, such as the length, width, thickness, elastic modulus of CFRP, and the thickness, shear modulus of adhesive, on stress intensity factor( SIF) of fatigue crack front face were studied with finite element method( FEM). The results showed that increasing the thickness and elastic modulus of CFRP, using moderate thickness and shear modulus of adhesive led to good strengthening effect. Based on the FEM results, an empirical formula of SIF was suggested. The fatigue crack propagation predicted by the suggested empirical formula is found to have good agreement with experimental result,and can be usd to evaluate the fatigue life of cracked steel plate strengthened with CFRP plates.
2006, 36(6): 104-106,116.
doi: 10.13204/j.gyjz200606028
Abstract:
Protection of cultural heritage structures such as the ancient pagoda from severe earthquake by conventional strengthening methods is not always reliable. In recent years carbon fiber reinforced polymer( CFRP) has been widely applied to the field of rehabilitation and retrofit of existing structures, so earthquake protection of cultural heritage structures through FRP is practicable and feasible. The seismic properties of the old tower and that with FRP are analyzed. The calculated results illustrate that the strengthening method with FRP is very effective to improve the structurecs earthquake resistance and has great potential specifically for use in ancient masonry structures.
Protection of cultural heritage structures such as the ancient pagoda from severe earthquake by conventional strengthening methods is not always reliable. In recent years carbon fiber reinforced polymer( CFRP) has been widely applied to the field of rehabilitation and retrofit of existing structures, so earthquake protection of cultural heritage structures through FRP is practicable and feasible. The seismic properties of the old tower and that with FRP are analyzed. The calculated results illustrate that the strengthening method with FRP is very effective to improve the structurecs earthquake resistance and has great potential specifically for use in ancient masonry structures.
2006, 36(6): 107-109.
doi: 10.13204/j.gyjz200606029
Abstract:
It has been described the remarkable characteristics of the cast in-place concrete wall with wire net, the factor of production, key technology and the performance of the wall. By the comparison of the wall body and project instance with other non-solid clay bricks, it has been proved that the performance of the wall is superior, and is worth popularizing in a more effective manner
It has been described the remarkable characteristics of the cast in-place concrete wall with wire net, the factor of production, key technology and the performance of the wall. By the comparison of the wall body and project instance with other non-solid clay bricks, it has been proved that the performance of the wall is superior, and is worth popularizing in a more effective manner
2006, 36(6): 110-113.
doi: 10.13204/j.gyjz200606030
Abstract:
The slab comprehensive dwelling building in Datunli District of Beijing is a multifun ctional apartment house including many functions such as housing, leisure, body building, shopping and working. Its style goes after the Europe classical and its plane layout is extremely flexible. The width and depth of most rooms are vast.The stuctural features of the building is that various unfavorable factors are concentrated. The countermeasures for these unfavorable factors are given and the proposed method for some difficult problems are suggested. Thes countermeasures and method can be referenced for resemble engineering design.
The slab comprehensive dwelling building in Datunli District of Beijing is a multifun ctional apartment house including many functions such as housing, leisure, body building, shopping and working. Its style goes after the Europe classical and its plane layout is extremely flexible. The width and depth of most rooms are vast.The stuctural features of the building is that various unfavorable factors are concentrated. The countermeasures for these unfavorable factors are given and the proposed method for some difficult problems are suggested. Thes countermeasures and method can be referenced for resemble engineering design.
2006, 36(6): 114-116.
doi: 10.13204/j.gyjz200606031
Abstract:
It was explored that the construction of ecological cities, creation of urban features, design of urban landscapes,as well as protection of historic remains etc, based on proposing the problems in urban construction at present and their reasons. Which would raise people. s recognition of the importance of urban sustainable development and promote heal thy development of urban construction.
It was explored that the construction of ecological cities, creation of urban features, design of urban landscapes,as well as protection of historic remains etc, based on proposing the problems in urban construction at present and their reasons. Which would raise people. s recognition of the importance of urban sustainable development and promote heal thy development of urban construction.
2006, 36(6): 117-119.
doi: 10.13204/j.gyjz200606032
Abstract:
There are many protection and utilization values in modern historic and cultural architectures, cultural blocks, as well as historic ruins in China. The damaging actions of demolishing old buildings and constructing new ones in a large-scale shall be criticized.
There are many protection and utilization values in modern historic and cultural architectures, cultural blocks, as well as historic ruins in China. The damaging actions of demolishing old buildings and constructing new ones in a large-scale shall be criticized.
