钢筋混凝土剪力墙塑性铰区受剪承载力分析
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摘要
在已有试验研究的基础上,采用桁架-拱模型对钢筋混凝土剪力墙塑性铰区的受剪机理进行了研究。引入了考虑轴压比的混凝土强度有效系数;分析了剪力墙截面极限转角、水平分布钢筋、桁架与拱模型倾角等因素对剪力墙受剪承载力的影响;并在此基础上建立了剪力墙塑性铰区受剪承载力计算公式。理论研究与试验分析表明:基于桁架-拱模型的剪力墙受剪承载力公式具有一定的理论依据和实用价值,满足实际工程计算需要。
Based on the previous experimental research,the shear mechanism of yield hinge regions of the reinforced concrete shear wall is studied by a truss-arch model. It is brought in the effective coefficient of concrete strength with considering the axial load ratio and analyzed the influence of some factors on the shear capacity of the shear wall,such as the ultimate rotation of the cross-section of shear wall,the horizontal distribution reinforcement,the truss,the inclination angle of the arch model and others. On this basis,the shear capacity calculation formula of the yield hinge regions of the shear wall is put forward. Theoretical research and test analysis show that the shear capacity calculation formula of the shear wall which based on the truss-arch model are both valuable for theoretical analysis and practical application,and can meet practical engineering.
Based on the previous experimental research,the shear mechanism of yield hinge regions of the reinforced concrete shear wall is studied by a truss-arch model. It is brought in the effective coefficient of concrete strength with considering the axial load ratio and analyzed the influence of some factors on the shear capacity of the shear wall,such as the ultimate rotation of the cross-section of shear wall,the horizontal distribution reinforcement,the truss,the inclination angle of the arch model and others. On this basis,the shear capacity calculation formula of the yield hinge regions of the shear wall is put forward. Theoretical research and test analysis show that the shear capacity calculation formula of the shear wall which based on the truss-arch model are both valuable for theoretical analysis and practical application,and can meet practical engineering.
引文
1白生翔.混凝土结构规范中受剪承载力计算方法综述.北京:中国建筑科学研究院建筑结构研究所,1999:7-13
2康谷贻.1990CEB-FIP模式规范(混凝土结构)有关内容介绍(四).建筑结构,1995(12):51-56;1996(2):53-57
3Ichinose T.A Shear Design Equation for Ductility R/C Members.Earthquake Engineering and Structural Dynamics,1992,21(2):197-213
4Design Guidelinesfor Earthquake Resistant Reinforced Concrete Buildings Based on Ultimate Strength Concept.Architectural Institute of Japan,Tokyo:1990
5复合受力课题组.混凝土构件受弯、剪、扭及复合受力状态的模型分析与试验研究.2000:7-9
6王铁成,康谷贻.日本抗震指南钢筋混凝土构件抗剪强度的计算模型.建筑结构,2000,30(10):31-33
7管品武,王建强,刘立新.反复荷载下混凝土框架柱塑性铰区基于延性的抗剪承载力机理分析.世界地震工程,2005,21(3):75-81
2康谷贻.1990CEB-FIP模式规范(混凝土结构)有关内容介绍(四).建筑结构,1995(12):51-56;1996(2):53-57
3Ichinose T.A Shear Design Equation for Ductility R/C Members.Earthquake Engineering and Structural Dynamics,1992,21(2):197-213
4Design Guidelinesfor Earthquake Resistant Reinforced Concrete Buildings Based on Ultimate Strength Concept.Architectural Institute of Japan,Tokyo:1990
5复合受力课题组.混凝土构件受弯、剪、扭及复合受力状态的模型分析与试验研究.2000:7-9
6王铁成,康谷贻.日本抗震指南钢筋混凝土构件抗剪强度的计算模型.建筑结构,2000,30(10):31-33
7管品武,王建强,刘立新.反复荷载下混凝土框架柱塑性铰区基于延性的抗剪承载力机理分析.世界地震工程,2005,21(3):75-81
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