地震水平往复力作用下多层带框架剪力墙的试验与分离度模型
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摘要
现行抗震设计规范在基础梁的结构设计中考虑了桩底剪力引起的弯矩和轴力,但没有考虑剪力传递在受力过程中的变化。因此,在对包括纵横向基础梁、部分底层楼板以及两根桩的三层带框架单跨剪力墙试件进行拟静力试验基础上,提出剪力传递分离度模型。该模型考虑水平荷载作用于基础梁顶引起的弯矩,以及剪力墙纵筋引起的弯矩,并且弯矩会随着剪力墙在受力过程中的转角变化、剪力墙与基础梁结合部面积的减少而变化。通过对剪力墙、基础梁、楼板和桩之间相互作用的模型分析,模拟并验证带框架剪力墙剪力传递机理的变化。结果表明,分离度模型构筑简便,能够把握住剪力墙剪力传递的关键特性,可为剪力墙的二阶段设计提供理论模型依据。
In the current seismic design code,bending moment and axial force due to shear of piles have been taken into account in the structural design of foundation beam.However,the change of shear transfer mechanism did not been considered.In this paper,based on a pseudo static test of a structural wall which composed of foundation beams,floor slab,two piles and three-storied walls,a shear transfer detachment model was proposed.The model took into account the shear force due to the bending moment on the upside of beam,the bending moment due to the vertical reinforcements of shear wall,the change of moment in the process of loading and the contact area reduction between the foundation beam and the wall.Through the experimental and analytical study,the interaction and the shear transfer of shear wall,foundation beam,floor slab and piles was simulated and verified.The comparison shows that the detachment model is simple,accurate,and able to model the shear transfer mechanism of structural walls.
In the current seismic design code,bending moment and axial force due to shear of piles have been taken into account in the structural design of foundation beam.However,the change of shear transfer mechanism did not been considered.In this paper,based on a pseudo static test of a structural wall which composed of foundation beams,floor slab,two piles and three-storied walls,a shear transfer detachment model was proposed.The model took into account the shear force due to the bending moment on the upside of beam,the bending moment due to the vertical reinforcements of shear wall,the change of moment in the process of loading and the contact area reduction between the foundation beam and the wall.Through the experimental and analytical study,the interaction and the shear transfer of shear wall,foundation beam,floor slab and piles was simulated and verified.The comparison shows that the detachment model is simple,accurate,and able to model the shear transfer mechanism of structural walls.
引文
[1]GB 50011—2010建筑抗震设计规范[S].北京,中国建筑工业出版社,2010(GB 50011—2010 Code for seismicdesign of buildings[S].Beijing:China Architecture&Building Press,2010(in Chinese)
[2]Architecture Institute of Japan.Design guidelines for earthquakeresistant reinforced concrete buildings based on inelasticdisplacement concept[S].Tokyo:Architecture Institute ofJapan,2001
[3]ACI Committee 318.Building code requirements for structuralconcrete and commentary(ACI 318-08/318R-08)[S].US:American Concrete Institute,2008
[4]Paulay T,Priestley M J N.Seismic design of reinforcedconcrete and masonry buildings[M].New York:JohnWiley&Sons,1992
[5]Sakashita M,Bechtoula H,Kono S,et al.A study on theseismic force resisting mechanism of a multi-story shearwall system considering the interaction between wall,slab,foundation beam,and pile elements[C]//13th WorldConference on Earthquake Engineering.Vancouver,2004:3482
[6]Sakashita M,Urabe A,Murakami K,et al.Lateral loadresisting mechanism of a monolithic shear wall or a PCashear wall and peripheral members Part1-2[C]//Summaries Technical Papers of Annual MeetingArchitectural Institute of Japan C-2 Structures 4,2005:403-406(in Japanese)
[7]谢凡,沈蒲生.框架-剪力墙混合结构层模型试验研究[J].湖南大学学报:自然科学版,2010,37(11):12-17(Xie Fan,Shen Pusheng.Experimental study of the storeymodes of frame-shear wall hybrid structure[J].Journal ofHunan University:Natural Sciences,2010,37(11):12-17(in Chinese))
[8]刘杨,沈蒲生.地震作用下转换层上、下结构侧向刚度对框支剪力墙受力性能的影响[J].工程抗震与加固改造,2005,27(3):12-16(Liu Yang,Shen Pusheng.Influence of lateral displacement stiffness on theperformance of shear wall structures supported on framesunder seismic behavior[J].Earthquake ResistantEngineering and Retrofitting,2005,27(3):12-16(inChinese))
[9]Wang J Y,Sakashita M,Kono S.Shear transfer mechanism ofa multi-storied shear wall with peripheral members[C]//Proceedings of International Conference on consumerelectronics,Communications and Networks,CECNet,2011,3:2582-2595
[2]Architecture Institute of Japan.Design guidelines for earthquakeresistant reinforced concrete buildings based on inelasticdisplacement concept[S].Tokyo:Architecture Institute ofJapan,2001
[3]ACI Committee 318.Building code requirements for structuralconcrete and commentary(ACI 318-08/318R-08)[S].US:American Concrete Institute,2008
[4]Paulay T,Priestley M J N.Seismic design of reinforcedconcrete and masonry buildings[M].New York:JohnWiley&Sons,1992
[5]Sakashita M,Bechtoula H,Kono S,et al.A study on theseismic force resisting mechanism of a multi-story shearwall system considering the interaction between wall,slab,foundation beam,and pile elements[C]//13th WorldConference on Earthquake Engineering.Vancouver,2004:3482
[6]Sakashita M,Urabe A,Murakami K,et al.Lateral loadresisting mechanism of a monolithic shear wall or a PCashear wall and peripheral members Part1-2[C]//Summaries Technical Papers of Annual MeetingArchitectural Institute of Japan C-2 Structures 4,2005:403-406(in Japanese)
[7]谢凡,沈蒲生.框架-剪力墙混合结构层模型试验研究[J].湖南大学学报:自然科学版,2010,37(11):12-17(Xie Fan,Shen Pusheng.Experimental study of the storeymodes of frame-shear wall hybrid structure[J].Journal ofHunan University:Natural Sciences,2010,37(11):12-17(in Chinese))
[8]刘杨,沈蒲生.地震作用下转换层上、下结构侧向刚度对框支剪力墙受力性能的影响[J].工程抗震与加固改造,2005,27(3):12-16(Liu Yang,Shen Pusheng.Influence of lateral displacement stiffness on theperformance of shear wall structures supported on framesunder seismic behavior[J].Earthquake ResistantEngineering and Retrofitting,2005,27(3):12-16(inChinese))
[9]Wang J Y,Sakashita M,Kono S.Shear transfer mechanism ofa multi-storied shear wall with peripheral members[C]//Proceedings of International Conference on consumerelectronics,Communications and Networks,CECNet,2011,3:2582-2595
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