基于抗剪抵抗机构的无开洞RC剪力墙的极限承载力分析模型的探讨
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摘要
以探讨基于抗剪抵抗机构和破坏模式的带边框柱或暗柱的普通配筋形式的钢筋混凝土(RC)剪力墙极限承载力的分析模型为目的,鉴于RC剪力墙受力特性、破坏过程及破坏模式,以混凝土斜压杆为主的抗剪抵抗机构可简化成:倾角为θ的混凝土斜压杆、纵向及横向分布钢筋三部分组成。基于抗剪抵抗机构、力的平衡条件以及RC剪力墙的极限承载力的计算公式,编制了计算程序,对14片不同配筋、不同几何尺寸和受力状态的RC剪力墙进行了极限承载力分析,理论计算结果和试验结果吻合较好,可以得出该分析模型能够较好的反映无开洞RC剪力墙的极限承载力特性,可应用于不同受力状态下RC剪力墙的极限承载力验算。
The purpose of this paper is to investigate an analysis model to evaluate the ultimate strength of RC shear wall with edge-frame columns or concealed columns based on the shear resistant mechanism and failure modes. According to its mechanical behavior, failure process and modes, shear resistant mechanism of RC shear wall can be simplified as a composition of concrete inclined strut with an inclination of θ,horizontal and longitudinal bars. The calculating equations for ultimate strength are provided from shear resistant mechanism, and a program is developed to evaluate the strengths of RC shear walls. Simultaneously, the ultimate strengths of 14 RC shear walls are analyzed with this program. The analysis results agree well with those of test. It can be concluded that the analysis model verified in this paper can evaluate the ultimate strengths of RC shear walls, and the model can be used to check the ultimate strength of RC shear wall subjected to different loads.
The purpose of this paper is to investigate an analysis model to evaluate the ultimate strength of RC shear wall with edge-frame columns or concealed columns based on the shear resistant mechanism and failure modes. According to its mechanical behavior, failure process and modes, shear resistant mechanism of RC shear wall can be simplified as a composition of concrete inclined strut with an inclination of θ,horizontal and longitudinal bars. The calculating equations for ultimate strength are provided from shear resistant mechanism, and a program is developed to evaluate the strengths of RC shear walls. Simultaneously, the ultimate strengths of 14 RC shear walls are analyzed with this program. The analysis results agree well with those of test. It can be concluded that the analysis model verified in this paper can evaluate the ultimate strengths of RC shear walls, and the model can be used to check the ultimate strength of RC shear wall subjected to different loads.
引文
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[10]张展,周克容.变高宽比高性能混凝土剪力墙抗震性的试验研究[J].结构工程师,2004,(2):62～68.Zhang Zhan,Zhou Kerong.Experimental study on seismic behavior of high-performance concrete shear walls with various aspect ratios[J].Structural Engineers,2004,(2):62～68.(in Chinese)
[11]望月洵,小野里憲一.連層耐震壁の破壊モードの判別式[C].コンクリート工学年次論文集.日本:コンクリート工学協会,1991.Makoto Mochizuki,Norikazu Onozato.Estimation of failure modes of shear wall[C].Japan:Japan Concrete Institute,1991.(in Japanese)
[2]JGJ3-2002高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2002.JGJ3-2002Technical specification for concrete structures of tall building[S].Beijing:China Architecture Industry Press,2002.(in Chinese)
[3]蒋欢军,吕西林.用一种墙体单元分析剪力墙结构[J].地震工程与工程振动,1998,18(3):40～48.Jiang Huanjun,Lu Xilin.Analysis of shear wall structures using a type of wall element[J].Earthquake Engineering and Engineering Vibration,1998,18(3):40～48.(in Chinese)
[4]Zhang Dachang.Finite element analysis on shear performance of reinforced concrete structure subjected to the seismic loads[D].Japan:Chiba University,2003.
[5]Hwang S J,Fang W H,Lee H J,Yu H W.Analytical model for predicting shear strength of squat walls[J].J.of Structure Engineering,2001,127:43～50.
[6]陈亦,何军毅,蒋欢军.剪力墙结构计算模型分析[J].四川建筑科学研究,2001,27(1):1～4.Chen Yi,He Junyi,Jiang Huanjun.Analysis of calculation models for shear wall structures[J].Building Science Research of Sichuan,2001,27(1):1～4.(in Chinese)
[7]Makoto Mochizuki,Norikazu Onozato,Masao Takehara,Yukichi Hanehira.Analytical accuracy of maximum strengths of reinforced concrete framed shear walls by macroscopic models[J].Concrete Research and Technology,JCI,2003,14(2):11～21.
[8]Aoyama H,Kato O,Katsumata E.Experimental study of resistance and deformation of RC shear wall[C].Summaries of Technical Papers of Annual Meeting AIJ.Japan:Architectural Institute of Japan,1982.
[9]小野里憲一,望月洵,竹中克己,谷本和彦.耐震壁の強度と破壊モードの制御[C].コンクリート工学論文報告集.日本:コンクリート工学協会,1992.Norikazu Onozato,Makoto Mochizuki,Takenaka Katsumi,Yamoto Kazuhiko.Control of strength and failure modes of RC shear wall[C].Japan:Japan Concrete Institute,1992.(in Japanese)
[10]张展,周克容.变高宽比高性能混凝土剪力墙抗震性的试验研究[J].结构工程师,2004,(2):62～68.Zhang Zhan,Zhou Kerong.Experimental study on seismic behavior of high-performance concrete shear walls with various aspect ratios[J].Structural Engineers,2004,(2):62～68.(in Chinese)
[11]望月洵,小野里憲一.連層耐震壁の破壊モードの判別式[C].コンクリート工学年次論文集.日本:コンクリート工学協会,1991.Makoto Mochizuki,Norikazu Onozato.Estimation of failure modes of shear wall[C].Japan:Japan Concrete Institute,1991.(in Japanese)
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