砌体填充墙RC框架结构破坏模式分析及数值模拟
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摘要
基于填充墙框架结构伪静力试验,包括纯框架、大跨满布填充墙框架及两跨半高布置填充墙框架试验模型,揭示填充墙对框架结构破坏模式的影响规律,并实现数值模拟。试验结果分析表明,填充墙对RC框架产生了斜压杆效应及约束效应,改变了框架结构的破坏失效模式,易导致明显的"柱铰"破坏机制。另外,采用DIANA非线性有限元分析程序,建立一种填充墙框架结构分离式微观有限元模型,通过对试验模型的非线性有限元分析,验证该模型能有效实现填充墙与RC框架间相互作用规律的模拟,并对不同砌筑材料填充墙对框架结构破坏模式的影响进行分析。
Based on the pseudo-static tests of reinforced concrete frame structures with infill panels, including pure frame model, fully infilled frame model in large span and partially infilled frame model, the influence laws of infill walls on the earthquake damage modes of frame structures were revealed, and the numerical simulations of them were achieved. The test results show that infill walls have diagonal strut and confinement effect on frame structures, so the failure modes of frame structures are changed, which easily leads to column hinge failure mechanism. In addition, based on DIANA nonlinear finite element analysis program, a kind of separate finite element micromodel was set up. Through nonlinear finite element analysis of test models, the effectiveness of this finite element model on simulating the interaction laws between infill walls and RC frames were verified, and the influences of different material masonry infill walls on the failure modes were analyzed.
Based on the pseudo-static tests of reinforced concrete frame structures with infill panels, including pure frame model, fully infilled frame model in large span and partially infilled frame model, the influence laws of infill walls on the earthquake damage modes of frame structures were revealed, and the numerical simulations of them were achieved. The test results show that infill walls have diagonal strut and confinement effect on frame structures, so the failure modes of frame structures are changed, which easily leads to column hinge failure mechanism. In addition, based on DIANA nonlinear finite element analysis program, a kind of separate finite element micromodel was set up. Through nonlinear finite element analysis of test models, the effectiveness of this finite element model on simulating the interaction laws between infill walls and RC frames were verified, and the influences of different material masonry infill walls on the failure modes were analyzed.
引文
[1]清华大学土木结构组,西南交通大学土木结构组,北京交通大学土木结构组.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1-9(Civil and Structural Groups of Tsinghua University,Xinan Jiaotong University,Beijing Jiaotong University.Analysis on building seismic damage in Wenchuan Earthquake[J].Journal of Building Structures,2008,29(4):1-9(in Chinese))
[2]孙柏涛,闫培雷,张明宇,等.汶川8.0级大地震极重灾区映秀镇不同建筑结构震害概述及原因简析[J].地震工程与工程,2008,28(5):1-9(Sun Baitao,Yan Peilei,Zhang Mingyu,et al.Overview on seismic damage to different structures in Yingxiu Town during Wenchuan Earthquake[J].Journal of Earthquake Engineering and Engineering Vibration,2008,28(5):1-9(in Chinese))
[3]尹保江,罗开海,薛彦涛.玉树4.14地震钢筋混凝土框架震害调查与分析[J].土木建筑与环境工程,2010,32(2):6-8
[4]金焕,戴君武.外廊式RC框架结构教学楼的抗震性能研究[J].土木工程学报,2013,46(5):71-77(Jin Huan,Dai Junwu.Study on seismic behavior of side corridor RC frame school building[J].China Civil Engineering Journal,2013,46(5):71-77(in Chinese))
[5]LotfiH R,Shing P B.An appraisal of smeared crack models for masonry shear wall analysis[J].Computers and Structures,1991,41(3):413-425
[6]Asteris P G,Kyriazopoulos A D,Vouthounis P A.The state-of-the-art in infilled frames numercal models[R].Yokohama,Japan:SEWC,2002
[7]DIANA.Finite element program:users’manual[M].The Netherlands:TNO DIANA,2008
[8]Lourenco P B.Computational strategies for masonry structures[D].Netherlands:Delft University of Technology,1996
[9]Al-Chaar G L,Mehrabi A B.Constitutive models for nonlinear finite element analysis of masonry prisms and infill walls[R].Champaign,IL:Engineer Research and Development Center,2008
[2]孙柏涛,闫培雷,张明宇,等.汶川8.0级大地震极重灾区映秀镇不同建筑结构震害概述及原因简析[J].地震工程与工程,2008,28(5):1-9(Sun Baitao,Yan Peilei,Zhang Mingyu,et al.Overview on seismic damage to different structures in Yingxiu Town during Wenchuan Earthquake[J].Journal of Earthquake Engineering and Engineering Vibration,2008,28(5):1-9(in Chinese))
[3]尹保江,罗开海,薛彦涛.玉树4.14地震钢筋混凝土框架震害调查与分析[J].土木建筑与环境工程,2010,32(2):6-8
[4]金焕,戴君武.外廊式RC框架结构教学楼的抗震性能研究[J].土木工程学报,2013,46(5):71-77(Jin Huan,Dai Junwu.Study on seismic behavior of side corridor RC frame school building[J].China Civil Engineering Journal,2013,46(5):71-77(in Chinese))
[5]LotfiH R,Shing P B.An appraisal of smeared crack models for masonry shear wall analysis[J].Computers and Structures,1991,41(3):413-425
[6]Asteris P G,Kyriazopoulos A D,Vouthounis P A.The state-of-the-art in infilled frames numercal models[R].Yokohama,Japan:SEWC,2002
[7]DIANA.Finite element program:users’manual[M].The Netherlands:TNO DIANA,2008
[8]Lourenco P B.Computational strategies for masonry structures[D].Netherlands:Delft University of Technology,1996
[9]Al-Chaar G L,Mehrabi A B.Constitutive models for nonlinear finite element analysis of masonry prisms and infill walls[R].Champaign,IL:Engineer Research and Development Center,2008
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