基于纤维模型叠合板式剪力墙非线性分析
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摘要
考虑叠合板式剪力墙(SSSW)墙体截面弯曲变形、轴向变形及剪切变形对单元动力特性的影响,应用纤维模型模拟墙体弯曲与轴向变形相互作用的非线性滞回特性,通过剪切弹簧模型对剪切变形进行模拟。采用此模型对不同变幅加载路径下的4片不同配筋形式和轴压比的墙体进行数值模拟,并与拟静力试验结果进行对比。结果表明,考虑剪切变形的纤维模型可以较好地模拟SSSW的非线性特性,可以采用此模型进行SSSW结构弹塑性分析。
The bending,axial and shear deformation of the superimposed slab shear wall (SSSW) affect its dynamic property.To consider this effect,the fiber model is adopted to simulate the nonlinear hysteretic interaction of bending deformation and axial deformation,and the shear deformation is modeled by the shear spring model.Numerical simulations of four SSSWs with different boundary restraints and axial compression ratios using this model are carried out under different loading patterns.The comparison between the results of cyclic test and numerical simulations demonstrates that the nonlinear behavior of the SSSW can be simulated by the fiber model considering shear deformation,and the proposed model can be applied further to the inelastic analysis of structures with such SSSW.
The bending,axial and shear deformation of the superimposed slab shear wall (SSSW) affect its dynamic property.To consider this effect,the fiber model is adopted to simulate the nonlinear hysteretic interaction of bending deformation and axial deformation,and the shear deformation is modeled by the shear spring model.Numerical simulations of four SSSWs with different boundary restraints and axial compression ratios using this model are carried out under different loading patterns.The comparison between the results of cyclic test and numerical simulations demonstrates that the nonlinear behavior of the SSSW can be simulated by the fiber model considering shear deformation,and the proposed model can be applied further to the inelastic analysis of structures with such SSSW.
引文
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[3]何放龙,朱亚鹏.一种带边柱的钢筋混凝土剪力墙空间非线性分析模型[J].工程力学,2008,25(6):116―121.He Fanglong,Zhu Yapeng.A3D model in nonlinearanalysis of reinforced concrete shear wall with side column[J].Engineering Mechanics,2008,25(6):116―121.(in Chinese)
[4]陈伯望,王海波,沈蒲生.剪力墙多垂直杆单元模型的改进及应用[J].工程力学,2005,22(3):183―189.Chen Bowang,Wang Haibo,Shen Pusheng.An improved multi-vertical-truss-element model of shear wall and its application[J].Engineering Mechanics,2005,22(3):183―189.(in Chinese)
[5]孙景江,江近仁.高层建筑抗震墙非线性分析的扩展铁木辛哥分层梁单元[J].地震工程与工程振动,2001,21(2):78―83.Sun Jingjiang,Jiang Jinren.Extended Timoshenko layered beam element for nonlinear analysis of RC high-rise buildings with structural walls[J].Earthquake Engineering and Engineering Vibration,2001,21(2):78―83.(in Chinese)
[6]Kabeyasawa T,Shioara H,Otani S.U.S.-Japan cooperative research on R/C full-scale building test-part5:Discussion on dynamic response system[C].Procs.8th WCEE,1984,6:627―634.
[7]Ozcebe G,Saatcioglu M.Hysteretic shear model for reinforced concrete members[J].Journal of Structure Engineering,1989,115(1):132―148.
[8]龚治国,吕西林,姬守中.不同边缘构件约束的剪力墙抗震性能[J].武汉大学学报(工学版),2007,40(2):92―98.Gong Zhiguo,Lu Xilin,Ji Shouzhong.Study of seismic behavior of R.C.shear wall with different boundary restraints[J].Engineering Journal of Wuhan University,2007,40(2):92―98.(in Chinese)
[9]叶献国,徐勤,李康宁,种迅.地震中受损钢筋混凝土建筑弹塑性时程分析与振动台试验研究[J].土木工程学报,2003,36(12):20―25.Ye Xianguo,Xu Qin,Li Kangning,Chong Xun.Experimental research on inelastic time-history analysis and shaking table test for a reinforced concrete building damaged in earthquake[J].China Civil Engineering Journal,2003,36(12):20―25.(in Chinese)
[10]李康宁,洪亮,叶献国.结构三维弹塑性分析方法及其在建筑物震害研究中的应用[J].建筑结构,2001,31(3):53―61.Li Kangning,Hong Liang,Ye Xianguo.Nonlinear analysis of3D models and application in research of a building damaged in earthquake[J].Building Structure,2001,31(3):53―61.(in Chinese)
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