带暗支撑剪力墙损伤累积静力弹塑性分析
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摘要
在多垂直杆剪力墙单元模型的基础上进行改进,把多垂直杆的轴向刚度和剪切刚度相结合,即每根垂直杆传递轴力的同时还传递剪力,考虑钢材和混凝土损伤累积效应对剪力墙的影响,在上述基础上提出考虑材料损伤累积效应的带暗支撑剪力墙模型,模型更接近带暗支撑剪力墙的受力性能。利用该模型编制的相应程序,对两片分别带有型钢暗支撑和钢筋暗支撑的剪力墙模型进行弹塑性静力加载数值模拟分析,计算结果和试验结果吻合较好,说明方法应用可行。
The multiple vertical-truss shear wall element model is improved by combining the axial stiffness and the shear stiffness of the multiple vertical-truss wall,so that every vertical truss transfer axial force and shear at the same time,with the steel and concrete cumulative damage effect being taken into consideration.A model of the shear wall with concealed bracings considering material cumulative damage effect is presented,which is similar to the mechanical behavior of the shear wall with concealing bracings.Two shear walls with concealed steel bar bracings and concealed shape steel bracings,respectively,were calculated using static elastic-plastic simulative analysis,and the calculation results are similar to the test results,proving that the method is feasible.
The multiple vertical-truss shear wall element model is improved by combining the axial stiffness and the shear stiffness of the multiple vertical-truss wall,so that every vertical truss transfer axial force and shear at the same time,with the steel and concrete cumulative damage effect being taken into consideration.A model of the shear wall with concealed bracings considering material cumulative damage effect is presented,which is similar to the mechanical behavior of the shear wall with concealing bracings.Two shear walls with concealed steel bar bracings and concealed shape steel bracings,respectively,were calculated using static elastic-plastic simulative analysis,and the calculation results are similar to the test results,proving that the method is feasible.
引文
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[2]李国强,周向明,丁翔.钢筋混凝土剪力墙非线性动力分析模型[J].世界地震工程,2000,16(2):13-18(LiGuoqiang,Zhou Xiangming,Ding Xiang.Models ofreinforced concrete shear walls for nonlinear dynamicanalysis[J].World Information on EarthquakeEngineering,2000,16(2):13-18(in Chinese))
[3]Vulcano A,Bertero V V,Colotti V.Analytical modelingR/C structural walls[C]//Proceedings of 9th WCEE.Tokio-Kyoto,1988:41-46
[4]曹万林,杨兴民,张建伟,等.带不同类型组合暗支撑剪力墙抗震性能试验研究[J].建筑结构学报,2007(增1):33-40(Cao Wanlin,Yang Xingmin,Zhang Jianwei,etal.Experimental study on seismic performance of RC shearwall with different types of composite concealed bracings[J].Journal of Building Structures,2007(S1):33-40(inChinese))
[5]Shen Z Y,Dong B.An experiment-based cumulative damagemechanics model of steel under cyclic loading[J].Advancesin Structural Engineering,1997,1(1):39-46
[6]Mehanny S S F,Deierlein G G.Seismic damage and collapseassessment of composite moment frames[J].Journal ofStructural Engineering,ASCE,2001,127(9):1045-1053
[7]余天庆,钱济成.损伤理论及其应用[M].北京:国防工业出版社,1993
[8]顾祥林,黄庆华,吴周偲.钢筋混凝土柱考虑损伤累积的反复荷载-位移关系分析[J].地震工程与工程振动,2006,26(4):68-74(Gu Xianglin,Huang Qinghua,WuZhoucai.Analysis of load-displacement relationship for RCcolumns under reversed load considering accumulativedamage[J].Earthquake Engineering and EngineeringVibration,2006,26(4):68-74(in Chinese))
[9]蒋欢军,吕西林.一种宏观剪力墙单元模型应用研究[J].地震工程与工程振动,2003,23(1):38-43(JiangHuanjun,LüXilin.Research on application of macroscopicshear wall model[J].Earthquake Engineering andEngineering Vibration,2003,23(1):38-43(in Chinese))
[10]李宏男,李兵.钢筋混凝土剪力墙抗震恢复力模型及试验研究[J].建筑结构学报,2004,25(5):35-42(LiHongnan,Li Bing.Experimental study on seismic restoringperformance of reinforced concrete shear walls[J].Journalof Building Structures,2004,25(5):35-42(in Chinese))
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