一种空间剪力墙非线性计算模型
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摘要
我国地震区的高层建筑结构一般都要布置复杂的钢筋混凝土剪力墙,如何有效模拟这些复杂墙体的力学性能就成为高层结构弹塑性分析的关键。该文在两元件墙单元模型的基础上提出了一种空间墙非线性分析模型,该模型考虑了墙体的轴向、弯曲和剪切弹塑性变形,并能合理考虑墙-墙、梁-墙交界处结点的位移协调。与试验结果对比分析表明,该文建立的墙单元模型具有自由度少和计算稳定等特点,可用于钢筋混凝土剪力墙结构的初步设计或整体性能评价,为复杂墙体弹塑性分析提供了可行的方法。
Complex reinforced concrete shear walls are usually used in tall buildings,especially in China seismic regions.How to simulate the mechanical behaviors of these walls is important to elastic-plastic analysis for tall buildings.Based on two-spring model,a nonlinear model for spatial walls is proposed.In this model,the axial,bending and shear plastic deformation of the walls can be considered,while the deformation coordination of the node connected the wall-wall and beam-wall is also considered.To validate the proposed model,comparison is made between analytical and experimental load-displacement responses under cyclic loadings.The analysis is in good agreement with experimental results and show that the model proposed in this paper has less degrees of freedom and higher accuracy.This model offers a feasible analysis method which is fit for the stages of primary design and entire performance evaluation of complex reinforced concrete shear walls.
Complex reinforced concrete shear walls are usually used in tall buildings,especially in China seismic regions.How to simulate the mechanical behaviors of these walls is important to elastic-plastic analysis for tall buildings.Based on two-spring model,a nonlinear model for spatial walls is proposed.In this model,the axial,bending and shear plastic deformation of the walls can be considered,while the deformation coordination of the node connected the wall-wall and beam-wall is also considered.To validate the proposed model,comparison is made between analytical and experimental load-displacement responses under cyclic loadings.The analysis is in good agreement with experimental results and show that the model proposed in this paper has less degrees of freedom and higher accuracy.This model offers a feasible analysis method which is fit for the stages of primary design and entire performance evaluation of complex reinforced concrete shear walls.
引文
[1]江见鲸,陆新征,叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005:144―165.Jang Jianjing,Lu Xinzheng,Ye Lieping.Finite elementanalysis of concrete structures[M].Beijing:TsinghuaUniversity Press,2005:144―165.(in Chinese)
[2]卓幸福,蔡益燕.用墙板单元分析框架剪力墙机构[J].建筑结构学报,1992,13(3):29―41.Zhuo Xingfu,Cai Yiyan.Analysis of frame structureswith shear walls using wall panel elements[J].Journal ofBuilding Structures,1992,13(3):29―41.(in Chinese)
[3]Vulcano A,Bertero V V,Colotto V.Analytical model forpredicating the lateral response of RC shear walls:Evaluation of their reliability[R].Berkeley:Universityof California,1987.
[4]夏逸鸣.钢框架-钢筋混凝土剪力墙混合结构的二阶非弹性分析[D].南京:东南大学,2001.Xia Yiming.The nonlinear analysis of steel frame-reinforced concrete shear walls[D].Nanjing:SoutheastUniversity,2001.(in Chinese)
[5]朱杰江.混凝土结构非线性分析研究以及实例工程应用[D].上海:同济大学,2005.Zhu Jiejiang.The study and application of nonlinearanalysis method of reinforced concrete structures[D].Shanghai:Tongji University,2005.(in Chinese)
[6]司林军,李国强,孙飞飞.钢筋混凝土剪力墙二元件模型的有效性研究[J].结构工程师,2008,24(4):19―24.Si Linjun,Li Guoqiang,Sun Feifei.Study on validity oftwo spring model for reinforced concrete shear walls[J].Structural Engineers,2008,24(4):19―24.(in Chinese)
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[8]汪梦甫,周锡元.钢筋混凝土剪力墙多垂直杆非线性单元模型的改进及其应用[J].建筑结构学报,2002,23(1):38―42.Wang Mengfu,Zhou Xiyuan.The improved parallelmulti-component model for the nonlinear seismicresponse analysis of RC walls and its application[J].Journal of Building Structures,2002,23(1):38―42.(inChinese)
[9]陈伯望,王海波,沈浦生.剪力墙多垂直杆单元的改进及应用[J].工程力学,2005,22(3):183―189.Chen Bowang,Wang Haibo,Shen Pusheng.An improvedmulti-vertical-truss-element model of shear wall and itsapplication[J].Engineering Mechanics,2005,22(3):183―189.(in Chinese)
[10]爱德华.L.威尔逊.结构静力与动力分析[M].北京金土木软件技术有限公司等译.北京:中国建筑工业出版社,2006:72―83.Wilson E L.Static and dynamic analysis of structures[M].Translated by Beijing Civil King SoftwareTechnology Company Limited,et al.Beijing:ChinaArchitecture Industry Press,2006:72―83.(in Chinese)
[11]方明霁.三维支撑钢框架结构弹塑性地震反应实用分析方法研究[D].上海:同济大学,2005.Fang Mingji.Study on practical 3-D plastic dynamicanalysis method of braced steel frames[D].Shanghai:Tongji University,2005.(in Chinese)
[12]傅剑平,吴雁江,皮天祥,等.工字形截面延性剪力墙肢抗震抗剪性能试验[J].重庆大学学报(自然科学版),2004,27(12):52―55.Fu Jianping,Wu Yanjiang,Pi Tianxiang,et al.Experimental research on seismic shear capacity ofI-shape ductile reinforced concrete structural walls[J].Journal of Chongqing University(Natural ScienceEdition),2004,27(12):52―55.(in Chinese)
[13]梁博.钢框架-混凝土筒体混合结构抗震性能振动台试验研究[D].西安:西安建筑科技大学,2005.Liang Bo.Shaking table test of a steel-RC hybrid wallsystem[D].Xi’an:Xi’an University of Architecture andTechnology,2005.(in Chinese)楼层刚心位移/mm楼层刚心位移/mm
[2]卓幸福,蔡益燕.用墙板单元分析框架剪力墙机构[J].建筑结构学报,1992,13(3):29―41.Zhuo Xingfu,Cai Yiyan.Analysis of frame structureswith shear walls using wall panel elements[J].Journal ofBuilding Structures,1992,13(3):29―41.(in Chinese)
[3]Vulcano A,Bertero V V,Colotto V.Analytical model forpredicating the lateral response of RC shear walls:Evaluation of their reliability[R].Berkeley:Universityof California,1987.
[4]夏逸鸣.钢框架-钢筋混凝土剪力墙混合结构的二阶非弹性分析[D].南京:东南大学,2001.Xia Yiming.The nonlinear analysis of steel frame-reinforced concrete shear walls[D].Nanjing:SoutheastUniversity,2001.(in Chinese)
[5]朱杰江.混凝土结构非线性分析研究以及实例工程应用[D].上海:同济大学,2005.Zhu Jiejiang.The study and application of nonlinearanalysis method of reinforced concrete structures[D].Shanghai:Tongji University,2005.(in Chinese)
[6]司林军,李国强,孙飞飞.钢筋混凝土剪力墙二元件模型的有效性研究[J].结构工程师,2008,24(4):19―24.Si Linjun,Li Guoqiang,Sun Feifei.Study on validity oftwo spring model for reinforced concrete shear walls[J].Structural Engineers,2008,24(4):19―24.(in Chinese)
[7]司林军.空间钢框架-混凝土剪力墙结构弹塑性地震反应实用分析方法研究[D].上海:同济大学,2010.Si Linjun.Study on practical plastic dynamic analysismethod of spatial steel frame-reinforced concrete shearwall structures[D].Shanghai:Tongji University,2010.(in Chinese)
[8]汪梦甫,周锡元.钢筋混凝土剪力墙多垂直杆非线性单元模型的改进及其应用[J].建筑结构学报,2002,23(1):38―42.Wang Mengfu,Zhou Xiyuan.The improved parallelmulti-component model for the nonlinear seismicresponse analysis of RC walls and its application[J].Journal of Building Structures,2002,23(1):38―42.(inChinese)
[9]陈伯望,王海波,沈浦生.剪力墙多垂直杆单元的改进及应用[J].工程力学,2005,22(3):183―189.Chen Bowang,Wang Haibo,Shen Pusheng.An improvedmulti-vertical-truss-element model of shear wall and itsapplication[J].Engineering Mechanics,2005,22(3):183―189.(in Chinese)
[10]爱德华.L.威尔逊.结构静力与动力分析[M].北京金土木软件技术有限公司等译.北京:中国建筑工业出版社,2006:72―83.Wilson E L.Static and dynamic analysis of structures[M].Translated by Beijing Civil King SoftwareTechnology Company Limited,et al.Beijing:ChinaArchitecture Industry Press,2006:72―83.(in Chinese)
[11]方明霁.三维支撑钢框架结构弹塑性地震反应实用分析方法研究[D].上海:同济大学,2005.Fang Mingji.Study on practical 3-D plastic dynamicanalysis method of braced steel frames[D].Shanghai:Tongji University,2005.(in Chinese)
[12]傅剑平,吴雁江,皮天祥,等.工字形截面延性剪力墙肢抗震抗剪性能试验[J].重庆大学学报(自然科学版),2004,27(12):52―55.Fu Jianping,Wu Yanjiang,Pi Tianxiang,et al.Experimental research on seismic shear capacity ofI-shape ductile reinforced concrete structural walls[J].Journal of Chongqing University(Natural ScienceEdition),2004,27(12):52―55.(in Chinese)
[13]梁博.钢框架-混凝土筒体混合结构抗震性能振动台试验研究[D].西安:西安建筑科技大学,2005.Liang Bo.Shaking table test of a steel-RC hybrid wallsystem[D].Xi’an:Xi’an University of Architecture andTechnology,2005.(in Chinese)楼层刚心位移/mm楼层刚心位移/mm
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