强震作用下钢筋混凝土结构的数值模拟
|
摘要
强震作用下建筑结构的抗倒塌能力是基于性能抗震设计的核心目标,故对建筑结构在强震作用下的复杂非线性行为特别是倒塌破坏模式进行模拟和预测对于研究建筑物的安全性以及评估地震损失有重大意义。基于目前结构数值模拟的最新研究进展,利用大型通用有限元分析软件MSC.MARC平台,提出可用于钢筋混凝土框架剪力墙结构地震响应分析的弹塑性数值分析模型,并通过一个实际算例演示该分析模型在模拟RC框剪结构强震作用下倒塌过程,表明其可用于RC框剪结构复杂抗震非线性行为的模拟和预测
Structural collapse safety under strong earthquakes is the most important objective of performance-based seismic design.So it is necessary to precisely simulate the complex nonlinear behaviors especially the potential collapse mode of the structure.Based on the new progress of study on structural numerical simulation,elasto-plastic numerical analytical model for reinforced concrete(RC) frame-shear-wall structures are proposed through the general-purpose finite element package of MSC.Marc that carries significant capacity of solving nonlinear problems.Dynamic time-history analysis for a 18-storey RC frame-shear-wall structure designed according to the current Chinese code for seismic design are carried out to illustrate the capacity of the proposed model.And the results show that the proposed model can simulate the collapse process of the structure under strong earthquake with an excellent nonlinear analysis capacity.
Structural collapse safety under strong earthquakes is the most important objective of performance-based seismic design.So it is necessary to precisely simulate the complex nonlinear behaviors especially the potential collapse mode of the structure.Based on the new progress of study on structural numerical simulation,elasto-plastic numerical analytical model for reinforced concrete(RC) frame-shear-wall structures are proposed through the general-purpose finite element package of MSC.Marc that carries significant capacity of solving nonlinear problems.Dynamic time-history analysis for a 18-storey RC frame-shear-wall structure designed according to the current Chinese code for seismic design are carried out to illustrate the capacity of the proposed model.And the results show that the proposed model can simulate the collapse process of the structure under strong earthquake with an excellent nonlinear analysis capacity.
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.
[2]汪训流,陆新征,叶列平.往复荷载下钢筋混凝土柱受力性能的数值模拟[J].工程力学,2007,24(12):76-81.
[3]叶列平,陆新征,马千里,等.混凝土结构抗震非线性分析模型、方法及算例[J].工程力学,2006,23(S2):131-140.
[4]缪志伟,陆新征,叶列平.分层壳单元在剪力墙结构有限元计算中的应用[J].建筑结构学报,2006,27(S2):932-935.
[5]Zatar W,Mutsuyoshi H.Residual displacements of con-crete bridge piers subjected to near field earthquakes[J].ACIStructural Journal,2002.99(6):740~749.
[6]陈勤.钢筋混凝土双肢剪力墙静力弹塑性分析[D].北京:清华大学,2002.
[7]GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[8]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.
[2]汪训流,陆新征,叶列平.往复荷载下钢筋混凝土柱受力性能的数值模拟[J].工程力学,2007,24(12):76-81.
[3]叶列平,陆新征,马千里,等.混凝土结构抗震非线性分析模型、方法及算例[J].工程力学,2006,23(S2):131-140.
[4]缪志伟,陆新征,叶列平.分层壳单元在剪力墙结构有限元计算中的应用[J].建筑结构学报,2006,27(S2):932-935.
[5]Zatar W,Mutsuyoshi H.Residual displacements of con-crete bridge piers subjected to near field earthquakes[J].ACIStructural Journal,2002.99(6):740~749.
[6]陈勤.钢筋混凝土双肢剪力墙静力弹塑性分析[D].北京:清华大学,2002.
[7]GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[8]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.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心