密肋复合墙框格单元的损伤和耗能分析  

Study on Damage and Energy-Dissipation of the Fundamental Element of Multi-Ribbed Composite Wall

作　　者：熊耀清[1,2] 姚谦峰[3] 夏雷[3] 

机构地区：[1]清华大学土木工程系,北京100084 [2]中国建筑西南设计研究院有限公司,四川成都610081 [3]北京交通大学土木建筑工程学院,北京100044

出　　处：《沈阳建筑大学学报（自然科学版）》2011年第5期859-865,共7页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家科技支撑计划项目(2009BAJ28B01);中建股份科技研发项目(CSCEC-2009-Z-15)

摘　　要：目的分析密肋复合墙框格单元的损伤过程和耗能分担率,为研究密肋复合墙对框架结构抗地震倒塌能力的影响提供依据.方法基于能量理论,构造局部损伤指标及整体损伤指标,计算框格单元各构件在破坏过程中的耗能分担率.结果计算出外荷载下框格单元中的砌块构件的耗能分担率从62%降到18%,框格构件的耗能分担率从38%降到82%,得出了密肋复合墙框格单元从完好到破坏的整个过程中耗能转化规律.结论基于能量理论的耗能分担率能够较好地反映各构件的耗能转化规律,可进一步应用于分析地震作用下密肋复合墙体的耗能减震机理及框架填充密肋复合墙结构的抗倒塌能力.The damage process and energy-dissipation contribution rate of the fundamental element in multi- ribbed composite wall are studied for the purpose of providing a reference for the effect on seismic collapse resistance capacity of frame structure infilled with multi-ribbed composite wall. Based on energy theory, the local damage index and general damage index are proposed. And then the energy-dissipation contribution rate of the components in fundamental element is calculated, where that of the blocks decreases from 62% to 18% while that of the ribbed frames rises from 38% to 82%, showing the energy-dissipation law in the whole damage process. It draws the conclusion that the energy-dissipation contribution rate based on energy theory could effectively reflact the energy-dissipation law of the components, and it could also be applied to study the energy-dissipation mechanism of multi-ribbed composite wall and the collapse resistance capacity of frame structure infilled with multi-fibbed composite wall under earthquakes.

关 键 词：密肋复合墙 框格单元 局部损伤指标 整体损伤指标 耗能分担率 

分 类 号：TU375[建筑科学—结构工程]