控制剪力墙连梁构件失效模式的实用设计方法  

PRACTICAL DESIGN METHODS FOR CONTROLLING FAILURE MODES OF COUPLING BEAMS

作　　者：张松[1] 肖自强[1] 张建明[1] 

机构地区：[1]中国中元国际工程公司,北京100089

出　　处：《工业建筑》2010年第S1期353-355,222,共4页Industrial Construction

基　　金：国家自然科学基金创新研究群体资助项目(50621062)

摘　　要：为了满足对结构抗震设计的更高要求或实现基于性能的抗震设计方法,对连梁构件的受力和破坏机理进行了分析,提出了连梁构件失效模式判断系数fλm,它既能考虑连梁构件的外部因素(剪切反力和弯曲反力)又能考虑截面的内部因素(极限承载力)。选取了对连梁构件失效模式起主要作用的跨高比作为参数,设计了不同跨高比的四个连梁构件,并采用有限元中的实体单元进行了弹塑性数值模拟,计算结果证实了采用提出的连梁构件失效模式判断系数对连梁失效模式判断是合理且可行的,并根据计算结果给出了不同跨高比连梁构件失效模式系数的界限值。从而可对一般工程中的剪力墙连梁构件进行设计或校核。In order to develop seismic design method or achieve performance-based seismic design method,the judgement coefficient for failure modes of coupling beams was given based on the analysis of bearing and failure mechanism.The coefficient contains reaction influence of shearing and bending also has relation with ultimate bearing capacity of cross section.Four coupling beams with different span-depth ratios were desigen,and calculated with solid element method.The calculate results confirmed that the coupling beams judgement coefficient for failure modes was reasonable and feasible.Based on the calculate results,the limit value of coupling beam judgement coefficient for failure modes was given..

关 键 词：连梁 失效模式判断系数 失效模式 设计方法 

分 类 号：TU398.2[建筑科学—结构工程]