耗能钢连梁抗震性能的长高比敏感性分析  

Influence analysis of span-depth ratio on seismic performance of energy dissipation steel coupling beam

作　　者：吴传阳 赵健辰 孙建[1] 邱洪兴[1] Wu Chuan-yang;Zhao Jian-chen;Sun Jian;Qiu Hong-xing(College of Civil Engineering,Southeast University,Nanjing 211102,China)

机构地区：[1]东南大学土木工程学院,江苏南京211102

出　　处：《工程抗震与加固改造》2022年第4期60-68,共9页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金项目(51708107);江苏省自然科学基金项目(BK20170668)。

摘　　要：耗能钢连梁已被广泛应用于消能减震结构中,但关于连梁长度对其抗震性能影响的研究还不够充分。因此,本文基于ABAQUS软件对腹板采用低屈服点钢和普通钢制成共10个耗能连梁进行分析。利用已有试验验证了本文有限元建模方法及材料参数选取的准确性,研究了长高比对不同材料耗能连梁抗震性能及破坏模式的影响。研究结果表明,相较于普通钢连梁,低屈服点钢连梁在耗能能力、刚度、破坏形式等方面对长高比的敏感性更低,其超强系数对长高比的敏感性更高,且在同尺寸下具有更高的耗能效率。最后对实际工程中钢连梁的选择和设计提供了建议。Energy dissipation steel coupling beams have been widely used in energy dissipation structure,but the influence of span-depth ratio on the seismic performance of coupling beams is not fully studied.Therefore,in this paper,based on ABAQUS software,ten energy dissipation coupling beams made of low yield point steel and ordinary steel are analyzed.The accuracy of finite element modeling method and material parameter selection in this paper is verified by using existing tests.The influence of span-depth ratio on seismic performance and failure mode of energy dissipation coupling beams with different materials is studied.The results show that,compared with the ordinary steel coupling beam,the low yield point steel coupling beam has lower sensitivity to the span-depth ratio in terms of energy dissipation capacity,stiffness and failure mode,and its overstrength factor has higher sensitivity to the span-depth ratio,and it has higher energy dissipation efficiency at the same size.Finally,some suggestions are given for the selection and design of steel coupling beam in practical engineering.

关 键 词：低屈服点钢 长高比 抗震性能 超强系数 连梁 

分 类 号：TU352.11[建筑科学—结构工程] TU391