节点文献
双向交叉连接件连接的剪力墙抗震性能分析
Seismic performance analysis of shear wall connected with bidirectional cross connector
【摘要】 本文分析一种新型双向交叉连接件在钢板组合剪力墙中的应用。基于ABAQUS有限元模型,遍历不同钢材强度等级下连接件长厚比、跨高比对抗震性能影响进行了分析,如:滞回曲线、骨架曲线、承载能力、延性、刚度退化、耗能能力等。结果表明:钢梁跨高比为12.7,增大连接件钢材强度,试件承载力先增后减,延性性能、耗能能力较大幅度降低,因此连接件钢材强度等级宜取Q235,长厚比取11.1~13.9;连接件不同钢材强度,其承载能力、延性性能、耗能能力均随连接件梁端长厚比增大而提升,强度为Q345,长厚比宜取12.2~13.9;强度为Q390,长厚比宜取12.8~13.9。跨高比对结构滞回性能影响较大,跨高比在6.2~11.1范围内,随跨高比增加,结构初始刚度、承载能力降低,但延性、耗能能力有较大幅度提高;在4.1~5.3范围内,随跨高比增加,承载能力、延性性能、耗能能力均提升。为满足延性、低经济考虑,跨高比宜取5.3~8.6。
【Abstract】 The application of a new bidirectional cross connector in steel plate combined shear wall structure is analyzed. Based on the ABAQUS finite element model, the long and thickness ratio of connector beam and the span height ratio under different steel strength grades, are analyzed, such as the hysteresis curve, the skeleton curve, the carrying capacity, the ductility, the stiffness degradation, and the energy consumption capacity, etc. The results show that when the span height ratio of the steel beam is 12.7, increasing the steel strength of the connector, the bearing capacity of the specimen increases first and then decreases, the ductility and energy consumption capacity is greatly reduced.Therefore, the steel strength grade of the connector should be Q235, and the length and thickness ratio should be 11.1~13.9. With different steel strength of the connector, the bearing capacity, ductility performance and energy consumption capacity of the connector are improved with the increase of the length and thickness ratio of the connector beam end.The steel strength of the connector is Q345, and the length and thickness ratio is suitable for 12.2~13.9; the strength is Q390, and the length and thickness ratio is suitable for 12.8~13.9. Span height ratio has a great impact on the structural hysteresis performance. When the span height ratio is in the range of 6.2~11.1, as the span height ratio increases, the initial stiffness, bearing capacity of the structure are reduced, but the ductility and energy consumption capacity is greatly improved; Within the range of 4.1~5.3, with the increase of the span height ratio, the carrying capacity, ductility performance and energy consumption capacity are all improved. In order to meet the ductility and low economic considerations, the span height ratio should be taken from 5.3~8.6.
【Key words】 bidirectional cross connector; steel plate combined shear wall; seismic performance; finite element analysis;
- 【文献出处】 工程抗震与加固改造 ,Earthquake Resistant Engineering and Retrofitting , 编辑部邮箱 ,2023年02期
- 【分类号】TU352.11
- 【下载频次】30