冯力强 牛昌林 李锋 何翰卿 杨溥 刘立平 李英民

摘 要：为解决钢框架钢板剪力墙结构振动台试验缩尺模型中的剪力墙钢板厚度过薄的问题，依据结构初始抗侧刚度或承载能力等效的原则，提出中心支撑和I形钢板剪力墙两种等效模型，采用数值分析的方法，通过有限元软件ABAQUS建立精细化模型，对原型结构的钢板剪力墙和等效模型的刚度与承载力等抗震性能进行了对比分析。研究结果表明：两种等效替代模型均具有良好的耗能能力，能够在抗侧刚度或承载能力方面满足原型结构的等效设计要求，解决了模型结构中剪力墙钢板厚度小的难题;中心支撑等效方案仅可实现剪力墙的刚度或承载力单目标等效，而I形钢板剪力墙可以通过控制开洞口的尺寸，实现其刚度和承载力同时等效，为钢板剪力墙振动台试验模型的等效替代提供了参考。

关键词：振动台试验;钢板剪力墙;等效模型;抗震性能

中图分类号：TU391;TU352.1 文献标志码：A 文章编号：2096-6717（2021）03-0016-08

Abstract： In the shaking table test of steel frames-steel shear wall system， a problem is that the thickness of the steel plate shear wall（SPSW） in the scale model is too small. In order to solve this problem， this paper proposes two equivalent models： concentrically braced frames and I shape of steel plate shear walls. Both of the two models are based on principles of equivalent initial lateral stiffness or bearing capacity of the structure. The finite element analysis program ABAQUS was used to establish the refined model， using the method of numerical analysis. And the stiffness， bearing capacity and other seismic performance of the prototype SPSW and equivalent models were compared and analyzed. The results show the two equivalent substitution models both have good energy consumption capacity and can solve the problem of small thickness. In addition， the concentrically braced frames model can only make sure either stiffness or bearing capacity equivalent， but I shape of steel plate shear walls model can ensure both stiffness and bearing capacity equivalent， which provides some suggestions for the equivalent models of SPSW in shaking table tests.

Keywords： shaking table tests; steel plate shear wall; equivalent model; seismic performance

鋼板剪力墙作为一种抗震性能理想的抗侧力构件，多应用于高层和超高层建筑中，受力性能类似于底端嵌固的竖向悬臂梁[1]。近年来的试验和理论研究表明[2-3]，利用钢板屈曲后强度可以提高结构的承载力和延性。目前，对四边连接钢板剪力墙研究比较充分，发现四边连接钢板剪力墙存在一些不足[4-7]，如拉力场会在框架柱中产生较大弯矩，对边缘构件刚度需求较高;不利于设置门窗洞口，对建筑使用功能有一定限制等。……