- 摘 要
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刘 欠1, 朱群红2, 赵伟1,3
(1 江苏科技大学土木与建筑工程学院,镇江 212001;2 浙江省建筑设计研究院, 杭州 310006;3 浙江杭萧钢构股份有限公司,杭州 310003)[摘要] 为实现钢结构抗侧力体系的工业化,对钢框架内填预制钢筋混凝土剪力墙进行了低周反复荷载试验。考察了内填墙裂缝的开展和结构变形能力,分析了结构的传力机理、破坏机理、滞回曲线、刚度退化、变形及延性、耗能能力等。试验结果表明:试件呈内填墙压碎的延性破坏模式,加载过程中,抗剪连接件(U形筋)未发现疲劳破坏,试件的后期承载力退化缓慢,试件的变形能力、延性性能以及耗能能力均得到大幅提高。在试验过程中,钢框架与混凝土表现出了较好的整体性能,内填预制钢筋混凝土剪力墙钢框架具有良好的抗震性能,适合在地震区应用。
[关键词] 剪力墙;钢框架;滞回性能;试验研究
中图分类号:TU375.4 文献标识码:A 文章编号:1002-848X(2011) Sl-0264-05Experimental study of steel frames with infill prefabricated reinforce-concrete shear walls
Liu Qian1, Zhu Qunhong2, Zhao Wei1,3
(1 School of Civil and Architecture Engineering, Jiangsu University of Science and Technology, Zhenjiang 212001, China; 2 Zhejiang PROV. Institute of Arclutectural Design and Research, Hangzhou 310006, China; 3 Zhejiang Hangxiao Steel Structure Co., Ltd., Hangzhou 310003, China)Abstract: To realize the industrialized lateral resistant system in steel structure,the low cyclic loading test was carried out for steel frames with infill prefabricated reinforce-concrete shear walls( SFPCW). The crack development in infill walls and deformation performance of SFPCW were investigated,and the force transfer mechanism, failure mode, hysteretic behavior, stiffness degradation, deformation and ductility, and energy dissipation of composite structure were analyzed too. Test results show that the concrete crushing in infill wall was the main failure pattem and the failure mode was ductile failure. Within the whole loading period, low cyclic fatigue of shear connectors(U shapebars) didn't occur, and the performance of the specimens, including post-peak strength degradation, ductility behavior, deformation capacity, and energy dissipation, were significantly improved. During the whole test, the steel and concrete components work integrally. And the SFPCW have good seisnuc performances and could be widely used in seisnuc areas.
Keywords: shear wall; steel frames; hysteretic behavior; experimental study