摘要
提出一种带加劲肋和混凝土约束面板的组合钢板墙，主要应用于箱板钢结构装配式住宅底部加强区。设计制作了2个1／3比例的钢板墙试件，1个为带竖向加劲的钢板墙，1个为带竖向加劲和混凝土约束面板的组合钢板墙，并进行了低周反复加载试验。研究了试件的破坏过程、破坏模式、承载力、变形性能等，重点分析了混凝土约束面板对试件抗震性能的影响。试验结果表明：带竖向加劲钢板墙试件的破坏始于钢板和加劲肋的屈曲，组合钢板墙试件的破坏始于钢板的屈曲和混凝土板产生裂纹；最终破坏时，带竖向加劲肋的钢板墙上形成稀疏的大尺寸交叉拉力带，而组合钢板墙则是在加劲肋与螺栓围成的小区格内形成“棱台”状交叉拉力带；相比于只带竖向加劲肋的钢板墙，组合钢板墙承载力更高，延性更好，滞回曲线相对饱满，耗能能力更强，抗侧刚度和承载力退化更缓慢。
A composite steel plate wall with stiffening ribs and concrete restraint panels was proposed and was mainly used in the reinforced area of the prefabricated residual building with box-type steel structure. In the experiment, two specimens of one-third of full scale of original steel plate wall were designed and manufactured： one is a steel plate wall with vertical stiffeners; the other one is a composite steel plate wall with vertical stiffeners and concrete confined panels. On this basis, a series of quasi-static loading tests were carried out. In the paper, the failure process, failure mode, bearing capacity and deformation performance of the specimen were explored, and it focused on the intlueuce of concrete restraint panel on the seismic behavior of the specimen. The results showed that the failure of the steel wall specimens with vertical stiffening steel plates began with the buckling of steel plate and stiffening rib and the buckling of the steel plate; however, the cracking of the concrete slab was the starting point of the failure of the composite steel wall specimens. In the final failure process, several sparse large crossed tensile belts were formed on the steel plate wall with vertical stiffeners. The composite steel plate walls became the bevel-shaped crossed tensile belts in the cells between the stiffening ribs and bolts. Compared with the steel wall with just vertical stiffening rib, the composite steel wall had higher bearing capacity, better ductility, relatively full hysteresis curves, stronger energy dissipation capacity, and slower degradation of lateral stiffness and bearing capacity.
作者
兰涛
赵廷涛
门进杰
宋昭
赵钿
王凌云
LAN Tao,ZHAO Tingtao,MEN Jinjie,SONG Zhao,ZHAO Tian,WANG Lingyun(1.School of Civil Engineering, Xi＇an University of Architecture ＆ Technology, Xi＇an 710055, China;2.CSIC International Engineering Co. Ltd, Beijing 100021, China;3.China Architecture Design Group, Beijing 100089, China)
出处
《工业建筑》
CSCD
北大核心
2018年第9期56-62,160,共8页
Industrial Construction
基金
国家重点研发计划项目(2017YFC0703406)
首规委支持科研基金项目(2017-016)
陕西省教育厅重点实验室项目(17JS062)
关键词
箱板式钢结构
底部加强区墙体
拟静力试验
抗震性能
box-type steel structure
reinforced area wall in the bottom
pseudo-static test
seismic performance
