循环荷载作用下高层钢结构建筑填充墙体性能与连接构造研究

Study on Performance and Connection Detail of Filled Walls in High-Rise Steel Structures under Cyclic Loadings

为了研究不同墙体连接构造下高层建筑钢结构的抗震性能,进行了蒸压轻质加气混凝土(ALC)条板或砌块填充钢管混凝土框架结构的低周反复加载试验。根据填充墙施工安装工艺、钢结构特点和墙板类型,介绍了大板、条板和砌块等轻质墙体与钢框架的连接构造。通过试验研究了U形钢卡、钩头螺栓、摇摆连接件和角钢等连接构造对墙板抗震性能的影响。试验研究表明,在地震作用下,用U形钢卡或角钢内嵌与摇摆件外挂ALC条板的钢管混凝土框架结构具有良好的耗能能力;采用U形钢卡、钩头螺栓、摇摆件和角钢等合理构造措施,可以确保轻质墙体与钢管混凝土框架在地震作用下能协同工作和共同受力,并具有很好的安全保障;摇摆件连接由于具有良好的耗能性能,震后墙板基本无破坏,值得推广应用。

To study the seismic performance of high rise steel structures with different wall connectors, concrete-filled steel tubular （CFST） frames filled with aerated lightweight concrete （ALC） wall panels or blocks are tested under low cyclic loading. Based on the filling wall installation technology, the features of steel structure and panel types, the connections between light walls （such as plates, strips and blocks） and steel frames are summarized. The effect of different connections on the seismic performance of wall is evaluated through experimental studies. The test resuhs show the CFST frame structures embedded with ALC panels by the U typed connectors or steel angles and plugged with ALC panels by the rocking connectors have good energy dissipation capacities. Using reasonable measures of U- typed connector, hooked bolt, rocking connector and steel angle, ALC panels or blocks and CFST frames can work together to resist seismic load. Due to the excellent energy dissipation capacity of rocking connectors, the wall damage rarely appeared after the earthquake, and thus this technique is worth using widely.