摘要
研发了一种适用于低多层建筑的轻型装配式钢管混凝土框架-耗能减震墙结构,具有自重较轻、构造简单、施工简便等优点。为研究其抗震性能,进行了3个足尺轻型装配式框架-耗能减震地聚物墙模型的低周反复荷载试验,研究参数为地聚物墙-框架的连接方式和橡胶阻尼层设置方式。基于试验对比研究了试件的承载力、延性、滞回、耗能、损伤演化规律和破坏特征等,分析了橡胶阻尼层位置对整体结构抗震性能的影响。研究表明:地聚物墙与框架间设置橡胶阻尼层,提高了结构的整体延性和耗能能力,但承载力有所降低;框架与地聚物墙采用变形可控的弱连接,降低了框架传递给墙体的荷载,减轻了墙体损伤;轻型装配式钢管砼框架-耗能减震地聚物墙结构具有良好的抗震性能,可满足地震区低多层建筑的抗震设防要求。
A new type of light-weight assembled concrete filled steel tubular(CFST)frame filled with energy dissipation wall structure is proposed in this paper,which is suitable for low-rise buildings.It has the advantages of light weight,simple structure and easy to be constructed.In order to study the seismic performance of the structure,three full-scale light-weight assembled frame-geopolymer wall specimens with energy dissipation layer were tested under low-cycle reversed loading.The research parameters are the connection mode of geopolymer wall frame and the location of rubber damping layer in the wall.Based on the experiments,the bearing capacity,ductility,hysteresis,energy consumption,damage evolution and failure characteristics of the specimens are comparatively studied,and the influence of the location of rubber damping layer on the seismic performance of the whole structure is analyzed.The results show that:the rubber damping layer between the geopolymer wall and the frame improves the overall ductility and energy dissipation capacity of the structure,but the load bearing capacity is slightly reduced;the controllable deformation connnection between the CFST frame and the geopolymer wall reduces the load transmitted from the frame to the wall and reduces the damage of the wall;the lightweight assembled CFST frame-geopolymer wall with energy dissipation layer structure has good seismic performance.It can meet the seismic fortification requirements of low multi-storey buildings in earthquake area.
作者
周中一
靳宇航
庞新龙
罗诒红
ZHOU Zhongyi;JIN Yuhang;PANG Xinlong;LUO Yinhong(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China)
出处
《结构工程师》
2021年第4期91-99,共9页
Structural Engineers
基金
中国地震局工程力学研究所基本科研业务费专项资助项目(2019EEEVL0104,CEA201919)
国家重点研发计划资助(2019YFC1509304)。
关键词
轻型装配式框架
钢管混凝土柱
变形可控连接
耗能减震
地聚物混凝土墙
lightweight assembled frame
concrete filled steel tubular
controllable deformation connection
passive energy dissipation
geopolymer concrete wall
