装配式轻钢框架-带暗支撑轻墙体组合结构抗震性能试验研究  

Experimental study on seismic performance of fabricated composite structure of lightweight steel frame-lightweight wall with concealed support

作　　者：贾穗子[1] 曹万林[2] 任乐乐 JIA Suizi;CAO Wanlin;REN Lele(School of Engineering and Technology,China University of Geosciences（Beijing）,Beijing 100083,China;Key Laboratory of Urban and Engineering Safety and Disaster Reduction,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]中国地质大学(北京)工程技术学院,北京100083 [2]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124

出　　处：《建筑结构学报》2018年第11期48-57,共10页Journal of Building Structures

基　　金：国家自然科学基金项目(51508009);中央高校基本科研业务费优秀教师项目(2652017078);国家科技支撑计划(2015BAL03B01)

摘　　要：为适应装配式低层住宅结构的发展,研发了装配式轻型钢管再生混凝土框架-带暗支撑单排配筋再生混凝土薄墙体组合结构（简称“装配式轻钢框架-轻墙体组合结构”）,该结构由预制轻钢框架与轻墙体共同受力,暗支撑的设置可提高墙体的抗剪性能。通过6个装配式轻钢框架-轻墙体组合结构试件的拟静力试验,分析了轻墙体分布钢筋间距、暗支撑设置对试件损伤演化过程、滞回特性、承载力、延性、刚度、残余变形率和耗能性能的影响。结果表明：装配式轻钢框架-轻墙体组合结构具有良好的协同工作性能,加载过程中,体现出两道抗震防线,即轻墙体为第一道抗震防线,轻钢框架为第二道抗震防线;结构中轻墙体为剪切破坏,轻钢框架的梁和柱为弯曲破坏,轻墙体的存在明显减缓了轻钢框架侧向位移的发展,连接梁和柱的强化型节点可靠连接。同时,轻墙体分布钢筋间距减小及设置暗支撑均可显著提高组合结构整体的延性和耗能能力,并明显延缓墙体的破坏程度。In order to adapt to the development of low-rise residential structure, a new type of fabricated composite structure of lightweight steel-pipe recycled concrete frame-single-row-reinforcement and recycled concrete thin wall with concealed support has been developed（ referred to fabricated composite structure of lightweight steel frame-lightweight wall）. The precast light frame and the light wall make an interactive system. The concealed support is set to improve the shear performance of the wall. The quasi-static tests of six specimens of fabricated lightweight steel frame-light wall composite structure were carried out. The damage development process, hysteretic behavior, bearing capacity, ductility, stiffness, residual deformation rate and energy dissipating capacity were analyzed. The results show that the fabricated structure has good coordinated performance. During the loading process, two clear seismic fortification lines are identified, where the light wall is the first line, and the light steel frame is the second one. The failure mode of the light wall is shear failure. The failure modes of beam and column of the light steel frame are bending failure. The light wall obviously mitigates the lateral displacement of light steel frame. The reinforced beam and column joints have no obvious damage, and the reliable connection between beam and column is realized. At the same time, the reduction of the spacing of steel bars and the setting of concealed support can significantly improve the ductility and energy dissipation capacity of the composite structure, and obviously delay the destruction of the wall.

关 键 词：装配式组合结构 轻型钢管再生混凝土框架 带暗支撑单排配筋再生混凝土薄墙体 拟静力试验 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程] TU317.1