BFG增强蒸压加气混凝土砌块填充墙框架抗震性能试验研究  

Experimental study on seismic performance of BFG autoclaved aerated concrete block infilled frame

作　　者：熊立红[1] 罗明康 陈国武 阳超[1] XIONG Lihong;LUO Mingkang;CHEN Guowu;YANG Chao(Institute of Engineering Mechanics, China Earthquake Administration,Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration, Harbin 150080, China)

机构地区：[1]中国地震局工程力学研究所,中国地震局地震工程与工程振动重点实验室,黑龙江哈尔滨150080

出　　处：《地震工程与工程振动》2018年第3期134-141,共8页Earthquake Engineering and Engineering Dynamics

基　　金：中国地震局工程力学研究所基本科研业务费专项(2016A05,2016A06);国家科技支撑计划项目(2015BAK17B02).

摘　　要：大量震害表明,在强震作用下传统填充墙框架结构的填充墙与框架之间相互作用非常复杂,破坏严重。为改善填充墙框架结构的抗震性能,本文采用适应我国墙材革新所倡导的蒸压加气混凝土砌块作为墙体材料,利用玄武岩纤维格栅(BFG)替代钢筋作为填充墙墙体内的拉结材料,设计了两种不同的填充墙与框架的柔性连接方式,对填充墙框架进行了拟静力试验研究。分析了其破坏特征、滞回曲线特性、骨架曲线、墙体延性、强度衰减、刚度退化以及累积耗能。结果表明,在水平荷载作用下,采用柔性连接方式的填充墙对框架承载能力影响不大,不会因框架在平面内发生较大位移而导致墙体严重破坏,且采用本文提出的平板连接方式的填充墙对框架抗侧刚度几乎没有影响,其破坏模式更为合理;同时,墙体内配置的玄武岩纤维格栅延缓了墙体的开裂,对墙体变形构成有效约束。Many earthquake disasters show that the interaction of infill wall and frame in the traditional infilled frame construction is very complex and causes severe damage under strong earthquake. In order to improve the seismic performance of infilled frame structure,this article uses autoclaved aerated concrete block as wall materials to suit the renovation of wall materials in China,meanwhile uses basalt fiber grid to replace steel tie bar in infill walls. And the authors not only come up with two flexible connection ways of infilled frame but also make quasistatic test research to infilled frame. This paper analyzes the failure characteristics,hysteretic curve behavior,skeleton curve,wall displacement ductility,strength degradation,stiffness degradation and all energy dissipation capacity. The experiment results show that,by introducing flexible connections between the frame and infill wall,the infill wall has limited influence on the capacity of the frame under horizontal loads. The infill walls are not seriously damaged due to the large displacement of the frame in plane,and infilled frame with tablet connection that this article used has almost no effect in resisting lateral stiffness. Also,the failure mode of infill wall is more reasonable.What’s more,the basalt fiber grid can delay the cracking of the infill wall,and form an effective constraint to thewall deformation.

关 键 词：玄武岩纤维格栅(BFG) 蒸压加气混凝土砌块 填充墙框架 柔性连接 拟静力试验 

分 类 号：TU352.1[建筑科学—结构工程] TU364