RC加气混凝土砌块组合墙加固框架抗震性能试验研究  

Seismic performance experimental analysis of the frame strengthened by composite walls of RC-autoclaved aerated concrete blocks

作　　者：郭猛[1] 王双娇 袁泉[2] 刘志元[3] 黄炜[3] 

机构地区：[1]中国建筑科学研究院结构所,北京100013 [2]北京交通大学土木建筑工程学院,北京100044 [3]西安建筑科技大学土木工程学院,西安710055

出　　处：《土木建筑与环境工程》2016年第4期78-85,共8页Journal of Civil,Architectural & Environment Engineering

基　　金：国家自然科学基金(51308522);中央高校基本科研业务费专项资金(2015JBM065)~~

摘　　要：RC加气混凝土砌块组合墙(简称组合墙)是由混凝土梁柱网格与加气混凝土砌块组合形成的一种轻型网格式抗震墙,可用于框架结构的抗震加固。笔者进行了1/2比例空框架试件、组合墙试件和组合墙加固框架试件的低周反复荷载试验,分析了各试件的主要破坏过程,对比了组合墙加固框架前后试件承载能力、刚度等抗震性能变化。试验结果及分析表明:组合墙加固框架后承载力、抗侧刚度有较大幅度提高,中大震及大震阶段其承载力、等效刚度约为空框架和组合墙单独受力之和的0.9倍,两者具有良好的协同工作性能;加固试件的破坏过程基本上遵循填充砌块混凝土框格外框架的破坏顺序,能够发挥组合墙多重抗震防线的特点,采用RC加气混凝土砌块组合墙加固框架是一种较为经济实用的加固方法。Composite walls of RC-autoclaved aerated concrete blocks（CWR）consisting of concrete beamcolumn grid and aerated concrete blocks was a new type of shear wall,which could be used to strengthen the seismic performance of frame structure.Cyclic reversed loading tests were conducted on frame specimen without CWR,CWR specimens and CWR with outer frame specimens.All the specimens were in the scale of 1：2.The main failure process of the specimens were analyzed.The seismic performances of the frame such as bearing capacity,stiffness and so on before and after being strengthened by CWR were studied.Test results showed that the bearing capacity and lateral stiffness of the strengthened frame structure wereincreased greatly and about 0.9times as large as the sum of outer frame structure and CWR that possessed good cooperative work performance.The damage process of the strengthened specimens basically followed the sequence of filling block,reinforced concrete frames and outer frame,and thus could bring the Multidefense seismic characteristics of the CWR into full play,which indicated that strengthening frame structure with CWR was economic and convenient.

关 键 词：框架结构 RC加气混凝土砌块组合墙 加固 抗震性能 试验 

分 类 号：TU375[建筑科学—结构工程] TU398