摘要
增设抗震墙或钢支撑是框架结构加固中比较有效的加固方法,不但能有效减轻原有框架结构受到的侧向力,而且可以显著减小结构变形,保证结构的安全。但我国相关标准中规定增设抗震墙必须设基础并连续伸至所需增加部位,施工复杂且造价较高。通过1/5缩尺多层框架局部填充抗震墙和带框钢支撑加固模型的振动台试验研究,对模型的破坏现象、动力特性以及动力反应结果等进行了分析。试验结果表明:采用局部填充适当刚度的抗震墙和带框钢支撑加固框架结构后,相应楼层的水平抗震承载能力得到明显提高,从而论证了框架结构通过该方法加固是可行合理的。
Seismic strengthening of frame structures using infill seismic walls or steel braces,which is an effective method,can reduce the lateral force of original frame structure effectively and significantly reduce structure deformation to ensure the structure safety. However,it demands that seismic walls should set foundations and the walls should continuously stretch from the foundation to the required position according to relevant China standards,which makes construction complicate and expensive. The shaking table test of a multistory frame structure strengthening by local infill seismic walls and steel braced frame was carried out with scale ratio of 1 /5. The model failure phenomenon,dynamic characteristics and dynamic response results were analyzed. Results show that horizontal seismic bearing capacities of relevant layers are improved apparently by using above seismic strengthening method of local infill appropriate stiffness of seismic walls and steel braced frame,so the strengthening method is effective and reasonable.
出处
《建筑结构》
CSCD
北大核心
2015年第14期1-7,86,共8页
Building Structure
基金
科技支疆项目(201291112)
关键词
框架结构
抗震加固
填充抗震墙
带框钢支撑
振动台试验
frame structure
seismic strengthening
infill seismic wall
steel braced frame
shaking table test
