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设置填充墙的框架结构试验研究与模拟分析*
史铁花,程绍革,王瑾,孙魁,黄颖,吴礼华,王萌资
摘 要

(中国建筑科学研究院, 北京 100013)

[摘要]通过一幢20世纪70年代末建于8度地震设防区的砌体填充墙框架结构的模拟地震振动台试验,得到其破坏形态与过程,并与有限元分析进行对比。利用获得的较准确的有限元模型,进一步分析纯框架结构、设有砌体填充墙框架结构、设有钢筋混凝土填充墙框架结构在不同地震作用下的位移、层间位移角、层剪力等参数。结果表明:均匀填充少量砌体墙后,结构动力响应与纯框架结构较为接近,可在计算中忽略砌体墙的影响;填充少量钢筋混凝土墙后,结构自振周期明显缩短,结构位移响应减小,钢筋混凝土填充墙的影响不可忽略;合理增设钢筋混凝土填充墙是框架结构抗震加固有效方法之一。

[关键词]框架结构; 砌体填充墙; 钢筋混凝土填充墙; 振动台试验

中图分类号:TU375-4文献标识码:A文章编号:1002-848X(2017)24-0042-07

 

Experimental and numerical research of RC frame with infilled walls

Shi Tiehua, Cheng Shaoge, Wang Jin, Sun Kui, Huang Ying, Wu Lihua, Wang Mengzi

(China Academy of Building Research, Beijing 100013,China)

Abstract:A RC frame with masonry filler walls partly built in the late 1970s (seismic fortification of 8 degree) was taken as the prototype, a series of simulated earthquake shaking table tests were conducted, the failure mode and process of the tested frame were obtained, and the experimental results were analyzed and compared with the numerical ones. Further, the performance of the pure frame structure, frame structure with masonry filler walls and frame structure with reinforced concrete filler walls under different seismic excitations were analyzed based on the accurate finite element model of the structure, and some conclusion were drawn by comparing the response of the structures such as displacment,story drift angle and story shear force and so on. The results show that the dynamic response of the frame with fewer masonry filler walls is similar to the response of the pure frame, the influence of masonry filler wall can be ignored in the caculation; while the effect of the reinforced concrete filler walls cannot be ignored for the reason that the natural vibration period of the frame with reinforced concrete filler walls becomes shorter and the displacement response decreases obviously compared with the pure frame; adding reinforced concrete filler walls is one of the effective seismic strengthening methods.

Keywords:frame structure; masonry filler wall; reinforced concrete filler wall; shaking table test

 

*国家重点研发计划项目(2016YFC0700700)。

 

作者简介:史铁花,硕士生导师,研究员,一级注册结构工程师,Email:shitiehuacabr@126.com。

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