基于分灾模式的框架结构抗震加固设计方法  

Design for Frame Structures Seismic Retrofitting Based on Damage-reduction Mode

作　　者：苏原[1,2] 吴晟[1,2] 赵崇丰 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074 [2]华中科技大学控制结构湖北省重点实验室,湖北武汉430074 [3]中冶南方(武汉)设计咨询有限公司,湖北武汉430077

出　　处：《土木工程与管理学报》2011年第3期40-45,共6页Journal of Civil Engineering and Management

摘　　要：为探讨基于分灾模式抗震加固思想的可行性,本文在一个5层3跨的混凝土框架结构两端分别添加附加框架和分灾框架后,对结构进行pushover分析,以研究加固前后结构的抗震性能。分析结果表明:当采用与原结构有良好匹配关系的分灾框架时,可以将原结构的抗震能力由7度提高到8度,分灾框架可以先于原结构破坏,体现了基于分灾模式抗震加固的思想;同时说明了分灾框架应具有合理的结构形式,以保证其有足够的结构延性。本文的结论,可以为基于分灾模式抗震加固方法的深入研究提供参考。In order to discuss the feasibility of seismic retro fi tting based on damage-reduction mode,this paper analyses a five-story frame s tructure with three crosses which adds damage-reduction frame in each side,by using pushover analysis to compare the seismic performance.The studies show tha t a reasonable damage-reduction frame which mate the original structure will im prove the seismic capability of original structure from seven degree to eight de gree,damage-reduction frame will damage fast than original structure which sho ws the theme of seismic retrofitting based on damage-reduction mode,and explai ns that the damage-reduction frame should have reasonable form which ensures st ringiness of the structure.The conclusion gives reference to the intensive study of seismic retrofitting based on damage-reduction mode.

关 键 词：分灾模式 抗震加固 框架结构 

分 类 号：TU375.4[建筑科学—结构工程]