简易消能减震砌体结构模型振动台试验  

Shaking table experiments on a simple energy dissipation masonry structure

作　　者：李英民[1,2] 卜长明[1,3] 刘凯[1] 周华艳[1] 祝飞水[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045 [3]重庆科技学院建筑工程学院,重庆401331

出　　处：《重庆大学学报（自然科学版）》2013年第6期46-52,共7页Journal of Chongqing University

基　　金：重庆市建设科技计划资助项目(城科字2010第104号);国家科技支撑计划资助项目(2009BAJ28B01-2);重庆市科委资助项目(CSTC;2013JCYJA1304)

摘　　要：针对村镇量大面广的砌体结构,提出了一种简易消能减震技术,并对该技术进行了1∶4模型振动台试验,结果表明:该技术可使结构在小震作用下,不发生需要修复的破坏,能保证房屋正常使用功能要求;输入台面峰值加速度0.225g,相当于原型房屋的地面峰值加速度0.15g(7.5度中震),消能减震部位发挥作用,有效减轻砌体结构在大震下的损伤;当输入台面峰值加速度0.6g,相当于原型房屋的地面峰值加速度0.4g(8度大震),消能减震部位破坏严重,但结构仍未倒塌。In view of the widely used masonry structure in village buildings,we propose a simply constructed energy dissipation technology in a feasible way,which is experimented with a model at the ratio of 1 to 4 on the shaking table.Through an analysis of the process and results of the experiment,it is found that this technology can protect the building from damage in need of repair and assure the building＇s basic functions in a minor seismic scale.When the input mesa peak acceleration is 0.465g,equal to PGA of 0.31g（7.5 degree）of the original building,the energy dissipation system begins to take effects and effectively reduces the damage of the masonry structures from a bigger seismic scale.When the input mesa peak acceleration is increased to 0.6g,equal to PGA of 0.4g（8 degree）,the energy dissipation system is severely damaged,but the masonry structure doesn＇t collapse.

关 键 词：简易 消能减震 砌体结构 抗震性能 动力特性 

分 类 号：TU352[建筑科学—结构工程]