土工袋基础减振隔震试验  

Experimental study on vibration reduction and isolation of bases with soilbags

作　　者：刘斯宏[1] 王艳巧[2] 金远征[1] 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《水利水电科技进展》2012年第1期87-90,共4页Advances in Science and Technology of Water Resources

基　　金：高等学校博士学科点专项(2010515911);江苏高校优势学科建设工程项目(YS11001)

摘　　要：为减小突发性地震对建筑物的危害,通常在建筑物基础中设减振隔震装置。提出土工袋基础减振隔震新方法,进行土工袋水平剪切循环试验,从水平刚度及等效阻尼比2个方面说明土工袋满足一般基础隔振体系需具有可变水平刚度的要求。在小型电动振动台上进行了土工袋和袋内填充物(天然河砂)的水平减振对比试验,试验结果表明,土工袋的减振效果优于天然河砂的减振效果,且振动加速度越大,减振效果越好。To minimize the seismic risk to structures,vibration reduction and isolation devices have been commonly employed in their bases.An economic and practical method for the vibration reduction and isolation of the bases is put forward by means of soilbags.Cyclic simple shear tests on the soilbags are carried out.The soilbags which satisfy the requirements of the general base isolation system with variable horizontal stiffness are illustrated from the two aspects of the horizontal stiffness and the equivalent damping ratio.Comparative tests on the horizontal vibration reduction of the soilbags and their fillings are performed by use of a small-scale shaking table,and the horizontal damping effects of the soilbags are validated.

关 键 词：土工袋 基础隔震 循环剪切试验 振动台试验 

分 类 号：TU352.12[建筑科学—结构工程]