水平地震激励下储罐液体晃动与提离分析  

Sloshing of liquid and lifting of tank under horizontal seismic ground motion

作　　者：孙建刚[1] 周利剑[2] 李晓莉[2] 李庆丽[2] 

机构地区：[1]大连民族学院土木建筑工程学院,辽宁大连116600 [2]大庆石油学院土木建筑工程学院,黑龙江大庆163318

出　　处：《地震工程与工程振动》2007年第5期134-138,共5页Earthquake Engineering and Engineering Dynamics

基　　金：黑龙江省自然科学基金项目(E0235);大连民族学院资助项目

摘　　要：在考虑地基与储罐相互作用的情况下,采用有限元法对储罐在水平地震荷载作用下的液面晃动及储罐提离反应进行了分析。结果表明:罐内液体的晃动是长周期运动,其周期受地震动影响。无论是小体积罐还是大体积罐,在一定的地震烈度下均可以发生提离,而且储罐发生提离的时刻大多数是在地震动的峰值过后的一段时间内。大体积的储罐的提离明显小于小体积的罐。底板提离区域为月牙形。Finite-element method is used to analysis the liquid sloshing and the uplifting response of tank due to horizontal seismic ground motion in the case of considering the interaction of foundation and tank. The analytic results are shown as follows the sloshing of liquid in tank is a long period motion and the period is affected by earthquake. All the tanks may lift under certain seismic intensity, and the time of uplifting is after the peak value of seismic ground motion in most cases. Compared to the small tank, the uplifting of large tank is less obviously. The shape of lifting zone is crescent moon. The annular lifting displacement changes with time.

关 键 词：储罐 水平地震 相互作用 有限元 晃动和提离 

分 类 号：P315.963[天文地球—地震学]