浮放设备地震滑移反应数值模拟研究  

Numerical study on seismic sliding response of free-standing equipments

作　　者：郭恩栋[1] 吴伟[1] 胡煜文[1] 杨克勇 

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080 [2]哈尔滨市市政建设综合开发公司,黑龙江哈尔滨150076

出　　处：《地震工程与工程振动》2007年第6期124-129,共6页Earthquake Engineering and Engineering Dynamics

基　　金：地震科学联合基金课题(106055)

摘　　要：以前人研究建立的浮放设备滑移反应分析理论为基础,给出了浮放设备在水平和竖向地震输入下滑移反应运动微分方程,选取连续型的库仑摩擦力模型,采用Runge-Kutta法求解浮放设备地震滑移反应运动微分方程,可以得到浮放设备在地震作用下的绝对加速度、相对速度和相对位移反应时程。采用编制的计算程序,进行了浮放设备地震滑移反应参数影响研究,结果表明:浮放设备水平滑移反应随着水平地震地面输入或楼层反应输入的增大而增大,随着设备与支撑面之间摩擦系数的增大而减小;当水平向输入加速度峰值大于0.3g时,需要考虑竖向激励的影响。Based on the sliding response theory of the free-standing equipment, the differential equation of motion of the free-standing equipment under seismic excitations is presented. The equation is solved by Runge-Kutta algorithm, therefore the absolute acceleration, relative velocity and relative displacement of the equipment can be obtained. The sequential coulomb friction model is applied to the analysis. The sliding response characteristics of the free-standing equipment are investigated by using the developed software. Calculating results showed that the higher the seismic input is, the bigger the sliding response will be, and the bigger the friction factor is, the lower the sliding response will become. The vertical seismic input should be considered when the horizontal peak base acceleration input is greater than 0.3g.

关 键 词：浮放设备 地震滑移反应 数值模拟 

分 类 号：P315.96[天文地球—地震学]