核筒——三个悬挂体结构地震动力反应分析  

Suspension Structure Seismic Dynamic Response Analysis Nuclear Tube-three

作　　者：王芳[1] 李凤鑫[1] 葛楠[1] 

机构地区：[1]河北联合大学河北省地震工程研究中心,河北唐山063009

出　　处：《河北联合大学学报（自然科学版）》2014年第3期114-120,共7页Journal of Hebei Polytechnic University:Social Science Edition

基　　金：河北省科技支撑项目(11215120D)

摘　　要：用拉格朗日方程建立核筒悬挂结构的运动方程,并且考虑了大位移非线性的影响。运用Longe-Kuta方法求出体系的地震动力响应时程。由计算结果得出核筒悬挂结构可以大大的减小层间位移、楼层位移、楼层速度和楼层加速度,减震效率达90%。核筒截面抗弯刚度对截面内力和筒身水平位移影响非常大,截面内力随着抗弯刚度的增大而增大。阻尼系数和吊杆长度对截面内力的影响非常小。楼层位移、楼层速度和楼层加速度随阻尼系数的减小而减小。Exact motion equation was established for nuclear tube suspended structur from Lagrange Equation,with non-linearity from large displacement being included. The equation was solved with Longe-Kuta method. It is shown that earthquake dynamic response for inter-storey drift and floor displacement,velocity and acceleration could be de-creased significantly,with efficiency of seismic mitigation being approximately 90% . Flexural rigidity exerts domi-nant influence on its section forces and translational deflection,which increase with the rigidity. While the length of suspender and damp coefficient of storey dampers exerts little influence on them. The storey drift,velocity and accel-eration exhibit monotonous decrease with damp coefficient.

关 键 词：核筒—— 三个悬挂体结构 LAGRANGE 方程 龙格 - 库塔方法 地震反应分析 

分 类 号：TU375.4[建筑科学—结构工程]