基于质量比和间隙比的相邻等高RC框架结构碰撞反应分析

地震作用下,相邻建筑结构由于明显的动力特性差异以及没有足够的间距,容易使结构遭受严重的碰撞破坏甚至倒塌。采用简化的Hertz-damp碰撞模型将相邻结构简化为带间隙的非弹性杆单元,以相邻3层RC框架结构为例,以Open Sees软件平台为依托研究结构在地震作用下的碰撞反应,分析两相邻结构在不同的间隙比和质量比工况下,地震碰撞对其结构特性的影响以及影响两相邻等高RC框架结构间地震碰撞的因素。研究表明:间隙比及质量比是影响相邻等高RC框架结构间碰撞效应的两大因素。

Analysis of collision response for RC frame structure of adjacent equal high based on ratios of mass and clearance

Under the action of earthquake, adjacent structure is easy to suffer from severe damage or even collapse due to obvious difference of dynamic property and lack of adequate space.The paper adopted a simplified Hertz-damp pounding model to simplify the adjacent structure into inelastic truss element with gap pounding model, took the adjacent three-store RC frame structure as a case to study the seismic action of pounding response based on OpenSees, analysis the seismic effect on the structural property and the impact factors of the pounding between two adjacent contour RC frame structures under different conditions of mass ratio and clearance ratio. Research shows that the clearance ratio and mass ratio are the two important factors of affecting the effect between two adjacent equal height RC frame structures.