Optimal Stiffness and Location of Rubber Damping Bearing Applied to Two Story and Two Span Subway Station Structure
In this paper,an actual two-story,two-span subway station structure is used as the research object,and the Pushover analys-is method for underground structures is employed to compare and analyze the seismic damage response characteristics of subway sta-tion structures under different stiffness and locations of rubber bearings.This work aims to determine the optimal stiffness and place-ment of rubber damping bearings in subway station structures.The research findings are as follows:(1)When the rubber bearing is in-stalled at one end of the column,there is a significant damping effect on the shear at the top and bottom of the column,while the bend-ing moment shows a good damping effect only at the end of the bearing.(2)For the subway station structure,the optimal stiffness ratio of rubber bearings placed at the ends of columns is approximately 0.1.(3)In a two-story,two-span station structure,when the bearing is located on the side of the middle plate,the damage to the middle column without the bearing layer increases.(4)When a bearing is in-stalled on the middle column of each layer of the structure,the damage to the column is slightly lower compared to other configurations when the bearing is placed at the top of the upper column and the bottom of the lower column simultaneously.(5)When three bearings are arranged in the two-story,two-span station structure,all the central columns exhibit a good overall damping effect.The damping ef-fect is more pronounced when the bearings are placed completely at the top and bottom of the central column.
Subway station structureRubber damping bearingColumnsOptimal stiffnessOptimal placement position
万方数据
维普
