建筑结构学报2017，Vol.38Issue(8)：35-44,10.DOI:10.14006/j.jzjgxb.2017.08.004
隔震橡胶支座楼梯间模型结构振动台试验研究
Shaking table test of RC frame-staircase model with seismic isolation rubber supports
摘要
Abstract
In order to verify the influence of seismic isolation rubber supports and polytetrafluoroethane plate sliding supports at the lower part of the stairway slabs on the seismic performance of cast-in-place reinforced concrete (RC)slab-stairs,the shaking table test of a 1/3 scaled RC staircase frame unit model structure was conducted to observe the failure process,and to analyze the natural vibration frequency variation,acceleration response,displacement response and failure mechanism by inputting motions of different intensities.Experimental results indicate that staircase unit with seismic isolation rubber supports at the lower part of the stairway slabs has excellent seismic performance and the failure is concentrated at main structure under rare earthquake input,which releases bracing effect of the stairway slabs effectively and realizes that substructure fails seriously later than main structure.When ploytetrafluoroethene plate sliding support is used at the lower part of the stairway slabs,severe vertical deformation and horizontal sway occur in the resonance destruction test.However,when seismic isolation rubber support is used at the lower part of the stairway slabs,vertical acceleration of staircase slabs is decreased,no sway occurs in the resonance destruction test.关键词
楼梯/隔震橡胶支座/滑动支座/振动台试验/抗震性能Key words
staircase/seismic isolation rubber support/sliding support/shaking table test/seismic behavior分类
建筑与水利引用本文复制引用
辛力,曾凡生,梁兴文,常亚峰,汪平..隔震橡胶支座楼梯间模型结构振动台试验研究[J].建筑结构学报,2017,38(8):35-44,10.基金项目
中国建筑股份有限公司科技研发课题(CSCEC-2015-Z-41),国家自然科学基金项目(51278402). （CSCEC-2015-Z-41）
