摘要
高阻尼叠层橡胶支座是一种常用的减隔震支座,在实际地震作用下,其良好的抗震效果对于减小地震破坏作用、保障公路桥梁等生命线工程的安全尤为重要。对高阻尼橡胶支座施加正弦激励波,进行了压剪性能试验,研究支座剪切性能变化规律,并分析剪切应变和竖向压应力对支座性能的影响。同时,基于高阻尼橡胶支座滞回特性,提出了一种改进后的双弹簧模型,模型采用试验得到的经验公式,通过支座性能试验,对比验证了改进后恢复力模型滞回特性的准确性。
The high damping rubber bearing is a commonly used seismic isolation bearing.Under actual seismic action,its good seismic performance is especially important for reducing the seismic damage and ensuring the safety of lifeline engineerings such as roads and bridges.The sinusoidal excitation wave is applied to the high damping rubber bearing to test the compression shear performance,the variation law of the shear performance of the bearing is studied,and the influence of shear strain and vertical compressive stress on the bearing performance is analyzed.In the mean time,based on the hysteretic behavior of high damping rubber bearing,an improved double spring model is proposed.The model adopts the empirical formula obtained by experiment,and through the bearing performance test,the accuracy of the hysteresis characteristics of the improved restoring force model is verified by comparison.
作者
董婉婉
丁永刚
孙浩
Dong Wanwan;Ding Yonggang;Sun Hao(School of Civil Engineering,Luoyang Institute of Science and Technology,Luoyang 471000,Henan;School of Civil Engineering and Architecture,Henan University of Technology,Zhengzhou 450001,Henan)
出处
《工程建设》
2020年第8期6-11,17,共7页
Engineering Construction
基金
河南省科技攻关项目(152102210269)
洛阳理工学院2017年青年基金项目(2017QZ06)。
关键词
高阻尼橡胶支座
压剪性能
剪切应变
竖向压应力
恢复力模型
high damping rubber bearing
compression shear performance
shear strain
vertical compressive stress
restoring force model
