碟簧装置恢复力模型及其在自复位RC剪力墙中的应用  

RESTORING FORCE MODEL OF DISC SPRING DEVICES AND ITS APPLICATION IN SELF-CENTERING RC SHEAR WALL

作　　者：陈曦[1] 徐龙河[1] 肖水晶[1] CHEN Xi;XU Long-he;XIAO Shui-jing(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044

出　　处：《工程力学》2021年第9期100-109,共10页Engineering Mechanics

基　　金：国家自然科学基金项目(52078036)。

摘　　要：为了准确模拟碟簧装置和自复位RC剪力墙的力学性能,对碟簧装置的工作原理和力学特性进行了分析,提出并开发了碟簧装置恢复力模型,通过试验验证了恢复力模型的准确性。在低周往复荷载作用下,对内置碟簧装置的自复位RC剪力墙的滞回性能进行数值模拟,并与试验结果进行了对比。结果表明:应用碟簧装置恢复力模型的数值模型可有效模拟自复位RC剪力墙的滞回特性、自复位性能及耗能能力。自复位RC剪力墙的承载力随碟簧预压力、附加摩擦力及碟簧装置刚度的增大而增大;耗能能力随附加摩擦力的增大而增大;残余位移随附加摩擦力的增大而增大,随碟簧预压力和碟簧装置刚度的增大而减小。The working principle and mechanics behavior of disc spring device are analyzed to accurately simulate the mechanics performance of disc spring device and the self-centering RC shear wall.Furthermore,the restoring force model of disc spring device is proposed and developed.The accuracy of the restoring force model is verified through experiments.The hysteretic performance of the self-centering RC shear wall with disc spring device is numerically simulated and compared with the experimental results due to cyclic reversed loading.Results indicate that the numerical model using a restoring force model of disc spring device can effectively simulate the hysteretic behavior,self-centering performance and energy dissipation capability of the self-centering RC shear wall.The bearing capacity of the self-centering RC shear wall increases with the increase of the pre-pressed force of disc springs,the additional friction force and the stiffness of disc spring device.The energy dissipation capacity increases with the increase of the additional friction force.The residual displacement increases with the increase of additional friction and decreases with the increase of the pre-pressed force of disc springs and the stiffness of disc spring device.

关 键 词：自复位RC剪力墙 碟簧装置 恢复力模型 滞回性能 试验验证 

分 类 号：TU352[建筑科学—结构工程]