摘要
在自复位结构中设置耗能器能够耗散地震能量、减轻结构构件的损伤,地震后更换耗能器即可快速恢复结构的抗震性能。文中提出一种采用高强螺栓装配到梁柱节点中的屈曲约束折形叠合耗能器,便于施工连接和震后更换。耗能器将节点的耗能集中在耗能芯板,通过附加约束装置防止芯板屈曲,同时耗能器能够作为梁翼缘的加强板以及节点的抗剪连接装置。对该耗能板进行轴向拉压试验,考察了其耗能能力、刚度、承载力和连接强度等,采用有限元软件ABAQUS进行模拟对比分析,结果表明,在保证连接装置强度的前提下,屈曲约束折形叠合耗能板具有较好的耗能能力和较高的刚度、承载力,能够作为装配到梁柱节点中的耗能装置。
Applying the seismic energy dissipating damper in the self-centering structure can reduce the damage of the beam and column caused by the earthquake.The structure can be quickly restored by replacing the damaged dampers.We propose a new buckling restrained L-shape superimposed steel damper connecting with high-strength bolts which can dissipate the most seismic energy through the steel plate.The proposed damper can avoid the buckling of the steel plate through the additional restraining devices,and easily be replaced after earthquake.The flange of the beam end can be reinforced by the new damper,which also can be regarded as a shear transfer device.The consequences of the axial tension and compression test and ABAQUS simulation indicate that the proposed buckling restrained L-shape superimposed steel damper has essential capabilities of energy dissipation and good bearing and stiffness with the sufficient connecting strength.
作者
杨熠明
杨溥
舒媛
李英民
冯力强
张孝斌
YANG Yiming;YANG Pu;SHU Yuan;LI Yingmin;FENG Liqiang;ZHANG Xiaobin(School of Civil Engineering,Chongqing University,Chongqing 400045,P.R.China;Gansu Construction Investment(Holdings)Group Co.,Ltd.,Lanzhou 730050,P.R.China)
出处
《重庆大学学报》
CSCD
北大核心
2021年第7期129-138,共10页
Journal of Chongqing University
基金
重庆市自然科学基金资助项目(cstc2018jcyjAX0061)
国家自然科学基金资助项目(51578093)
住房和城乡建设部研究开发项目(2018-K9-072)。
关键词
屈曲约束
耗能板
阻尼器
抗震性能
震后修复
buckling restrained
energy dissipating steel plate
damper
seismic behavior
restore after earthquake