带消能连梁的矩形空心双柱式高墩抗震性能试验研究  

EXPERIMENTAL INVESTIGATION ON SEISMIC PERFORMANCE OF RECTANGULAR-HOLLOW DOUBLE-COLUMN TALL PIERS WITH ENERGY DISSIPATION BEAMS

作　　者：王源 王天琦 孙利民[2] 谢文[1] WANG Yuan;WANG Tian-qi;SUN Li-min;XIE Wen(School of Civil and Environmental Engineering,Ningbo University,Ningbo 315211,China;State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]宁波大学土木与环境工程学院,宁波315211 [2]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《工程力学》2020年第7期159-167,共9页Engineering Mechanics

基　　金：国家自然科学基金项目(51608282,91315301-05);浙江省自然科学基金项目(LY20E080010)。

摘　　要：基于震后功能可恢复的设计理念,按1/20几何缩尺比设计和制作了矩形空心双柱式高墩和带消能连梁的矩形空心双柱式高墩模型,开展了低周往复荷载作用下的拟静力试验研究,分析了试件的破坏形态及过程,比较研究了试件的强度、累积滞回耗能、墩柱曲率和位移延性等抗震性能参数。试验结果表明:与普通的矩形空心双柱式高墩相比,带消能连梁的矩形空心双柱式高墩具有更好的耗能能力、承载能力和位移延性能力,消能连梁可有效减小墩柱曲率,从而有效降低了墩柱的地震损伤。因此,带消能连梁的矩形空心双柱式高墩具有更优良的抗震性能。Based on the seismic resilience design concept,a rectangular-hollow double-column tall pier specimen and a rectangular hollow-double-column tall pier specimen with energy dissipation beams were designed and fabricated with the scale of 1/20.The pseudo-static tests were conducted on both specimens under low cycle loads.The failure patterns and process were discussed.The seismic behaviors of specimens,such as strength,cumulative hysteretic energy,curvature and displacement ductility,were compared.The experimental results show that compared with the rectangular-hollow double-column tall pier,the rectangular-hollow double-column tall pier with energy dissipation beams has better energy dissipation capacity,bearing capacity and displacement ductility capacity.Moreover,the energy dissipation beams can significantly mitigate the curvature of column so that the column can be effectively protected from the seismic damage.Consequently,the rectangular-hollow double-column tall pier with energy dissipation beams has a better seismic performance than the rectangularhollow double-column tall pier.

关 键 词：震后功能可恢复 消能连梁 耗能能力 位移延性 曲率 拟静力试验 

分 类 号：U448.34[建筑科学—桥梁与隧道工程]