箱形截面单柱式桥墩抗震性能分析  

Analysis on Seismic Behavior of Single Column Pier with Box Section

作　　者：崔海琴[1,2] 

机构地区：[1]华侨大学土木工程学院,福建厦门361021 [2]福建省结构工程与防灾重点实验室,福建厦门361021

出　　处：《工程建设与设计》2017年第10期23-26,共4页Construction & Design for Engineering

基　　金：福建省自然科学基金资助项目(2013J05080);华侨大学科研基金资助项目(11BS416)

摘　　要：为了系统地分析箱形截面薄壁墩的抗震性能,对4个模型进行了拟静力试验,分析了位移测试结果,探讨了配箍率和轴压比对模型墩的耗能能力、刚度退化特性的影响。试验结果表明:模型墩的破坏形式为弯曲破坏;配箍率是影响桥墩延性抗震性能的主要因素,箍筋能延缓强度和刚度退化;随着轴压比的提高,试件的承载力有所降低,抗震性能越来越差。In order to analyze the seismic performance of box section thin-walled pier, we have do quasi static test on four models,and analyze the displacement test results, discuss the effect of reinforcement ratio, axial compression ratio＇s design parameters on the model pier dissipation capacity and stiffness degradation characteristics. The results indicate that the failure form of model piers is bending failure; stirrup ratio is the main factor affecting the seismic performance of the pier ductility, stirrups can delay the strength and stiffness degradation; with the increase of axial compression ratio, the bearing capacity of the specimen decreases, the seismic performance is getting worse.

关 键 词：桥梁工程 箱形截面 单柱式桥墩 抗震性能 轴压比 配箍率 

分 类 号：U441[建筑科学—桥梁与隧道工程]