钢筋混凝土桥墩剪切破坏滞回性能模拟研究  

Simulation Research on the Hysteretic Behavior of Shear Failure of Reinforced Concrete Bridge Pier

作　　者：赵翔宇 杨晨辉 Zhao Xiangyu;Yang Chenhui(Xinjiang Transportation Planning Survey&Design Academe Co.,Ltd.,Urumqi 830000,China)

机构地区：[1]新疆交通规划勘察设计研究院有限公司,乌鲁木齐市830000

出　　处：《北方交通》2024年第5期9-13,共5页Northern Communications

摘　　要：文章以具有明显剪切及弯剪破坏特征的墩柱试件为研究案例,建立3种剪切模型对应的试件模型,通过循环往复加载,对比分析了各试件在3种模型模拟下的滞回特性。研究结果表明:Elwood模型虽然基于大量的悬臂墩试验建立,但在模拟双柱墩上仍有待改进;LeBorgne模型在模拟双柱式桥墩时较合理;改进的IMK模型参数定义较为灵活,但参数设置主观性较强,且由于采用弹性梁单元模拟,不能合理地反映塑性沿墩柱长度方向的发展情况。Taking the pier stud specimen with obvious shear and bending shear failure characteristics as the research case,the specimen models corresponding to three kinds of shear models are established,and the hysteretic characteristics of each specimen under the simulation of the three kinds of models are compared and analyzed through the cyclic loading.The research results show that:although the Elwood model is based on a large number of cantilever pier tests,it still needs to be improved in the simulation of double-column piers.The LeBorgne model is reasonable in the simulation of double-column piers.The parameter definition of the improved IMK model is more flexible,but the parameter setting is more subjective,and due to the elastic beam element simulation,it cannot reasonably reflect the development of plasticity along the direction of the pier stud length.

关 键 词：钢筋混凝土桥墩 剪切破坏模拟 循环往复加载 桥梁抗震 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]