伸缩缝锚固区受力性能分析  

Analysis on the Mechanical Properties of the Anchorage Zone of the Expansion Joint

作　　者：屈宁博 常兴科 雷述涵 韩伟 Qu Ningbo;Chang Xingke;Lei Shuhan;Han Wei(School of highway,Chang'an university,Xi’an 710064,China;Shanxi Expressway Group Co.,Ltd.,Taiyuan 030000,China)

机构地区：[1]长安大学公路学院,西安市710064 [2]山西省高速公路集团有限责任公司,太原市030000

出　　处：《北方交通》2024年第9期1-4,共4页Northern Communications

基　　金：山西交通控股集团有限公司基金项目(编号2022-JKKJ-16)。

摘　　要：在车辆荷载的反复作用下,桥梁伸缩缝锚固区钢筋、混凝土及型钢极易出现损伤,进而缩减使用寿命。文章通过Abaqus有限元软件建立伸缩缝整体式模型,通过不同车速下的竖向荷载值确定关键控制指标,并分析锚固区截面构造设计、锚固钢筋数量及深度、锚固区混凝土强度、型钢梁的布置等构造因素对构件应力的影响。分析结果可为后续伸缩装置的安装提供借鉴参考。Under the repeated action of vehicle load,the reinforcing bars,concrete and section steel in the anchorage zone of bridge expansion joints are easily damaged,thereby reducing the service life.The integral model of the expansion joint is established by using ABAQUS finite element software,the key control indexes are determined by the vertical load values at different vehicle speeds,and the influence of structural factors such as the cross-section structural design of the anchorage zone,the number and depth of anchor bars,the concrete strength of the anchorage zone,and the arrangement of section steel beams and etc.on the component stress are analyzed.The analysis results can provide reference for the subsequent installation of the retractor device.

关 键 词：桥梁伸缩缝 锚固区 有限元模型 应力分析 

分 类 号：U441[建筑科学—桥梁与隧道工程]