整体式桥台与组合梁结合部受力机理分析  

Stress Mechanism Analysis of the Joint Between Integral Abutment and Composite Beam

作　　者：范慧敏 郑双杰 李海锋[1,2] 陈明杰 舒鹏 FAN Huimin;ZHENG Shuangjie;LI Haifeng;CHEN Mingjie;SHU Peng(College of Civil Engineering,Huaqiao University,Xiamen 361021,China;Key Lab for Intelligent Infrastructure and Monitoring of Fujian Province,Huaqiao University,Xiamen 361021,China)

机构地区：[1]华侨大学土木工程学院,福建厦门361021 [2]华侨大学福建省智慧基础设施与监测重点实验室,福建厦门361021

出　　处：《建筑钢结构进展》2023年第7期85-94,共10页Progress in Steel Building Structures

基　　金：国家自然科学基金青年项目(51808235);福建省自然科学基金青年创新项目(2018J05083);中央高校基本科研业务费(ZQN-813)。

摘　　要：为提高整体式桥的梁台结合部抗裂性能与施工便利性,提出一种新型整体式桥台与组合梁结合部构造。采用ABAQUS通用分析软件,考虑钢混界面摩擦滑移效应,建立整体式桥台与组合梁结合部的三维有限元模型。通过仿真计算得到整体式桥台与组合梁结合部的破坏形态与荷载-挠度曲线,分析其极限承载力与传力机理,并与模型试验结果进行对照验证。进一步通过参数化计算分析,得到混凝土强度、钢材强度、钢板厚度与腹板形式对梁台结合部承载性能的影响。研究结果可为整体式桥梁及类似结构的研究提供参考。InI order to improve the crack resistance and construction convenience of integral bridge,a new joint between integral abutment and composite beam was proposed.The ABAQUS software was used to build a 3D finite element model of the joint between integral abutment and composite beam,considering the friction and slip effect in steel-concrete interface.The failure modes and load-deflection curves of the joint between abutment and composite beam were obtained through the numerical simulation,and the ultimate bearing capacity and force transmission mechanism were analyzed and verified by comparing with test results.Furthermore,the influences of concrete strength,steel strength,steel plate thickness and web type on the bearing performance of beamabutment joint were obtained through parametric analysis.The results can provide a reference for the research of integralbridges and similarstructures.

关 键 词：整体式桥梁 桥台-钢梁结合部 抗剪连接件 有限元分析 受力机理 

分 类 号：U442[建筑科学—桥梁与隧道工程]