无缝桥梁接线路面受力特征与破坏形式分析  

Analysis of Stress Characteristics and Failure Modes of Seamless Bridge Connection Pavement

作　　者：陆元春 傅梅 丛林[2] 李学良 丁鹤洋 LU Yuanchun;FU Mei;CONG Lin;LI Xueliang;DING Heyang

机构地区：[1]上海市城市建设设计研究总院(集团)有限公司,上海200125 [2]同济大学道路与交通工程教育部重点实验室,上海201804

出　　处：《上海公路》2024年第4期105-114,138,M0006,共12页Shanghai Highways

摘　　要：(半)整体式全无缝桥梁完全取消伸缩装置,能有效避免桥头跳车现象的出现。在(半)整体式全无缝桥梁体系中,主梁、搭板和接线路面三者连接成一个整体。在温度荷载的作用下,梁体发生变形,变形通过搭板传递到接线路面,会造成接线路面开裂,影响路面使用寿命[1]。现通过现状调研和有限元模拟,研究接线路面内沥青层的应力分布,并提出相应的工程措施,避免开裂的出现。The(semi) integral fully seamless bridge completely eliminates the expansion device,which can effectively avoid the occurrence of vehicle jumping at the bridgehead.In a(semi) integral fully seamless bridge system,the main beam,transition plate,and connecting pavement are unified into a single structure.Under the thermal loads,the beam undergoes deformation,which is transmitted to the connecting road surface through the transition plate,causing cracks in the connecting road surface and affecting its service life[1].Through current situation research and finite element simulation,the stress distribution of the asphalt layer in the connected road surface is studied,and corresponding engineering measures are proposed to avoid cracking.

关 键 词：整体式全无缝桥梁 (半)整体式 接线路面 现状调研 有限元仿真 桥头搭板 沥青层应力分布 工程措施 

分 类 号：U416.2[交通运输工程—道路与铁道工程] U443.31[建筑科学—桥梁与隧道工程]