无缝型桥梁拱型搭板的可行性研究  

Feasibility Study on Arch Approach Slab of Seamless Bridge

作　　者：庄一舟 陈益楠 郑国平[1] Zhuang Yizhou;Chen Yinan;Zheng Guoping(College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]浙江工业大学土木工程学院,杭州市310014

出　　处：《北方交通》2022年第2期4-7,共4页Northern Communications

摘　　要：目前多数无伸缩缝桥梁(无缝桥)设置的桥台搭板,存在台后填土沉降、搭板脱空等问题,间接导致行驶车辆桥头跳车。从结构角度出发,提出一种新型搭板形式——拱型搭板,通过模拟拱型搭板在主梁纵桥向变形下的竖向沉降情况并对路面平整度进行分析研究,结果表明该结构具有良好的吸收变形能力及路桥过渡效果,对无缝桥处理路桥过渡段提供新思路。At present,the abutment approach slabs of most bridges without expansion joints(seamless bridges)have problems such as filling settlement behind the abutment and approach slab void,which indirectly lead to vehicle bump at bridge-head.From the perspective of structure,a new form of approach slab,i.e.arch approach slab is put forward.By simulating the vertical settlement of arch approach slab under the longitudinal deformation of main beam and analyzing and studying the pavement flatness,the results show that the structure has good absorption deformability and road bridge transition effect,which can provide a new idea for seamless bridge to deal with the road bridge transition section.

关 键 词：无伸缩缝桥梁 拱型搭板 数值模拟 路面平整度 

分 类 号：U443.31[建筑科学—桥梁与隧道工程]