连续式桥梁伸缩缝界面黏结性能研究

发布时间：2018-01-08 16:18

本文关键词：连续式桥梁伸缩缝界面黏结性能研究　出处：《重庆交通大学学报(自然科学版)》2014年01期 　论文类型：期刊论文

【摘要】：通过有限元计算,分析了连续式桥梁伸缩缝界面在交通荷载及温度收缩变形作用下的受力特征;探讨了连续式桥梁伸缩缝界面脱开原因;研究了伸缩缝材料模量、铺装厚度、宽度和界面接触条件对界面黏结性能的影响。结果表明:当温度收缩变形比较大时,界面温度拉应力比界面荷载剪应力对界面黏结状态影响大;当温度收缩变形比较小时,界面温度拉应力比界面荷载剪应力对界面黏结状态影响小;适当地增加伸缩缝材料的模量和宽度,减小铺装厚度和界面摩擦系数可以相应提高伸缩缝界面的黏结性能。
[Abstract]:Through the finite element calculation, analysis of continuous bridge expansion joint in the interface deformation of traffic load and temperature shrinkage stress characteristics under the action; discusses the continuous bridge expansion joint interface fracture reason; study the expansion joints material modulus, pavement thickness, width and contact conditions on the influence of interfacial bonding properties. The results show that when the temperature shrinkage deformation is large, the interface temperature stress ratio load interface shear stress effect on the interfacial bonding state; when the temperature shrinkage deformation is small, the interface temperature stress ratio load interface shear stress on the bonding interface state effect; appropriately increase the material modulus and expansion joint width, reducing pavement the thickness and friction coefficient can increase bonding properties of expansion joint interface.

【作者单位】：同济大学道路与交通工程教育部重点实验室;
【分类号】：U443.31
【正文快照】： 连续式桥梁伸缩缝是20世纪70年代由英国发展起来的一种新兴的桥梁伸缩缝,由沥青结合料、集料、搭接钢板和填塞料4个部分构成[1],其结构示意如图1。连续式桥梁伸缩缝兼具施工简便、成本低廉、行车舒适、使用年限长、以及可半幅施工不中断交通等诸多优点,在欧美及东南亚得到广泛

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