市政桥梁伸缩缝处积水病害防治研究应用

Research and Application of the Prevention and Control of Water Accumulation Diseases at the Expansion Joints of Municipal Bridges

摘要:

详细分析了因桥梁伸缩缝处沥青路面层内部积水引起的病害现象和形成机理，从设计、施工和运营管养3个阶段，系统性地提出该病害的防治方案，并将该方案应用于广西南宁市某市政桥梁工程。工程应用结果表明，该方案可有效排除桥梁伸缩缝处沥青路面层内的积水，大幅延长桥梁沥青路面层的使用寿命，减少后期维修、养护的费用，具有显著的经济效益。

Abstract:

This paper analyzes in detail the disease phenomenon and formation mechanism caused by water accumulation in the asphalt pavement layer at the expansion joint of the bridge, and systematically proposes a prevention and control plan for the disease from the three aspects of design, construction and operation and maintenance, and applies the plan to a municipal bridge project in Nanning, Guangxi. The engineering application results show that the plan can effectively remove the water accumulation in the asphalt pavement layer at the expansion joint of the bridge, greatly extend the service life of the asphalt pavement layer of the bridge, reduce the cost of later maintenance, and has significant economic benefits.