高速公路桥梁伸缩缝病害原因及维修更换工艺分析

Analysis on Causes of Expansion Joints of Expressway Bridges and Repair and Replacement Process

截至2019年底,我国高速公路总里程接近15万km,1998~2016年,我国高速公路年平均通车里程为6642km,平均增速20%,为全国180亿人次的出行和130亿t货物流通提供基础设施。但同时,高速公路桥梁施工也存在一些容易造成质量事故的因素,存在制约着高速公路质量管控的问题,分析桥梁伸缩病害原因,给出解决办法,希望能给相关人员提供借鉴。

By the end of 2019,the total mileage of expressways in China is close to 150000km.From 1998 to 2016,the average annual mileage of expressways in China is 6642km,with an average growth rate of 20%,providing infrastructure for 18 billion person trips and 13 billion tons of goods circulation in China.But at the same time,there are also some factors that are easy to cause quality accidents in highway bridge construction projects,and there are problems restricting the quality control of highway.