明挖高填方机场下穿通道变形缝防水施工技术探析

Analysis on Waterproofing Construction Technology for Deformation Joint of Open-cut High-fill Airport Underpass

随着我国基础设施建设的快速发展,明挖高填方机场下穿通道在交通运输领域的应用越来越广泛。然而,由于施工环境复杂,变形缝防水施工一直是此类工程的难点。文章针对这一问题,以实际工程为例,首先介绍研究背景及工程概况,然后从混凝土浇筑、止水带施工、防水卷材铺设及开展闭水试验四个方面详细阐述明挖高填方机场下穿通道变形缝防水施工技术,以期为我国明挖高填方机场下穿通道建设提供技术支持。

With the rapid development of infrastructure construction in China,the application of open-cut high-fill airport underpass in the field of transportation is more and more extensive.However,due to the complex construction environment,the waterproofing construction of deformation joints has always been a challenge for such projects.Aiming at this problem,taking the actual project as an example,this paper first introduces the research background and project overview,and then elaborates the waterproofing construction technology for the deformation joints of the open-cut high-fill airport underpass from four aspects:concrete pouring,water-stop construction,waterproofing membrane laying and closed water test,in order to provide technical support for the construction of the open-cut high-fill airport underpass in China.