预应力管道节段接头施工关键技术及质量控制

Key Technology and Quality Control of Prestressed Pipeline Segment Joint Construction

在国家经济快速发展的过程中,隧道施工已经是作为当前基础设施建设过程中必不可少的一部分,对于促进不同区域经济、人文交流起到了积极作用。沉管隧道建设以其造价相对较低、综合工期短、管段预制质量易于控制的特点在世界各国得到广泛应用。沉管预制质量也受到了越来越多的关注,其中预应力孔道作为沉管隧道施工中必不可少道一部分。本文以大连湾海底隧道为例,总结了沉管预应力管道节段接头施工质量的控制方法。

In the process of the rapid development of national economy,tunnel construction has been an indispensable part of the current infrastructure construction process,and has played a positive role in promoting economic and cultural exchanges in different regions.Immersed tunnel construction is widely used all over the world because of its relatively low cost,short comprehensive construction period and easy control of pipe prefabrication quality.The prefabrication quality of immersed tube has also attracted more and more attention,among which the prestressed tunnel is an indispensable part in the construction of immersed tube tunnel.Taking Dalian Bay Subsea Tunnel as an example,this paper summarizes the construction quality control methods of immersed prestressed pipeline segment joints.