沉管隧道管节接头钢剪力键制作及安装工艺

Manufacturing and installation process of steel shear keys for immersed tunnel pipe joints

随着我国海底隧道工程建设的快速发展,沉管法海底隧道施工技术得到更多应用。沉管隧道管节接头作为沉管连接的关键部位,也是薄弱部位,管节接头止水与剪力键体系对沉管隧道结构的安全性有重要影响。为高质量完成管节接头施工,保证沉管的安全性,文章通过大连湾海底隧道管节接头钢剪力键施工,总结钢剪力键制作及安装技术的具体操作步骤及施工要点,积累沉管隧道管节接头剪力键施工经验,为后续施工提供参考。

With the rapid development of subsea tunnel construction in China,the construction technology of immersed tube method for subsea tunnels has been widely applied.The pipe joint of the immersed tunnel is a key and weak part of the immersed tube connection.The water stop and shear key system of the pipe joint have a significant impact on the safety of the immersed tunnel structure.In order to complete the construction of the pipe joints with high quality and ensure the safety of the immersed tube,this paper summarizes the specific operating steps and construction points of the steel shear key production and installation technology through the steel shear key construction of the pipe joint in Dalian Bay immersed tunnel.It accumulates experience in the construction of the shear keys for the immersed tunnel pipe joints,and provides reference for subsequent construction.