During the construction of the shore connecting section of the immersed tunnel,a secondary water stop structure is installed in the thrust section to ensure waterless construction conditions.For the convenience of construction,a modular and detachable steel buttressed cofferdam structure is designed to achieve rapid installation and disassembly of secondary water stop structures.In this paper,the stress and deformation are analyzed by finite element software and compared with deformation data monitored during actual construction process.The research results indicate that the prefabricated steel buttress structure has good water stopping effect,convenient construction,saving construction costs and construction period,and provides new ideas for the design of water stop structures.
关键词
二次止水结构/模块化/钢扶壁/装配式
Key words
secondary water stop structure/modular/steel buttress/prefabricated