Experimental study of parameter and key process on slide of final joint in immersed tunnel from Shenzhen-Zhongshan link

Precast pipe jacking construction technology has been widely applied in bridges engineering, however, the jacking technology in immersed tunnel is different from bridges, the former requires higher synchronization of pushing process and pushing performance of equipment. In particular, precast slide rail layout and selection of slide plate material will directly affect the effect of immersed tube tunnel. In this paper, based on the final pipe joint project of immersed tube tunnel in Shenzhen-Zhongshan Link, the research will not only carry out selection and parameter test of slide rail but also scale model test, which will further verify the engineering feasibility of the slide rail design scheme. The experimental result calculates the value range of friction coefficient of slide plate and points out the influence of machining deviation on slide rail, which provides strong support for parameters design and material selection.