Research on Joint Waterproof Design of Deeply Buried Segment for Connecting Line of Shanghai Airport
Aiming at the deeply buried segments of connecting line of Shanghai Airport located in the high water pressure environment,considering the factors of joint offset and opening amount,and stress relaxation within the service life period,the designed water pressure resistance index of waterproof sealing gasket is proposed,and also the closed compressing force index of the sealing gasket is put forward.Based on the relevant engineering research and test results in China,two sets of sealing gasket sections are selected to conduct the water pressure resistance test and assembly force test in order to determine the section of sealing gasket used in the deeply buried section.The design of joint structure is optimized,which provides the reference for the similar projects.
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