Research on Waterproof Performance of Elastic Sealing Pad for Shield Tunnel Segment Joints
In order to study the waterproof performance of the elastic waterproof sealing gasket for the joint of the shield seg-ment of the subway,the paper takes interval shield project of Tianjin Metro Line 6 from the Lushuidao station to Shuanggang Station as the research background,and through finite element numerical simulation,studies the relevant effects of Hardness,joint opening,various opening forms and filling rates on the closing pressure and waterproof performance of the elastic water-proof sealing gasket in turn.And waterproof performance tests were conducted on the elastic waterproof sealing gasket at the joint of the pipe segment.The research results indicate that the waterproof performance of joints is greatly influenced by factors such as assembly closing force,elastic waterproof sealing pad parameters,joint opening amount,and misalignment amount;When the parameters of the assembly closing force and elastic waterproof sealing gasket are consistent,the increase in seam opening and misalignment will weaken the waterproof performance of the elastic waterproof sealing gasket.
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