Subway segment gap sealing construction process

Abstract

The invention discloses a subway segment gap sealing construction process which sequentially includes the steps that step 1, according to the specification of a subway segment, a water swelling rubber pipe is cut, and segmented water swelling rubber pipes are formed; step 2, the segmented water swelling rubber pipes are bonded end to end, and a frame matched with the subway segment in shape is defined; and step 3, the frame-shaped water swelling rubber pipe is connected with the subway segment which are not assembled in a sleeving mode, and gap sealing is achieved after the subway segment is assembled. The shape of the water swelling rubber pipe can be automatically adjusted to achieve sealing, so that the problem of leakage caused by uneven gaps is solved; after the subway segments are assembled and a water swelling water-stopping glue is injected to enable the water swelling rubber pipe to form the internal pressure of 0.5-5 MPa, the water swelling rubber pipe can resist the water pressure of 0.5-5 MPa regardless of the size of an assembling gap, and the sealing effect is achieved; and meanwhile, after meeting water, the volume of the water swelling rubber pipe and the volume of the water swelling water-stopping glue can be expanded by 150-500%, so that the reliability and the durability of the sealing effect are ensured.

Description

technical field [0001] The invention relates to a construction technique for sealing gaps in subway segments. Background technique [0002] Subway construction segments are usually shield segments, whose main function is to resist special loads such as soil pressure. Subway segments are assembled while the tunnel is advancing to ensure the stability of the tunnel soil and prevent the tunnel section from being squeezed by the soil in time. out of shape. The subway segment is the innermost barrier of the tunnel and the permanent lining structure of the shield tunnel. The quality of the subway segment is directly related to the overall quality and safety of the tunnel, and affects the waterproof performance and durability of the tunnel. The production of subway segments usually uses high-strength impermeable concrete to ensure reliable load-bearing and waterproof performance. The production mainly uses the finished segment mold to form after sealing and pouring concrete. In p...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a subway segment gap sealing construction process, which can effectively solve the water seepage sealing problem caused by the uneven size of the subway segment assembly gap, which adopts the following technical scheme: