Shield tunnel segment caulked joint anti-falling device

Abstract

The invention provides a shield tunnel segment caulked joint anti-falling device so as to effectively avoid the influence of caulked joint material falling on a tunnel and ensure the operating safetyof a train. The shield tunnel segment caulked joint anti-falling device comprises sliding groove components, bolts and arc-shaped rubber belts, the sliding groove components are pre-buried in segmentsof the two sides of a caulked joint and provided with T-shaped grooves extending in the length direction, and the opening ends of the T-shaped grooves are located on the outer surfaces, flush with the inner surfaces of the segments, of the sliding groove components; the bolts are arranged at intervals in the longitudinal directions of the sliding groove components, the heads of the bolts are located in the T-shaped grooves and vertically constrained by the T-shaped grooves, the tail screw sections of the bolts extend out of the T-shaped groove outwards, and the bolts are sleeved with nuts andpressing plates; and the arc-shaped rubber belts stretch across the caulked joint, and the transverse two sides of the arc-shaped rubber belts are pressed and tightly attached to the inner surfaces of the segments through the bolts, the nuts, the pressing plates and cushion blocks.

Description

technical field [0001] The invention relates to shield tunnel engineering, in particular to a shield tunnel segment caulking anti-falling-off device. Background technique [0002] In recent years, shield tunneling has developed rapidly in industries such as subways, railways, and highways due to its characteristics of non-excavation, fast construction speed, and low labor intensity. [0003] The shield tunnel lining is mainly made of prefabricated concrete segments. In order to avoid excessive contact stress of the corner concrete points and concrete falling off when the segments are assembled, the inner joints of the segments are usually retracted by a few millimeters, and the joints are formed after the segments are assembled. . Considering the waterproof requirements of the joints, rubber strips or caulking glue are usually used for caulking after the segments are assembled. [0004] From the point of view of practical application, the caulking of the segment effectivel...

AI Technical Summary

Problems solved by technology

However, under the influence of repeated vibrations of vehicles running in the tunnel and uneven longitudinal settlement of the tunnel, the caulking materials are easy to stagger or even fall off.

For subway tunnels and railway tunnels with catenary, after the caulking material falls off, it often hangs on the catenary, causing short-circuit damage to the catenary, and even causing train outage accidents

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