A kind of pipe joint joint fireproof structure and construction method for immersed pipe tunnel

Abstract

The invention discloses a tube section joint fire-protection structure for an immersed tube tunnel and a construction method. The tube section joint fire-protection structure comprises a first protection component and a second protection component. The first protection component is a rigid structural component; and one end of the first protection component is used for being fixed to one side of the end of a first tube joint, and the other end of the first protection component is used for being movably connected to one side of the end of a second tube joint. The second protection component is a flexible structural component; and one end of the second protection component is used for being fixed to one side of the end of the first tube joint, and the other end of the second protection component is used for being fixed to one side of the end of the second tube joint. According to the construction method, the second protection component is mounted in the first place, and then the first protection component is mounted. According to the fire-protection structure for the immersed tube joints, two joint fire-protection structure bodies which combine rigidity and flexibility are formed through the first protection component and the second protection component; effectiveness and reliability of fire protection and heat insulation achieved during the operation period can be effectively improved; furthermore, the tube section joint fire-protection structure can be flexibly adapted to deformation of the tube section joints; during the construction period and the operation period, the tube section joint fire-protection structure can play the effective protection role for tube sections; and the construction method for the fire-protection structure for the tube section joints is simple, safe and efficient.

Description

technical field [0001] The invention relates to the field of tunnel engineering, in particular to a fireproof structure and a construction method for a pipe joint of an immersed tunnel. Background technique [0002] In the field of tunnel engineering, especially when two structural joints are connected and installed, fire protection design is required for joints and other parts, especially when it comes to the butt joints of underwater immersed tunnels. Fire protection design for joints. [0003] The fire protection design of the existing immersed pipe joint joints is generally realized by the overlapping arrangement of multilayer fireproof boards, that is, the rigid fireproof board is fixed between the two pipe joint joints, and the two pipe joint joints are sealed; this structure The construction is cumbersome, the heat insulation and sealing performance are not good, and it is especially difficult to adapt to the longitudinal tensioning deformation of the pipe joints in ...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the fire protection design of pipe joints existing in the prior art. The gap between the two joints is directly fixed by the fire board, which cannot adapt to the longitudinal deformation of the tunnel during operation, causing the fire board to break or the fire board to break. In order to solve the above-mentioned deficiencies of fire protection failure due to excessive joints, a fireproof structure of pipe joint joints is provided, and a construction method for fire protection structure of pipe joint joints for immersed tunnels is also provided

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