Construction method and system for roof reinforcement system conversion of immersed tube prefabrication

A system conversion and construction method technology, applied in artificial islands, water conservancy projects, infrastructure projects, etc., can solve problems such as roof reinforcement construction, and achieve the effects of high work efficiency, convenient operation, and reduced construction period.

Active Publication Date: 2020-10-09
CCCC SECOND HARBOR ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a construction method for the conversion of immersed tube prefabricated roof reinforcement system to solve the construction problem of immersed tube full-section prefabricated roof reinforcement

Method used

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  • Construction method and system for roof reinforcement system conversion of immersed tube prefabrication
  • Construction method and system for roof reinforcement system conversion of immersed tube prefabrication
  • Construction method and system for roof reinforcement system conversion of immersed tube prefabrication

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Experimental program
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Effect test

Embodiment 1

[0048] Such as figure 1As shown, the present invention provides a construction method for the transformation of steel bar system of immersed tube prefabricated roof. Self-expandable and self-propelled.

[0049] Include the following steps:

[0050] Step 1, such as Figure 4 and Figure 5 As shown, the construction content of segment n before the outer mold is demoulded

[0051] Step 1.1, Segment n+1 floor steel bar and vertical wall steel bar binding, after the bottom plate steel bar and vertical wall steel bar binding is completed, install the support frame 18 of the middle pipe gallery, the support frame 18 of the middle pipe gallery is made of section steel, and the support frame 18 of the middle pipe gallery The root is welded to the middle partition wall skeleton 19, and the center line of the support frame coincides with the center line of the immersed tube.

[0052] Step 1.2: After the binding of the steel bars on the bottom plate and the vertical wall of section n...

Embodiment 2

[0067] Construction systems for conversion of immersed tube prefabricated roof reinforcement systems, such as figure 2 and image 3 As shown, it includes: outer mold trolley 1, inner mold trolley 2, corridor trolley 3, reinforcement trolley 4 and spreader 5 for system conversion;

[0068] The inner mold trolley 2, the corridor trolley 3 and the reinforcement trolley 4 all adopt a walking mode, that is, they are pushed by their respective hydraulic systems, and their respective fixed legs 10 and movable legs 11 are mutually inverted. Way to walk, the inner mold trolley 2, corridor trolley 3 and reinforcement trolley 4 are all provided with a self-shrinkable support cylinder 12 and a self-shrinkable support screw 13.

[0069] Wherein the fixed support leg 10 and the movable support leg 11 walk in the way of mutual inversion, taking the inner mold trolley 2 as an example, specifically: 1. The movable support leg 11 oil cylinder lifts the cylinder, so that the movable support le...

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Abstract

The invention discloses a construction method and system for roof reinforcement system conversion of immersed tube prefabrication. The construction method is characterized by comprising the followingsteps that 1, construction before demolding of an outer mold of a segment n is carried out; 2, roof system conversion construction of a segment (n+1) is carried out; and 3, mold closing construction of the segment (n+1) is carried out. According to the construction method and system, roof reinforcement is bound in advance through a reinforcement trolley, critical path work is reduced through system conversion, the construction time of a critical path is effectively shortened, and full-section construction of immersed tubes is guaranteed; and longitudinal main ribs of the adjacent segments areconnected in the whole length direction, the construction quality is effectively improved, and the immersed tube water seepage risk is reduced.

Description

technical field [0001] The invention relates to the construction field of immersed tube tunnels. More specifically, the present invention relates to a construction method and system for the conversion of immersed tube prefabricated roof reinforcement system. Background technique [0002] As a cross-sea and river-crossing structure, immersed tube tunnels can be constructed in relatively weak ground conditions, seismically active areas, inland and marine environments, urban areas with restricted operations, and environmentally sensitive areas. At present, immersed tube prefabrication is mainly divided into layered prefabrication and full-section prefabrication. The full-section prefabrication method has gradually become the preferred method for immersed tube prefabrication due to the advantages of fewer construction joints and low risk of water seepage. According to the immersed tube prefabrication process, the construction of roof reinforcement has a great influence on the f...

Claims

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Application Information

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IPC IPC(8): E02D29/063
CPCE02D29/063
Inventor 孙晓伟冯先导曾波存陈金元余登文王聪穆清君徐彬彬朱金波张海川刘陪阳彭浩
Owner CCCC SECOND HARBOR ENG
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