Internal supporting and reinforcing method for large-scale underground comprehensive pipe gallery wall plate without external mold

A comprehensive pipe gallery and large-scale technology, which is applied in the field of internal support and reinforcement of large-scale underground comprehensive pipe gallery without external formwork and wall panels, can solve the problems of inconvenient movement, inflexible construction, and heavy weight of triangular steel pipe trusses, etc. Quality and the effect of reducing construction costs

Inactive Publication Date: 2020-07-03
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the support system of this application adopts a triangular steel pipe truss system. The triangular steel pipe truss is heavy and inconvenient to move, resulting in inflexible construction

Method used

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  • Internal supporting and reinforcing method for large-scale underground comprehensive pipe gallery wall plate without external mold
  • Internal supporting and reinforcing method for large-scale underground comprehensive pipe gallery wall plate without external mold
  • Internal supporting and reinforcing method for large-scale underground comprehensive pipe gallery wall plate without external mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this embodiment, a large-scale underground comprehensive pipe gallery has no external formwork and wall plate internal support reinforcement method, and its specific steps are:

[0038] Step 1. Concrete the bottom plate 12 of the pipe gallery:

[0039] to combine figure 1 According to the requirements of the design drawings, the bottom plate 12 of the pipe gallery formed by pouring concrete is used as the foundation of the support system of the overall formwork 1.

[0040] Step 2. Install the inner and outer walls and roof formwork 1 on the basis of the bottom plate 12 of the pipe gallery, and set up a socket-type buckle-type steel pipe support system:

[0041] to combine figure 2 , according to the requirements of the design drawings and specifications, when the concrete strength reaches 1.2N / m 2 In order to make the foundation of the internal support system stable and safe, and to do a good job of protecting the finished concrete of the bottom plate 12, when th...

Embodiment 2

[0052] Xi'an City's underground comprehensive pipe gallery construction PPP project II bid section, using the underground comprehensive pipe gallery project without external formwork wall plate support reinforcement method proposed by the present invention, realized the underground comprehensive pipe gallery project without external formwork wall plate support reinforcement method, Until the completion of all the construction of the corridor structure. This method is used to strengthen the formwork on one side to avoid the problem of formwork expansion, and the verticality of the wall is good, and the use effect is good.

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Abstract

The invention discloses an internal supporting and reinforcing method for a large-scale underground comprehensive pipe gallery wall plate without an external mold, and belongs to the field of buildingengineering. According to the supporting and reinforcing method provided by the invention, a bottom plate after the pipe gallery is formed is used as a foundation of an integral formwork supporting system, and when concrete of the bottom plate of the pipe gallery reaches 50% of the design strength, a socket plate buckle type steel pipe supporting system is used for erecting an inner supporting system of a formwork. A middle wall after the pipe gallery is formed is used as a foundation of a single-side formwork supporting system of an outer wall, when the concrete of an inner wall reaches 50%of design strength, a single-side formwork of the wall is reinforced by adopting a fastener type steel pipe system, and the fastener type steel pipe system consists of a fastening part and a supporting part. According to the supporting and reinforcing method disclosed by the invention, steel pipe materials are easy to obtain, the use is economic and reasonable, the construction cost can be reduced, the construction quality can be improved, the problem of reinforcing the underground comprehensive pipe gallery project wall plate without the external mold is solved, and the supporting and reinforcing method is safe, reliable and simple to apply.

Description

technical field [0001] The invention relates to the technical field of construction engineering, and more specifically relates to a method for strengthening the internal support of a large-scale underground comprehensive utility gallery without external formwork wall panels. Background technique [0002] During building construction, large lateral pressures are generated when pouring vertical members. Double-sided formwork is usually set and fixed with a three-stage water-stop screw to prevent the formwork from expanding and deforming. At present, in the urban underground comprehensive pipe gallery project, in order to save land, materials, costs and other factors, the foundation pit enclosure (wall, pile) structure will be used as the outer formwork (single-sided) of the outer wall. In the process of pouring the external walls of large-scale underground comprehensive pipe galleries, the method of supporting piles, hanging nets and spraying concrete is often used, then plas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045
CPCE02D29/10
Inventor 田润
Owner CHINA MCC17 GRP
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