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An integrated structure and construction method of foundation pit support of urban underground comprehensive pipe gallery and external formwork of underground structure

A technology that integrates pipe galleries and underground structures. It is used in infrastructure engineering, underwater structures, and excavation. It can solve the problems of reducing excavation space, occupying more width of municipal roads, and limited working space for open-cut excavation. The effect of reducing the excavation space and having little impact on the surrounding environment

Active Publication Date: 2018-07-24
KUNMING UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, various underground pipelines are three-dimensional structures independent of each other. Often, due to the expansion and maintenance of various pipelines, the road "zips" and seriously affects urban traffic and city appearance.
More and more cities are beginning to plan to build urban underground comprehensive utility corridors to solve the problem of road "zipper". However, urban underground comprehensive utility corridors are mainly laid out under municipal roads, and the available open-cut excavation work space is limited and cannot be used for underground construction. The external formwork of the comprehensive pipe gallery structure provides enough space for erection; in addition, when constructing the underground comprehensive pipe gallery on the municipal road, the excavation space should be minimized to avoid occupying the width of the municipal road during construction, and provide conditions for urban traffic flow, thus reducing the construction cost. The problem of digging space has great technical value and economic significance

Method used

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  • An integrated structure and construction method of foundation pit support of urban underground comprehensive pipe gallery and external formwork of underground structure
  • An integrated structure and construction method of foundation pit support of urban underground comprehensive pipe gallery and external formwork of underground structure
  • An integrated structure and construction method of foundation pit support of urban underground comprehensive pipe gallery and external formwork of underground structure

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Embodiment 1

[0052] Embodiment 1: As shown in the figure: according to the conditions of the surrounding roads and surrounding buildings, the comprehensive pipe gallery 11 with a cross-sectional size of 3000×4200mm is constructed by the open cut method. The buried depth of the bottom plate is 7m, and the soil condition is clay. C40 reinforced concrete with impermeability level of P6 uses HRB400 steel bars with a diameter of 12mm. Cushion 14 adopts 100mm thick C20 plain concrete. First, install the HDPE material formwork 3 of 3200×1500×20mm on two interpolated steels 2 arranged at a distance of 800mm. The formwork and the interpolated steels are connected by U-shaped bolts 12 with a diameter of 18mm. The U-shaped bolts use 10mm pads. plate; and then the tool piece is connected to the top of the two interpolated section steel 2 by bolts 13, forming a component unit at this time. Among them, the inserted section steel 2 adopts the type 40 inserted I-beam with a length of 8m; the tool part 4 ...

Embodiment 2

[0053] Example 2: As shown in the figure: the comprehensive pipe gallery with a section size of 3000×3000mm is constructed by the open cut method, the depth of the bottom plate is 6m, the soil condition is muddy soil, and C40 reinforced concrete with an impermeability grade of P8 is used in the design , which uses HRB400 steel bars with a diameter of 12mm. Cushion 14 adopts 100mm thick C20 plain concrete. Firstly, the formwork 3 of 3200×1500×20mm steel material is installed on two interpolated steels 2 arranged at a distance of 400mm. 10mm backing plate; then the tool piece 4 is connected to the top of the two interpolated steel sections 2 through bolts 13, forming a component unit at this time. Among them, the interpolation steel 2 adopts the interpolation H-beam of model 40#, and the length is 8m; the tool part 4 adopts the angle steel of 200×125×12mm and the steel plate of 500×800×20mm. Repeat the above process to complete all the component units required for construction...

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Abstract

The invention relates to an urban underground comprehensive pipe gallery foundation pit support and underground structure external mold integrated structure and a construction method, and belongs to the field of underground engineering. By the urban underground comprehensive pipe gallery foundation pit support and underground structure external mold integrated structure, a foundation pit is supported well, furthermore, excavated space is reduced, meanwhile, all components in the structure and the construction method can be standard components, and therefore, the purpose of recycling the components is achieved. The urban underground comprehensive pipe gallery foundation pit support and underground structure external mold integrated structure has the advantages of economy, environmental friendliness, energy conservation and small influence to a surrounding environment, and can be used in a complete process of underground pipelines such as municipal pipelines, natural gas pipelines and communication pipelines.

Description

technical field [0001] The invention relates to an integrated structure and construction method of an urban underground comprehensive pipe gallery foundation pit support and an external mold of an underground structure, and belongs to the field of underground engineering. Background technique [0002] At present, various underground pipelines are three-dimensional structures independent of each other. The expansion and maintenance of various pipelines often cause road "zippers", seriously affecting urban traffic and city appearance. More and more cities are beginning to plan to build urban underground comprehensive utility corridors to solve the problem of road "zipper". However, urban underground comprehensive utility corridors are mainly laid out under municipal roads, and the available open-cut excavation work space is limited and cannot be used for underground construction. The external formwork of the comprehensive pipe gallery structure provides enough space for erecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/08E02D29/05
CPCE02D17/08E02D29/05E02D2250/0007E02D2300/0029
Inventor 曹净王自忠许利东汪尺曹慧刘海明高春雷
Owner KUNMING UNIV OF SCI & TECH
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