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Shield before well construction method of underground comprehensive pipe gallery structure

A technology of integrated pipe gallery and construction method, applied in underwater structures, infrastructure engineering, artificial islands, etc., can solve the problems of long construction period, affecting the penetration time of the pipe gallery, and difficulty in relocating and arranging pipelines. The effect of flexible construction organization and reduced construction period

Inactive Publication Date: 2019-10-08
TIANJIN MUNICIPAL ENG DESIGN & RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the construction of node wells, the construction period is too long due to the cramped site and the difficulties in pipeline relocation and arrangement, which in turn delays the shield excavation along the line and affects the penetration time of the entire pipe gallery

Method used

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  • Shield before well construction method of underground comprehensive pipe gallery structure
  • Shield before well construction method of underground comprehensive pipe gallery structure

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Embodiment Construction

[0021] In order to further understand the content, features and effects of the present invention, the following examples are given, and detailed descriptions are given below with reference to the accompanying drawings.

[0022] see figure 1 with figure 2 , the construction steps of the construction method of the underground comprehensive pipe gallery structure of "shield first and then well" in the present invention: that is, first construct the protective piles surrounding the foundation pit of the node well, and after the shield tunneling and assembling segments pass through the well position, the upper And excavate the foundation pit of the node well, and remove the segment in the pit as it is dug and braced, and finally pour the main structure of the node well. Specifically, it includes the following construction steps and technical points:

[0023] Step 1: Protective piles around wells at construction nodes 1, where glass fiber reinforcements are used to protect piles ...

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Abstract

The invention discloses a shield before well construction method of an underground comprehensive pipe gallery structure. The method comprises the steps of constructing a joint well enclosure pile, constructing high-pressure jet grouting pile foundation reinforcement, tunneling a shield of a pipe gallery standard section to a node well, cutting a node well enclosing pile, completing the crossing ofthe range of the node well and assembling shield pipe segments, reinforcing 10 adjacent ring pipe segments on the two sides of a well site, breaking the road surface, starting node well foundation pit excavation, drawing and tying the top of the enclosing pile into a ring by using a crown beam, and adopting a reinforced concrete support I for the first road, excavating foundation pits layer by layer from top to bottom, erecting steel supports layer by layer, when the foundation pit is excavated to the top of the shield segment, pouring a reinforced concrete support II and a reinforced concrete purlin, dismantling and hanging the shield segment in the range of the node well, excavating earthwork to the pit bottom, pouring box body concrete of the node well layer by layer from bottom to top, and dismantling the support layer by layer to complete the main body structure of the node well. Construction organization is more flexible, and the construction period of the shield pipe gallery can be greatly reduced.

Description

technical field [0001] The invention relates to the structural design of an underground comprehensive pipe gallery, and more specifically relates to a construction method of an underground comprehensive pipe gallery structure of "shield first and well behind". Background technique [0002] The comprehensive pipe gallery is one of the important symbols of the modernization of new urban municipal infrastructure construction in the 21st century. It avoids the trouble of repeated road excavation due to burying or repairing pipelines. Corrosion prolongs the service life of the pipeline, and it also reserves valuable underground space for the development of the city. However, many underground pipe corridors planned in the old city need to pass through densely populated living areas, urban arterial roads, rivers, bridges, and even pass through buildings. The construction of this type of pipe gallery does not meet the open-cut conditions in consideration of factors such as protecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045
CPCE02D29/10
Inventor 徐管应周作顺董雪李永波李爱民周守凯王焰华李学峥赵俊妍王鹏郭旺于祺李斌邸鑫鹏钱枫
Owner TIANJIN MUNICIPAL ENG DESIGN & RES INST
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