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Construction method of open excavation prefabricated underground structure

A prefabricated assembly and underground structure technology, which is applied to underwater structures, infrastructure engineering, artificial islands, etc., can solve the problems of small structural space and difficulty in meeting the requirements of large-scale underground engineering functions, so as to reduce construction investment, The effect of shortening the construction period and reducing the impact on the environment

Active Publication Date: 2014-07-09
BEIJING URBAN CONSTR DESIGN & DEV GRP CO +2
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AI Technical Summary

Problems solved by technology

The structural space constructed by shield machines and other equipment is small, and it is difficult to meet the functional requirements of large-scale underground projects

Method used

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  • Construction method of open excavation prefabricated underground structure
  • Construction method of open excavation prefabricated underground structure
  • Construction method of open excavation prefabricated underground structure

Examples

Experimental program
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Embodiment Construction

[0046] see Figure 1 to Figure 8 Shown: take the pile+anchor rod foundation pit structure as an example to explain the specific embodiment of the present invention as follows:

[0047] (1) Level the site, construct the foundation pit support structure 1, excavate to the design elevation of the bottom of the pit, construct the base cushion 2, and install and debug the gantry crane 3 in place;

[0048] (2) Use theodolite or total station to accurately place the point, and manually set out the line on the base cushion layer or the laser instrument to set the line at a fixed point to ensure that the prefabricated component bottom plate 6 is accurately in place;

[0049] (3) Install the fixing bracket 4 on the starting end face of the assembly in advance to ensure the accurate positioning and locking of the prefabricated components of the first ring;

[0050] (4) Accurate positioning of the prefabricated component floor 6 is achieved through the gantry crane 3 or the base translat...

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Abstract

A construction method of an open excavation prefabricated underground structure includes the steps: 1, leveling a ground to serve as a foundation pit supporting structure and a base cushion layer; 2, mounting a fixing support at an assembly initial end; 3, hoisting prefabricated components to assemble a structural base plate; 4, assembling a special assembly trolley on the structural base plate; 5, assembling side walls and top plates of the prefabricated components; 6, backfilling upper portions of the top plates and outer portions of structural side walls to complete assembly of the underground structure. The construction method has the advantages that construction mechanical level is improved; operating personnel amount is greatly decreased, operating efficiency is improved, engineering construction quality is improved, resource consumption is reduced, environmental influences are lowered, and construction period can be greatly shortened; amount of mould plates in cast-in-situ concrete structures, peripheral shields, scaffolds and wastes is greatly decreased to relieve field operation intensity and reduce construction input; construction in chilly winter is realized, engineering construction quality is improved, and potential safety hazards such as fire hazards and the like in construction of traditional cast-in-situ concrete structures in winter can be avoided.

Description

technical field [0001] The invention relates to the technical field of underground engineering construction, in particular to a construction method for forming an underground structure by assembling a plurality of prefabricated components under the condition of an open-cut foundation pit. Background technique [0002] With the continuous advancement of the country's urbanization process, land resources are becoming increasingly tense, and people are paying more and more attention to the multiple use of land. The development and utilization of underground space is one of the important directions to make full use of precious land resources to achieve sustainable development. With the enhancement of national awareness of environmental protection, the problem of population aging and the demand for a large number of underground engineering constructions, the traditional construction methods of underground engineering structures can no longer meet the needs of people and social de...

Claims

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Application Information

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IPC IPC(8): E02D29/05
Inventor 杨秀仁王臣王焕刚刘勃丛敏李莉高秀岩黄美群杨明丁德云陈久恒谢辕轩祖培禄李文波
Owner BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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