Structural design and construction method of a partially assembled subway station

A subway station, partial assembly technology, applied in the direction of basic structure engineering, underwater structures, artificial islands, etc., can solve the problems of uncoordinated deformation of columns and side walls, insufficient deformation capacity of columns, loss of vertical bearing capacity, etc., to achieve Improve the waterproof effect, the waterproof quality is easy, and the effect of improving the construction environment

Active Publication Date: 2021-06-25
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the action of horizontal earthquakes, the deformation of the column and the side wall is uncoordinated. Due to the insufficient deformation capacity of the column, bending and shear failure occurs and the vertical bearing capacity is lost, which leads to the overall collapse of the station structure

Method used

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  • Structural design and construction method of a partially assembled subway station
  • Structural design and construction method of a partially assembled subway station
  • Structural design and construction method of a partially assembled subway station

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Experimental program
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specific Embodiment

[0057] Step 1: Construction enclosure, leveling the site, constructing bored piles at equal intervals along the periphery of the foundation pit, pouring pile crown beams, excavating the foundation pit and supporting it in time.

[0058] Step 2: Apply the floor cushion. After the cushion is finally set, construct the waterproof layer and protective layer of the floor.

[0059] Step 3: Bind the bottom slab, bottom beam and side wall steel bars, and pour them on site separately. At the height of each floor slab, a reinforcement layer is set to connect the cast-in-place side wall and the bored pile, and the two are poured as one. Corbels are set at the joints between the cast-in-place side wall and the laminated middle plate and the prefabricated arched roof; the top surface of the cast-in-place side wall is provided with notches, reserved holes and extended longitudinal ribs for connecting the prefabricated arched roof.

[0060] Step 4: Assemble the prefabricated lower column, p...

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Abstract

The invention discloses a structural design and construction method of a partially assembled subway station, comprising an open-cut foundation pit and its enclosure structure, a cast-in-place bottom plate and bottom beams, a cast-in-place side wall, a laminated middle plate, a prefabricated column, and a prefabricated beam , Prefabricated arched roof. The station floor and side walls are poured on site, and the outer side walls use the enclosure structure as a formwork to achieve an integrated design with the enclosure structure. The prefabricated columns and prefabricated beams of the station are connected through grouting sleeves, the middle plate is constructed using laminated plate technology, and the arched roof is prefabricated in the factory and transported to the site for assembly. The prestressed arched roof distributes the vertical load to the side walls and the enclosure structure, which reduces the axial compression ratio of the key components of the underground structure, the structural force is more reasonable, and the seismic performance is better; compared with the fully prefabricated station structure , the number of splicing seams of the prefabricated components of the present invention is small, which is beneficial to improving the waterproof effect of the subway station. The invention has simple structure and convenient installation, and conforms to the trend of building industrialization.

Description

technical field [0001] The invention relates to the field of civil engineering design and construction, in particular to the field of underground assembly structures, in particular to a structural design and construction method of a partially assembled subway station. Background technique [0002] my country's urban rail transit construction speed and scale rank first in the world, and traditional construction methods have been difficult to meet the rapid development of urbanization. At present, open excavation combined with on-site pouring is still the main method of subway station construction, which is economical, safe and reliable in quality. However, the open-cut and cast-in-place method has problems such as long construction period, serious impact of construction road occupation on ground traffic, large loss of turnover materials, serious noise and dust pollution, and the construction process is easily affected by climatic conditions, which cannot meet the requirements...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/045
CPCE02D29/04E02D29/045
Inventor 路德春吴春玉杜修力马一丁
Owner BEIJING UNIV OF TECH
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