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Concrete support with temporary support being used as permanent structure in cover-excavation method and construction method of concrete support

A technology of temporary support and permanent structure, applied in basic structure engineering, excavation, underwater structures, etc., can solve problems such as delay in construction period, waste of resources, etc., and achieve the effect of reducing garbage, saving project cost, and shortening construction period.

Pending Publication Date: 2018-05-01
GUANGZHOU METRO DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the object of the present invention is to provide a kind of cover-excavation temporary support for permanent structure concrete support and its construction method. Sometimes it can be built as a part of the permanent roof structure by pouring, so as to avoid delays in the construction period and waste of resources caused by the removal of concrete supports.

Method used

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  • Concrete support with temporary support being used as permanent structure in cover-excavation method and construction method of concrete support
  • Concrete support with temporary support being used as permanent structure in cover-excavation method and construction method of concrete support
  • Concrete support with temporary support being used as permanent structure in cover-excavation method and construction method of concrete support

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Embodiment 1

[0040] As shown in the figure, a kind of cap-and-excavation roof according to the present invention is temporarily used as a permanent concrete support construction method, including the following construction steps:

[0041] S10. Level the ground, and build the enclosure structures on both sides according to the pre-built width of the station. 3: Due to the characteristics of the construction environment of the cover-excavation method and the half-cover excavation method, the road surface of the subway construction site shall be leveled first, temporarily. At the same time, according to the stratum, load and other conditions, calculate and determine the size of the corresponding components such as supports and structural plates in each part, and pour the enclosure piles downward according to the pre-built width of the subway station as the enclosure structure on both sides of the subway station 3 ;

[0042] S20. According to the width of the road surface, construct the interm...

Embodiment 2

[0052] Taking the two-story underground half-cover station structure as an example, the implementation method is as follows:

[0053] According to the stratum, load and other conditions, first determine the size of the corresponding components such as the support and the structural plate through calculation; level the site and carry out the construction of the retaining piles on both sides and the temporary column in the middle, excavate the foundation pit 4 to the standard height of the roof, and construct Make part of the roof and concrete support 11, so that the support is consistent with the elevation of the roof in the vertical direction, and reserve a connector connected to the roof structure in the later stage, reserve steel bars connected to the longitudinal beam 15, and pre-embed PVC pipes 111; Concrete retaining walls are built according to part of the roof to restore road traffic; continue to excavate the foundation pit 4 to the elevation of the middle plate, and per...

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Abstract

The invention discloses a concrete support with a temporary support being used as a permanent structure in a cover-excavation method and a construction method of the concrete support. The constructionmethod comprises the following steps that S10, ground leveling is conducted, and enclosure structures on both sides are constructed; S20, middle temporary vertical columns corresponding to road shoulders are constructed; S30, a foundation pit is excavated until the height where a top plate is located after a station is built is reached; S40, a first section of top plate is constructed, and the temporary top support is formed between the first section of top plate and the enclosure structure on the other side through construction of the concrete support; S50, the foundation pit is continuouslyexcavated, and a middle support and a bottom support are constructed; S60, longitudinal beams are constructed, and pouring construction is conducted; and S70, the other section of top plate is constructed with the concrete support serving as an inner support and connected with the first section of top plate. According to the concrete support with the temporary support being used as the permanentstructure in the cover-excavation method and the construction method of the concrete support, the temporary concrete support can be used as the permanent top support, and the problems in aspects suchas construction period delaying, resource waste and environmental protection caused by dismantling of the top plate of the temporary support can be avoided.

Description

technical field [0001] The invention belongs to the technical field of subway station construction, and in particular relates to a concrete support used as a permanent structure as a temporary support by a cover-and-excavation method and a construction method thereof. Background technique [0002] As the hub of urban rail transit and the distribution point of ground passenger flow, subway stations are playing an increasingly important role in connecting the passenger transport functions of the ground and underground. When subway stations are built below main roads or transportation hubs, the cover-and-excavation method is generally used to ensure ground traffic. In order to meet the requirements of station internal construction, equipment hoisting, and shield excavation, some stations are constructed using the half-cover and excavation method. Due to the large area and deep foundation pit of the station, the half-cover excavation method needs to set up internal supports. Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D29/055
CPCE02D17/04E02D29/055
Inventor 许东有智慧贺红霞刘生平张福麟
Owner GUANGZHOU METRO DESIGN & RES INST
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