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Peaty soft soil stratum subway station construction technology

A technology of subway stations and construction techniques, applied in artificial islands, water conservancy projects, infrastructure projects, etc., can solve problems such as lack of construction experience and construction difficulties in urban subway construction

Active Publication Date: 2014-02-19
中铁二十局集团第五工程有限公司
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

Especially in the peaty soft soil area of ​​the Dianchi Lake Basin in Kunming, there is no construction experience for reference when constructing subway stations with open-cut deep foundation pits, which brings construction difficulties to the construction of urban subways

Method used

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  • Peaty soft soil stratum subway station construction technology
  • Peaty soft soil stratum subway station construction technology
  • Peaty soft soil stratum subway station construction technology

Examples

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Embodiment Construction

[0079] Such as figure 1 Shown is a construction technique for a subway station on a peaty soft soil layer. The main structure of the constructed subway station includes a base plate 1, two side walls 2 respectively arranged on the left and right sides of the base plate 1, a roof plate 3 directly above the base plate 1 and The middle board 4 arranged between the top board 3 and the bottom board 1, the number of the middle board 4 is one or more, and a plurality of the middle boards 4 are arranged between the top board 3 and the bottom board 1 from top to bottom. The left and right sides of the bottom plate 1, the top plate 3 and the middle plate 4 are connected as a whole with the side wall 2; between the bottom plate 1 and the middle plate 4 above it, between the top plate 3 and the middle plate 4 below it, and The upper and lower adjacent two middle plates 4 are supported by columns 5; the outer sides of the two side walls 2 are provided with underground continuous walls 6, s...

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Abstract

The invention discloses a peaty soft soil stratum subway station construction technology. A main structure of a constructed subway station comprises base plates, side walls, top plates and middle plates distributed between the top plates and the base plates. Underground consecutive walls are arranged on outer sides of the two side walls. The base plates, the side walls, the middle plates and the top plates are all of a rebar concrete structure formed by pouring waterproof concrete. The subway station construction technology comprises the following steps: (1) underground consecutive wall construction, (2) foundation reinforcement, namely, three-shaft stirring piles are used for reinforcing the foundation of excavated foundation pits, (3) vacuum water falling, namely conducting vacuum well point water falling construction on the foundation pits needing excavating, (4) foundation pit excavation, namely, an open excavation method is used for conducting earthwork excavation on the foundation pits needing excavating with a plurality of excavating layers from top to bottom, (5) subway station main structure construction. The method is simple, convenient to realize, quick in construction speed, capable of being ensured in construction quality easily, and good in construction effect, and enables the subway station construction process of peaty soft soil stratum to be completed simply, quickly and with high quality.

Description

technical field [0001] The invention belongs to the technical field of subway station construction, and in particular relates to a construction technique for a subway station on a peaty soft soil layer. Background technique [0002] According to the "Code for Geotechnical Engineering Investigation", the peat soil in Kunming mainly includes peat soil and peat. The organic matter content of peat and peat soil is 10-60%, and the weight is 10-14KN / m 3 , is an important soil layer widely distributed in Kunming area. Buildings, municipal facilities, roads, and underground works in many peat soil areas have experienced large deformation and uneven settlement, and even damage and instability, and many engineering accidents have occurred. The peaty soft soil formation in Kunming area has the characteristics of high compressibility, large void ratio, high water content, high sensitivity, low bearing capacity, etc., and its engineering properties are poor, which may easily cause exces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/05E02D5/18E02D19/10E02D17/02E02D17/04E02D31/02E02D29/16
Inventor 魏辉李斌川张永民姚志义李武祥白杰王晋国薛小燕杨军峰杨延岗刘广庆
Owner 中铁二十局集团第五工程有限公司
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