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Multi-underground-diaphragm-wall combined stratum strengthening precipitation foundation pit enclosure structure

An underground diaphragm wall and foundation pit enclosure technology, applied in foundation structure engineering, sheet pile walls, excavation, etc., can solve the problems of people's life and property loss, ground subsidence, underground water and soil loss, etc., and achieve enhanced safety and reliability degree of effect

Inactive Publication Date: 2017-05-31
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Building deep and large foundation pits in highly permeable and water-rich strata has certain risks. It has always been a problem in the engineering field. Pit collapse, foundation piping, groundwater and soil erosion, surrounding surface subsidence and house collapse, etc., have occurred in the construction of municipal and subway projects in recent years, causing loss of people's lives and property, and the social impact is very bad

Method used

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  • Multi-underground-diaphragm-wall combined stratum strengthening precipitation foundation pit enclosure structure

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Embodiment Construction

[0022] The present invention will be described in detail below in combination with specific embodiments.

[0023] In order to ensure the safe implementation of deep and large foundation pit projects in highly permeable and water-rich strata, according to the stratum conditions, foundation pit structure and use function, the present invention adopts the combination of "multiple underground diaphragm walls + stratum reinforcement between walls + peripheral precipitation" Form effective enclosure measures and provide a reliable support premise for the successful excavation and construction of deep and large foundation pits in highly permeable and water-rich strata. This type of enclosure is suitable for building deep and large foundation pit projects in strata with rich groundwater, adjacent to rivers, lakes and seas, and with strong medium permeability; it is especially suitable for ventilation and drainage for the departure, reception and operation of shield tunneling equipment....

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Abstract

The invention relates to a multi-underground-diaphragm-wall combined stratum strengthening precipitation foundation pit enclosure structure. A reinforced concrete underground diaphragm wall which is closed to form a ring outside the excavation scope inside a foundation pit is included, a reinforced concrete body structure wall is tightly attached to the inner circumference of the reinforced concrete underground diaphragm wall, an outer ring of the reinforced concrete underground diaphragm wall is provided with an outer circumference plain concrete underground diaphragm wall closed to form a ring, stratums between the underground diaphragm walls are strengthened, and precipitation wells are distributed on the outer circumference of the plain concrete underground diaphragm wall on the outmost side, the positions between the underground diaphragm walls and the interior of the foundation pit. The multi-underground-diaphragm-wall combined stratum strengthening precipitation foundation pit enclosure structure is reasonable is stress, obvious in effect and good in implementation, the engineering problem about deep and large foundation pit building in high-permeable stratums, water-rich stratums, stratums close to water areas and other stratums can be effectively solved, the measures are safe and reliable, and the construction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of underground engineering, and in particular relates to a foundation pit enclosure structure with multiple underground continuous walls combined with stratum reinforcement and dewatering. Background technique [0002] With the continuous improvement of construction technology, construction level and construction requirements, more and more new technologies, new processes and new construction methods are applied to the construction of underground projects, and the related highlights, difficulties and special projects are also becoming more and more complex. many. As a kind of underground engineering, foundation pit engineering is widely used in municipal and housing construction projects. In recent years, its application in urban rail transit, municipal pipe gallery, underground space development and utilization, and railway engineering has gradually increased. Various complex and special There are more and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/18E02D19/10
CPCE02D5/18E02D5/187E02D17/04E02D19/10
Inventor 王飞陈海军向亮徐冲靳宝成黄双林
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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