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Foundation pit supporting structure serving as corridor underpinning pile foundation and construction method of foundation pit supporting structure

A foundation pit support and construction method technology, which is applied in the direction of infrastructure engineering, excavation, construction, etc., can solve the problems of long construction period, high cost, cumbersome construction procedures of foundation pit passing through corridors, etc. The effect of reducing the quantity and shortening the project duration

Inactive Publication Date: 2020-12-18
POWERCHINA HUADONG ENG COPORATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, before the foundation pit crossing construction, it is necessary to carry out separate pile foundation underpinning construction for the corridor pile foundation in advance, resulting in cumbersome construction procedures, high cost and long construction period for the foundation pit crossing the corridor.

Method used

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  • Foundation pit supporting structure serving as corridor underpinning pile foundation and construction method of foundation pit supporting structure
  • Foundation pit supporting structure serving as corridor underpinning pile foundation and construction method of foundation pit supporting structure
  • Foundation pit supporting structure serving as corridor underpinning pile foundation and construction method of foundation pit supporting structure

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Embodiment Construction

[0038] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the preferred embodiments of the present invention will be described below in conjunction with specific examples, but it should be understood that the accompanying drawings are for illustrative purposes only, and cannot be interpreted as an explanation of this patent. Restrictions; In order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, some known structures and their descriptions in the drawings may Omissions are understandable. The positional relationship described in the drawings is for illustrative purposes only, and should not be construed as a limitation on this patent.

[0039] In order to ensure the construction safety of foundation pit excavation passing through the corridor structure vertically or obliquely, th...

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Abstract

The invention provides a foundation pit supporting structure serving as a corridor underpinning pile foundation and a construction method of the foundation pit supporting structure. The foundation pitsupporting structure comprises foundation pit fender piles, an underpinning bearing platform, underpinning pile foundations, a grouting reinforcement body, a concrete supporting structure, steel latticed columns, stand column piles and an existing corridor pile foundation, wherein the underpinning pile foundations are arranged at the two sides of the existing corridor pile foundation; the underpinning pile foundation at the side adjacent to the foundation pit is also used as a foundation pit fender pile, and the underpinning pile foundation at the side deviating from of the foundation pit isindependently arranged; and annular notches and radial embedded steel bars distributed in a quincunx shape are arranged on the outer surface of the corridor pile foundation, and additional longitudinal steel bars and additional annular steel bars are arranged at the outer side of the corridor pile foundation. The foundation pit supporting structure constructed through the method is convenient to construct and organize and low in construction cost, and meanwhile the safety control requirement of a corridor structure is met.

Description

technical field [0001] The invention relates to the technical field of foundation pit support engineering, in particular to a foundation pit support structure which doubles as a corridor underpinning pile foundation and a construction method thereof. Background technique [0002] With the rapid development of the national economy and the continuous acceleration of urbanization, the development and utilization of urban underground space has become an important way for urban sustainable development, especially the development and utilization of public underground space represented by rail transit and municipal tunnel construction. It is an important way to further improve the urban comprehensive transportation system. At present, the open-cut method is the mainstream construction method for urban rail transit and municipal tunnel construction, but how to reasonably control the safety risks of adjacent buildings and structures brought about by open-cut foundation pit constructi...

Claims

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Application Information

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IPC IPC(8): E02D17/04E02D27/12E02D27/14
CPCE02D17/04E02D27/12E02D27/14
Inventor 甘鹏路金威闫自海何斌杰沈碧辉熊松邱土兴
Owner POWERCHINA HUADONG ENG COPORATION LTD
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