Metro open cut pit horizontal soil body strengthening method

A soil reinforcement and foundation pit technology, which is applied in excavation, infrastructure engineering, construction, etc., can solve problems such as difficulty, high cost, and difficulty in meeting production needs, so as to achieve high work efficiency, reduce construction difficulty, and ensure reinforcement Effect

Inactive Publication Date: 2017-06-30
XIAOGAN QISIMIAOXIANG CULTURAL MEDIA
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The horizontal soil reinforcement of open excavation pits of subways is a problem that must be solved in subway construction. The quality of reinforcement directly determines the quality of subways. In the prior art, the method of horizontal soil reinforcement of open excavation foundation pits of subways is difficult and costly , it is difficult to meet the demand of production

Method used

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Embodiment 1

[0019] A method for reinforcing the horizontal soil of a subway open-cut foundation pit. The specific steps of the method for reinforcing the horizontal soil of a subway open-cut foundation pit are as follows:

[0020] S1: For the construction of drainage facilities, there is no obvious water-bearing strata in the excavation range of the foundation pit. Drainage is the main focus, and a temporary intercepting ditch of 0.4×0.5m is set at the edge of the pit groove of the top beam. A sump pit of 1.0×1.0×1.5m is set at 1.5m outside the section, and the engineering water, groundwater, soaking water, etc. in the foundation pit are introduced into the sump pit, and then the accumulated water is pumped away by an electric pump;

[0021] S2: Clear the obstacles at the bottom of the open-cut foundation pit, and use excavation machinery to remove the obstacles at the bottom of the foundation pit to facilitate the construction in the next step;

[0022] S3: Ramping the foundation of the...

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PUM

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Abstract

The invention discloses a horizontal soil reinforcement method for a subway open-cut foundation pit. The specific steps of the horizontal soil reinforcement method for a subway open-cut foundation pit are as follows: S1: construction of drainage facilities, S2: removal of obstacles at the bottom of the open-cut foundation pit Object, S3: Ramping the foundation pit foundation, S4: Surveying and mapping of the width and depth of the foundation pit, S5: Stock preparation for reinforcing steel bars, S6: Pouring reinforced concrete, S7: Surveying and mapping the reinforced concrete surface formed in the step S6 again, S8: Construction of piles, S9: construction of superstructure, the present invention first constructs drainage facilities, prevents excessive water accumulation, ensures unobstructed foundation pit, reduces construction difficulty, adopts high-pressure jet grouting, high work efficiency, and through vibration The stick removes the residual air bubbles in the concrete in time, improves the quality of concrete pouring, and ensures the reinforcement of the foundation pit. In the surveying and mapping of the width and depth of the foundation pit, at least 3 surveys and mappings are carried out, and the final value is the average value of the 3 surveys to ensure that the surveying and mapping the accuracy of the results.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a horizontal soil reinforcement method for open-cut foundation pits of subways. Background technique [0002] The arrival of the subway era has made us full of imagination for future travel and life. The subway is not only a means of transportation, but also a civilization and a way of life. The subway makes our way home more enjoyable, allowing us to have more time to enjoy life, and the complete supporting circle built by the subway will make our life more comfortable. Subway is a rapid and large-capacity urban rail transit mode that is gradually developed along the surface railway system. Its lines are usually laid in underground tunnels, and some are outside the city center, from underground to ground or The way of laying on the viaduct. Digging a tunnel underground is not an easy task and requires a huge amount of money and time, at least several years to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/02E02D17/04E02D19/08
CPCE02D17/02E02D17/04E02D19/08
Inventor 聂剑斌
Owner XIAOGAN QISIMIAOXIANG CULTURAL MEDIA
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