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Deep foundation clearing construction method for deep foundation pit near subway

A construction method and technology of deep foundation pits, applied in infrastructure engineering, excavation, filling, etc., can solve the problems of increasing subways, adverse effects of tunnels, soil disturbance, vibration, and loud noise in tunnels, and achieve protection of road surfaces and subways Tunnel, the effect of reducing soil disturbance

Pending Publication Date: 2021-08-31
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The old foundation removal construction uses the pickaxe machine to remove the old foundation. The vibration and noise are too large, which has a great impact on the surrounding urban main roads, subway tunnels and the surrounding environment. Negative Effects

Method used

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  • Deep foundation clearing construction method for deep foundation pit near subway
  • Deep foundation clearing construction method for deep foundation pit near subway
  • Deep foundation clearing construction method for deep foundation pit near subway

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Experimental program
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Embodiment Construction

[0034] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways than those described here, so the present invention is not limited by the specific embodiments disclosed below.

[0036] In the deep foundation clearing construction in the deep foundation pit near the subway, in order to ensure the safety of the foundation pit, the soil layer on the deep foundation needs to be excavated. of construction waste. After the entire foundation has been demolished and cleaned, the undisturbed soil shall be used for backfilling and compaction, and then the pile foundation enclosure shall be constructed.

[0037] There is f...

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PUM

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Abstract

The invention discloses a deep foundation clearing construction method for a deep foundation pit near a subway. The method comprises the following steps of setting out and positioning an underground foundation and an enclosure structure of an old building, and digging a groove along a marked part of anew project enclosure structure; in the groove, adopting a full-hydraulic walking type pile machine for conducting hole jumping meshing rotary cutting clearing construction on an old foundation of an underground diaphragm wall area close to one side of a subway tunnel; reinforcing an obstacle clearing hole generated by clearing construction with a filling material; after backfilling of the obstacle clearing hole is completed, constructing an underground diaphragm wall close to one side of the subway tunnel; and after the underground diaphragm wall close to one side of the subway tunnel is constructed, clearing and backfilling old foundation slabs and old engineering piles, influencing the construction of the new project enclosure structure, at other parts. By the adoption of the full-hydraulic walking type pile machine hole jumping meshing rotary cutting clearing construction technology, the obstacle clearing hole can be backfilled in time, surrounding soil disturbance is reduced, and surrounding road surfaces and subway tunnels are effectively protected.

Description

technical field [0001] The invention relates to a deep foundation clearing construction method near a subway deep foundation pit, which is suitable for deep foundation clearing construction near subways or pipelines with high protection requirements. Background technique [0002] In the deep foundation clearing construction of the deep foundation pit of the prior art, earth excavation is required before the construction of the pile foundation enclosure, and the old foundation is broken and cleared. Due to the deep buried depth of the old foundation, a special construction plan will be prepared and expert demonstration will be organized if the excavation depth exceeds 5m. It not only increases the construction cost, but also prolongs the construction period. The old foundation removal construction uses the pickaxe machine to remove the old foundation. The vibration and noise are too large, which has a great impact on the surrounding urban main roads, subway tunnels and the s...

Claims

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Application Information

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IPC IPC(8): E02D17/02E02D17/04E02D5/18E02D5/46E02D17/18E02D31/00
CPCE02D17/02E02D17/04E02D5/18E02D5/46E02D17/18E02D31/00
Inventor 徐勇陈晨陈新喜段涛李赟张琨董鑫刘诗宇郭磊梁科文邱勇朱星宇李超孙杰张峰刘得雄李士豪余少乐吴振东
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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