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Rapid unearthing method for deep foundation pit provided with inner support

A deep foundation pit, fast technology, applied in excavation, infrastructure engineering, construction, etc., can solve problems such as easy formation of water accumulation, affecting excavation efficiency, etc., to reduce the impact of rainy season, save excavation period, and improve excavation efficiency. Effect

Pending Publication Date: 2022-05-06
CHINA CONSTR EIGHT ENG DIV CORP LTD
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Problems solved by technology

The excavation of the down-dug channel, considering the influence of the rainy season, is easy to form water accumulation, which seriously affects the efficiency of excavation

Method used

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  • Rapid unearthing method for deep foundation pit provided with inner support
  • Rapid unearthing method for deep foundation pit provided with inner support

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Embodiment Construction

[0023] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0024] refer to figure 1 and figure 2 , the embodiment of the present invention provides a kind of rapid excavation method provided with internal support deep foundation pit, comprising steps:

[0025] Step 1: Determine the construction area, and divide the foundation pit area into the first construction area 1 and the second construction area 2.

[0026] Taking the example project of a children's medical center in Guangxi as an example, the foundation pit support of...

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Abstract

A rapid unearthing method for a deep foundation pit provided with inner supports comprises the steps that a first construction area and a second construction area are divided, after the last inner supporting beam at the bottom of the foundation pit is constructed, the inner supporting beams at least comprise opposite supporting beams located in the middle of the foundation pit, a bridge crossing plate is erected on the opposite supporting beams, earthwork at the bottom of the foundation pit except the position under the opposite supporting beams is excavated, and the first construction area and the second construction area are constructed. The method comprises the following steps: carrying out large-area earthwork excavation and unearthing in a first construction area, carrying out mechanical excavation to reach a position above a base elevation, then carrying out manual excavation and leveling to reach the base elevation, carrying out earthwork excavation and unearthing in a second construction area after earthwork construction in the first construction area is completed, backfilling an unearthing lane in the second construction area, and carrying out manual soil cleaning in the second construction area. According to the construction method, the bridge crossing plate is arranged, passing is carried out from the high position, key lines are constructed preferentially, the influence of rainy seasons is reduced, the earth excavation efficiency is improved, and the excavation construction period is shortened through the arrangement of the bridge crossing plate, passing is carried out from the high position, and key lines are constructed preferentially.

Description

technical field [0001] The invention relates to the technical field of foundation pit construction engineering, in particular to a rapid excavation method for deep foundation pits provided with inner supports. Background technique [0002] With the development of the construction industry, the scale of foundation pit engineering is rapidly expanding, and the excavation depth of foundation pits is getting deeper and deeper. Deep foundation pits usually adopt a multi-channel internal support system. [0003] Since the internal support of the foundation pit has formed a closed frame, and the main building part inside the foundation pit is the key route of construction, it is necessary to dig a channel under the inner support beam before excavating the large area. Considering the impact of the rainy season, it is easy to form water accumulation when excavating through a down-dug channel, which seriously affects the efficiency of excavation. Contents of the invention [0004]...

Claims

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Application Information

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IPC IPC(8): E02D17/02E02D17/04
CPCE02D17/02E02D17/04
Inventor 黄之鸣李海银黄永铭林冲玉宏韬
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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