Deep foundation pit construction method

A construction method and deep foundation pit technology, which is applied in infrastructure engineering, excavation, construction, etc., can solve problems such as the narrow and small working space of earthmoving machines, and achieve the effect of improving excavation efficiency and increasing input

Inactive Publication Date: 2019-06-21
LIAONING TECHNICAL UNIVERSITY
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  • Abstract
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  • Claims
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Problems solved by technology

During the excavation of existing foundation pits, layered excavation is generally adopted, and the support structure of the layer is constructed after excavation of each layer. Due to the existence of the support structure of this layer, the working space of the earthmoving machine becomes narrow

Method used

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Embodiment Construction

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0020] Such as figure 1 As shown, the invention provides a kind of deep foundation pit construction method, comprises the following steps:

[0021] Step 1: Construction of anti-seepage wall 1 along the ground around the foundation pit;

[0022] Step 2: Excavate the earthwork for accommodating the first reinforced concrete support 2 on the excavation surface of the foundation pit, and construct the first reinforced concrete support 2, and connect the first reinforced concrete support 2 and the cut-off wall 1 through steel bars;

[0023] Specifically, th...

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Abstract

The invention belongs to the technical field of deep foundation pit engineering, and discloses a deep foundation pit construction method which comprises the following steps: firstly, an anti-seepage wall is constructed along the underground around a foundation pit; secondly, earthwork is excavated on the excavation face of the foundation pit, and a first reinforced concrete support is constructed;thirdly, a first layer of earthwork is excavated from the middle to the two sides, and a first layer of foundation pit support is arranged; fourthly, after the first layer of earthwork is excavated out of the working face of an excavator, a second layer of earthwork continues to be excavated towards the two sides in the middle of the first layer of earthwork, and a second layer of foundation pitsupport is arranged; fifthly, after excavation of the first layer of earthwork is completed, the second layer of foundation pit support is dismantled; sixthly, after the second layer of earthwork is excavated out of the working face of the excavator, a third layer of earthwork continues to be excavated towards the two sides in the middle of the second layer of earthwork, and a third layer of foundation pit support is arranged; seventh, the steps are repeated until excavation of the foundation pit is completed. The problem that in the deep foundation pit excavation process, due to a supportingstructure, the work space of an earthwork excavator becomes narrow is solved.

Description

technical field [0001] The invention belongs to the technical field of deep foundation pit engineering, and in particular relates to a deep foundation pit construction method. Background technique [0002] The construction of deep foundation pit engineering has the characteristics of uncertainty, complexity, variability and concealment. The construction area is relatively small, and the surrounding environmental factors are greatly affected, which leads to a very high probability of safety accidents. Due to the deep foundation pit The complexity and uncertainty of the deep foundation pit engineering, the problems encountered in the excavation process and the directions involved are becoming more and more extensive. [0003] Before excavation, the excavation plan should be determined according to the geological and hydrological data, combined with the conditions of the nearby buildings, and the waterproof and drainage work should be done well. If the excavation is not deep, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/00E02D17/04
Inventor 王金晓张彬
Owner LIAONING TECHNICAL UNIVERSITY
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