Annular deep foundation pit excavation construction method

A construction method and deep foundation pit technology, which can be used in excavation, foundation structure engineering, bridge materials, etc., can solve the problems of low construction efficiency of circular foundation pit excavation, and achieve the effects of improving excavation efficiency, saving engineering cost, and reducing length

Pending Publication Date: 2019-09-06
SHENZHEN GONGKAN GEOTECHN GRP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide an annular deep foundation pit excavation construction method, aiming to solve the problem of low efficiency in the excavation of annular foundation pits in the prior art

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  • Annular deep foundation pit excavation construction method
  • Annular deep foundation pit excavation construction method
  • Annular deep foundation pit excavation construction method

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[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0029] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0030] The same or similar reference signs in the drawings of this embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms "upper", "lower", "left", "right", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying ...

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Abstract

The invention relates to the technical field of deep foundation pit excavation construction, and discloses an annular deep foundation pit excavation construction method.The annular deep foundation pitexcavation construction method comprises the following steps that (1) a support pile,a plurality ofcolumn piles, and a plurality of trestle piles are separately constructed; (2) connecting beams areconstructed, and crown beams are constructed; (3), a trestle is constructed,a trestle deck is formed through pouring, the support pile, each of the trestle piles, and each of the column piles supportthe trestle deck respectively; (4), a reserved soil slope is excavated on a lower layer, the soil slope forms a slope surface, and the slope surface and the trestle deck are connected to form a jointramp; (5) the soil slope extends downward until earthwork is excavated to the bottom of a foundation pit; (6) the earthwork in the foundation pit is excavated and transported outward, the soil slope is gradually collected from bottom to top; and (7) the trestle is demolished. The soil slope earthwork can be formed by slope finishing,the soil slope is part of the excavation of the foundation pit, and the project cost is greatly saved; the earthwork excavation of the foundation pit is avoided, the excavation ramp is repeatedly built for multiple times, the unearthing efficiency is greatly improved, and the construction period is shortened.

Description

Technical field [0001] The patent of the invention relates to the technical field of deep foundation pit excavation and construction, in particular, to an annular deep foundation pit excavation construction method. Background technique [0002] In the process of excavation and construction of foundation pits, it is necessary to strictly follow the theory of time-space effects, adopt layered, segmented, and smooth excavation, and follow the principle of supporting and digging. [0003] In the ring-supported foundation pit, due to the unique force and internal force transmission mode of the ring brace, each ring brace must be completely closed to exert the force transmission effect of the sealed arch. Therefore, the earth excavation construction of the ring-supported foundation pit must be strict Follow each support to be completely enclosed before excavating the next layer of earthwork, namely: first excavate in layers to the design elevation of the support bottom, and then complete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/02E02D17/04E04G27/00
CPCE01D2101/24E02D17/02E02D17/04E04G27/00
Inventor 王志权雷斌李波洪明坚张国林周明佳周梅峰沙桢晖
Owner SHENZHEN GONGKAN GEOTECHN GRP
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