Unloading type combined retaining structure and construction method thereof

A technology of retaining structure and unloading plate, which is applied in basic structure engineering, excavation, sheet pile wall, etc., can solve the problems of inability to construct pile anchor support, high internal support cost, and long construction period.

Pending Publication Date: 2021-02-05
JIAN YAN FOUND ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to improve the technical problems of pile-anchor support that cannot be constructed due to external constraints in the foundation pit support project,

Method used

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  • Unloading type combined retaining structure and construction method thereof
  • Unloading type combined retaining structure and construction method thereof
  • Unloading type combined retaining structure and construction method thereof

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Embodiment Construction

[0101] The following is attached Figure 1-18 The application is described in further detail.

[0102] The embodiment of the application discloses an unloading combined retaining structure and a construction method thereof. The unloading combined retaining structure includes two schemes:

[0103] refer to Figure 1-Figure 10 , the components included in scheme 1 are: support pile or underground diaphragm wall 1, unloading plate support pile 2, support pile top connecting beam 3, unloading plate 4, unloading plate longitudinal connecting beam 5, unloading plate transverse The support beam 6, the backfill soil 10 on the top of the unloading plate, the pile top support member 11, the outer temporary support member 12 and the protective surface 13 between the piles.

[0104] The supporting piles or the underground diaphragm wall 1 are arranged along the outside of the outer edge of the underground structure, and the line connecting the center points of each component is paralle...

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Abstract

The invention relates to an unloading type combined retaining structure and a construction method thereof. The unloading type combined retaining structure is divided into two types, wherein one type is a combined retaining structure jointly formed by supporting piles, unloading plate supporting piles, supporting pile top connecting beams, unloading plates, longitudinal connecting beams, transversesupporting beams, plate top backfill soil and other members; and the second structure is a combined retaining structure jointly formed by the supporting piles, the supporting pile top connecting beams, the unloading plates, the longitudinal connecting beams, ribbed beams or ribbed plates, the longitudinal supporting beams, reinforcing waist beams, the plate top backfill soil and other members. According to the unloading type combined retaining structure, the unloading effect of the unloading plates is fully utilized, the soil pressure acting on the supporting structure is effectively reduced,and the foundation pit supporting structure can be formed without occupying the space outside a red line, without implementing an anchor rod on the outer side of a foundation pit and without arranging a support inside the foundation pit. The unloading type combined retaining structure is clear and definite in stress, reliable in quality and high in construction speed, can greatly wide the application range of the supporting and retaining type supporting and retaining structure, and can replace an inner supporting and retaining structure under partial conditions.

Description

technical field [0001] The application relates to the fields of design and construction of geotechnical engineering foundation pits and slope supports, and in particular relates to an unloading combined retaining structure and a construction method thereof. Background technique [0002] In the actual foundation pit support engineering, there are often certain restrictive conditions, such as: there are existing or to-be-built underground structures, obstacles, etc. in the adjacent parts of the foundation pit; Layers (with water-proof curtains), anchor bolts cannot be implemented or are difficult and risky to implement; local laws and regulations stipulate that the support structure must not exceed the red line of the land. The above circumstances make it impossible to implement the anchor-stayed retaining structure, and the use of single-row cantilever piles and double-row piles for support is difficult to meet the requirements of foundation pit stability and deformation, and...

Claims

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Application Information

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IPC IPC(8): E02D17/04E02D17/20E02D5/22E02D5/74
CPCE02D5/22E02D5/74E02D17/04E02D17/20E02D17/207
Inventor 张震高文生张东刚李帅谷二永唐伟王磊赵壁
Owner JIAN YAN FOUND ENG
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