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Supporting system with unloading and weight increasing effects and construction method thereof

A construction method and system technology, applied in the field of underground foundation pit engineering and slope support, can solve the problems of low construction efficiency and high construction cost of foundation pits

Pending Publication Date: 2021-06-04
CHINA RAILWAY SHANGHAI DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional foundation pit or slope design does not allow excavated earthwork to be piled up around the foundation pit; large-area foundation pit excavation needs to be supported, resulting in high construction costs and low construction efficiency

Method used

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  • Supporting system with unloading and weight increasing effects and construction method thereof
  • Supporting system with unloading and weight increasing effects and construction method thereof
  • Supporting system with unloading and weight increasing effects and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Combining figure 1 and figure 2 As shown, the support system with unloading and weight-increasing functions in this embodiment includes a vertical support structure 1 , a lateral unloading and weight-increasing structure 2 , and a waist beam 3 . The vertical support structure 1 in this embodiment adopts H-shaped steel enclosure piles, and the horizontal unloading and weight-increasing structure adopts H-shaped steel.

[0033] Among them, the vertical support structure 1 is arranged on the side of the pit wall of the foundation pit or slope 7 as the support object to support the foundation pit or slope 7, and the vertical support structure 1 is Resist the inward force of the external soil on both sides of the foundation pit or slope 7, and avoid overturning. Such as image 3 As shown, the vertical support structures 1 are evenly spaced along the extension direction of the side of the foundation pit or slope 7 .

[0034] The horizontal unloading weight-inc...

Embodiment 2

[0049] Embodiment 2: Compared with Embodiment 1, this embodiment differs in that: Figure 6 As shown, in this embodiment, the vertical support structure 1 adopts prefabricated piles, the horizontal unloading weight-increasing structure 2 adopts prefabricated piles, and the waist beam 3 is a cast-in-place structure. Pouring crown beam 6. Wherein, the waist beam 3 is a horizontal member connected to the protruding part of the lateral unloading weight-increasing structure 2 . In this embodiment, the waist beam 3 and the crown beam 6 of the cast-in-place structure are used as the connection structure, and the vertical support structure 1 and the lateral unloading weight-increasing structure 2 are connected to form an overall support system, which can ensure sufficient structural strength.

[0050] When implementing the above-mentioned embodiments: the structures of the vertical support structure 1, the lateral unloading structure 2 and the waist beam 3 can be selected according t...

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Abstract

The invention relates to the technical field of underground foundation pit engineering and slope supporting, in particular to a supporting system with unloading and weight increasing effects and a construction method thereof, and is characterized in that the supporting system comprises a vertical supporting structure, a transverse unloading and weight increasing structure and a connecting structure. The vertical supporting structure is used for supporting the side edge, subjected to pressure of an outer side soil body, of a supported object, the transverse unloading and weight increasing structure is arranged in the height direction of the vertical supporting structure and located below the elevation of the supported object, and one end of the transverse unloading and weight increasing structure is arranged in the outer side soil body of the side edge. The transverse unloading and weight increasing structure is connected with the vertical supporting structure through the connecting structure to form an integral supporting system. The supporting system has the advantages that the construction efficiency is high, the environmental influence is small, the economical efficiency is good, materials can be recycled, the loading bearing capacity is high, the structural system fully utilizes the self weight of the soil body, certain self-stability is achieved, and the anti-overturning stability of the supporting structure is good.

Description

technical field [0001] The invention relates to the technical field of underground foundation pit engineering and slope support, in particular to a support system with unloading and weight-increasing functions and a construction method thereof. Background technique [0002] With the acceleration of urbanization, geotechnical engineering technology continues to develop. However, traditional foundation pit or slope design does not allow excavated earthwork to be piled up around the foundation pit; large-area foundation pit excavation needs to be supported, resulting in high construction costs and low construction efficiency. Contents of the invention [0003] The object of the present invention is to provide a support system with unloading and weight-increasing effect and its construction method according to the deficiencies of the above-mentioned prior art. By setting transverse members at a certain depth of the vertical support structure, appropriate The surcharge changes...

Claims

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Application Information

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IPC IPC(8): E02D17/04E02D17/20G06F30/13G06F30/20G06F119/14
CPCE02D17/04E02D17/205E02D2300/0029G06F30/13G06F30/20G06F2119/14
Inventor 冯宝才李健赵志国呼志明周萌赵旭伟周军海曹勇张文龙
Owner CHINA RAILWAY SHANGHAI DESIGN INST GRP
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