Foundation pit roadbed backfilling structure

A technology for foundation pits and roadbeds, which is used in infrastructure engineering, underwater structures, roads, etc., can solve problems such as foundation pit collapse, and achieve the effects of increasing strength, increasing bearing resistance, and facilitating fixing.

Inactive Publication Date: 2020-04-21
常州市市政工程设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, subgrade filling materials are generally soil or gravel materials, which require a certain construction surface for layered paving and rolling. However, when backfilling foundation pits with small areas and large depths, if conventional filling materials and The method of paving and rolling can easily lead to the collapse of the foundation pit

Method used

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  • Foundation pit roadbed backfilling structure
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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0038] It is a foundation pit subgrade backfill structure disclosed by the present invention, such as figure 1 As shown, including the foundation pit 1, there is a concrete retaining wall 11 in the foundation pit 1 that is in conflict with each inner wall of the foundation pit 1, and the inner wall of the foundation pit 1 is reinforced, and the foundation pit 1 is filled with air bubble concrete 12, which is light in weight, Small bulk density, energy saving and environmental protection, can reduce the self-weight load on the existing underground structure roof or caps and other structures.

[0039] Such as figure 2 As shown, the cellular concrete 12 is paved with a steel-plastic geogrid 15, the length of the steel-plastic geogrid 15 is greater than the length of the foundation pit 1, and it embeds and locks the soil around the foundation pit 1, and the ste...

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PUM

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Abstract

The invention relates to a foundation pit roadbed backfill structure, and is applied to the technical field of building construction. The structure comprises a foundation pit, concrete retaining wallsare arranged on all inner side walls of the foundation pit, the foundation pit is filled with foamed concrete, a cement concrete subbase is poured on the foamed concrete, the two ends of the cement concrete subbase extend to the ground outside the foundation pit, and cement stabilized macadam is laid on the cement concrete subbase. The foundation pit roadbed backfill structure has the effect ofreducing the possibility of foundation pit collapse.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a foundation pit subgrade backfill structure. Background technique [0002] The foundation pit is an earth pit dug at the foundation design position according to the base elevation and foundation plane size. It is a temporary project, and its function is to provide a space for the foundation masonry to be carried out in accordance with the position specified by the design. With the development of the city, there are more and more cases of construction of subgrade and pavement at the backfilled foundation pit, such as reserved hoisting holes for rail transit, directional drilling working wells, pipe jacking caissons, and excavation of viaduct caps. [0003] At present, subgrade filling materials are generally soil or gravel materials, which require a certain construction surface for layered paving and rolling. However, when backfilling foundation pits with small area...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/00E01C3/04E02D17/18E02D29/02E02D5/76
CPCE01C3/00E01C3/04E02D5/76E02D17/18E02D29/02E02D29/0233E02D29/0275E02D2250/0023
Inventor 宋宇衡王颖成俞晓鹏赵亮
Owner 常州市市政工程设计研究院有限公司
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