High cutting slope advanced supporting construction method

A technology of advanced support and construction method, applied in excavation, foundation structure engineering, sheet pile wall and other directions, can solve the problems of high engineering investment, large cross-section size of supporting piles, large earth pressure, etc., to reduce engineering investment, material Economical, earth pressure reduction effect

Inactive Publication Date: 2010-01-13
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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Problems solved by technology

[0006] The purpose of this invention is to provide a kind of high cutting slope leading support construction method, by adopting a kind of more economical new leading supporting structure, aim to solve the excessive earth pressure applied on the high cutting slope leading supporting pile, The cross-sectional size of the support pile is too large, and the technical problem of high project investment

Method used

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  • High cutting slope advanced supporting construction method
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Embodiment

[0016] Example: see figure 1 figure 2 , before the excavation of the high slope, first excavate the advance support pile 1, and set a certain thickness of polystyrene foam cushion material 2 above the excavation surface on the side of the advance support pile, and then pour the pile body concrete, A new structure of polystyrene foam advanced support piles is formed, and the high slope is excavated after the advanced support structure reaches 70% strength. The polystyrene foam cushion material is a numerical test method to determine the optimal setting thickness of the polystyrene foam cushion material.

[0017] For dangerous high cut slopes, the advance support piles are excavated first, and a certain thickness of polystyrene foam cushion material (EPS) is installed on the side above the excavation surface of the advance support piles. The material type and thickness can be verified by numerical tests. Obtain (so as to determine its replacement setting thickness), then pour...

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Abstract

The invention relates to a high cutting slope advanced supporting construction method which is characterized in that: before digging a high cutting slope, an advanced supporting pile is dug and constructed firstly, polystyrene foam carpet material with a certain thickness is arranged above the digging surface of the backing side of the advanced supporting pile, and then a pile body concrete is poured, so as to form a novel structure of the advanced supporting pile with the polystyrene foam material, after the advanced supporting structure has 70 percent of intensity, the high cutting slope is dug; by adopting the self deformation of the polystyrene foam material (EPS), the soil pressure on the advanced supporting pile is reduced and the section size and reinforcing bars of the advanced supporting pile are optimized, thereby greatly reducing the construction investment of the high cutting slope advanced supporting structure and ensuring the whole stability and construction safety of the high cutting slope.

Description

technical field [0001] The invention relates to a construction method for infrastructure construction, in particular to a new construction method for advanced support of dangerous high cut slopes. Background technique [0002] In the process of infrastructure construction in the mountainous areas of western my country, it is often necessary to excavate side slopes, forming a large number of high-cut slopes. If the slope is cut improperly, or if the support is not timely after excavation, it will easily lead to deformation and damage of the high cut slope, and even evolve into a landslide, causing heavy property loss and casualties, and causing irreparable losses to the construction of the project. Such examples are not uncommon in the construction of infrastructure in western my country, especially in the construction of linear engineering (roads, railways), and they have become another major geological disease after landslides, collapses, mud-rock flows, and water damage. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D5/34
Inventor 何思明罗渝
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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