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A method for treating collapsible loess foundation with controllable presoaking water

A technology of collapsible loess and pre-soaking water, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of difficult to control the flooding range and flooding amount, small demand for personnel, long flooding time, etc., to save piles The effect of long, cost saving and shortening construction period

Active Publication Date: 2021-05-04
XIAN UNIV OF SCI & TECH
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Problems solved by technology

This method does not require special or large-scale equipment, requires less personnel, and has a good treatment effect, but there are still problems such as long immersion time, large water consumption, and difficulty in controlling the immersion range and amount.

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  • A method for treating collapsible loess foundation with controllable presoaking water
  • A method for treating collapsible loess foundation with controllable presoaking water
  • A method for treating collapsible loess foundation with controllable presoaking water

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Embodiment Construction

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0033] Refer to attached Figure 1-4 Shown, a kind of controllable presoaking water treatment method for collapsible loess foundation, comprises the following steps:

[0034] S1. Determine the layout form of plain concrete piles: by calculating the upper load, considering the engineering geological conditions and building types of the site, involving pile foundations, determine the pile hole positions of plain concrete piles, and carry out excavation and drilling;

[0035] S2. Determine the layout of the soaking holes: calculate the volume of the soaked loess and the amount of water soaked according to the depth and radius of the required treatment, and determine the hole positions of the soaking holes;

[0036] Specifically, when...

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Abstract

The invention discloses a controllable pre-soaking method for treating collapsible loess foundations. When treating collapsible loess foundations, the water-soaking range and the required water-soaking range are calculated according to the known required collapsible elimination range. Determine the layout of the soaking holes, and use the soaking holes to soak the collapsible loess foundation. After the soaking is completed, plain concrete piles are applied to form a composite foundation. The foundation treatment method in the present invention can not only effectively solve the problems of difficult control of the water soaking range and water soaking amount when the original presoaking water method is used to treat collapsible loess foundations, but also solve the problem that in large thickness collapsible loess layers with low water content, DDC At the same time, when the controllable pre-soaking water is used for foundation treatment, the pile foundation can be directly constructed after the immersion is completed, without waiting for the water to dissipate, and without re-drilling to construct the cast-in-place pile, which can effectively Save time and cost.

Description

technical field [0001] The invention relates to the field of foundation treatment, in particular to a controllable presoaking method for treating collapsible loess foundations. Background technique [0002] my country's loess area is large and widely distributed, about 640,000 km 2 , accounting for 6.3% of my country's land, mainly distributed in the middle reaches of the Yellow River Basin, most of which are collapsible loess. In recent years, with the development of Northwest China, various types of infrastructure facilities are increasing. In the process of developing various infrastructures, it is inevitable to carry out building construction activities on loess land. In the treatment of large-thickness collapsible loess foundation with low moisture content, due to the extremely low moisture content of the soil layer, compaction piles cannot be used for treatment, and the immersed tube method pollutes a lot, and in the static pressure immersed tube construction, the st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10E02D5/36
CPCE02D3/10E02D5/36E02D2250/003
Inventor 郅彬魏平平张辉王小婵任毅龙熊凯成李曾悦韩晓雷
Owner XIAN UNIV OF SCI & TECH
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