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Ground foundation delay consolidation treatment method

A treatment method and foundation technology, applied in infrastructure engineering, construction, etc., can solve problems such as extended construction period, high construction cost, and low engineering performance-to-cost ratio, and achieve the effect of shortening construction period and reducing construction cost

Inactive Publication Date: 2004-03-03
CHINA CIVIL ENG CONSTR CORP
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Among them, shallow treatment methods such as cushioning and replacement cannot deal with deep and weak foundations; although drainage consolidation methods can deal with deep and weak foundations, and the cost is low, there are problems such as preloading or placement treatment, and sometimes it even takes a long time. In addition, the foundation will have a large degree of settlement during the construction period, which will undoubtedly prolong the construction period and increase the amount and cost of the project; gravel piles, sand piles and other granular piles have the disadvantages of difficult control of construction quality and high cost. problems, and its engineering performance-to-cost ratio is not high; while composite foundation treatment methods such as mixing piles and powder-sprayed piles can obtain good engineering performance, they also have disadvantages such as high cost and low engineering performance-to-cost ratio, so their application range subject to certain restrictions

Method used

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Embodiment Construction

[0012] The traditional foundation treatment technology to reduce the post-construction settlement of the foundation is mainly divided into two categories: accelerating the drainage and consolidation process of the foundation and reinforcing the foundation. As we all know, the foundation will generate excess pore water pressure inside under the action of external loads, and the foundation soil will drain and consolidate around under this pressure. At this time, the excess pore water pressure will gradually dissipate and the effective stress will gradually increase, and the foundation will gradually After being compacted, the strength of the foundation soil increases gradually, and the bearing capacity gradually increases. At the same time, the surface will gradually subside, and the deformation modulus of the foundation soil will gradually increase until it reaches a stable state, that is, the gradual change when the excess pore water pressure dissipates to zero. process will st...

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Abstract

A delayed consolidation method for foundation or road bed features that a ring of vertical impervious curtain wall is built surrounding the foundation and an horizontal impervious linked with said virtical impervious curtain wall in sealing form is built up under building. Its advantages are low cost, short period, and damage to foundation earth.

Description

technical field [0001] The invention relates to a ground treatment method in the field of civil engineering, in particular to a ground delay consolidation treatment method. Background technique [0002] With the rapid development of social economy, civil engineering has put forward new requirements for the performance of the foundation, that is, from the past focusing on the strength of the foundation soil and the bearing capacity of the foundation, it has changed to the requirement of the foundation under the action of external loads. Settlement is strictly controlled. Especially in recent years, the construction speed of my country's high-speed railways, expressways and railway passenger dedicated lines has been accelerating. Because the project has very strict requirements on the settlement of the subgrade after construction, and usually the lines span a wide area and the project volume is huge, so The problem of settlement control on weak foundations is particularly prom...

Claims

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Application Information

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IPC IPC(8): E02D27/30
Inventor 刘远锋
Owner CHINA CIVIL ENG CONSTR CORP
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