Soft soil foundation consolidation method

A soft soil foundation and site technology, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of long cycle and poor effect, and achieve the effect of high-quality reinforcement

Inactive Publication Date: 2008-07-23
张志铁
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Problems solved by technology

[0003] The purpose of the present invention is to invent a soft soil foundation reinforcement method based on double vacuum preloading combined with electroosmosis to solve the problems of poor effect and long period when the existing vacuum preloading method is used to treat soft soil foundations.

Method used

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] As shown in Figures 1, 2, and 3.

[0019] A method for strengthening soft soil foundations, comprising the following steps:

[0020] 1. Low-level vacuum self-loading combined with preloading is used to reinforce the soft soil of the site.

[0021] Referring to Figure 1, first build cofferdam 1, insert plastic drainage board 2, lay vacuum horizontal pipe network 3, install vacuum system 5, blow mud seal layer 4, and mud seal layer thickness is 1.2-2.0m (to ensure that after the mud loses water and shrinks The thickness is about 0.8 ~ 1.5m), and the low vacuum preloading (self-loading joint) starts. Installing the vacuum system 5 refers to laying horizontal main pipes and branch pipes on the working surface of the site, plastic drainage boards are connected to branch pipes, branch pipes are connected to main pipes, main pipes are connected to wat...

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Abstract

The invention discloses a strengthening method for soft soil foundation, comprising that: a. the soft soil in the site is strengthened for the first time by low position vacuum self-weight combined preloading; b. the soft soil in the site is strengthened for the second time by the vacuum preloading electroosmosis method; c. the scove layer is strengthened by vacuum electroosmosis dewatering; and d. vibration rolling, leveling the site. The strengthening method for soft soil foundation is suitable for the strengthening engineering of the flowing mud, which mainly contains ultrafine particles and the consolidation coefficient is minimal, silt and mucky soil foundation, and particularly suitable for the site which needs high requirements of the strength and deformation, but highly susceptible and saturated soft clay, and super-soft foundation, which is not suitable to be strengthened by dynamic compaction, the strengthening method for soft soil foundation has the advantage of providing a high performance-price ratio processing method for the rapid, efficient, high-quality strengthening of the soft soil foundation.

Description

technical field [0001] The invention relates to an efficient and cost-effective deep-layer comprehensive reinforcement method for large-area dredging and dredging and reclamation sites, especially a kind of fluid mud, silt and silty soil foundation mainly composed of ultrafine particles and with a very small consolidation coefficient The reinforcement method is especially suitable for the reinforcement method of the site that requires high strength and deformation but the site is saturated soft clay with high sensitivity and the ultra-soft soil foundation that is not suitable for dynamic compaction by dynamic compaction. Specifically, it is a reinforcement method based on double Reinforcement method of soft soil foundation with vacuum preloading combined with electroosmotic method. Background technique [0002] As we all know, the vacuum preloading method has been widely used in my country since the 1980s. It is a mature and effective soft soil foundation treatment method, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/11E02D3/10E02D3/046
Inventor 张志铁
Owner 张志铁
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