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Combined vacuum preloading method foundation treatment construction method

A vacuum preloading method and construction method technology, which is applied in the fields of infrastructure engineering, soil protection, construction, etc., can solve problems such as land inaccessibility and construction difficulties, and achieve the effect of shortening the use time and requiring low surface bearing capacity

Inactive Publication Date: 2010-06-02
CHINA COMM CONSTR FIRST HARBOR CONSULTANTS
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Problems solved by technology

If only shallow treatment is carried out on the silt that has just been filled, the land after treatment will not meet the requirements for land use. If deep treatment is carried out, there will be difficulties in construction

Method used

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  • Combined vacuum preloading method foundation treatment construction method
  • Combined vacuum preloading method foundation treatment construction method
  • Combined vacuum preloading method foundation treatment construction method

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Embodiment Construction

[0016] The application of the construction method of the combined vacuum preloading method foundation treatment of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] The construction method of foundation treatment combined with vacuum preloading method of the present invention includes two construction processes of shallow layer vacuum preloading and deep layer vacuum preloading, the shallow layer vacuum preloading is carried out first, and then the deep layer vacuum preloading is carried out;

[0018] The construction process of the shallow vacuum preloading method includes laying woven fabrics and geotextiles on the foundation to be treated, laying plastic drainage boards, laying filter pipes, connecting filter pipes and drainage boards, laying three-dimensional geonets or geogrids, laying Plastic sealing film, vacuum pumping for 10 to 30 days;

[0019] After 10 to 30 days of shallow vacuum preloading treatment, the ...

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Abstract

The invention provides a combined vacuum preloading method foundation treatment construction method which comprises two construction processes: superficial layer vacuum preloading and deep layer vacuum preloading, wherein the superficial layer vacuum preloading is firstly carried out, and then the deep layer vacuum preloading is carried out. The superficial layer vacuum preloading method comprises the construction process that laying woven cloth or geotextile on foundation to be treated; arranging a plastic drain plate; laying a filter pipe connected with the drain plate; laying a three-dimensional geonet or geogrid; and laying a plastic sealing film connected with a vacuum pump for vacuum air exhaust. The deep layer vacuum preloading method comprises the construction process that blow filling or return filling a construction and drain pad layer on a surface layer treated by the superficial layer vacuum preloading; arranging the plastic drain plate; laying the filter pipe; laying the sealing film; and vacuum air exhaust. The method has the advantages that the construction method provides early stage treatment method and usage of new dredgerfill, saves organism materials such as wattleanddab, bamboo sheathing and the like, reduces the material transport pressure and pollution for the soil body and the environment, and little environmental constraint and ahead of construction period compared with the traditional one-step vacuum preloading method.

Description

technical field [0001] The invention relates to foundation treatment technology in the field of civil engineering construction, in particular to a foundation treatment construction method combined with vacuum preloading method, which is suitable for the construction field of silt, flow mud and silty soil using preloading drainage consolidation method, and is also suitable for recent Reinforcement of silt and flowing mud formed by dredging. Background technique [0002] Since the traditional vacuum preloading method was successfully applied in the late 1980s, a large number of engineering practices have proved that it is an effective method for strengthening soft soils, such as silt and silty soils. It is still the main foundation treatment technology for soft soil foundations. However, the traditional vacuum preloading method is a one-time vacuum preloading foundation treatment technology. For solving the newly formed dredged fill soil, its reinforcement effect is often not ...

Claims

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Application Information

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IPC IPC(8): E02D3/10
Inventor 尹广田张功新唐元松蔡波王克勤刘宏伟周宝江陈占锋李学艳韩彦丰吴亮葛安定李华明叶永锋
Owner CHINA COMM CONSTR FIRST HARBOR CONSULTANTS
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