'Short-distance overload vacuum precompression and dynamic water-drainage consolidation united method' soft foundation processing method

Abstract

A ''short-range overloading vacuum prepressing---dynamic discharging consolidation combination method'' to dealing with the soft soil ground foundation, its features are : overloading prepressing the vacuum membranes of conventional vacuum prepressing method with covering water; proceeding the settlement observation to each settlement observation points according the vacuum prepressing operating rules, continuing prepressing 5~10 days after the prepressing settlement above 80% of calculate settlement, then stopping the water overloading vacuum prepressing after ensuring stable completely; removing the vacuum membrane and sun-curing 1~2 days, then proceeding the dynamic dewatering consolidation to eliminating the stored water in sand cushions which is leaved when overloading vacuum prepressing rapidly, then dynamic consolidation or roller compaction after the water level below 1.5m. Its beneficial effects are: it can eliminate the water in muck soil during a short time and enhance the consolidation degree; it makes the skin soil layer get the greatest density, meets the requirements of load bearing capacity and rigidity rapidly and prevents rebound phenomenon; it shortens the construction period and lowers the costs and applies to large area project filling soil recently which has large thickness saturated soft soil particularly.

Description

Technical field: [0001] The invention relates to construction engineering technology, and is a ground treatment method, specifically, a soft ground treatment method of "short-range overload vacuum preloading-dynamic drainage consolidation combined method". Background technique: [0002] In building construction, the treatment of soft soil foundations has always been a headache and troublesome thing. Generally, when encountering soft soil foundations, the filling soil for preloading is usually used as the overload weight, and this existing treatment method, not only has problems in effect, but also takes a long time, especially it is difficult to adapt to the soft soil foundation treatment project with deep underlying silt and silty soil in the large-area backfill site that needs rapid reinforcement. Invention content: [0003] The purpose of the present invention is to provide a "short-range overload vacuum preloading-power drainage consolidation combined method" with shor...

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Problems solved by technology

[0002] In building construction, the treatment of soft soil foundations has always been a headache and troublesome thing. Generally, when encountering soft soil foundations, the filling soil for preloading is usually used as the overload weight, and this existing treatment method, not only has problems in effect, but also takes a long time, especially it is difficult to adapt to the soft soil foundation treatment project with deep underlying silt and silty soil in the large-area backfill site that needs rapid reinforcement.

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