Soft soil foundation treatment device and foundation treatment construction method

Abstract

The invention provides a soft soil foundation treatment device, which belongs to the technical field of foundation treatment. The technical solution is: a soft soil foundation treatment device, including a spud can, on which a pile tube is arranged and sinks into the ground along with the spud can; There is a water filter hole on the top, and the upper end of the casing is connected to the pumping device through the drainage pipe; it also includes a grouting pipe, the upper end of the grouting pipe is connected to the grouting system, and the other end penetrates into the casing; through the spud shoe and The pile tube forms the pile foundation hole, and the gap between the casing and the pile tube is filled into a sand well. The composite pile foundation is drained and consolidated by using the filter hole at the lower end of the casing and the pump, and then the grouting pipe is inserted, and the casing is pulled out to carry out Grouting to form a composite composite pile foundation. The beneficial effect of the present invention is that: the present invention combines two soft soil foundation treatment modes of drainage consolidation treatment and composite pile foundation treatment, so that the soft soil foundation treatment is economical and efficient, and the foundation treatment quality is improved.

Description

technical field [0001] The invention relates to the field of foundation treatment, in particular to a soft soil foundation treatment device. Background technique [0002] At present, the treatment of soft soil foundation usually adopts drainage consolidation and other treatment methods, or composite pile foundation. Drainage consolidation usually adopts plastic drainage belts, bagged sand wells and other treatment methods, and composite pile foundations mostly use high-pressure rotary jetting piles, mixing piles and other treatment methods; in the prior art, there are also treatments using geotextile bag grouting or vacuum bagging However, usually one of the above treatment methods is usually selected on site, such as using drainage consolidation alone to treat soft soil foundation, the construction period is long, the treatment effect is difficult to guarantee, sand wells and plastic drainage belts cannot be fully utilized, and resources are wasted; Pile foundation, the be...

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Problems solved by technology

[0004] In view of the above-mentioned problems in the prior art, the object of the present invention is to provide a soft soil foundation treatment device and a foundation treatment construction method. The present invention combines the advantages of drainage consolidation, composite piles and pocket expansion, and optimizes the construction process , using sand wells to fill sand, avoiding the problems of cumbersome sand filling and long-term instability of sand wells penetrating the formation when bagged sand wells are used to treat soft soil strata. Processing speed, and make full use of the sand in the sand well, the quality of the pile after grouting is greatly improved, and the strength of the composite pile foundation is much greater than that of pure cement slurry, so that the coordination of the bearing capacity of the pile and soil can be fully exerted, and the foundation can be effectively improved. Bearing capacity; and due to the existence of composite piles, the time of drainage consolidation can be reduced according to the demand, and the construction efficiency can be improved; according to the effect of drainage consolidation, the orderly grouting into piles in batches can effectively control uneven settlement; at the same time, due to The caliber of the sand well of the present invention is relatively small, and the construction machinery and construction methods adopted are relatively simple and economical

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