A composite dynamic drainage consolidation system and construction method applied to deep saturated soft soil foundation

Abstract

The invention provides a hybrid power drainage consolidation system composed of a vacuum shaft drainage system, a foundation hybrid consolidation system and a full compaction rolling system and a construction method. The bearing capacity of a foundation is remarkably improved, meanwhile, the effects of strong drainage, strong compaction, high kinetic energy, over pressure and the like are integrated, post-construction settlement of the saturated soft soil foundation can be effectively controlled, engineering cost can be reduced, and the construction period can be shortened; and meanwhile the treatment depth of the foundation is large, the foundation is good in reinforcement effect and remarkable in environmental protection effect, that is, vibration, noise, air pollution and the like are reduced, and the later maintenance charge is reduced.

Description

1. Technical field [0001] The invention belongs to the technical field of civil engineering construction, and more specifically relates to a drainage consolidation system and a construction method applied to deep saturated soft soil foundations, and is mainly suitable for drainage consolidation of deep saturated soft soil foundations with high groundwater levels in coastal areas deal with. 2. Background technology [0002] Saturated soft soil foundations are mainly distributed in the coastal areas along the river in eastern my country, and have the characteristics of low shear strength, high compressibility, large void ratio, high water content, and strong rheology. Rapid development, combined with the foundation treatment problems exposed during construction and use, my country's "Code for Design of Building Foundations" (GB50007-2011), "Technical Specifications for Building Foundation Treatment" (JGJ79-2012), "Code for Foundations of Port Engineering" ( JTS147-1-2010), etc....

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Problems solved by technology

Strengthening the in-situ foundation to improve the engineering characteristics of the foundation is the main trend of current research and application. The specific in-situ foundation treatment technology includes vacuum preloading method, dynamic compaction method, CFG pile, etc., but the above-mentioned single soft foundation treatment method or Improving the bearing capacity of the soft soil foundation is limited, or the actual reinforcement depth of the soft soil foundation cannot meet the design requirements, or the construction cost is too high, which cannot better solve the problem of reinforcement treatment of the saturated soft soil foundation with a deep soft underlying layer. Seeking a drainage consolidation method with good foundation treatment effect, short construction period, low comprehensive cost, and suitable for deep saturated soft soil foundation has become an important issue urgently needed to be solved by technicians in the field of geotechnical engineering.

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