Method for reinforcing soft soil foundation through bionic drainage

Abstract

The invention belongs to the technical field of soft soil foundation treatment, and discloses a method for reinforcing a soft soil foundation through bionic drainage, a drainage vertical shaft device is used for conducting drainage reinforcement on the soft soil foundation, and the drainage vertical shaft device comprises a liquid storage tank, a drainage straight cylinder, a dialysis membrane and a supporting net; firstly, a vertical shaft is arranged according to the design of the drainage vertical shaft device, and soft soil is backfilled to the surface of a foundation after the drainage vertical shaft device is installed in the vertical shaft; then high-concentration imbibition liquid is poured into the liquid storage tank through the drainage straight cylinder, and water molecules in the soft soil foundation can enter the liquid storage tank through the dialysis membrane; after the liquid level in the drainage straight cylinder is stable and unchanged, the solution is extracted, and solute is added to enable the imbibition liquid in the liquid storage tank to keep high concentration; the operation is repeated until the liquid level in the drainage straight cylinder is not changed all the time, and drainage reinforcement of the soft soil foundation is completed. According to the method, the soft soil foundation can be effectively reinforced in different areas and different surrounding environments while economy, rapidness, energy conservation and safety are kept.

Description

technical field [0001] The invention belongs to the technical field of soft soil foundation treatment, and in particular relates to a method for bionic drainage and reinforcement of soft soil foundation. Background technique [0002] With the continuous development of my country's economy and urban construction, the demand for land in some coastal cities continues to expand, and the existing land resources can no longer meet the needs of the city's continued development. The land reclamation project has become the main land for coastal cities in my country and the world. means of development. In engineering, the dredger fill soil deposited by dredging fill mud near the seabed is usually used as the foundation of buildings. The soil consolidates very slowly under natural conditions, and it must be reinforced to meet the requirements of subsequent engineering construction. [0003] At present, the commonly used dredger-filled soil foundation reinforcement methods at home and ...

AI Technical Summary

Problems solved by technology

Among them, the surcharge preloading method has simple construction, low cost, and remarkable reinforcement effect. However, due to the low shear strength of the soft soil foundation, the filling rate of this method cannot be too fast, the construction efficiency is low, and the social and economic benefits are greatly affected. impact, and the process of stacking construction will have an impact on the surrounding environment

In contrast, the vacuum preloading method is convenient for construction, has little impact on the environment, has high operating efficiency, and has great economic and social benefits. However, the maximum load that can be applied by this method is only about 95kPa, and the effective reinforcement depth is small. Sometimes even It is necessary to carry out secondary reinforcement treatment on the foundation in some areas, and the effect is not good when dealing with dredged mud with extremely high moisture content and poor water permeability

Vacuum-surcharge combined method combines vacuum preload and surcharge preload, which can produce an equivalent load of 130kPa, and the reinforcement effect is better, but the reinforcement takes longer

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