Working platform for rapidly reinforcing hydraulic reclamation super-soft soil foundation and construction method

Abstract

The invention discloses a working platform for rapidly reinforcing a hydraulic reclamation super-soft soil foundation and a construction method. A bearing platform is formed by a piece of plastic woven cloth, an earthwork standard room and sand, the plastic woven cloth is paved on the surface of the super-soft soil foundation, the earthwork standard room is paved on the plastic woven cloth, and holes in the middle of the earthwork standard room are filled with the sand. Small holes are drilled in sheets of the earthwork standard room in advance so as to improve the capacity of horizontal drainage. The method for reinforcing the soft soil foundation by a construction platform for the hydraulic reclamation super-soft soil foundation disclosed by the invention comprises the technical steps of paving the plastic woven cloth and the earthwork standard room, paving a sand cushion, connecting horizontal drainage pipes, paving geotechnical cloth and a vacuum film, carrying out vacuum preloading and the like. The working platform solves the technical problem that people and construction machinery cannot walk freely on the super-soft soil foundation; moreover, the method is simple and convenient in operation, obvious in treatment effect and low in cost, and is an economical and practical soft soil foundation treatment method.

Description

technical field [0001] The invention relates to a foundation treatment method, in particular to a working platform and a construction method for rapid reinforcement of supersoft soil foundation by dredging. Background technique [0002] The rapid economic development of my country's coastal areas, but the shortage of land resources. In order to meet the needs of development, large-scale land reclamation projects have been carried out in coastal areas. Most of the new dredged fill in my country is flow mud or floating mud with almost zero strength, which is commonly called super soft soil in engineering circles. The characteristics of dredger-filled ultra-soft soil are extremely complex, mainly manifested in large under-consolidation characteristics and compressibility, high clay content, fine particles, zero strength, and the overall state of flow, which has caused difficulties in reinforcement treatment construction. [0003] Before the present invention, the method of la...

AI Technical Summary

Problems solved by technology

The shortcoming of this method is: (1) does not form integral, firm construction platform

Workers can stand on the pontoon to operate, but when walking in the hollow area between the pontoon, it is necessary to make a 2m×2m floating board with rubber foam board and bamboo plywood, and transport materials through the floating board. The weight is limited, the process is cumbersome, and the progress is slow

(2) The installation of drainage boards is a manual operation, and the construction machinery cannot be used frequently, and the efficiency is low

(3) The column used for fixing is easy to pierce the vacuum membrane, causing air leakage

(4) Although the corrugated pipe is a semi-rigid and semi-flexible material, the ultra-soft soil for dredging filling is highly compressible and can undergo large deformation. Stress concentration will occur at the connection of the drainage pipe, which will affect the transmission of vacuum.

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