Quick reinforcing method and reinforcing device for super soft weak soil

Abstract

The quick reinforcing process for very soft soil includes the following steps: 1. spreading one or several layers of lattice, inserting water draining plastic plates or bagged sand wells into very soft soil, spreading water draining layer on the lattice, spreading horizontal filtering pipes inside the water draining layer and covering with sealing film to form the quick very soft soil reinforcing system; 2. vacuum pressurizing the very soft soil for 7-14 days; 3. eliminating the water draining layer, spreading water draining sand layer, and reinforcing the foundation through conventional vacuum pre-pressurizing method or soil piling pre-pressurizing method. The present invention has low cost, short construction period and small post-construction deposition difference.

Description

technical field [0001] The invention relates to the fields of construction engineering, port engineering, highway engineering and the like, in particular to a rapid reinforcement method for ultra-soft soil. [0002] The invention also relates to the ultra-soft soil rapid reinforcement device obtained by the method. technical background [0003] my country's coastal areas are densely populated and the per capita arable land area is very small. With the continuous development of the national economy, the scale of construction in coastal areas continues to expand, and land resources are becoming more and more tense. In order to solve the problem of land use for construction, port and wharf projects, Tianjin Port, Lianyungang Port, Guangzhou Nansha Port and Shenzhen Yantian District have carried out a large number of land reclamation projects in recent years. The land reclamation project faces two problems, one is the material of the dredger reclamation, and the other is the re...

AI Technical Summary

Problems solved by technology

Therefore, conventional methods cannot be used for the construction of plastic drainage boards or bagged sand wells, and it is also impossible to lay drainage sand cushions on the ultra-soft surface soil in a flowing state.

[0005] When conventional methods are used to reinforce the ultra-soft soil foundation, in order to prevent the construction equipment from sinking into the silt soil, the super-soft soil on the surface usually needs to be naturally dried for 1 to 2 years or pretreated by other methods. The construction efficiency is low, the cost is high, and the construction period long

[0006] In addition, when conventional methods are used to strengthen the ultra-soft soil foundation, sand is usually added to the dredged silt to improve its performance, so it is easy to form silt pockets, the reinforcement effect and strength are not uniform, and the post-construction differential settlement is large

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