Composite treatment grouped piles for soft foundation

A soft foundation treatment and composite technology, which is applied in infrastructure engineering, soil protection, construction, etc., can solve problems such as uneven distribution and complex geological conditions, so as to solve uneven stress, improve foundation bearing capacity, and improve The effect of stability

Inactive Publication Date: 2012-10-03
CHINA RAILWAY 16TH BUREAU GRP 5TH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve complex geological conditions, uneven distribution, wide range, widely distributed marine sedimentary silt, mostly in soft plastic, flow plastic shape and deep soft foundation treatment depth of composite soft foundation treatment pile group

Method used

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  • Composite treatment grouped piles for soft foundation
  • Composite treatment grouped piles for soft foundation
  • Composite treatment grouped piles for soft foundation

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Embodiment Construction

[0015] Describe the present invention in detail below in conjunction with embodiment:

[0016] A compound pile group for soft foundation treatment, see attached figure 1 To attach image 3 , in the figure: CFG pile 1, rotary drilled pile 2, pipe pile 3, cushion layer 4, geogrid 5, bottom crushed stone cushion layer 6, bottom medium coarse sand cushion layer 7, lower two-way radial braided geogrid 8. Medium coarse sand cushion 9 in the middle layer, crushed stone cushion 10 in the middle layer, bidirectional radial braided geogrid 11 in the upper layer, 12 medium coarse sand cushion in the upper layer, 13 crushed stone cushion in the upper layer, steel bars 14, and pile caps 15.

[0017] In this embodiment, the CFG pile 1, the rotary bored pile 2 and the tubular pile 3 are placed on the foundation, wherein: the rotary drilled pile 2 and the tubular pile 3 are respectively arranged in a matrix, and the matrix formed by the rotary drilled pile 2 The matrix formed by the tubular...

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Abstract

The invention relates to a treatment structure for a soft foundation, in particular to composite treatment grouped piles for the soft foundation. The composite treatment grouped piles comprise CFG (Cement Flyash Gravel Pile) piles, rotary drilled piles and pipe piles which are arranged in the foundation, wherein matrixes formed by the rotary drilled piles and matrixes formed by pipe piles are arranged at intervals; the CFG piles are also arranged in the form of a matrix and arranged in the matrixes formed by the rotary drilled piles and the matrixes formed by the pipe piles; pile caps are respectively connected above the piles, and the pile caps thereof are connected by reinforcing steel bars; and geogrids are supported on the pile caps thereof, and cotton-padded mattress cushion layers are arranged on the geogrids. Compared with the prior art, the CFG piles, the rotary drilled piles and the pipe piles are in the forms of matrixes and arranged in a staggered manner, so that stressed characteristics of the foundation under different working conditions in different periods are solved, and simultaneously, the bearing capacity of the foundation is greatly improved; the pile caps of the piles are connected, and the foundation load is transmitted through the cotton-padded mattress cushion layers, so that the bearing capacity of high-strength piles of the pile caps are effectively utilized, the stability of the foundation is improved, and the problem that the stress to the soft foundation in the treatment process is uneven is solved.

Description

[0001] Technical field: [0002] The invention relates to a soft ground treatment structure, in particular to a composite soft ground treatment pile group. Background technique: [0003] With the development of the economy and the advancement of science and technology, my country's infrastructure construction such as transportation, water conservancy, and housing construction has developed rapidly, and my country's coastal areas are economically developed, with many engineering construction investment projects and complex technologies. The soil is widely distributed, but due to the increasing load of the structure, the requirements for the foundation are getting higher and higher, so more and more projects require manual treatment of the foundation, such as: house foundations in soft ground areas, plant engineering, For port terminals, subway projects, civil air defense projects, etc., almost all construction projects will anticipate soft foundation treatment and jacking of ex...

Claims

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Application Information

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IPC IPC(8): E02D3/08
Inventor 黎爱清孔德荣李国英张旭东吕秀华李海兵王常坤
Owner CHINA RAILWAY 16TH BUREAU GRP 5TH ENG
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