Drainage consolidation construction method combining hot water pipe and plastic drainage plate

A plastic drainage board, drainage consolidation technology, applied in infrastructure engineering, soil protection, construction, etc., can solve problems such as decreasing permeability coefficient, hindering the discharge of pore water in soil, decreasing consolidation rate, etc. The effect of small pre-consolidation pressure, accelerated consolidation drainage rate, and increased settlement

Inactive Publication Date: 2020-03-31
TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the plastic drainage board is drilled into the soil, the soil around the plastic drainage board will be disturbed, the original structure of the soil will be destroyed, and the permeability coefficient will become smaller. This area is called the "smear area". , whose diameter is about three times that of the plastic drainage board. The existence of the smeared area hinders the discharge of pore water in the soil body, resulting in a decrease in the consolidation rate

Method used

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  • Drainage consolidation construction method combining hot water pipe and plastic drainage plate
  • Drainage consolidation construction method combining hot water pipe and plastic drainage plate
  • Drainage consolidation construction method combining hot water pipe and plastic drainage plate

Examples

Experimental program
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Effect test

Embodiment 1

[0051] A drainage consolidation construction method combining hot water pipes and plastic drainage boards is carried out according to the following steps:

[0052] Step 1. The site is leveled, and the medium-coarse sand cushion is laid, and the permeability coefficient is required to be greater than 10 -3 m / s, the plastic drainage board is introduced into the casing from the top of the casing, and drawn out from the bottom of the casing, with 0.5m exposed, such as image 3 As shown, use a vibrating hammer to drive the casing into the foundation. After the casing is pulled out, the plastic drainage board will remain in the foundation soil. The plastic drainage board is cut off so that the length of the exposed ground is 0.5m. Embedded in the sand cushion.

[0053] Step 2. Repeat the above steps to arrange several plastic drainage boards in a square matrix, and the distance between adjacent plastic drainage boards is 2.0m.

[0054] Step 3, inject hot water pipes into the soil ...

Embodiment 2

[0069] A drainage consolidation construction method combining hot water pipes and plastic drainage boards is carried out according to the following steps:

[0070] Step 1. The site is leveled, and the medium-coarse sand cushion is laid, and the permeability coefficient is required to be greater than 10 -3 m / s, the plastic drainage board is introduced into the casing from the top of the casing, and drawn out from the bottom of the casing, with 0.5m exposed, such as image 3 As shown, use a vibrating hammer to drive the casing into the foundation. After pulling out the casing, the plastic drainage board will remain in the foundation soil. Cut the plastic drainage board so that the length of the exposed ground is 0.5m. Embedded in the sand cushion.

[0071] Step 2. Repeat the above steps to arrange several plastic drainage boards in a square matrix, and the distance between adjacent plastic drainage boards is 2.0m.

[0072] Step 3: Drive hot water pipes into the soil, so that s...

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Abstract

The invention discloses a drainage consolidation construction method combining a hot water pipe and a plastic drainage plate. The method is reasonable in design. The heating function of the hot waterpipe and the drainage function of the drainage plate are fully exerted. The hot water pipe is utilized to raise the temperature of a smearing region soil body around the plastic drainage plate, accelerate the consolidation drainage rate, and shorten the consolidation time. Meanwhile, the initial consolidation pressure of soil can be reduced, and the settlement amount during foundation treatment can be increased.

Description

technical field [0001] The invention belongs to the field of soft soil engineering foundation treatment, and in particular relates to a drainage consolidation construction method combining hot water pipes and plastic drainage boards. Background technique [0002] In the field of soft soil engineering foundation treatment, accelerating soil consolidation by laying plastic drainage boards has become a preferred process for large-area deep soft soil treatment. Especially for the silt after dredging filling, the water content exceeds 100%, and there is basically no strength. By setting up plastic drainage boards to shorten the drainage path, and then combining vacuum preloading, the silt can be consolidated within 3 to 4 months, and the maximum The settlement can reach more than 3m. Plastic drainage boards combined with vacuum preloading have been widely used in Tianjin, Huanghua Port, Lianyungang, Shenzhen and other places for reclamation and land reclamation reinforcement. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 陈富诸葛爱军
Owner TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG
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