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Vertical drainage road foundation structure based on electro-osmotic method

A vertical drainage and roadbed technology, applied in roads, roads, road bottom layers, etc., can solve the problems of reducing the service life of roadbeds, failing to prevent external moisture accumulation layers, weakening the performance of roadbeds, etc., and achieve the effect of simple construction methods

Inactive Publication Date: 2019-04-05
HARBIN INST OF TECH
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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 the problem that the existing technology cannot prevent external moisture from entering the roadbed under the action of freezing to form a water-enriched layer, and it is also impossible to drain the excess water trapped inside the roadbed during the melting period, resulting in the water-enriched layer Subsequent freeze-thaw cycles cause severe freeze-thaw damage, weaken the performance of the roadbed and reduce the service life of the roadbed, thus providing a vertical drainage roadbed structure based on electroosmosis

Method used

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  • Vertical drainage road foundation structure based on electro-osmotic method
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  • Vertical drainage road foundation structure based on electro-osmotic method

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specific Embodiment approach 1

[0022] Specific implementation mode one: combine figure 1 with figure 2 Describe this embodiment in detail. A vertical drainage subgrade structure based on electroosmosis described in this embodiment includes an upper road bed 3, an anode conductive geogrid 4, a lower road bed 5, a cathode conductive geogrid 6, multiple Root porous drainage pipe 7, drainage groove 8, subgrade base 9, DC power supply and humidity sensor;

[0023] The upper road bed 3, the lower road bed 5, and the roadbed base 9 are stacked sequentially from top to bottom. The two sides of the road bed base 9 are mirrored and symmetrically provided with drainage grooves 8, and the upper road bed 3 is provided with a layer of anode conductive geogrid 4. The lower road bed 5 is provided with a layer of cathode conductive geogrid 6 and a plurality of porous drainage pipes 7, the porous drainage pipes 7 are close to the lower surface of the cathode conductive geogrid 6, and the moisture in the soil is collected b...

specific Embodiment approach 2

[0030] Specific embodiment two: This embodiment is a further description of a vertical drainage subgrade structure based on electroosmotic method described in specific embodiment one. In this embodiment, the anode conductive geogrid 4 and the cathode conductive geogrid 6 The distance in the vertical direction is 20cm to 40cm.

specific Embodiment approach 3

[0031] Specific embodiment three: This embodiment is a further description of a vertical drainage subgrade structure based on electroosmotic method described in specific embodiment two. In this embodiment, the anode conductive geogrid 4 and the cathode conductive geogrid 6 are made of reinforced grid mixed with conductive carbon fiber. So it has good conductivity. The use of reinforced grids mixed with conductive carbon fibers can not only realize the original function of reinforcing the roadbed, but also realize the new drainage function.

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Abstract

The invention provides a vertical drainage road foundation structure based on an electro-osmotic method and relates to the highway road foundation construction and waterproof and drainage technical field. The vertical drainage road foundation structure aims at solving the problems that external moisture cannot be prevented from entering a road foundation to form a moisture enrichment layer in theprior art, rich moisture remaining in the road foundation cannot be drained in a thawing stage, so that the moisture enrichment layer causes freezing and thawing damage in a freezing and thawing cycle, the use performance of the road foundation is weakened, and the service life of the road foundation is shortened. An upper roadbed, a lower roadbed and a road foundation bottom are sequentially stacked from top to bottom, drainage grooves are formed in the two sides of the road foundation bottom in a mirror symmetric mode, a layer of anode conductive geogrid is arranged in the upper roadbed, a layer of cathode conductive geogrid and multiple porous drainage pipes are arranged in the lower roadbed, the porous drainage pipes are tightly attached to the lower surface of the cathode conductive geogrid, moisture in a soil body is collected by the porous drainage pipes and then guided to the drainage grooves, the positive electrode of a direct current power source is connected with the anode conductive geogrid, and the negative electrode of the direct current power source is connected with the cathode conductive geogrid. The vertical drainage road foundation structure is suitable for the road foundation.

Description

technical field [0001] The invention relates to the technical field of highway subgrade and waterproofing and drainage, in particular to a subgrade structure for vertical drainage based on electroosmotic method. Background technique [0002] The subgrade in the seasonally frozen area will form a moisture-enriched layer after the freeze-thaw cycle, and its existence will increase the moisture content of the subgrade and reduce the modulus, so that serious uneven settlement and muddying will occur under the action of the dynamic load transmitted from the pavement , Seriously affect the working status and service life of the subgrade, greatly restrict the safety and efficiency of road traffic, and bring great hidden dangers to the safety of people's lives and property and social and economic development. [0003] Currently, two techniques are often used for embankment drainage. One is to build drainage facilities on the ground and underground, and through the coordinated work ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/00E01C3/06E01F5/00
CPCE01C3/00E01C3/06E01F5/00
Inventor 张锋唐康为王冠夫冯德成史盛
Owner HARBIN INST OF TECH
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