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Coastal plain area municipal road roadbed waterproof isolation protection structure and construction method

A technology for isolation and protection of municipal roads, applied in the direction of roads, roads, climate change adaptation, etc., can solve problems such as high compressibility, large natural void ratio, and low shear strength

Pending Publication Date: 2020-08-14
CCCC FOURTH HIGHWAY ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The coastal plain originates from shallow sea sediments. The soil is deep and sticky, and mostly belongs to saturated normal compacted clay. The soil types are mostly silt, silty clay, and silty loam. The main characteristics are: high natural water content, The natural void ratio is large, the compressibility is high, the shear strength is low, the consolidation coefficient is small, the consolidation time is long, the sensitivity is high, and the disturbance is large. It will be significantly reduced, causing various diseases such as road surface subsidence and cracking, and affecting the service life of the road

Method used

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  • Coastal plain area municipal road roadbed waterproof isolation protection structure and construction method
  • Coastal plain area municipal road roadbed waterproof isolation protection structure and construction method

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Embodiment Construction

[0014] Such as figure 1 , figure 2 As shown, a kind of municipal road subgrade waterproof isolation protection structure in the coastal plain area provided by the present invention is successively filled with solidified soil layer 2, lime soil layer 3 and mountain bark soil layer 4 below the surface layer 1 of the subgrade, and the mountain The leather soil 4 is located on the underground impermeable soil layer 5; the two sides of the subgrade are respectively provided with sealing ditch 6, and the bottom of the sealing ditch 6 penetrates into the underground impermeable soil layer 5 to a certain depth, and at the bottom of the sealing ditch 6, there is a longitudinal seal ditch along the sealing ditch. Drainage sand ditch 7, filled with medium-coarse sand in the drainage sand ditch, one side slope of the sealing ditch 6 is connected with the roadbed, and the other side slope is located on the permeable soil layer 8 below the ground, at the bottom of the sealing ditch and the...

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Abstract

The invention relates to a coastal plain area municipal road roadbed waterproof isolation protection structure and a construction method. Sealing ditches are built on two sides of a roadbed; each sealing ditch is excavated to a certain depth below a underground impermeable soil layer; and sealing films are laid at bottoms of the sealing ditches and on side slopes, and the sealing ditches are filled with limestone soil so that the roadbed is isolated from peripheral permeable soil, underground water is prevented from invading the roadbed to damage a pavement structure, and various diseases suchas pavement collapse and cracking caused by underground water erosion can be reduced.

Description

technical field [0001] The invention relates to the technical field of road subgrade construction, in particular to a road subgrade isolation protection structure and a construction method in coastal plain areas, which are suitable for road engineering projects for shallow subgrade treatment. Background technique [0002] The coastal plain originates from shallow sea sediments. The soil is deep and sticky, and mostly belongs to saturated normal compacted clay. The soil types are mostly silt, silty clay, and silty loam. The main characteristics are: high natural water content, The natural void ratio is large, the compressibility is high, the shear strength is low, the consolidation coefficient is small, the consolidation time is long, the sensitivity is high, and the disturbance is large. It will be significantly reduced, causing various diseases such as road surface subsidence and cracking, and affecting the service life of the road. Contents of the invention [0003] The...

Claims

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Application Information

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IPC IPC(8): E01C3/06
CPCE01C3/06Y02A30/60
Inventor 杨浩党彦锋师煜杨德月李伟武彦杰李红莲朱守泰王然
Owner CCCC FOURTH HIGHWAY ENG
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