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Road bed structure of road

A technology for subgrades and roads, which is applied in the direction of infrastructure engineering, roads, roads, etc. It can solve the problems that the technical requirements for road foundation reinforcement cannot be met, and the design scheme is not feasible, so as to increase piling efficiency, prevent road surface subsidence, and increase friction. Effect

Active Publication Date: 2017-04-19
广东恒普建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the deep and weak soil layer in the inland lacustrine sedimentary belt cannot meet the technical requirements for road foundation reinforcement, the previous method is usually to modify the route plan or use bridges to pass through. When the plan is difficult to change or the bridge plan is unconditionally implemented, it will lead to the entire design The impossibility of the plan

Method used

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  • Road bed structure of road
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  • Road bed structure of road

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1-5 As shown, a road subgrade structure includes: a base layer 1, and a plurality of pipe piles 2 vertically inserted into the base layer at the bottom, the upper part of the pipe piles vertically protrudes from the upper surface of the base layer, and side guards are arranged on both sides of the roadbed Dun 3, the part of the side shield goes deep into the base layer, and part of the cross section deep into the base layer is rectangular, and the cross section of the part above the base layer of the side shield is a right-angled trapezoid, and the inclined section of the right-angle trapezoid faces outward to form the side slope of the subgrade 4, above the base layer The first geotextile layer 5 is laid, on the first geotextile layer is a gravel cushion 6, on the gravel cushion is laid a second geotextile layer 7, on the second geotextile is a solidified fill layer 8, the top of the pipe pile and The upper end of the side cover is flush with the surfac...

Embodiment 2

[0035] A road subgrade structure, comprising: a base layer, and a plurality of pipe piles whose lower parts are vertically inserted into the base layer; Part of it goes deep into the base layer, and part of the section deep into the base layer is rectangular, and the section above the base layer is a right-angled trapezoid, and the inclined section of the right-angled trapezoid is facing outward to form the side slope of the subgrade, and the first geotextile layer is laid on the base layer. The first geotextile layer is a gravel cushion, the second geotextile layer is laid on the gravel cushion, and the solidified fill layer is placed on the second geotextile layer. Flush, the concrete pavement base is laid on the top of the pipe pile and the side protection and the solidified fill layer, the interface adhesive layer is on the concrete pavement base, the asphalt layer is placed on the interface adhesive layer, and the solidified fill layer includes Soil curing agent, curing a...

Embodiment 3

[0043]A road subgrade structure, comprising: a base layer, and a plurality of pipe piles whose lower parts are vertically inserted into the base layer; Part of it goes deep into the base layer, and part of the section deep into the base layer is rectangular, and the section above the base layer is a right-angled trapezoid, and the inclined section of the right-angled trapezoid is facing outward to form the side slope of the subgrade, and the first geotextile layer is laid on the base layer. The first geotextile layer is a gravel cushion, the second geotextile layer is laid on the gravel cushion, and the solidified fill layer is placed on the second geotextile layer. Flush, the concrete pavement base is laid on the top of the pipe pile and the side protection and the solidified fill layer, the interface adhesive layer is on the concrete pavement base, the asphalt layer is placed on the interface adhesive layer, and the solidified fill layer includes Soil curing agent, curing ag...

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Abstract

The invention discloses a roadbed structure of a road. The roadbed structure comprises a bottom layer and a plurality of pipe piles of which the lower parts are vertically inserted into the bottom layer; the upper parts of the pipe piles vertically extend of the upper surface of the bottom layer; side protection piers are arranged on two sides of the roadbed; part of the side protection piers extends into the bottom layer; the section of the part extending into the bottom layer is rectangular; the sections of parts, above the bottom layer, of the side protection piers, are in right-angled trapezoid shapes; inclined sections of the right-angled trapezoids face outwards to form side slopes of the roadbed; the water content of the bottom layer (soft soil) is relatively high, and the outer surfaces of pipe bodies, embedded into the bottom layer part, of the pipe piles are coated with rubber coatings, so that the pipe bodies are in contact with the bottom layer (the soft soil), and the durability of the pipe piles is improved; in addition, the rubber coatings disclosed by the invention are firmly bonded with the pipe bodies, so that the rubber coatings are not easy to fall off in the construction process; and a greater friction force is formed between the pipe piles coated with the rubber coatings and a surrounding soil body, thereby improving the bearing capacity.

Description

technical field [0001] The invention relates to a road subgrade structure, which belongs to the technical field of road construction. Background technique [0002] The speed, convenience and comfort of roads are one of the important symbols of a country's development. All developed countries in the world have intercity road networks. The road network needs to have the characteristics of high strength, high rigidity, good stability and durability, and the design parameters of the road must be kept within the required standard range during use. Therefore, the road is more reflected in the strict control of the deformation of the embankment. When the deep and weak soil layer in the inland lacustrine sedimentary belt cannot meet the technical requirements for road foundation reinforcement, the previous method is usually to modify the route plan or use bridges to pass through. When the plan is difficult to change or the bridge plan is unconditionally implemented, it will lead to...

Claims

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Application Information

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IPC IPC(8): E01C3/06E01C7/32E02D27/16E02D3/12E02D5/30E02D5/72E02D5/60C09K17/40C09D123/16C09D183/04C09D133/00
CPCC08K2201/011C08L2205/03C09D123/16C09K17/40C09D7/61E01C3/00E01C3/06E01C7/325E02D3/12E02D5/30E02D5/60E02D5/72E02D27/16E02D2300/0045C08L83/04C08L33/00C08K3/00C08K3/26C08K3/34C08K2003/2296Y02A30/60
Inventor 康颖
Owner 广东恒普建设工程有限公司