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Long-service-life pavement structure based on sandwich structure and construction method thereof

A pavement structure and sandwich technology, which is applied to cohesive pavement paved on site, roads, roads, etc., can solve the problems of thick pavement and low service life, and achieve the goal of reducing pavement thickness, reducing pavement thickness, and strong waterproof damage ability Effect

Pending Publication Date: 2021-12-31
广东金长成桥梁隧道科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the above-mentioned technical defects of low service life and thick pavement of the existing pavement structure, the present invention provides a long-life pavement structure based on a sandwich structure with good stability, long service life and thin pavement surface layer thickness and its construction method

Method used

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  • Long-service-life pavement structure based on sandwich structure and construction method thereof
  • Long-service-life pavement structure based on sandwich structure and construction method thereof
  • Long-service-life pavement structure based on sandwich structure and construction method thereof

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Experimental program
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Effect test

Embodiment 1

[0041] Such as Figure 1 to Figure 5 As shown, a long-life pavement structure based on a sandwich structure, including a sandwich upper layer 1, a sandwich lower layer 2, a sandwich environment transition layer 3 and an improved and reinforced soil road base 4, the number of layers of the improved and reinforced soil road base 4 is composed of The road grade and loading conditions are determined. Specifically, the improved and reinforced soil road base 4 is composed of 5 layers of improved and reinforced soil layers with a thickness of 25 cm. The improved and reinforced soil layers are composed of gravel soil or lime soil or other reinforced soils. The average compaction degree of each layer of improved and reinforced soil layer must meet the specification requirements, and the deflection value of the top surface of the improved and reinforced soil layer should be less than 0.6 times of the design deflection value of the top surface of the subgrade.

[0042] A sandwich environ...

Embodiment 2

[0047] A long-life pavement structure based on a sandwich structure, including a sandwich upper layer 1, a sandwich lower layer 2, a sandwich environment transition layer 3 and an improved and reinforced soil road base 4. Specifically, the improved and reinforced soil road base 4 is composed of 2 layers thick The composition of the improved and reinforced soil layer is 20cm. The improved and reinforced soil layer is composed of gravel soil or lime soil or other reinforced soil. The average compaction degree of each layer of improved and reinforced soil layer must meet the specification requirements. The deflection value should be less than 0.85 times of the design deflection value of the top surface of the subgrade; the number of layers of the improved and reinforced soil road base 4 is determined by the road grade and load conditions.

[0048] A sandwich environment adaptation transition layer 3 is provided above the improvement and reinforcement soil road base 4. Specifically...

Embodiment 3

[0053]A long-life pavement structure based on a sandwich structure, including a sandwich upper layer 1, a sandwich lower layer 2, a sandwich environment transition layer 3 and an improved and reinforced soil road base 4. Specifically, the improved and reinforced soil road base 4 is 8 layers thick The composition of the improved and reinforced soil layer is 30cm. The improved and reinforced soil layer is composed of gravel soil or lime soil or other reinforced soil. The average compaction degree of each layer of improved and reinforced soil layer must meet the requirements of the specification. The deflection value should be less than 0.35 times of the design deflection value of the top surface of the subgrade; the number of layers of the improved and reinforced soil road base 4 is determined by the road grade and load conditions.

[0054] A sandwich environment adaptation transition layer 3 is provided above the improvement and reinforcement soil road base 4. Specifically, the ...

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Abstract

The invention relates to the technical field of highway pavements, in particular to a long-service-life pavement structure based on a sandwich structure and a construction method thereof. The pavement structure comprises a sandwich upper surface layer, a sandwich lower surface layer, a sandwich environment transition layer and an improved and reinforced soil roadbed layer, the sandwich environment transition layer is arranged above the improved and reinforced soil roadbed layer, the sandwich lower surface layer is arranged above the sandwich environment transition layer, and the sandwich upper surface layer is arranged above the sandwich lower surface layer. The long-service-life pavement structure based on the sandwich structure and the construction method thereof have the advantages that the roadbed stability is good, the pavement service life is long, and the pavement surface layer thickness is reduced, the pavement adopts a four-layer structure of the sandwich upper surface layer, the sandwich lower surface layer, the transition layer and the reinforced roadbed layer, and the pavement structure is innovative and novel; pavement materials are innovated, so that the thickness of a pavement surface layer is greatly reduced, the characteristics of energy conservation, environmental protection and green construction are realized, and the requirement of long service life of a highway pavement is met.

Description

technical field [0001] The invention relates to the technical field of highway pavement, in particular to a long-life pavement structure based on a sandwich structure and a construction method thereof. Background technique [0002] Long-life pavement, as the name implies, is a pavement with a long service life, generally referring to a pavement with a service life of 30-50 years. In road construction engineering practice, long-life pavement is the expected goal of road construction engineering. The long-life pavement is the overall structure of the pavement built on the permanent roadbed with a life span of 30-50 years. It mainly includes two parts: one is the bearing layer with a life span of 30-50 years, and the other is the surface layer with a life span of 15-20 years. The main problem of long-life pavement is that it cannot be deduced and proved in theory, and can only be verified by engineering practice. Up to now, there is no relatively recognized structure and mater...

Claims

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Application Information

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IPC IPC(8): E01C7/32E01C7/18E01C7/24E01C3/04E01C3/06
CPCE01C7/32E01C7/325E01C7/18E01C7/24E01C3/04E01C3/06
Inventor 王金辉张彬
Owner 广东金长成桥梁隧道科技有限公司
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