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Asphalt pavement structure suitable for Tibet plateau area and construction method thereof

A kind of asphalt pavement and regional technology, applied in the field of road engineering construction, can solve the problems of short service life, serious early disease, frequent maintenance, etc.

Pending Publication Date: 2017-06-20
青海省交通科学研究院 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: the present invention makes improvements to the problems existing in the above-mentioned prior art, that is, the first purpose of the present invention is to disclose a kind of asphalt pavement structure suitable for the Qinghai-Tibet Plateau region, so as to solve the problems existing in the existing art in the Qinghai-Tibet region. Severe early diseases, short service life, poor durability, frequent maintenance, etc.

Method used

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  • Asphalt pavement structure suitable for Tibet plateau area and construction method thereof

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specific Embodiment 1

[0047] Such as figure 1 As shown, an asphalt pavement structure suitable for the Qinghai-Tibet Plateau area includes, from bottom to top, cushion layer 1, semi-rigid base layer 2, permeable layer 3, SBR emulsified asphalt lower seal layer 4, lower layer 5, adhesive layer 6 and upper layer Layer 7.

[0048] Further, the cushion layer 1 is a natural gravel layer, and the thickness of the cushion layer 1 is 30 cm.

[0049] Further, the semi-rigid base layer 2 includes an upper base layer 22 and a lower base layer 21,

[0050] The upper base 22 is a low-shrinkage ultra-early-strength cement stabilized gravel layer,

[0051] The base course 21 is a cement-stabilized gravel layer,

[0052] The gradation types of the upper base layer 22 and the lower base layer 21 are both skeleton dense structures,

[0053] The thickness of the base layer 21 is 16cm,

[0054] The upper base layer 22 has a thickness of 16 cm.

[0055] Further, the permeable layer 3 is an SBR modified emulsified a...

specific Embodiment 2

[0073] An asphalt pavement structure suitable for the Qinghai-Tibet Plateau region, comprising a cushion layer 1, a semi-rigid base layer 2, a permeable layer 3, an SBR emulsified asphalt lower seal layer 4, a lower layer 5, an adhesive layer 6 and an upper layer 7 from bottom to top.

[0074] Further, the cushion layer 1 is a natural gravel layer, and the thickness of the cushion layer 1 is 50 cm.

[0075] Further, the semi-rigid base layer 2 includes an upper base layer 22 and a lower base layer 21,

[0076] The upper base 22 is a low-shrinkage ultra-early-strength cement stabilized gravel layer,

[0077] The base course 21 is a cement-stabilized gravel layer,

[0078] The gradation types of the upper base layer 22 and the lower base layer 21 are both skeleton dense structures,

[0079] The thickness of the base layer 21 is 20cm,

[0080] The thickness of the upper base layer 22 is 20 cm.

[0081] Further, the permeable layer 3 is an SBR modified emulsified asphalt layer...

specific Embodiment 3

[0099] An asphalt pavement structure suitable for the Qinghai-Tibet Plateau region, comprising a cushion layer 1, a semi-rigid base layer 2, a permeable layer 3, an SBR emulsified asphalt lower seal layer 4, a lower layer 5, an adhesive layer 6 and an upper layer 7 from bottom to top.

[0100] Further, the cushion layer 1 is a natural gravel layer, and the thickness of the cushion layer 1 is 40 cm.

[0101] Further, the semi-rigid base layer 2 includes an upper base layer 22 and a lower base layer 21,

[0102] The upper base 22 is a low-shrinkage ultra-early-strength cement stabilized gravel layer,

[0103] The base course 21 is a cement-stabilized gravel layer,

[0104] The gradation types of the upper base layer 22 and the lower base layer 21 are both skeleton dense structures,

[0105] The thickness of the base layer 21 is 18cm,

[0106] The upper base layer 22 has a thickness of 18 cm.

[0107] Further, the permeable layer 3 is an SBR modified emulsified asphalt layer ...

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Abstract

The invention relates to an asphalt pavement structure suitable for the Tibet plateau area and a construction method thereof. The asphalt pavement structure suitable for the Tibet plateau area sequentially comprises a cushion layer, a semi-rigid base layer, a penetrable layer, an SBR emulsified asphalt lower sealing layer, a lower surface layer, a bonding layer and an upper surface layer from bottom to top. The construction method of the asphalt pavement structure suitable for the Tibet plateau area comprises the following steps of (1) tamping and leveling a roadbed, (2) laying the cushion layer on the roadbed, (3) laying a cement stabilized sand gravel layer on the cushion layer, (4) flatly laying a low-shrinkage super-early-strength cement stabilized macadam layer, (5) laying the penetrable layer, (6) laying the SBR emulsified asphalt lower sealing layer, (7) laying the lower surface layer, (8) laying the bonding layer, and (9) laying the upper surface layer.

Description

technical field [0001] The invention belongs to the field of road engineering construction and relates to an asphalt pavement structure, in particular to an asphalt pavement structure suitable for the Qinghai-Tibet Plateau region and a construction method thereof. Background technique [0002] How to design a more scientific and reasonable highway pavement and continuously improve the performance and durability of the pavement has always been the main topic of pavement technology research. Although my country currently has a set of relatively complete pavement structure design and construction technical specifications to guide pavement design, this is only a general principle of pavement design and construction based on theoretical analysis and limited experience summary. There is still a series of research work to be done to design a pavement that adapts to the climate, soil quality, hydrology and material conditions of different regions, and can meet the traffic load requi...

Claims

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Application Information

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IPC IPC(8): E01C7/22E01C7/32
CPCE01C7/22E01C7/325
Inventor 房建宏陈华鑫熊锐徐安花邢明亮盛燕萍关博文李祖仲王小雯
Owner 青海省交通科学研究院
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