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Permafrost region prefabricated hollow slab base course pavement structure capable of increasing the construction speed

A technology of pavement structure and hollow slab, which is applied to pavement paved with prefabricated blocks, cohesive pavement paved on site, roads, etc. It can solve the problems of long construction period and entry into the roadbed, so as to increase the contact surface and speed up construction progress, increase the effect of construction stability

Inactive Publication Date: 2021-02-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are certain limitations, and none of them can fundamentally solve the problem of heat entering the subgrade from the road surface.
[0004] In addition, during the construction of the existing roads in the permafrost region, all the on-site filling is required, so the construction period is long

Method used

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  • Permafrost region prefabricated hollow slab base course pavement structure capable of increasing the construction speed
  • Permafrost region prefabricated hollow slab base course pavement structure capable of increasing the construction speed
  • Permafrost region prefabricated hollow slab base course pavement structure capable of increasing the construction speed

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0028] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "left side", "right side", "upper", "lower" are based on the orientations or positional relationships shown in the accompanying drawings, and are only For the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, "first", "second" and the like do not represent components importance, and therefore should not be construed as limiting the invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present in...

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Abstract

The invention discloses a permafrost region prefabricated hollow slab base course pavement structure capable of increasing the construction speed. The permafrost region prefabricated hollow slab basecourse pavement structure comprises a graded gravel cushion layer, a prefabricated hollow slab base course, a graded broken stone layer and an asphalt surface layer which are sequentially laid from bottom to top. The prefabricated hollow slab base layer comprises prefabricated hollow slabs arranged in an N * M matrix; H hollow holes are formed in each prefabricated hollow plate at equal intervals;in the longitudinal direction of the road, polygonal cast-in-place belts with the same width are formed between every two of the N prefabricated hollow plates in each column, and the number of the Nprefabricated hollow plates in each column is made to form a whole by pouring cement-based grouting materials; and in the transverse direction of the road, every two of the M prefabricated hollow slabs in each row are attached and spliced, the H hollow holes of the M prefabricated hollow slabs are aligned, and heat dissipation through holes communicating with the ambient atmosphere are formed. Thehollow holes are adopted to conduct heat, the effect of protecting frozen soil is achieved, the prefabricated hollow slabs can improve the construction speed and stability, and the prefabricated hollow slabs can be widely applied to highway construction in permafrost regions.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a prefabricated hollow slab base pavement structure in permafrost regions that can speed up construction. Background technique [0002] Frozen soil refers to soil and rocks with negative temperature and ice, and is mainly divided into permafrost and seasonal frozen soil according to the survival time. my country's permafrost area accounts for about 22.4% of the country's land area, and it is the third largest country in the world with permafrost. Due to the existence of ice and unfrozen water in frozen soil, its properties are extremely complex and sensitive to temperature. Road engineering construction and global warming will cause the temperature of permafrost to rise, which will bring thawing and settlement diseases to the subgrade, and seriously endanger the stability of roads in permafrost regions. [0003] In order to reduce the heat accumulation in the subgrade and allevi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/18E01C5/06E01C3/06E01C11/00
CPCE01C3/06E01C5/06E01C7/18E01C11/00
Inventor 黄晓明张秋菊洪正强柳雨豪严佳玉
Owner SOUTHEAST UNIV
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