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Earthwork standard room bar-adding cellular concrete light roadbed filling structure and method thereof

A foamed concrete and geocell technology, which can be used in buildings, roads, roads, etc., can solve the problems of water damage, low strength, easy cracking, etc., and achieve the effect of reducing the thickness of the road surface, good fluidity, and high strength of the base.

Inactive Publication Date: 2017-09-15
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a geocell-reinforced foam concrete lightweight roadbed filling structure and its method to solve the problem of low strength, easy cracking and water damage in the existing roadbed. Serious damage and other problems, so that within the specified service life of the road, the subgrade structure is intact, and the damage from bottom to top is reduced

Method used

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  • Earthwork standard room bar-adding cellular concrete light roadbed filling structure and method thereof
  • Earthwork standard room bar-adding cellular concrete light roadbed filling structure and method thereof
  • Earthwork standard room bar-adding cellular concrete light roadbed filling structure and method thereof

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Embodiment

[0041] like figure 1 Shown is a geocell reinforced foam concrete lightweight subgrade structure, including geocell structure 1, cement-fly ash foam concrete filling 2, base drainage ditch 3, geotextile 4 arranged on the upper part of foam concrete, geotextile Ground pile steel nails 5 on both sides of the cell. The specific construction method has the following steps:

[0042] (1) According to the linear design of the road, excavate, fill, compact and level the original foundation to ensure that the surface of the treated foundation is flat and the slope is uniform. Further clean up the treated foundation to ensure that there are no large pieces of gravel, sundries and accumulated water.

[0043] (2) Prepare geocell materials of corresponding specifications according to the width of the road, such as figure 2 As shown, the single hole length (L) of the selected geocell is 20cm in this embodiment, and the single hole width (B) is 12cm. The outside of the geocell is wavy, an...

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Abstract

The invention discloses an earthwork standard room bar-adding cellular concrete light roadbed filling structure and method thereof, and belongs to the technical field of design and construction in roadbed project. A roadbed structure of the invention adopts high-strength earthwork standard room bar adding, and then is filled by light cellular concrete. The construction method comprises the following steps of excavating and leveling an original foundation; tensioning and fixing an earthwork standard room; pouring and filling cellular concrete materials; arranging a drainage ditch; and arranging geotechnical cloth. The roadbed structure adopts the filling of the earthwork standard room bar-adding cellular concrete, has the characteristics of being high in base bending and pulling resistance strength and good in durability, the occurrence of large settlement deflection and deformation is avoided, and meanwhile by using the earthwork standard room bar-adding, the strength and integrity of the base are further enhanced, the road surface structure damage from lower to uppwer caused by the cracking and crushing of the materials is avoided, and the roadbed structure is suitable for roadbed engineering construction of all levels of roads, especially for the geological conditions of foundations with low bearing capacity.

Description

technical field [0001] The invention belongs to the technical field of design and construction in road subgrade engineering, and in particular relates to a geocell reinforced foam concrete lightweight subgrade filling structure and a method thereof. Background technique [0002] In road engineering design, roadbeds are divided into three types: flexible base, semi-rigid base and rigid base based on the materials and mechanical properties of the base. The rigidity of the flexible base structure is small, and it is easy to produce large vertical deformation under the action of vehicle load, which will cause large deformation of the road surface, and the requirement for the thickness of the asphalt surface layer is relatively high. The semi-rigid base and rigid base have higher strength, but they are prone to cracks under the action of temperature and vehicle, resulting in reflection cracks on the asphalt pavement. The integrity of subgrade structure has a great influence on r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/04E01C3/02E01C11/22C04B28/00C04B38/02
CPCE01C3/04C04B28/00C04B38/02E01C3/02E01C11/227C04B18/08
Inventor 黄晓明朱宇昊黄若昀马静雯殷大泉
Owner SOUTHEAST UNIV
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