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Foam light soil high-filled subgrade broadening construction method

A technology of foam light soil and construction method, which is applied in the direction of infrastructure engineering, roads, excavation, etc., can solve the problems of embankment sloping covering a large area, the impact of post-construction settlement, and the large vertical additional stress, etc., to reduce the engineering The effect of reducing cost, reducing water seepage, reducing material loss and project cost

Active Publication Date: 2019-07-23
杭州悦为科技有限公司
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Problems solved by technology

In the high-fill embankment project, if traditional materials (earth and rock) are used for filling, the required amount of earth and stone will be large, and the vertical additional stress will be large, which will have a great impact on post-construction settlement and easily cause road cracking and slope collapse; and construction The construction period is long, the embankment slope covers a large area, and the project cost is high; while the high filling project generally has the characteristics of tight construction period and large filling volume, it is urgent to propose corresponding solutions

Method used

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  • Foam light soil high-filled subgrade broadening construction method
  • Foam light soil high-filled subgrade broadening construction method
  • Foam light soil high-filled subgrade broadening construction method

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Embodiment Construction

[0049] In order to deepen the understanding of the present invention, reference will be made to Figure 1 to Figure 12 , the embodiments of the present invention are described in detail, the following embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.

[0050] The height of the filling area is 8m, the width of the subgrade widening is two lanes and two sidewalks, a total of 12.5m, the widening length is 2.5km, the size of the prefabricated baffle is 3m×1.5m×0.1m, and the light foam soil is used The cement is made of ordinary silicon PO42.5(R). The anchor cables and drainage pipes are installed horizontally on the large platform. The horizontal spacing of the anchor cables is 3m, and the horizontal spacing of the drainage pipes is 5m. The platform reinforcement mesh is galvanized with Φ3~4mm@5cm×5cm B...

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Abstract

The invention relates to a foam light soil high-filled subgrade broadening construction method. The foam light soil high-filled subgrade broadening construction method is characterized in that firstly, slope cutting is carried out on an original old subgrade into a stair type, a concrete baffle is arranged on the periphery of the broadening side of the subgrade and used as a foam light soil pouring template, a steel bar net is horizontally arranged at the position of a large platform and is connected with the baffle, a pre-stressed anchor rod is additionally arranged to be anchored on the baffle, pouring construction of foam light soil is carried out in layering, partition and segmentation modes, and finally, the baffle is removed and hanging soil engineering bags are mounted. The construction method comprises the steps of original subgrade construction, baffle mounting, foam light soil pouring, steel bar net and drainage pipe mounting, anchor cable construction, foam light soil pouring, steel support removal and hanging soil engineering bag mounting. According to the foam light soil high-filled subgrade broadening construction method, the baffle and embedded structural steel are arranged on the broadening side of high fill in an erection mode to form a stable supporting structure, the stability of the baffle can be effectively improved, the structural steel can be recycled andreused after construction, and material breakage and construction cost are reduced.

Description

technical field [0001] The invention relates to widening construction of a high-fill embankment on a soft foundation with high requirements for post-construction settlement, in particular to a construction method for widening a high-fill embankment of foam light soil. Background technique [0002] The post-construction settlement caused by the widening of high-fill soft soil subgrade has always been a prominent problem. In the high-fill embankment project, if traditional materials (earth and rock) are used for filling, the required amount of earth and stone will be large, and the vertical additional stress will be large, which will have a great impact on post-construction settlement and easily cause road cracking and slope collapse; and construction The construction period is long, the embankment slope covers a large area, and the project cost is high; while the high filling project generally has the characteristics of tight construction period and large filling volume, it i...

Claims

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Application Information

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IPC IPC(8): E01C3/04E01C3/00E02D17/20
CPCE01C3/00E01C3/04E02D17/207
Inventor 朱凯陈小林
Owner 杭州悦为科技有限公司
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