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Construction method of highway widening subgrade

A construction method and roadbed technology, applied in roads, roads, buildings, etc., can solve problems such as not being able to meet traffic demands, and achieve the effects of stable uneven settlement, increased shear resistance, and high strength

Inactive Publication Date: 2017-11-17
郭昆朋 +4
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  • Summary
  • Abstract
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Problems solved by technology

[0002]With the rapid development of our country's social economy, most of the current road functions can no longer meet the growing traffic demand of the society. Therefore, the original roads are upgraded Retrofit is imperative

Method used

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  • Construction method of highway widening subgrade

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings, so that those of ordinary skill in the art can implement it after referring to this specification.

[0024] Such as figure 1 As shown, a construction method for road widening subgrade mainly includes the following steps:

[0025] Step 1.1, measure and stake out the position where the original subgrade needs to be widened, mark the position where the widening is required, and dig the slope 1 step by step along the angle of the original subgrade slope, and the platform 2 between the slopes 1 of each level is from the road to The lower width gradually decreases, and the vertical height of the slope 1 is 1-2 meters;

[0026] Step 1.2, on the bottom platform 2, drive wooden piles 3 with the same length as the slope surface along the direction parallel to the slope surface 1 and the direction perpendicular to the slope surface 1, until the piles 3 The top surface is flush ...

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Abstract

The invention discloses a construction method of widening a roadbed of a road. Slopes with the gradient identical as an original roadbed are manufactured on the original roadbed stage by stage; then wood piles playing a role in supporting are driven into gravel soil layers in a crossing mode, specifically, the gravel soil layers are compacted one by one; and geogrids used for achieving fixation and improving firmness of junction of the new roadbed and the original roadbed are laid on the surface of each layer. Thus, the widened roadbed and the original roadbed are tightly combined, the degree of settling of the widened roadbed is effectively reduced, cracks between the new roadbed and the original roadbed are avoided, and therefore the service life of the widened road is prolonged.

Description

technical field [0001] The invention relates to the field of road construction, in particular to a construction method for road widening roadbed. Background technique [0002] With the rapid development of our country's social economy, most of the current road functions can no longer meet the growing traffic demand of the society. Therefore, it is imperative to upgrade the original roads. The roadbed widening is the key to the reconstruction project, whether it is design or construction. After many years of highway traffic, the subgrade settlement has been basically completed. Due to the uneven settlement of the new and old subgrades, cracks, represented by longitudinal cracks, will inevitably occur in the widened section of the subgrade, which will damage the highway. Therefore, it is necessary to strengthen the design optimization and construction quality of roadbed widening, so as to minimize the settlement and ensure the quality of the road. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C3/00E01C3/04
CPCE01C3/00E01C3/04
Inventor 郭昆朋巩瑞才封彦珠杨庆民巩瑞颉
Owner 郭昆朋
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