A Construction Method of High Polymer Grouting to Reinforce and Anti-Settlement Widening Subgrade

A construction method and polymer technology, applied in the directions of roads, roads, buildings, etc., can solve the problems of slope collapse and lateral slip of roadbed, and achieve the effects of not easy to collapse, effective slope protection, and stable joints.

Active Publication Date: 2018-07-03
江苏建通绿色工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a potential sliding surface will be formed after excavating the steps, which may cause lateral sliding of the widened part of the subgrade;
[0006] 3. Slope landslides: After the filling of new embankments is completed, for those with high slopes or large slopes, the slope protection measures should not be prone to landslides immediately

Method used

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  • A Construction Method of High Polymer Grouting to Reinforce and Anti-Settlement Widening Subgrade
  • A Construction Method of High Polymer Grouting to Reinforce and Anti-Settlement Widening Subgrade
  • A Construction Method of High Polymer Grouting to Reinforce and Anti-Settlement Widening Subgrade

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Embodiment 1

[0041] The high polymer grouting in this embodiment to strengthen the subsidence and widen the subgrade is implemented for the low embankment, and the low embankment refers to the embankment whose height is not greater than 1.5m.

[0042] Such as figure 1 As shown, for the low embankment, the interface between the old subgrade and the new subgrade is set as the slope interface 4a, the filling layer 1 is filled and compacted in layers according to the height of the embankment, and the geotechnical pipe network is laid on the top surface of the filling layer 1; The geotechnical pipe network is formed by grouting with polymer slurry to form the geotechnical pipe network 2a for grouting the filling layer, and the vertical filling layer reinforcement column 3a that penetrates the slope interface 4a and extends into the foundation; There is a road shoulder geotechnical pipe network extending on the roadbed, and a high polymer slurry is used for the road shoulder geotechnical pipe ne...

Embodiment 2

[0052] In this embodiment, polymer grouting to reinforce anti-subsidence and widen the subgrade is aimed at general embankments or high embankments. General embankments refer to embankments whose height is between 1.5m and 18m, and high embankments refer to embankments whose height is not less than 18m.

[0053] Such as figure 2 As shown, for general embankment or high embankment: the interface between the old subgrade and the new subgrade is set as the step interface 4b, and the filling layer 1 is filled and compacted in layers according to the height of the corresponding step in the step interface 4b, forming various The filling layer is layered, and the geotechnical pipe network is laid on the top surface of each layer of filling layer and extended to the top surface of the corresponding layer of steps to form an interlayer geotechnical pipe network; for the interlayer geotechnical pipe network, the high polymer slurry is injected The grout forms the interlayer grouting ge...

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Abstract

The invention discloses a construction method of a high-polymer grouting-reinforced antisettling widened roadbed. The method is characterized by arranging a geotechnical engineering pipe network; the geotechnical engineering pipe network is a rectangular grid composed of PVC (polyvinyl chloride) pipes arranged in an array mode; the PVC pipes in the rectangular grid communicate with each other; the inside of the geotechnical engineering pipe network is respectively provided with a grouting hole and a vent hole which extend convexly upwards, and a grout passing hole which extends convexly downwards; the geotechnical engineering pipe network is laid in the fill stratum to form the fill stratum geotechnical engineering pipe network; the high-polymer grout is injected into the fill stratum geotechnical engineering pipe network through the grouting hole to form the fill stratum grouted geotechnical engineering pipe network; and the high-polymer grout is also injected into the vertical column hole formed in the fill stratum through the grout passing hole to form the vertical reinforcing column. The method enhances the lateral communication between the new and old road embankments, and effectively controls the differential settlement, so that the new and old roadbeds are combined more firmly and can not easily slump.

Description

technical field [0001] The invention relates to a construction method for embankment widening in road widening and reconstruction, more specifically a construction method for high polymer grouting to reinforce and prevent subsidence to widen roadbeds. Background technique [0002] With the continuous and rapid development of the national economy, the demand for road transportation in my country is increasing year by year, and the traffic flow of some existing roads has reached saturation. development needs. [0003] Roadbed widening is the main way to expand the capacity of existing highways. Due to the differences and interactions between the new and old subgrades, road diseases caused by widening of subgrades and overall pavement performance degradation are quite common in practical engineering, seriously affecting driving safety and comfort. In the prior art, the main problems of embankment widening include: [0004] 1. Differential settlement: Under the action of the o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C3/04
CPCE01C3/04
Inventor 刘凯梁威卢林金灿王芳谢泓州黄思路张祥李瑶
Owner 江苏建通绿色工程有限公司
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