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Construction method for reinforcing and rolling soft soil subgrade by aid of impact-type road roller

A technology of soft soil roadbed and impact rolling, which is applied to roads, roads, buildings, etc., can solve the problems of not meeting the technical requirements of construction and difficult compaction, and achieve shortened construction time, compact connection, and improved integrity and bearing capacity effect of ability

Inactive Publication Date: 2012-07-25
XINJIANG BEIXIN ROAD & BRIDGE GRP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Especially for the geological structure with gravel soil and high groundwater level, the traditional construction technology is difficult to compact and does not meet the technical requirements of construction.

Method used

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Embodiment Construction

[0013] Preferred embodiments of the present invention are described below, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0014] The construction method includes the following steps:

[0015] (1) Select the section that can represent the subgrade construction requirements of this contract section to carry out the construction of the test section, and obtain the best mechanical combination and related technical parameters to guide large-scale construction. This construction method selects the representative K219+050-K219+200 section as the test section of the soft soil subgrade impact rolling construction in this tender section. The subgrade filling height of this section is 7.6 meters and the subgrade width is 43 meters.

[0016] (2) Excavate the soft soil road base, excavate the soft soil within the subgrade replacement range, and tr...

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Abstract

The invention discloses a construction method for reinforcing and rolling a soft soil subgrade by the aid of an impact-type road roller. The construction method includes the steps: (1) selecting a test road section for construction and determining subgrade construction parameters including soil laying thickness, rolling times, the frequency of the impact-type road roller and the water content of soil; (2) excavating soft soil of the subgrade and excavating a subgrade base into designed elevation; (3) determining the water content of gravel and selecting a packing gravel site according to relevant provisions; (4) feeding materials to the subgrade, layering gravel filling amount according to the lay-down thickness and controlling feeding volume to be one meter on site; (5) neatly paving and initially pressing the subgrade; (6) setting a settlement observation point, setting out an elevation laying point and recording elevation; (7) performing impactive rolling by the aid of an impact compactor; (8) doubly controlling compactness detection by means of differential settlement and a construction process; and (9) trimming the compacted subgrade to finish construction. The construction method is simple in process, working procedures are compactly linked, engineering quality is improved, and cost is reduced.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a roadbed construction method. Background technique [0002] With the development of road construction, the standards for subgrade compaction are getting higher and higher, and at the same time, higher requirements are put forward for the safety of existing lines. Especially for the geological structure with gravel soil and high groundwater level, the traditional construction technology is difficult to compact, which does not meet the technical requirements of construction. If the traditional layered filling method of conventional natural gravel subgrade is used for construction, the degree of compaction is used as the main control index of construction, and it is required that every 2000m 2 Use the sand filling method to detect 8 points, and the bottom of the sand filling should be on the same plane as the compacted bottom. The construction period is long, and the set...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/04
Inventor 朱建国陈荣凯蔡志舰段辉林刘东鲁张卫国杨建松王奋琪
Owner XINJIANG BEIXIN ROAD & BRIDGE GRP
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