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Treatment method for soft soil foundation construction road

A treatment method and soft soil foundation technology, which is applied in the field of soft soil foundation construction road treatment, can solve problems such as failure to meet construction requirements, achieve the effect of low construction difficulty, low project cost, and meet project progress

Active Publication Date: 2014-03-05
SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The purpose of the present invention is to: provide a kind of processing method of soft soil foundation construction road, solve the technical problem that some existing soft soil foundation adopts the current construction method and can't meet the construction requirement, thereby can effectively solve the problems existing in the above-mentioned prior art. The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Construction status:

[0038] 1. Layer of muddy soil (flow plastic-soft plastic): distributed throughout the site, with an average thickness of 9m in the main factory area, more than 9m in other areas, and up to 28m in some areas. The soil layer has high water content, large void ratio, high compressibility, low bearing capacity and poor permeability. The calculation of the pile foundation does not consider the lateral resistance, but the negative friction resistance; this layer cannot be used as the bearing layer of any building, and the foundation needs to be treated.

[0039] 2. Layer of plastic-like clay sandwiched with slightly dense silt (plastic-hard plastic): the general thickness is 7-10m, and a few 16-18m, which can provide side friction resistance for pile foundations, and should not be used as pile-end bearing layer for important buildings , the layer is more penetrable.

[0040] 3. Layer of silt layer (compact): It can be used as the pile end bearing laye...

Embodiment 2

[0053] Example 2: Applied to the third phase of the coastal power plant, since the first phase of the coastal area has already built access roads, this project does not involve the construction of temporary access roads, and only needs to solve the problem of the soft soil foundation in the main workshop area and surrounding roads when the construction machines are working. The processing method similar to Embodiment 1 meets the requirements of cost and construction period.

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Abstract

The invention discloses a treatment method for a soft soil foundation construction road. The treatment method comprises the following steps: I. draining and airing; II. driving bamboo piles, vertically inserting the bamboo piles with the length of 3-4m into construction soil at each interval of 0.2-0.5m in a matrix manner, wherein the pile driving range comprises a road surface and positions 1.5m away from two sides of the road surface; III. horizontally laying bamboo rafts into the gaps of the vertical bamboo piles, wherein each bamboo raft is formed by bundling a plurality of bamboo sheets; IV. filling soil and broken stones; V. horizontally laying bamboo rafts again, then filling soil and broken stone again; and VI. rolling and compacting for a circle by a carrier vehicle with the load of 15T, then filling soil and broken stones, and then performing compaction treatment again. According to the treatment method for the soft soil foundation construction road, by adopting the bamboo piles and bamboo materials as materials, not only can the construction cost be lowered, but also the effect of relieving and dispersing pressure can be achieved, the treatment method can meet the construction demand of the soft soil foundation road, is low in construction cost, and meets the demand of construction progress.

Description

technical field [0001] The invention relates to a processing method for road construction on soft ground, and belongs to the technical field of road construction. [0002] Background technique [0003] The definition of soft soil foundation in my country's road industry standards refers to weak soil layers with low strength and high compression, most of which contain certain organic substances. Japan's high-grade highway design code defines it as: mainly composed of loose soil with a large content of fine particles such as clay and silt, organic soil with large pores, peat, and loose sand. Therefore, the soft soil foundation mainly refers to the foundation with high groundwater level, poor stability of fill and structures on it and prone to settlement. [0004] At present, several commonly used methods for soft soil foundation road treatment are as follows: [0005] 1. Excavation and replacement method: When the thickness of the weak soil layer is not very large, part or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/04E01C3/06E01C21/00
Inventor 房广善龙剑锋郭剑辉王静涛
Owner SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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