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Wet and soft soil foundation treatment method

A technology for foundation treatment and wet soft soil, which is applied in soil protection, infrastructure engineering, roads, etc., and can solve the problems of high cost and large treatment depth.

Active Publication Date: 2014-10-08
JINAN MUNICIPAL ENG DESIGN & RES INSITITUTE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] For foundation treatment in areas with thicker silt layers, the high-vacuum compaction method is also called "low-level layered preloading high-vacuum compaction method". This method has a large treatment depth, but the cost is slightly higher

Method used

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Embodiment Construction

[0058] The present invention will be described in detail below with the method of Binhe Road Subgrade Treatment in Jiaozhou Bay Industrial New Area:

[0059] 1. Project overview

[0060] The Jiaozhou Bay New Industrial Zone is located to the east of the Jiaozhou Bay Ring Expressway, to the west of the coastline of Jiaozhou Bay, and to the Yanghe border in the south, with a planned area of ​​about 3,315.87 hectares.

[0061] The Binhe Road in this design is located in the middle of the new district. It is planned to be north of the Yuejin River. The road is east-west. The design scope is from the West Ring Road to the Haibin Road.

[0062] The planned road section is in the form of a slab, with a roadway width of 41 meters, which can be used to divide motor vehicle and non-motor vehicle lanes; sidewalk width is 2×3 meters, and green belt width is 2×6.5 meters, totaling 60 meters.

[0063] The location of the proposed Binhe Road is salt ponds and breeding ponds, without buildin...

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PUM

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Abstract

The invention discloses a wet and soft soil foundation treatment method which comprises the steps of 1, backfilling completely within the roadbed width range; 2, before roadbed construction, firstly, removing surface water, and then removing the surface layer salinized soil and surface organic matter of a construction region; 3, backfilling gravel soil within the treatment range, and carrying out primary rolling; after rolling is finished, leveling to form a cross slope; 4, excavating two trapezoid drainage ditches respectively at the two sides of a roadbed; 5, laying a plastic drainage plate; 6, dynamic compaction, compacting by points for twice and fully compacting for once; 7, after dynamic compaction treatment, rearranging the roadbed, and cleaning the overground part of the top of the drainage plate; laying a middle coarse sand cushion layer as a drainage channel, wherein the gradient of the middle coarse sand cushion layer is equal to that of the roadbed; placing a bending part of the plastic drainage plate in the center of the sand cushion layer to enable the bending part to be communicated with the sand cushion layer; 8, backfilling gravel soil onto the middle coarse sand cushion layer; 9, after the roadbed is finished, laying gravel on the surface layer, rolling and compacting.

Description

technical field [0001] The invention discloses a wet and soft soil foundation treatment method. Background technique [0002] At present, in some coastal or riverside areas, the foundation soil is divided into 8 layers from top to bottom: [0003] ①Plain fill: yellowish brown, loose, slightly wet to very wet, mainly composed of pebbles and gravel, which is new fill. [0004] ② Layer of muddy silty clay: gray-yellow-gray, fluid-soft plastic, medium dry strength, medium toughness, fishy smell, containing sporadic broken shells. [0005] ③ layer of muddy silt, gray, loose, saturated, medium shaking response, dull response, low dry strength, low toughness, fishy smell, containing a small amount of fine sand and broken shells. [0006] ④ layer of muddy silty clay: gray, soft plastic, medium dry strength, medium toughness, fishy smell, containing sporadic broken shells. The field is widely distributed; [0007] ⑤ layer of silty clay: gray, plastic, medium dry strength, medium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/04E02D3/10
Inventor 彭侠于芳泉张立涛
Owner JINAN MUNICIPAL ENG DESIGN & RES INSITITUTE GRP
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