Method for treating soft soil foundation through combination of bagged grouting gravel pile and vacuum preloading

A technology of soft soil foundation and gravel piles, applied in soil protection, foundation structure engineering, construction, etc., can solve the problems of low strength and inability to meet the needs of the plug-in machine for walking

Inactive Publication Date: 2016-01-13
HUAZHONG UNIV OF SCI & TECH
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the strength of this type of foundation is too low to meet the needs of construction machinery such as inserti

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for treating soft soil foundation through combination of bagged grouting gravel pile and vacuum preloading
  • Method for treating soft soil foundation through combination of bagged grouting gravel pile and vacuum preloading
  • Method for treating soft soil foundation through combination of bagged grouting gravel pile and vacuum preloading

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawings and examples of implementation.

[0027] The invention provides a method for treating soft ground with bagged slurry-solid gravel piles combined with vacuum preloading, such as Figure 1 ~ Figure 3 As shown, it includes four links: shallow vacuum drainage pretreatment, bagged gravel pile construction, deep vacuum preloading and bagged gravel pile grouting.

[0028] The method of treating soft soil foundation with bagged slurry-solid gravel pile combined with vacuum preloading is applied to the treatment of a new dredging soft soil foundation. The specific steps are as follows:

[0029] 1) On the soft soil foundation 1, one layer of woven fabric 3, one layer of geogrid 4 and one layer of non-woven fabric 5 are manually laid in order to form a working cushion, and then shallow vertical plastic drainage boards 6 are artificially inserted, and vertical filter plates are arranged ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Transverse tensile strengthaaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention provides a method for treating a soft soil foundation through combination of a bagged grouting gravel pile and vacuum preloading. The method comprises the steps that (1) shallow vacuum drainage pretreatment is conducted on the soft soil foundation to form a construction machinery work platform with a certain strength and bearing capacity; (2) bagged grouting gravel pile construction is carried out through an immersed tube method, and grouting tubes are embedded in the pile; (3) the bagged grouting gravel pile serves as a vertical drainage channel, and the deep soft soil foundation is treated through directly draining type vacuum preloading; and (4) grouting is conducted on the bagged grouting gravel pile through the embedded grouting tubes, the strength of a pile body is improved, and a rigid pile composite foundation is formed. By means of the method for treating the soft soil foundation through combination of the bagged grouting gravel pile and vacuum preloading, the purposes of economy and environmental protection are achieved, construction is easy and convenient, and a sand cushion is omitted; the method is applicable to treatment of a large-area ultra-soft clay foundation with the very high moisture content or a large-area new hydraulic fill mud foundation with the very high moisture content; the reinforcing efficiency is remarkable, the foundation treatment period can be substantially shortened, and the cost of construction is reduced.

Description

technical field [0001] The invention belongs to the technical field of foundation treatment, and relates to a method for treating large-area deep soft soil foundations, in particular to a method for treating soft soil foundations with bagged slurry-solid gravel piles combined with vacuum preloading. Background technique [0002] Vacuum drainage and preloading technology has the advantages of fast loading speed, no need for heaped fillers, and no foundation instability during loading. It has significant advantages and is currently widely used in land reclamation projects in coastal areas. However, because the strength of this type of foundation is too low to meet the needs of construction machinery such as inserting machines, and the depth of artificial inserting is limited, shallow pretreatment is generally required first. [0003] The bagged gravel pile is based on the problem that the strength of the soil around the pile in weak foundations is often not enough to form the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E02D3/10
Inventor 曹文昭郑俊杰张军鱼欢程钰诗
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap