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Title:

Evaluation of effectiveness of liquefaction ground improvement based on random field theory from CPTU data

Accession Number:

01551199

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Vibro-compaction is a technique most commonly used to improve soil in situ. Piezocone penetration test (CPTU) allows for the soil profiles to be obtained from the measurements of cone tip resistance qt, sleeve friction ƒs, and pore pressure u₂. To evaluate the geotechnical characterization of liquefaction foundation improved by the vibro-compaction method, a set of piezocone penetration tests were performed on the ground unimproved and improved in the construction activity of highway in Suqian, China. Based on the CPTU data, the changes in relative density, effective frictional angle and compressive modulus were assessed from random field model. Given the relatively high sampling frequency of the cone tip resistance in the vertical direction, the vertical random field model parameters were determined and discussed for the ground unimproved and improved by employing the random field theory. It is shown that relative density, effective frictional angle and compressive modulus have improved in different degrees, and the soil profiles become more homogeneous after the ground improved.

Supplemental Notes:

This paper was sponsored by TRB committee AFP30 Soil and Rock Properties. Alternate title: Evaluation of Effectiveness of Liquefaction Ground Improvement Based on Random Field Theory from Piezocone Penetration Test Data.

Monograph Accession #:

01550057

Report/Paper Numbers:

15-3963

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Lin, Jun
Cai, Guojun
Liu, Songyu
Puppala, Anand J
Zou, Haifeng

Pagination:

12p

Publication Date:

2015

Conference:

Transportation Research Board 94th Annual Meeting

Location: Washington DC, United States
Date: 2015-1-11 to 2015-1-15
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Geographic Terms:

Suqian (China)

Subject Areas:

Construction; Geotechnology; Highways; I42: Soil Mechanics; I52: Construction of Pavements and Surfacings

Source Data:

Transportation Research Board Annual Meeting 2015 Paper #15-3963

Files:

TRIS, TRB, ATRI

Created Date:

Dec 30 2014 1:18PM