Prediction of embankment settlement over soft soils.

Vipulanandan, Cumaraswamy; Bilgin, O.; Y Jeannot Ahossin Guezo; Vembu, K.; and Erten, M. B.; Center for Innovative Grouting Materials and Technology; University of Houston. Department of Civil and Environmental Engineering

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Prediction of embankment settlement over soft soils.

2009-06-01
By Vipulanandan, Cumaraswamy ; Bilgin, O. ; Y Jeannot Ahossin Guezo ; ...

[PDF-3.43 MB]

English

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Creators:

Vipulanandan, Cumaraswamy ; Bilgin, O. ; Y Jeannot Ahossin Guezo ; Vembu, K. ; and Erten, M. B.

Vipulanandan, Cumaraswamy ; Bilgin, O. ; Y Jeannot Ahossin Guezo ; Vembu, K. ; and Erten, M. B. Less -
Corporate Creators:

Center for Innovative Grouting Materials and Technology ; University of Houston. Department of Civil and Environmental Engineering

Center for Innovative Grouting Materials and Technology ; University of Houston. Department of Civil and Environmental Engineering Less -
Corporate Contributors:

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Embankment Foundations Field Tests Penetrometer Settlement (Structures) Shear Strength Of Soils--Testing Soil Consolidation Test Soil Penetration Test Soils--Texas--Testing
Publication/ Report Number:

FHWA/TX-09/0-5530-1
Resource Type:

Tech Report
Geographical Coverage:

Texas
Edition:

Technical report, Sept. 2005-Oct. 2008
Corporate Publisher:

Center for Innovative Grouting Materials and Technology
Abstract:

The objective of this project was to review and verify the current design procedures used by TxDOT

to estimate the total and rate of consolidation settlement in embankments constructed on soft soils. Methods

to improve the settlement predictions were identified and verified by monitoring the settlements in two

highway embankments over a period of 20 months. Over 40 consolidation tests were performed to quantify

the parameters that influenced the consolidation properties of the soft clay soils. Since there is a hysteresis

loop during the unloading and reloading of the soft CH clays during the consolidation test, three

recompression indices (Cr1, Cr2, Cr3) have been identified with a recommendation to use the recompression

index Cr1 (based on stress level) to determine the settlement up to the preconsolidation pressure. Based on the

laboratory tests and analyses of the results, the consolidation parameters for soft soils were all stress

dependent. Hence, when selecting representative parameters for determining the total and rate of settlement,

expected stress increases in the ground should be considered. Also the 1-D consolidation theory predicted

continuous consolidation settlement in both of the embankments investigated. The predicted consolidation

settlements were comparable to the consolidation settlement measured in the field. Constant Rate of Strain

test can be used to determine the consolidation parameters of the soft clay soils. The effect of Active Zone

must be considered in designing the edges of the embankments and the retaining walls.
Format:

PDF
Funding:

0-5530
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:a491f963c8d7be6aff9a2f2696217d54fa2d686935635e292bab86fdbb2e3c72
Download URL:

https://rosap.ntl.bts.gov/view/dot/16765/dot_16765_DS1.pdf
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Prediction of embankment settlement over soft soils.

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