0
Research Papers

Temperature Distribution in Mechanically Stabilized Earth Wall Soil Backfills for Design Under Elevated Temperature Conditions

[+] Author and Article Information
Andrew M. Kasozi

Department of Civil and
Environmental Engineering,
University of Nevada,
1664 North Virginia Street, Reno/MS257,
Reno, NV 89557
e-mail: akasozi@gmail.com

Raj V. Siddharthan

Professor of Civil Engineering
Department of Civil and
Environmental Engineering,
University of Nevada,
1664 North Virginia Street, Reno/MS257,
Reno, NV 89557
e-mail: siddhart@unr.edu

Rajib Mahamud

RASAER Lab,
Department of Mechanical Engineering,
University of South Carolina,
300 Main Street,
Columbia, SC 29208
e-mail: mahamud@email.sc.edu

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received August 11, 2014; final manuscript received November 24, 2014; published online January 13, 2015. Assoc. Editor: Samuel Sami.

J. Thermal Sci. Eng. Appl 7(2), 021004 (Jun 01, 2015) (9 pages) Paper No: TSEA-14-1188; doi: 10.1115/1.4029354 History: Received August 11, 2014; Revised November 24, 2014; Online January 13, 2015

Two-dimensional (2D) transient numerical thermal modeling was undertaken using ansys fluent v12.1 software to estimate distribution of soil backfill temperatures in a typical mechanically stabilized earth (MSE) wall. The modeling was calibrated using field-measured temperature data from the Tanque-Verde MSE wall in Tucson, Arizona (AZ) in which computed temperature data were found to be within ±5% of the field data. The calibrated model predictions for Las Vegas, Nevada (NV) showed an overall average soil backfill temperature of 34.3 °C relative to a maximum outside surface temperature of 51.6 °C. Such a high average soil backfill temperature calls for modification of design procedures since conventional designs are based on geosynthetic tensile strength determined at 20 °C.

FIGURES IN THIS ARTICLE
<>
Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

(a) Typical MSE wall structure and (b) 3D isometric view of wall schematic showing face panel and backfill reinforcing elements

Grahic Jump Location
Fig. 2

Laboratory tensile strength testing of unconditioned uniaxial HDPE geogrid: (a) universal testing machine; (b) environmental chamber; (c) test results (error bars represent ±1 standard deviation from the mean value)

Grahic Jump Location
Figure 3

(a) Photograph of Tanque-Verde MSE wall in Tucson, AZ; (b) wall cross section 26–30 showing field-measured temperature data (upper and lower data were taken in June 1986 and June 1996, respectively. Adapted from Ref. [7].

Grahic Jump Location
Figure 4

2D Transient heat flow analysis domain: (a) schematic/cross section through typical MSE wall; (b) sinusoidal temperature profile along external surfaces

Grahic Jump Location
Figure 5

Boundary conditions for field data recorded in June 1986

Grahic Jump Location
Figure 6

Correlation between ansys-computed and field-measured data

Grahic Jump Location
Figure 7

Boundary conditions for modeling soil backfill temperatures in Las Vegas

Grahic Jump Location
Figure 8

Thermal modeling results for Las Vegas, NV: (a) temperature distribution; (b) dectionwise variation of soil backfill temperatures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In