Improved Permafrost Protection Using Air Convection and Ventilated Shoulder Cooling Systems

Goering, Douglas J.; University of Alaska Fairbanks. Institute of Northern Engineering

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Improved Permafrost Protection Using Air Convection and Ventilated Shoulder Cooling Systems

2022-11-01
By Goering, Douglas J.

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English

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Creators:

Goering, Douglas J.
Corporate Creators:

University of Alaska Fairbanks. Institute of Northern Engineering
Corporate Contributors:

Alaska. Department of Transportation and Public Facilities. Research and Technology Transfer ; United States. Department of Transportation. Federal Highway Administration

Alaska. Department of Transportation and Public Facilities. Research and Technology Transfer ; United States. Department of Transportation. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Air Convection Embankment Cooling Systems Design Embankments Foundation Soils Permafrost Road Shoulders Ventilated Shoulder Ventilation Systems
Publication/ Report Number:

FHWA-AK-RD-4000(185)
Resource Type:

Tech Report
Geographical Coverage:

Alaska ; United States

Alaska ; United States Less -
Edition:

Final Report
Corporate Publisher:

Alaska. Department of Transportation and Public Facilities. Research and Technology Transfer
Abstract:

This report focuses on the effectiveness of air convection embankments (ACE) and ventilated shoulder (VS) cooling systems designed to cool foundation soils and preserve permafrost beneath roadway embankments. The four main sections of the report include a literature review, an analysis of field data from the Thompson Drive Experimental Feature near Fairbanks, an analysis of data from the Alaska Highway Dot Lake Experimental Feature site, and a discussion of techniques for modeling ACE and VS structures using the GeoSlope Temp/W modeling package. Fifteen years (2005-2020) of data from the Thompson Drive site are analyzed using contour plots of average annual temperatures within the embankment and underlying foundation soils along with time series of temperature behavior at specific locations throughout the embankment test sections. Similarly, data from the Alaska Highway site is analyzed over a three-year period (June 2017 to May 2020) by examining average annual temperatures at an array of measurement points within the embankment test sections and underlying soils. In all cases the data indicates a strong overall cooling influence, particularly in the layers underlying the VS structures.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:265d04a937829fc6bd2b5e8d1eaace65457837aea7cfbe2d7155fad421c68659
Download URL:

https://rosap.ntl.bts.gov/view/dot/66300/dot_66300_DS1.pdf
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Improved Permafrost Protection Using Air Convection and Ventilated Shoulder Cooling Systems

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