Chapter
Apr 26, 2012
Case History: Micropile Use for Temporary Excavation Support
Authors: Paul R. Macklin, Donald Berger, William Zietlow, Wayne Herring, and Joshua CullenAuthor Affiliations
Publication: GeoSupport 2004: Drilled Shafts, Micropiling, Deep Mixing, Remedial Methods, and Specialty Foundation Systems
Abstract
Highway construction projects in the mountains typically present access challenges and slope stability risks during construction. Long narrow working corridors restrict activities complicating construction staging and lengthening schedules. On a recent Colorado Department of Transportation (CDOT) project near Aspen, Colorado, a micropile shoring system was built in-lieu of temporary tieback walls to improve on-site workability. The micropile shoring system consisted of approximately 7,400 square meters of retained face along 1,600 linear meters of wall with a maximum-shored height of 7.5 meters and an average height of 4.5 meters. Micropile shoring design methodologies are presented and compared to field measurements of wall performance collected from inclinometers and strain gauges.
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Information
Published In
GeoSupport 2004: Drilled Shafts, Micropiling, Deep Mixing, Remedial Methods, and Specialty Foundation Systems
Pages: 653 - 661
Copyright
© 2004 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Case studies
- Construction engineering
- Construction industry
- Construction management
- Construction methods
- Engineering fundamentals
- Excavation
- Foundations
- Geology
- Geomorphology
- Geotechnical engineering
- Infrastructure construction
- Methodology (by type)
- Micro piles
- Mountains
- Pile foundations
- Piles
- Project management
- Research methods (by type)
- Shoring
- Structural engineering
- Structural members
- Structural systems
- Walls
Authors
Affiliations
Paul R. Macklin
P.E.
M.ASCE
Geotechnical Eng., Yenter Companies, Inc., 20300 West Highway 72, Arvada, CO 80007
Donald Berger
P.E.
M.ASCE
Geotechnical Eng., Yenter Companies, Inc., 1512 Grand Ave., Suite #104, Glenwood Springs, CO 81601
William Zietlow
P.E.
Geotechnical Eng., Yeh & Associates, 2910 Tejon Street, Englewood, CO 80110
Wayne Herring
Geotechnical Eng., ARM Group Inc., 1129 West Governor Road, Hershey, PA 17033
Joshua Cullen
Engineer, Colorado Department of Transportation, 25011 SH82, Snowmass, CO 81654
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