Chapter
Jul 21, 2016
Performance Evaluation of Pier Foundation Excavations at an Existing Freeway Embankment
Publication: Geo-China 2016
Abstract
The capacity of the Wuku-Yangmei section of Freeway No.1 is not sufficient to cater for developing the Taoyuan Aerotropolis. To provide more traffic lanes to the existing freeway, a series of pier foundations at its embankment are constructed for the Wuku-Yangmei Overpass which is to ease peak-hour congestion between Taipei and Taoyuan. Soil nail shoring system and an alternative shoring method with ring beam at slope portion and composite shoring system at foundation portion are applied to Piers B7 and C15, respectively, to compare their surface tension crack, lateral slope displacement, and lateral displacement-time curve. Field measurements indicate that the soil nail shoring system fails to limit slope lateral displacement leading to the extensive slope sliding incident. 3D finite element (FE) analyses using the parameters that are back-calculated by comparing the lateral displacement-depth curves to the inclinometer data have been conducted. The same parameters have been brought forward to the case of the alternative shoring. The modeling results are found to be in agreement with the field measurements and the shear strain profile may give a better understanding of the sliding surface position.
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© 2016 American Society of Civil Engineers.
History
Published online: Jul 21, 2016
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ASCE Technical Topics:
- Construction engineering
- Construction methods
- Continuum mechanics
- Displacement (mechanics)
- Drilled pier foundations
- Engineering mechanics
- Excavation
- Foundations
- Geomechanics
- Geotechnical engineering
- Highway and road management
- Highway transportation
- Highways and roads
- Hydraulic engineering
- Hydraulic structures
- Infrastructure
- Piers
- Ports and harbors
- Retaining structures
- Shoring
- Slopes
- Soil nailing
- Solid mechanics
- Structural mechanics
- Transportation engineering
- Water and water resources
Authors
Affiliations
Professor, Dept. of Civil Engineering, National Taipei Univ. of Technology (Taipei Tech), 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, Taiwan, R.O.C. E-mail: [email protected]
Formerly Research Associate, College of Engineering, National Taipei Univ. of Technology (Taipei Tech), 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, Taiwan, R.O.C. E-mail: [email protected]
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