Experimental and Numerical Investigation of Lateral Earth Pressures Generated from Repeated Loading
Numerous geotechnical structures may be subjected to low-frequency cyclic movements over their design lives. A prime example is the case of integral bridge abutments, which have been shown to expand and contract into and away from the retained soil due to seasonal temperature changes. The stresses generated within the retained soil mass for these structures have been reported to increase with increasing number of cycles, a process that has been referred to as earth pressure ratcheting. To further investigate the extent of this increase in lateral earth pressure over time, a laboratory experiment was conducted involving a moving wall. The wall was repetitively displaced at pre-defined amplitudes into and away from the retained soil mass in a rotational mode. One sidewall of the container holding the soil was constructed to be transparent to allow for visualization of the shear bands that develop during passive and active stress states. The experimental results were used to calibrate a finite element model suitable to extend the performance evaluation considering a wider range of parameters. The comparison between measured and numerically predicted results indicates that lateral earth pressure and total thrust acting upon the wall can be accurately estimated at specified wall displacements.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784481608
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Supplemental Notes:
- © 2018 American Society of Civil Engineers.
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Corporate Authors:
American Society of Civil Engineers
New York, New York United States -
Authors:
- Walter, Jakob R
- Morsy, Amr M
- Zornberg, Jorge G
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Conference:
- IFCEE 2018
- Location: Orlando Florida, United States
- Date: 2018-3-5 to 2018-3-10
- Publication Date: 2018-6
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 158-168
- Monograph Title: IFCEE 2018: Developments in Earth Retention, Support Systems, and Tunneling
Subject/Index Terms
- TRT Terms: Bridge abutments; Earth pressure; Earth walls; Finite element method; Jointless bridges; Laboratory tests; Numerical analysis; Repeated loads
- Subject Areas: Bridges and other structures; Geotechnology; Highways;
Filing Info
- Accession Number: 01686083
- Record Type: Publication
- ISBN: 9780784481608
- Files: TRIS, ASCE
- Created Date: Nov 20 2018 10:24AM