Location
San Diego, California
Presentation Date
26 May 2010, 4:45 pm - 6:45 pm
Abstract
Fault rupture propagation in free fields lays the ground for an understanding of bedrock-soil-structure interactions. Propagation behaviors in dry soil have long been investigated. Localized shear bands have been identified to be the obvious source of failure in dry soils at depth. In addition, numerous subsurface fractures have been found in the field. However, the influence of subsurface fractures in the soil on future seismic faults has received little attention, especially in complex soils. In this study, three centrifuge tests were conducted to investigate the influence of pre-existing fractures on ground deformations in three multilayered soils: three-layered, five-layered and nine-layered soils. The pre-existing fractures in these tests started from the bedrock fault line and tilted with a dip slip angle of 70° with respect to the horizontal plane. In this paper, both of the ground surface settlement and the bedrock fault movements are presented. Post test examination of the cracks on model surface are also described and compared to studies that did not consider the influence of pre-existing fractures.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2010 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Hu, P.; Ding, Y. H.; Cai, Q. P.; Luo, G. Y.; Ng, C. W. W.; and Hou, Y. J., "Centrifuge Modeling of the Influence of Pre-Existing Fractures in Multilayered Soils on Ground Deformations" (2010). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 13.
https://scholarsmine.mst.edu/icrageesd/05icrageesd/session01b/13
Included in
Centrifuge Modeling of the Influence of Pre-Existing Fractures in Multilayered Soils on Ground Deformations
San Diego, California
Fault rupture propagation in free fields lays the ground for an understanding of bedrock-soil-structure interactions. Propagation behaviors in dry soil have long been investigated. Localized shear bands have been identified to be the obvious source of failure in dry soils at depth. In addition, numerous subsurface fractures have been found in the field. However, the influence of subsurface fractures in the soil on future seismic faults has received little attention, especially in complex soils. In this study, three centrifuge tests were conducted to investigate the influence of pre-existing fractures on ground deformations in three multilayered soils: three-layered, five-layered and nine-layered soils. The pre-existing fractures in these tests started from the bedrock fault line and tilted with a dip slip angle of 70° with respect to the horizontal plane. In this paper, both of the ground surface settlement and the bedrock fault movements are presented. Post test examination of the cracks on model surface are also described and compared to studies that did not consider the influence of pre-existing fractures.
