The effect of soil cohesion and friction angles on reverse faults

Severe faults have caused many earthquakes around the world throughout history. More recently, earthquakes have occurred in Taiwan, China (Chi-Chi fault), and elsewhere, causing loss of lives and destroying many buildings and structures. These tectonic movements have gained attention from engineers,...

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Main Authors: Ghafari, Mehdi, Nahazanan, Haslinda, Md Yusoff, Zainuddin, Ghiasi, Vahed
Format: Article
Language:English
Published: Springer 2021
Online Access:http://psasir.upm.edu.my/id/eprint/95402/
http://psasir.upm.edu.my/id/eprint/95402/1/The%20effect%20of%20soil%20cohesion%20and%20friction%20angles%20on%20reverse%20faults.pdf
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author Ghafari, Mehdi
Nahazanan, Haslinda
Md Yusoff, Zainuddin
Ghiasi, Vahed
author_facet Ghafari, Mehdi
Nahazanan, Haslinda
Md Yusoff, Zainuddin
Ghiasi, Vahed
author_sort Ghafari, Mehdi
building UPM Institutional Repository
collection Online Access
description Severe faults have caused many earthquakes around the world throughout history. More recently, earthquakes have occurred in Taiwan, China (Chi-Chi fault), and elsewhere, causing loss of lives and destroying many buildings and structures. These tectonic movements have gained attention from engineers, and in the past 15 years, the focus has been on faulting mechanisms. In this study, a physical model (1 g) was fabricated and used to evaluate the impact of a reverse fault in a field with a tunnel. In the 1 g model, researchers installed additional gauges on the tunnel, so that all the displacements could be adjusted, and all the responses could be monitored during faulting. An experimental study of various soil properties (cohesion and friction angles) in reverse faults on the tunnel lining were carried out and are described herein. A comparison of results for different levels of soil cohesion revealed that it can dramatically reduce the displacement by as much as 40%, and that friction angles of 27° can record approximately 60% more displacements than at 37°. Furthermore, a comparison of fault angles of 30° and 60° indicates that the displacements can be different by more than 43% in cohesionless soil and about 64% for a friction angle of 27°.
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spelling upm-954022022-12-28T08:35:20Z http://psasir.upm.edu.my/id/eprint/95402/ The effect of soil cohesion and friction angles on reverse faults Ghafari, Mehdi Nahazanan, Haslinda Md Yusoff, Zainuddin Ghiasi, Vahed Severe faults have caused many earthquakes around the world throughout history. More recently, earthquakes have occurred in Taiwan, China (Chi-Chi fault), and elsewhere, causing loss of lives and destroying many buildings and structures. These tectonic movements have gained attention from engineers, and in the past 15 years, the focus has been on faulting mechanisms. In this study, a physical model (1 g) was fabricated and used to evaluate the impact of a reverse fault in a field with a tunnel. In the 1 g model, researchers installed additional gauges on the tunnel, so that all the displacements could be adjusted, and all the responses could be monitored during faulting. An experimental study of various soil properties (cohesion and friction angles) in reverse faults on the tunnel lining were carried out and are described herein. A comparison of results for different levels of soil cohesion revealed that it can dramatically reduce the displacement by as much as 40%, and that friction angles of 27° can record approximately 60% more displacements than at 37°. Furthermore, a comparison of fault angles of 30° and 60° indicates that the displacements can be different by more than 43% in cohesionless soil and about 64% for a friction angle of 27°. Springer 2021-04-12 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/95402/1/The%20effect%20of%20soil%20cohesion%20and%20friction%20angles%20on%20reverse%20faults.pdf Ghafari, Mehdi and Nahazanan, Haslinda and Md Yusoff, Zainuddin and Ghiasi, Vahed (2021) The effect of soil cohesion and friction angles on reverse faults. Earthquake Engineering and Engineering Vibration, 20 (-). 329 - 334. ISSN 1671-3664; ESSN: 1993-503X https://link.springer.com/article/10.1007/s11803-021-2023-x 10.1007/s11803-021-2023-x
spellingShingle Ghafari, Mehdi
Nahazanan, Haslinda
Md Yusoff, Zainuddin
Ghiasi, Vahed
The effect of soil cohesion and friction angles on reverse faults
title The effect of soil cohesion and friction angles on reverse faults
title_full The effect of soil cohesion and friction angles on reverse faults
title_fullStr The effect of soil cohesion and friction angles on reverse faults
title_full_unstemmed The effect of soil cohesion and friction angles on reverse faults
title_short The effect of soil cohesion and friction angles on reverse faults
title_sort effect of soil cohesion and friction angles on reverse faults
url http://psasir.upm.edu.my/id/eprint/95402/
http://psasir.upm.edu.my/id/eprint/95402/
http://psasir.upm.edu.my/id/eprint/95402/
http://psasir.upm.edu.my/id/eprint/95402/1/The%20effect%20of%20soil%20cohesion%20and%20friction%20angles%20on%20reverse%20faults.pdf