Volume 7, Issue 1 (9-2022)                   NMCE 2022, 7(1): 57-69 | Back to browse issues page

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Shojaeian A, Askari F, Farahani S. Seismic Reliability-Based Design Versus Safety-Factor Based Design of Shallow Foundations Near a slope. NMCE. 2022; 7 (1) :57-69
URL: http://nmce.kntu.ac.ir/article-1-427-en.html
Associate Professor, Geotechnical Engineering Research Center, International Institute of Earthquake Engineering and Seismology (IIEES), Tehran, IRAN. , askari@iiees.ac.ir
Abstract:   (409 Views)
In this study, the stability of the foundation near a slope is investigated through a typical example of designing a shallow foundation. Foundation stability is typically evaluated through the bearing capacity’s factor of safety and the reliability of the design, which depicts a more realistic perspective of design safety. Although an increase in the bearing capacity of the foundation leads to a subsequent increase in the safety factor and reliability index, a monotonically increasing functional relationship between the safety factor and reliability does not exist. This study investigates the effects of the foundation and slope properties on the Reliability-based Design (RBD) and Safety-Factor Based Design (SBD). Also, some valuable hints for practical engineers” who are not familiar with reliability concepts” are presented to achieve a more reliable SBD. The results show that it is vital to consider how to increase the bearing capacity in the SBD methods. For example, in cohesive-frictional soils, by changing the embedment depth of the foundation (df), and the distance between the foundation and slope crest (x) to reach the target safety factor, we can obtain a more reliable SBD.
Full-Text [PDF 1076 kb]   (75 Downloads)    
Type of Study: Research | Subject: General
Received: 2021/09/4 | Revised: 2022/01/28 | Accepted: 2022/03/3 | ePublished ahead of print: 2022/05/18

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