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Thesis_20171110_Yixiang Li.pdf (2.24 MB)
ETD Abstract Container
Abstract Header
Numerical modeling of supported excavations considering soil spatial variability
Author Info
Li, Yixiang, Li
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=akron1510322541966921
Abstract Details
Year and Degree
2017, Master of Science in Engineering, University of Akron, Civil Engineering.
Abstract
In design of supported excavation, many codes and criteria can be utilized to insure the usability and stability of excavation structure. However, due to the variation and spatial variability in soil parameters, the deterministic analysis in codes may not always be safe. This paper considers the uncertainties of standard penetration blow count ((N1)60) and execute reliability analysis on the geotechnical and structural responses in supported excavation in sand, including lateral wall deflection, bending moment in wall, shear force in wall and strut force. Random field theory is adopted to generate values of (N1)60 considering effect of variation and spatial variability on sand layers. Different levels of COV and scale of fluctuation are considered to simulate various scenarios in the real field. Random finite element method and Monte-Carlo simulation are used to execute reliability analysis and the failure probabilities of multiple failure modes are estimated. An automation procedure is purposed to enhance the efficiency and accuracy in parameters input and results output. The importance and influence of spatial variability on the design of supported excavation are shown according to the analysis results.
Committee
Zhe Luo (Advisor)
Junliang Tao (Committee Member)
Qindan Huang (Committee Member)
Pages
73 p.
Subject Headings
Civil Engineering
Keywords
Supported excavation, Random finite element method, Reliability analysis, Spatial variability, Failure probability
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Citations
Li, Li, Y. (2017).
Numerical modeling of supported excavations considering soil spatial variability
[Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1510322541966921
APA Style (7th edition)
Li, Li, Yixiang.
Numerical modeling of supported excavations considering soil spatial variability.
2017. University of Akron, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=akron1510322541966921.
MLA Style (8th edition)
Li, Li, Yixiang. "Numerical modeling of supported excavations considering soil spatial variability." Master's thesis, University of Akron, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1510322541966921
Chicago Manual of Style (17th edition)
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Document number:
akron1510322541966921
Download Count:
820
Copyright Info
© 2017, some rights reserved.
Numerical modeling of supported excavations considering soil spatial variability by Yixiang Li Li is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by University of Akron and OhioLINK.