Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154548
Title: Decoupled reliability-based geotechnical design of deep excavations of soil with spatial variability
Authors: Liu, Wang-Sheng
Cheung, Sai Hung
Keywords: Engineering::Civil engineering
Issue Date: 2020
Source: Liu, W. & Cheung, S. H. (2020). Decoupled reliability-based geotechnical design of deep excavations of soil with spatial variability. Applied Mathematical Modelling, 85, 46-59. https://dx.doi.org/10.1016/j.apm.2020.04.001
Project: M4080123.030
M020030110
Journal: Applied Mathematical Modelling
Abstract: This paper presents a general decoupled method for reliability-based geotechnical design that takes into account the spatial variability of soil properties. In this method, reliability analyses that require a lot of computational resources are decoupled from the optimization procedure by approximating the failure probability function globally. Failure samples are iteratively generated over the entire design space so that their global distribution information can be extracted to construct the failure probability function. The method is computationally efficient, is flexible to implement, and is well suited for geotechnical problems that may involve sophisticated models. A design example of two-dimensional deep excavation against basal heave is discussed for Singapore marine clay where the density and normalized undrained shear strength of soil mass are modeled as random fields. Results demonstrate that the proposed method works well in practice and is advantageous over the coupled or locally decoupled reliability-based geotechnical design methods.
URI: https://hdl.handle.net/10356/154548
ISSN: 0307-904X
DOI: 10.1016/j.apm.2020.04.001
Rights: © 2020 Elsevier Inc. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles

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