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Bulletin of Engineering Geology and the Environment
Published in: Bulletin of Engineering Geology and the Environment 4/2021

08-02-2021 | Original Paper

Comparison between baseline technique design and partial factor design in slope engineering

Authors: Lihong Chen, Ning Zhang, Xu Li, Lulu Zhang

Published in: Bulletin of Engineering Geology and the Environment | Issue 4/2021

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Abstract

In slope engineering, the allowable safety factor design (ASFD) is widely used. However, it includes all sources of uncertainties and does not truly account for risk. Therefore, a more robust design method is required. This study compares the actual reliability levels that ASFD, PFD (partial factor design), and BTD (baseline technique design) provide. The results indicate BTD provides the most stable reliability levels. The major findings are as follows. (1) A sampling strategy is provided to evaluate the performance that ASFD, PFD, and BTD achieve specific target reliability indexes. It provides reliability-based calibration and evaluation. (2) BTD provides more stable reliability levels, especially when the target reliability index is high. (3) The performance of PFD is influenced by the selection of quantile; BTD uses optimal quantiles and achieves the most stable reliability levels. This study provides a numerical investigation of design factors for shear strength parameters, and it uses a sampling strategy considering typical soils from sand to clay. Preliminary results show that BTD is attractive in numerical aspects.
previous article Study of the in situ stress field in a deep valley and its influence on rock slope stability in Southwest China
next article Numerical simulations of the failure process of anaclinal slope physical model and control mechanism of negative Poisson’s ratio cable

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Appendix
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Metadata
Title
Comparison between baseline technique design and partial factor design in slope engineering
Authors
Lihong Chen
Ning Zhang
Xu Li
Lulu Zhang
Publication date
08-02-2021
Publisher
Springer Berlin Heidelberg
Published in
Bulletin of Engineering Geology and the Environment / Issue 4/2021
Print ISSN: 1435-9529
Electronic ISSN: 1435-9537
DOI
https://doi.org/10.1007/s10064-020-02074-5

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