Inter-region variability of Robertson and Wride method for liquefaction hazard analysis

NCUIR > Engineering College > Department of Civil Engineering > journal & Dissertation > Item 987654321/100461

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/100461

Title:	Inter-region variability of Robertson and Wride method for liquefaction hazard analysis
Authors:	莊長賢;Zhang, J.;Juang, C.H.;Martin, J.R.;Huang, H.W.
Contributors:	工學院土木工程學系
Keywords:	Bayesian method;Bias;Calibration;Earthquake;engineering;equations;Geology;hazard characterization;Inter-region variability;Liquefaction;Mathematical analysis;Mathematical models;Reliability;Uncertainty
Date:	2016-03-25
Issue Date:	2026-04-21 14:03:23 (UTC+8)
Publisher:	Elsevier;Elsevier B.V
Abstract:	摘要： Semi-empirical models used for liquefaction potential evaluation are often developed based on lumping data from different regions around the world. The accuracy of a semi-empirical model developed in such a way may vary from one region to another, which has been seldom studied previously. Thus, in this paper, a probabilistic method is suggested to characterize the inter-region variability of the model bias factor of a semi-empirical model for liquefaction potential evaluation. As an illustration, the proposed approach is used to characterize the inter-region variability of the model bias factor of the Robertson and Wride model (called RW model for short herein). It is found that substantial inter-region variability exists in the model bias factor of the RW model. For a region not in the calibration database, the uncertainty associated with the model bias factor is significantly larger than that of a region in the calibration database. For regions in the calibration database, the uncertainty associated with the model bias factor in a region also changes with the amount and the type of the calibration data available in that region. It is thus important to collect region-specific performance data for model calibration to achieve accurate liquefaction potential evaluation. For ease of practical application, equations are provided for estimating the liquefaction probability based on the factor of safety (FOS) computed with the RW model for different regions. The suggested method can also be used to characterize the inter-region variability of other semi-empirical models and to derive region-specific relationships between FOS and liquefaction probability for these models. •Method for characterizing the inter-region variability is presented.•The inter-region variability of Robertson and Wride Method is characterized.•The accuracy of the Robertson and Wride model is region dependent.•Region-specific Fsc–PL relationships are derived for different regions.•Collecting more region-specific data helps reducing the inter-region variability. 出版者： Elsevier B.V 出版日期： 2016-03-25 出處： Engineering Geology, 2016-03, Vol.203, p.191-203 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2015 Elsevier B.V. 識別號： ISSN: 0013-7952 識別號： EISSN: 1872-6917 識別號： DOI: 10.1016/j.enggeo.2015.12.024
Appears in Collections:	[Department of Civil Engineering] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	14	View/Open

社群 sharing

Loading...