Predicting liquefaction probability based on shear wave velocity: an update
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- 作者：Mengfen Shen ; Qiushi Chen ; Jie Zhang…
- 刊名：Bulletin of Engineering Geology and the Environment
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：75
- 期：3
- 页码：1199-1214
- 全文大小：2,932 KB
- 刊物类别：Earth and Environmental Science
- 刊物主题：Earth sciences
Applied Geosciences
Structural Foundations and Hydraulic Engineering
Geoecology and Natural Processes
Nature Conservation - 出版者：Springer Berlin / Heidelberg
- ISSN：1435-9537
- 卷排序：75
文摘
The simplified methods based on the cone penetration test (CPT), standard penetration test (SPT), and shear wave velocity (Vs) test are prevalent in liquefaction potential evaluation. In this study, new case histories with the shear wave velocity measurements and the liquefaction phenomenon observations are compiled from the 22 February 2011 Canterbury earthquakes in New Zealand. The new case histories are combined with the existing Vs database for assessing and updating probabilistic models. The widely used logistic regression models, as well as other probabilistic models, are examined in the framework of generalized linear models (GLMs). To this end, the maximum likelihood estimation (MLE) principle is used to determine the model parameters. Then, the developed generalized linear models are ranked using three model assessment criteria. Based on the assessment criteria adopted, the log–log and logistic models are recommended for both the existing and the combined database. The updated log–log model and logistic model are recommended for shear wave velocity based liquefaction potential evaluation.KeywordsLiquefaction potential evaluationShear wave velocityGeneralized linear modelsProbabilistic models