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Liquefaction Hazard Zonation based on a Probabilistic Model of Lateral Spread Exceeding a Pre-defined Threshold
LIU Fang 1 * #,LI Zhen 2,LI Peizhen 3,JIANG Mingjing 1
1.Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
2. State key laboratory of disaster reduction in civil engineering, Tongji University, Shanghai 200092, China
3. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China
*Correspondence author
#Submitted by
Subject:
Funding: Specialized Research Fund for the Doctoral Program of Higher Education (No.No. 20100072120006), National Nature Science Foundation of China (No.No. 41102173, 51025932)
Opened online: 3 March 2014
Accepted by: none
Citation: LIU Fang,LI Zhen,LI Peizhen.Liquefaction Hazard Zonation based on a Probabilistic Model of Lateral Spread Exceeding a Pre-defined Threshold[OL]. [ 3 March 2014] http://en.paper.edu.cn/en_releasepaper/content/4586410
 
 
Lateral spreads have been extensively found near waterfronts after major earthquakes as a consequence of liquefied saturated sandy soils, and they posed significant detrimental effects on widely-spreading urban lifelines. This paper proposes a displacement-based procedure for liquefaction hazard zonation by using a newly-developed probabilistic model of liquefaction-induced lateral displacements exceeding a pre-defined threshold. The probabilistic function was formulated from a regression analysis on case histories of liquefaction by employing probit modeling. The procedure for generating the liquefaction hazard map with this proposed model was demonstrated through a selected case study. The comparison between the predicted probability and the field measurements indicates that the model can provide reasonable prediction particularly in cases of large deformations. The displacement-based procedure is promising, providing probability map that highlights the regions where relatively large deformations have been observed.
Keywords:geotechnical engineering; liquefaction; lateral spread; probit model; hazard mapping
 
 
 

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