Risk assessment for hydraulic design associated with the uncertainty of rainfall

C. M. Wang, C. L. Shieh

研究成果: Conference contribution

摘要

The purpose of this paper is to propose a method that incorporates the uncertainties of the depth and the duration of rainfall into the risk assessment for hydraulic design. In this paper, the risk of a hydraulic system is defined as the probability of failure of the hydrological system. The Hasofer-Lind reliability index (HLRI), which is a popular index for risk assessment, is used to improve the computation efficiency. The evaluation of the HLRI can be transformed into a constrained optimization problem. To solve the constrained optimization problem, modified simple genetic algorithms (SGA), which combine the penalty function and the constraint handling technique proposed by Deb (2000), is developed. The proposed method can produce the relation of the probability of failure versus the central safety factor. Based on the relation, a comprehensive benefit-cost analysis can be performed. The optimal alternative can be selected according to the result of the benefit-cost analysis. The proposed method provides an aid for performing the benefit-cost analysis.

原文English
主出版物標題Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009
頁面507-512
頁數6
出版狀態Published - 2009 十二月 1
事件International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009 - Kyoto, Japan
持續時間: 2009 五月 252009 五月 27

出版系列

名字Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009

Other

OtherInternational Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009
國家Japan
城市Kyoto
期間09-05-2509-05-27

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation

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