Risk assessment for hydraulic design associated with the uncertainty of rainfall

C. M. Wang, Chjeng-Lun Shieh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationPrediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009
Pages507-512
Number of pages6
Publication statusPublished - 2009 Dec 1
EventInternational Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009 - Kyoto, Japan
Duration: 2009 May 252009 May 27

Publication series

NamePrediction 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
CountryJapan
CityKyoto
Period09-05-2509-05-27

Fingerprint

Cost-benefit Analysis
Cost benefit analysis
Rainfall
Risk Assessment
Hydraulics
Risk assessment
Rain
Reliability Index
Constrained optimization
Constrained Optimization Problem
Uncertainty
Hydraulic System
Constraint Handling
Safety factor
Penalty Function
Safety
Genetic algorithms
Genetic Algorithm
Alternatives
Evaluation

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation

Cite this

Wang, C. M., & Shieh, C-L. (2009). Risk assessment for hydraulic design associated with the uncertainty of rainfall. In Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009 (pp. 507-512). (Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009).
Wang, C. M. ; Shieh, Chjeng-Lun. / Risk assessment for hydraulic design associated with the uncertainty of rainfall. Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009. 2009. pp. 507-512 (Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009).
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Wang, CM & Shieh, C-L 2009, Risk assessment for hydraulic design associated with the uncertainty of rainfall. in Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009. Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009, pp. 507-512, International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009, Kyoto, Japan, 09-05-25.

Risk assessment for hydraulic design associated with the uncertainty of rainfall. / Wang, C. M.; Shieh, Chjeng-Lun.

Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009. 2009. p. 507-512 (Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Wang CM, Shieh C-L. Risk assessment for hydraulic design associated with the uncertainty of rainfall. In Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009. 2009. p. 507-512. (Prediction and Simulation Methods for Geohazard Mitigation - Proceedings of the International Symposium on Prediction and Simulation Methods for Geohazard Mitigation, IS-KYOTO 2009).