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Title |
Probabilistic Risk Assessment of Coastal Structures using LHS-based Reliability Analysis Method
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Authors |
허정원(Jung-Won Huh) ; 정홍우(Hong-Woo Jung) ; 안진희(Jin-Hee Ahn) ; 안성욱(Sung-Wook An) |
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DOI |
http://dx.doi.org/10.11112/jksmi.2015.19.6.072 |
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Keywords |
해안구조물 ; 신뢰성해석 ; 라틴 하이퍼큐브 샘플링 ; 불확실성 ; 확률변수 Coastal structures ; Reliability analysis ; Latin Hypercube sampling ; Uncertainty ; Random variables |
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Abstract |
An efficient and practical reliability evaluation method is proposed for the coastal structures in this paper. It is capable of evaluating reliability of real complicated coastal structures considering uncertainties in various sources of design parameters, such as wave and current loads, resistance-related design variables including Young's modulus and compressive strength of the reinforced concrete, soil parameters, and boundary conditions. It is developed by intelligently integrating the Latin Hypercube sampling (LHS), Monte Carlo simulation (MCS) and the finite element method (FEM). The LHS-based MCS is used to significantly reduce the computational effort by limiting the number of simulation cycles required for the reliability evaluation. The applicability and efficiency of the proposed method were verified using a caisson-type breakwater structure in the numerical example.
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