Probabilistic safety evaluation of a concrete arch dam based on finite element modeling and a reliability L-R approach

• Autorzy: Pouraminian Majid , Pourbakhshian Somayyeh , Noroozinejad Farsangi Ehsan , Fotoukian Reza

Identyfikatory

DOI

10.2478/ceer-2019-0044

• Języki publikacji: EN

Abstrakty

EN

The safety assessment of the Pacoima arch dam is investigated in this paper. A Load – Resistance (L-R) method was used to ensure that the dam is safe or if it is at risk of failure. The "probabilistic design system" ANSYS finite element software was used to calculate the probability of failure. The Monte Carlo (MC) method with 50,000 iterations utilized for simulation and the Latin Hypercube method were used for Sampling. Input random variables with normal distribution and coefficient of variation of 15% due to uncertainties were considered and the six random variables used are the concrete modulus of elasticity, Poisson's ratio of concrete, concrete mass, up-stream normal water level of the reservoir, and the allowable tensile and compressive strength of the concrete. Linear elastic behavior was assumed for the constitutive law of concrete material and if the stress exceeds the allowable stress of the concrete this is considered as a failure limit state. The maximum and minimum principal stresses were considered as the output parameter. Dam body safety was investigated only under self-weight and upstream hydrostatic pressure at the normal water level [...]

Słowa kluczowe

EN

Pacoima arch dam; safety evaluation; Monte Carlo simulation; hydrostatic pressure; random variables; worst case

PL

zapora łukowa Pacoima; ocena bezpieczeństwa; symulacja Monte Carlo; ciśnienie hydrostatyczne; zmienne losowe

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: Civil and Environmental Engineering Reports
• Rocznik: 2019
• Tom: Vol. 29, no. 4
• Strony: 62--78
• Opis fizyczny: Bibliogr. 27 poz., fot., rys., tab., wykr.

Twórcy

autor

Pouraminian Majid

• Department of Civil Engineering, Ramsar Branch, Islamic Azad University, Ramsar, Iran

autor

Pourbakhshian Somayyeh

• Department of Civil Engineering, Ramsar Branch, Islamic Azad University, Ramsar, Iran

autor

Noroozinejad Farsangi Ehsan

• Faculty of Civil and Surveying Engineering, Graduate University of Advanced Technology, Kerman, Iran

autor

Fotoukian Reza

• Department of Civil Engineering, Ramsar Branch, Islamic Azad University, Ramsar, Iran

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