Paper Title:
Reliability Assessment of Corrosion Initiation of Harbor Concrete Structure Using FOSM
  Abstract

Due to the uncertainty of variables in durability model, the probabilistic approach is increasing. Monte Carlo Simulation (MCS) is an easily accessible method, but requires a lot of repeated operations. This paper evaluated the effectiveness of First Order Second Moment method (FOSM), which is more convenient and time saving method than MCS, to predict the corrosion initiation in harbor concrete structure. Mean Value First Order Second Moment method (MV FOSM) and Advanced First Order Second Moment method (AFOSM) are applied to the error function solution of Fick's second law modeling chloride diffusion. Reliability index and failure probability based on MV FOSM and AFOSM are compared with the results by MCS. The comparison showed that AFOSM and MCS predict similar reliability indexes and MV FOSM underestimates the probability of corrosion initiation by chloride attack. Also, the sensitivity of variables in durability model to failure probability was evaluated on the basis of AFOSM. The results showed that AFOSM is a simple and efficient method to estimate the possibility of corrosion initiation in harbor concrete structures.

  Info
Periodical
Key Engineering Materials (Volumes 385-387)
Edited by
H.S. Lee, I.S. Yoon and M.H. Aliabadi
Pages
621-624
DOI
10.4028/www.scientific.net/KEM.385-387.621
Citation
S. H. Han, W. S. Park, "Reliability Assessment of Corrosion Initiation of Harbor Concrete Structure Using FOSM", Key Engineering Materials, Vols. 385-387, pp. 621-624, 2008
Online since
July 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Ya Li Ma, Ai Lin Zhang
Abstract:Probability distribution law of corrosion initiation time of steel in concrete under chloride environment is discussed. Based on the Fick’s...
5632
Authors: Ya Li Ma, Ai Lin Zhang
Abstract:Probability analysis on the durable life of concrete structure under chloride environment is little known. Using the probability method based...
410
Authors: Wei Hua Shi, Zhi Wu Yu, Ya Chuan Kuang, Cheng Bin He
Chapter 4: Reliability and Durability of Structures
Abstract:Time dependency of chloride transport has been studied and an improving chloride penetration model has been established. Based on reliability...
1843
Authors: Bin Hong, Lu Feng Yang, Zheng Chen, Qing Ming Jiang, Chun Yan Hu, Ran Li
Chapter 3: Civil Engineering
Abstract:The stochastic model of chloride diffusion is the foundation of evaluating concrete structures’ reliability in marine environment. In this...
831
Authors: Wei Hua Shi, Zhi Wu Yu, Ya Chuan Kuang
Chapter 10: Reliability and Durability of Structures
Abstract:Time dependency of chloride transport has been studied and an improving model for predicting the apparent chloride diffusion coefficient has...
3282