Probabilistic Durability Analysis of Concrete Structure in Marine Environment

ZHENG Shaoqiang; CHEN Yeqiang; LIU Ronggui; WANG Jinyuan

doi:10.13204/j.gyjzG20090803

Volume 53 Issue 5

May 2023

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2023 > 53(5): 165-173

Li Yurong, Cai Kangfeng, Tang Yue. STUDY AND NEW DESIGN METHOD FOR CHEVRON-BRACED STEEL FRAMES[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(11): 116-121,130. doi: 10.13204/j.gyjz201011028

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ZHENG Shaoqiang, CHEN Yeqiang, LIU Ronggui, WANG Jinyuan. Probabilistic Durability Analysis of Concrete Structure in Marine Environment[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 165-173. doi: 10.13204/j.gyjzG20090803

Li Yurong, Cai Kangfeng, Tang Yue. STUDY AND NEW DESIGN METHOD FOR CHEVRON-BRACED STEEL FRAMES[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(11): 116-121,130. doi: 10.13204/j.gyjz201011028

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Probabilistic Durability Analysis of Concrete Structure in Marine Environment

doi: 10.13204/j.gyjzG20090803

Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China

Received Date: 2020-09-08

Abstract

Abstract

Probabilistic analysis on the durability of the concrete structure in the marine environment of Lianyungang Wharf was carried out. A time-varying probability analysis method for predicting the service life of concrete structures was adopted. A durability evaluation model of concrete structures considering the statistical characteristics of parameters was established. Combined with the long-term field inspection data of Lianyungang Wharf and domestic and foreign references, the statistical characteristics of the model parameters were analyzed in detail. Monte Carlo simulation method was used to calculate the failure probability and reliability index of concrete structure under different exposure time. A probability analysis method was proposed that comprehensively considers Standard for Design of Concrete Structure Durability (GB/T 50476-2019), optimal reliability, and the difference in reliability indicators. The influence of concrete protective layer thickness and chloride ion diffusion coefficient on the service life of concrete structures was studied. The research results show that the concrete protective layer thickness and the chloride diffusion coefficient have an important influence on the service life of the concrete structure. In contrast, the service life of the concrete structure is more sensitive to changes of the concrete protective layer thickness.
- concrete,
- durability,
- chloride ingress,
- marine environment,
- reliable index

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References

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