Updating method for durability models of concrete structures in carbonation environment

被引：0

作者：

Gu H. ^{[1
]}

Li Q.-W. ^{[1
]}

Hou G.-J. ^{[1
]}

机构：

[1] Department of Civil Engineering, Tsinghua University, Beijing

来源：

Gongcheng Lixue/Engineering Mechanics | 2021年 / 38卷 / 05期

关键词：

Carbonation environment; Durability assessment; Inspection information; Life prediction; Model updating;

D O I：

10.6052/j.issn.1000-4750.2020.06.0361

中图分类号：

学科分类号：

摘要：

The durability models for concrete structures in a carbonation environment have been proposed based on diffusion theory, on accelerated tests and on engineering experience. Due to the inherent- uncertainty of structures and to the complexity of actual service environment, the calculation results of these models often have a big deviation from the actual test results. In the light of the point, a durability model updating method in a carbonation environment is proposed based on Bayesian theory by utilizing the durability inspection data with carbonation depth, with corrosion ratio of steel reinforcement and with cracking ratio of concrete. With the actual test results, the updated durability prediction model which consistent with the actual durability condition of the structure, is more consistent with the actual durability state of the evaluation structure. According to the model, the probability prediction of the residual durability life and durability rating are carried out, so as to provide a reference for the durability evaluation of existing structures. Copyright ©2021 Engineering Mechanics. All rights reserved.

引用

页码：113 / 121

页数：8

共 27 条

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