[1] Zhu Jinsong, Gao Change,. Probabilistic durability assessment approachof deteriorating RC bridges [J]. Journal of Southeast University (English Edition), 2011, 27 (1): 70-76. [doi:10.3969/j.issn.1003-7985.2011.01.015]

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

27

Issue:

2011 1

Page:

70-76

Research Field:

Traffic and Transportation Engineering

Publishing date:

2011-03-30

Info

Title:

Probabilistic durability assessment approachof deteriorating RC bridges

Author(s):

Zhu Jinsong¹;  2;  Gao Change¹

¹School of Civil Engineering, Tianjin University, Tianjin 300072, China
² Key Laboratory of Coastal Civil Structure Safety of Ministry of Education, Tianjin University, Tianjin 300072, China

Keywords:

stochastic finite element method;  space-dependent reliability;  time-dependent reliability;  durability assessment;  concrete carbonation;  corrosion of rebars

PACS:

U448.34

DOI:

10.3969/j.issn.1003-7985.2011.01.015

Abstract:

A stochastic finite element computational methodology for probabilistic durability assessment of deteriorating reinforced concrete(RC)bridges by considering the time- and space-dependent variabilities is presented. First, finite element analysis with a smeared cracking approach is implemented. The time- dependent bond-slip relationship between steel and concrete, and the stress-strain relationship of corroded steel bars are considered. Secondly, a stochastic finite element-based computational framework for reliability assessment of deteriorating RC bridges is proposed. The spatial and temporal variability of several parameters affecting the reliability of RC bridges is considered. Based on the data reported by several researchers and from field investigations, the Monte Carlo simulation is used to account for the uncertainties in various parameters, including local and general corrosion in rebars, concrete cover depth, surface chloride concentration, chloride diffusion coefficient, and corrosion rate. Finally, the proposed probabilistic durability assessment approach and framework are applied to evaluate the time-dependent reliability of a girder of a RC bridge located on the Tianjin Binhai New Area in China.

References:

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Memo

Memo:

Biography: Zhu Jinsong(1975—), male, doctor, associate professor, jszhu@tju.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.50708065), the National High Technology Research and Development Program of China(863 Program)(No.2007AA11Z113), Specialized Research Fund for the Doctoral Program of Higher Education(No.20070056125).
Citation: Zhu Jinsong, Gao Change. Probabilistic durability assessment approach of deteriorating RC bridges[J].Journal of Southeast University(English Edition), 2011, 27(1):70-76.[doi:10.3969/j.issn.1003-7985.2011.01.015]

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