TY - JOUR
T1 - Failure Analysis of Dapped-End Cracking in Posttensioned Bridge Girder
AU - Jirawattanasomkul, Tidarut
AU - Kongwang, Nuttapong
AU - Likitlersuang, Suched
AU - Yodsudjai, Wanchai
AU - Charuvisit, Songpol
AU - Sato, Yasuhiko
N1 - Funding Information:
This research received funding support from the NSRF via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation (Grant number B16F630088). The authors acknowledge the Science and Technology Research Partnership for Sustainable Development (SATREPS) Project, Japan (Project title: Development of Integrated Infrastructure Maintenance Technology considering Natural Disaster Risk in Thailand). The first author (T. Jirawattanasomkul) acknowledges the financial support from the Faculty of Engineering, Kasetsart University, Thailand. The corresponding author (S. Likitlersuang) acknowledges the National Research Council of Thailand (NRCT): NRCT5-RSA63001-05 and the Ratchadapisek Sompoch Endowment Fund (2021), Chulalong-korn University (764002-ENV).
Publisher Copyright:
© 2021 American Society of Civil Engineers.
PY - 2021/11/1
Y1 - 2021/11/1
N2 - This paper will examine in detail a posttensioned concrete (PTC) girder bridge with dapped-end connections, with a re-entrant corner diagonal crack that is typical of these types of bridges. This paper aims to identify the possible causes of the existing damage and the potential modes of failure of the bridge's girder using nonlinear finite-element analysis (FEA). Failure analysis of the bridge girder will consider the effects of supplying the bridge with different dapped reinforcements and subjecting the bridge's prestressed tendons to losses in their prestressing forces. Various failure scenarios and cases will be simulated in numerical models. Numerical analysis results will be compared with design guidelines for bridge girders. Overall, the investigative results indicated that the combined impacts of insufficient hanger reinforcement and prestress losses in the girder's end-section was the probable cause of the bridge's re-entrant corner diagonal crack.
AB - This paper will examine in detail a posttensioned concrete (PTC) girder bridge with dapped-end connections, with a re-entrant corner diagonal crack that is typical of these types of bridges. This paper aims to identify the possible causes of the existing damage and the potential modes of failure of the bridge's girder using nonlinear finite-element analysis (FEA). Failure analysis of the bridge girder will consider the effects of supplying the bridge with different dapped reinforcements and subjecting the bridge's prestressed tendons to losses in their prestressing forces. Various failure scenarios and cases will be simulated in numerical models. Numerical analysis results will be compared with design guidelines for bridge girders. Overall, the investigative results indicated that the combined impacts of insufficient hanger reinforcement and prestress losses in the girder's end-section was the probable cause of the bridge's re-entrant corner diagonal crack.
KW - Bridge girders
KW - Cracks
KW - Dapped-end
KW - Finite-element analysis
KW - Prestressed concrete
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U2 - 10.1061/(ASCE)BE.1943-5592.0001786
DO - 10.1061/(ASCE)BE.1943-5592.0001786
M3 - Article
AN - SCOPUS:85114419200
SN - 1084-0702
VL - 26
JO - Journal of Bridge Engineering
JF - Journal of Bridge Engineering
IS - 11
M1 - 04021082
ER -