TY - JOUR
T1 - Flexural behaviors of full-scale prestressed high-performance concrete box girders
AU - Gou, Hongye
AU - Gu, Jie
AU - Ran, Zhiwen
AU - Bao, Yi
AU - Pu, Qianhui
N1 - Publisher Copyright:
Copyright © 2020 Techno-Press, Ltd.
PY - 2020/9/10
Y1 - 2020/9/10
N2 - In this study, the flexural behaviors of full-scale prestressed concrete box girders are experimentally investigated. Four girders were fabricated using two types of concrete (compressive strengths: 50 MPa and 70 MPa) and tested under four-point bending until failure. The measured parameters included the deflection, the stress and strain in concrete and steel bars, and cracks in concrete. The measurement results were used to analyze the failure mode, load-bearing capacity, and deformability of each girder. A finite element model is established to simulate the flexural behaviors of the girders. The results show that the use of high-performance concrete and reasonable combination of prestressed tendons could improve the mechanical performance of the box girders, in terms of the crack resistance, load-carrying capacity, stress distribution, and ductility.
AB - In this study, the flexural behaviors of full-scale prestressed concrete box girders are experimentally investigated. Four girders were fabricated using two types of concrete (compressive strengths: 50 MPa and 70 MPa) and tested under four-point bending until failure. The measured parameters included the deflection, the stress and strain in concrete and steel bars, and cracks in concrete. The measurement results were used to analyze the failure mode, load-bearing capacity, and deformability of each girder. A finite element model is established to simulate the flexural behaviors of the girders. The results show that the use of high-performance concrete and reasonable combination of prestressed tendons could improve the mechanical performance of the box girders, in terms of the crack resistance, load-carrying capacity, stress distribution, and ductility.
KW - Box girder
KW - Finite element analysis
KW - Flexural behavior
KW - Full-scale failure test
KW - High performance concrete
UR - http://www.scopus.com/inward/record.url?scp=85095862878&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85095862878&partnerID=8YFLogxK
U2 - 10.12989/sem.2020.75.5.595
DO - 10.12989/sem.2020.75.5.595
M3 - Article
AN - SCOPUS:85095862878
SN - 1225-4568
VL - 75
SP - 595
EP - 605
JO - Structural Engineering and Mechanics
JF - Structural Engineering and Mechanics
IS - 5
ER -