TY - GEN
T1 - Mechanical behavior of composite girder with perfobond shear connector under hogging moment
AU - He, Jun
AU - Liu, Yuqing
AU - Zhao, Chen
AU - Chen, Airong
AU - Yoda, Teruhiko
PY - 2012
Y1 - 2012
N2 - The mechanical behavior of the support regions for continuous composite girders with tensile stresses in the concrete slab and compressive stresses in the lower steel profile becomes strongly nonlinear under negative bending moments. A static test on four half-scale model of a steel and concrete composite girders with different shear connectors including studs and PBL under hogging moments was conducted and observed to evaluate the influence of shear connector on inelastic behavior such as flexural stiffness reduction, crack initiation and development in concrete slab. From the test results, the flexural stiffness and loading capacity of the composite girders were improved by PBL shear connector. Higher initial cracking load and crack resistance stiffness of composite girders with PBL shear connector under serviceability limit state was obtained during crack development process. The test specimen could be assumed as full composite section until the ultimate state from load-slip relationship of shear connector. Analytical and experimental studies can serve as a basis for continuous composite bridges design.
AB - The mechanical behavior of the support regions for continuous composite girders with tensile stresses in the concrete slab and compressive stresses in the lower steel profile becomes strongly nonlinear under negative bending moments. A static test on four half-scale model of a steel and concrete composite girders with different shear connectors including studs and PBL under hogging moments was conducted and observed to evaluate the influence of shear connector on inelastic behavior such as flexural stiffness reduction, crack initiation and development in concrete slab. From the test results, the flexural stiffness and loading capacity of the composite girders were improved by PBL shear connector. Higher initial cracking load and crack resistance stiffness of composite girders with PBL shear connector under serviceability limit state was obtained during crack development process. The test specimen could be assumed as full composite section until the ultimate state from load-slip relationship of shear connector. Analytical and experimental studies can serve as a basis for continuous composite bridges design.
KW - Composite girder
KW - Hogging moment
KW - Mechanical behavior
KW - Perfobond shear connector
UR - http://www.scopus.com/inward/record.url?scp=84863125608&partnerID=8YFLogxK
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U2 - 10.4028/www.scientific.net/AMR.446-449.1046
DO - 10.4028/www.scientific.net/AMR.446-449.1046
M3 - Conference contribution
AN - SCOPUS:84863125608
SN - 9783037853474
VL - 446-449
T3 - Advanced Materials Research
SP - 1046
EP - 1053
BT - Advanced Materials Research
T2 - 2nd International Conference on Structures and Building Materials, ICSBM 2012
Y2 - 9 March 2012 through 11 March 2012
ER -