TY - JOUR
T1 - Fatigue tests on straight steel-concrete composite beams subjected to hogging moment
AU - Lin, Weiwei
AU - Yoda, Teruhiko
AU - Taniguchi, Nozomu
PY - 2013/1
Y1 - 2013/1
N2 - This paper describes the fatigue behavior of composite steel and concrete beams subjected to negative bending moment. Fatigue tests with repeated load limited to initial cracking and stabilized cracking, were performed on two steel-concrete composite beam substructures respectively. Test results indicated that when the repeated load was equivalent to the initial cracking load, the fatigue test had only limited influence on beam stiffness or crack patterns. However, when the repeated load was equivalent to the stabilized cracking load, a number of residual cracks occurred in the initial static test and the beam became less stiff as the load cycles increase. Failure of the bond between studs and surrounding concrete was confirmed in intermediate static tests; flexural stiffness of studs became smaller as the increase of load cycles. In addition, final static tests were performed on fatigue test specimens and another specimen without fatigue test. The comparison indicated that when the repeated load was larger than the initial cracking load, fatigue test could decrease beam stiffness and its ultimate load carrying capacity.
AB - This paper describes the fatigue behavior of composite steel and concrete beams subjected to negative bending moment. Fatigue tests with repeated load limited to initial cracking and stabilized cracking, were performed on two steel-concrete composite beam substructures respectively. Test results indicated that when the repeated load was equivalent to the initial cracking load, the fatigue test had only limited influence on beam stiffness or crack patterns. However, when the repeated load was equivalent to the stabilized cracking load, a number of residual cracks occurred in the initial static test and the beam became less stiff as the load cycles increase. Failure of the bond between studs and surrounding concrete was confirmed in intermediate static tests; flexural stiffness of studs became smaller as the increase of load cycles. In addition, final static tests were performed on fatigue test specimens and another specimen without fatigue test. The comparison indicated that when the repeated load was larger than the initial cracking load, fatigue test could decrease beam stiffness and its ultimate load carrying capacity.
KW - Fatigue test
KW - Hogging moment
KW - Initial cracking
KW - Stabilized cracking
KW - Steel-concrete composite beam
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U2 - 10.1016/j.jcsr.2012.09.009
DO - 10.1016/j.jcsr.2012.09.009
M3 - Article
AN - SCOPUS:84867837922
VL - 80
SP - 42
EP - 56
JO - Journal of Constructional Steel Research
JF - Journal of Constructional Steel Research
SN - 0143-974X
ER -