Zhang Yanxia, Zhang Ailin, Sun Wenlong. BEHAVIOR STUDY OF SELF-CENTERING BEAM-COLUMN CONNECTIONS IN RESILIENT STEEL FRAMES AFTER EARTHQUAKE[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(11): 160-167. doi: 10.13204/j.gyjz2001411032
Citation:
Zhang Yanxia, Zhang Ailin, Sun Wenlong. BEHAVIOR STUDY OF SELF-CENTERING BEAM-COLUMN CONNECTIONS IN RESILIENT STEEL FRAMES AFTER EARTHQUAKE[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(11): 160-167. doi: 10.13204/j.gyjz2001411032
Zhang Yanxia, Zhang Ailin, Sun Wenlong. BEHAVIOR STUDY OF SELF-CENTERING BEAM-COLUMN CONNECTIONS IN RESILIENT STEEL FRAMES AFTER EARTHQUAKE[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(11): 160-167. doi: 10.13204/j.gyjz2001411032
Citation:
Zhang Yanxia, Zhang Ailin, Sun Wenlong. BEHAVIOR STUDY OF SELF-CENTERING BEAM-COLUMN CONNECTIONS IN RESILIENT STEEL FRAMES AFTER EARTHQUAKE[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(11): 160-167. doi: 10.13204/j.gyjz2001411032
Three specimens were designed and the low-cycle loading experiments,as well as finite element and theory
analyses were performed for the self-centering beam-column connections using the bolted web friction devices( WFDs)
in earthquake resilient steel frames,The comprehensive results indicated that the opening at beam-column interface and
self-centering mechanism were realized in the procedure of loading and unloading of self-centering beam-column
connections with WFDs. The hysteresis loops of specimens were observed to have a double-flag shape obviously. And
their energy dissipation ratios( βE
) all satisfied the basic requirement that βE was greater than 0. 25 and the maximum
PT force was below the 0. 9 yield PT force. During the whole experiment procedure,main structural components of
specimens always kept elastic. The residual rotations was small and the goal of self-centering after earthquake was
achieved. Besides,the increment of the initial PT force leads to an increase in the initial stiffness,stiffness after
opening,opening critical moment and the maximum PT force in different degrees,but a gradual decrease in maximum
opening rotation the downtrend in energy dissipation. The finite element analysis agreed well with matched the experimental data. The results of the theoretical models also agreed with those of the experiment and finite element analysis.