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摘要:
Based on the ideas of damage control and slip based energy dissipation, two types of earthquake-resilient prefabricated cross joints were proposed in this paper.Low frequency cyclic loading tests and fatigue tests of three specimens and one repaired specimen were carried out to investigate the influence of the forms of web connector on the hysteretic behavior of these joints. Through this series of tests, several seismic behavior indicators such as the hysteresis curve, stiffness degradation curve and strain distribution on main components were obtained. The test results show that the proposed two types of prefabricated cross joints have excellent bearing capacity, energy dissipation capacity, ductility and plastic rotation capacity. The scheme of replacing the energy-consuming components such as the flange cover plates is applicable, since the energy dissipation capacity of the joints before and after the repair is stable, which can be used as a displacement-related damper. The forms of the web connectors have little influence on the bearing capacity and initial stiffness of the joint, but have a great influence on the joint rotation capacity and the stress of main beams. © 2020, Editorial Office of Journal of Building Structures. All right reserved.
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来源 :
Journal of Building Structures
ISSN: 1000-6869
年份: 2020
期: 1
卷: 41
页码: 15-23