Influence of bolts on seismic performance of earthquake-resilient prefabricated sinusoidal corrugated web steel beam-column joints. (September 2020)

• Record Type: Journal Article
• Authors: Jiang, Zi-qin; Li, Shi-huan; Liu, Xue-chun; Qiu, Ping; Niu, Zi-yao
• Is Part Of: Journal of constructional steel research. Volume 172(2020)
• Publication Date: 2020-09
• Subjects: Earthquake-resilient -- Prefabricated beam-column joint -- Sinusoidal corrugated web steel beam -- Dual energy dissipation -- Seismic performance -- Bolt parameters; Steel, Structural -- Periodicals; Building, Iron and steel -- Periodicals; Acier de construction -- Périodiques; Construction métallique -- Périodiques; 624.1821
• DOI: 10.1016/j.jcsr.2020.106214
• Languages: English
• ISSNs: 0143-974X

Abstract

Abstract: Earthquake-resilient structures have been widely recognized and applied in the seismic field of prefabricated steel structures due to their excellent performance. The prefabricated sinusoidal corrugated web steel beam-column joint (PSCWJ) with the earthquake-resilient design concept has been previously proposed. To study the impact caused by the bolt parameters on the seismic behavior of the new PSCWJ, five specimens were designed, with varying the number of flange connecting bolts, type of bolt holes, and interval between the middle bolts. A low cycle reciprocating load test and the finite element (FE) simulations were conducted on the specimens to determine the failure mode, energy dissipation capacity, ductility, hysteretic curves, sliding curves, strain curves, skeleton curves, and other main indexes on seismic performance. And the study indicates that the PSCWJ has excellent bearing capacity and seismic performance, the new prefabricated joint can realize the dual energy dissipation by buckling and sliding of the flange cover plate (FCP), and the number of flange connecting bolts directly determines the sliding load of FCPs. A rational interval between middle bolts can control the buckling load of FCPs and provide the joint with a satisfactory bearing capacity. The setting of slotted hole can increase the rotation and energy dissipation capacity of the joint. Further, the energy dissipation performance of the repaired specimens is stable under the low frequency constant amplitude loading, thereby ensuring that the PSCWJ can be used as a damper. Graphical abstract: Unlabelled Image Highlights: Five PSCWJ specimens are subjected to cyclic loading tests and repair tests. The effects of bolt design parameters on joint seismic performance are studied. The failure mode and energy dissipation capacity of PSCWJ are investigated. Finite element numerical simulations are carried out on the test specimen. The repair program of replacing the connection device is feasible.