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学者姓名：姜子钦
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Abstract ：
Prefabricated steel structure has been promoted in construction for its advantages in the greening, industrialization and informatization of buildings. Meanwhile, the earthquake-resilience of steel structures has become a research hotspot in the field of international seismic engineering. In this paper, five earthquake-resilient prefabricated steel beam-column cross joints (ERPCJs) were studied by the low-cyclic loading tests. The influence of flange connecting bolts number, flange connection forms, bolt distance of middle row and bolt hole forms on the seismic performance, failure mode and other key performance indexes were studied. The tests results show that ERPCJs with reasonable parameters have outstanding bearing capability and seismic behavior. The beams of each specimen were damaged slightly or basically free from damage. Also, earthquake-resilient requirement could be quickly achieved by replacing connecting plates and high-strength bolt groups. Reducing the connecting bolts could make the joint fully utilize the sliding friction of flange cover plates (FCPs) to dissipate energy, and enhance ductility and rotation of the joint, but it could reduce joint's initial stiffness and ultimate bearing capability at the same time. The smaller bolt distance of middle row has little effect on the yielding load of the joint, but can improve joint's ultimate bearing capability. Besides, slotted holes on the cantilever beam can avoid the stressconcentration resulting from the compression of bolt rods and bolt hole walls, as well as can also effectively realize sliding energy dissipation of the FCPs.
Keyword ：
Earthquake-resilient Earthquake-resilient Flange cover plate Flange cover plate Dog-bone weakened Dog-bone weakened Cross joint Cross joint Different connection parameters Different connection parameters Seismic performance Seismic performance
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| GB/T 7714 | Zhang, Ai-lin , Su, Lei , Jiang, Zi-qin et al. Cyclic loading tests of earthquake-resilient prefabricated steel cross joints with different FCP connections [J]. | STRUCTURES , 2021 , 32 : 1-14 . |
| MLA | Zhang, Ai-lin et al. "Cyclic loading tests of earthquake-resilient prefabricated steel cross joints with different FCP connections" . | STRUCTURES 32 (2021) : 1-14 . |
| APA | Zhang, Ai-lin , Su, Lei , Jiang, Zi-qin , Kang, Yi-tao , Qiu, Ping . Cyclic loading tests of earthquake-resilient prefabricated steel cross joints with different FCP connections . | STRUCTURES , 2021 , 32 , 1-14 . |
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Abstract ：
As an important component, the mechanical properties of the prefabricated beam-column steel joints have an effect on the mechanical mechanism of the whole frame structure system. According to the concept of replaceable post-earthquake and plastic damage control, the earthquake-resilient prefabricated beam-column steel joint with double flange cover plates (ERPBJ with double FCPs) has been proposed. To investigate the overall performance of the new steel frame with the new joint, four frame specimens are designed, and low-cycle reciprocating loading test and low cycle fatigue test had been carried out on them. The influence of the number of bolts, width of weakened dog-bone, post-earthquake repairability and different loading protocols have been studied. The failure mode, hysteretic curve, skeleton curve, the displacement ductility coefficient, the equivalent viscous damping coefficient have been obtained. The study results shows that the new earthquake-resilient prefabricated steel frame (ERPSF) with double FCPs have the advantage of controlling the damage positions. The plastic damage occurs on the replaceable FCPs, which ensures the structural performance, and the main structural components don not undergo plastic deformation. The decrease of the number of bolts will make the slip of FCPs more obvious, which will lead to the failure to fully utilize the bearing capacity of the FCP and reduce the ultimate load of the frame, but will improve the ductility and energy dissipation capacity of the frame. The behavior of ERPSF with double FCPs is stable under low cycle fatigue loading test and many repair tests, which indicates that the ERPBJ with double FCPs can be used as a damper in the frame structure system.
Keyword ：
Double FCPs Double FCPs Prefabricated steel frame Prefabricated steel frame Low-cycle reciprocating loading test Low-cycle reciprocating loading test Seismic performance Seismic performance Earthquake-resilient Earthquake-resilient
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Copy from the list or Export to your reference management。
| GB/T 7714 | Zhang, Ai-Lin , Qiu, Ping , Jiang, Zi-Qin et al. Low-cycle reciprocating loading test of Earthquake-resilient prefabricated steel frame with double FCPs [J]. | STRUCTURES , 2021 , 34 : 3982-3995 . |
| MLA | Zhang, Ai-Lin et al. "Low-cycle reciprocating loading test of Earthquake-resilient prefabricated steel frame with double FCPs" . | STRUCTURES 34 (2021) : 3982-3995 . |
| APA | Zhang, Ai-Lin , Qiu, Ping , Jiang, Zi-Qin , Li, Ran , Zhang, Xue-Feng . Low-cycle reciprocating loading test of Earthquake-resilient prefabricated steel frame with double FCPs . | STRUCTURES , 2021 , 34 , 3982-3995 . |
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