A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental study of earthquake-resilient prefabricated beam-column steel joint with L-shaped plate
Abstract The research of prefabricated steel structure have become a hot topic in international structural engineering, which accelerates its promotion and application. Based on the idea of damage control, an earthquake-resilient prefabricated beam-column steel joint (PBCSJ) has been proposed, which can make the plastic damage occur at the flange cover plate (FCP) by reasonable design of the FCP thickness, middle bolts interval and other parameters. It is ensured that no plastic damage occurs at the main components such as beams and columns. Thus, joint can be repaired by replacing the connection devices to restore its use function. In this article, four specimens are designed, and the quasi-static loading tests and the numerical simulations are conducted to the four specimens and two repaired specimens. The impact on the seismic performance caused by the FCP thickness, FCP connecting bolts number, beam gap and other parameters, as well as the post-earthquake resilience are emphatically investigated. The failure mode, hysteretic curves, skeleton curves and other main performance indexes are obtained. The study shows that: PBCSJ can dissipate energy through the FPC plastic deformation; the thickness of FCP has a relatively big influence on the joint bearing capacity and energy dissipating performance; the decreasing number of FCP connecting bolts would cause the FCP sliding; the insufficient gap of beams would cause the local plastic damage due to the extrusion of the beams. In addition, the joint before and after the repairing would have excellent bearing capacity and energy dissipating performance. The results of the refined finite element (FE) analysis basically match the test results, and can be used as an important tool for the performance study of such type of joints.
Highlights Earthquake-resilient PBCSJ with different design parameters are proposed. Four basic and two repaired specimens for the quasi static loading tests. Main seismic performance indexes and failure mode of PBCSJ are obtained. The influence of design parameters on seismic performance are investigated. The joint before and after the repairing have basically the same seismic performance.
Experimental study of earthquake-resilient prefabricated beam-column steel joint with L-shaped plate
Abstract The research of prefabricated steel structure have become a hot topic in international structural engineering, which accelerates its promotion and application. Based on the idea of damage control, an earthquake-resilient prefabricated beam-column steel joint (PBCSJ) has been proposed, which can make the plastic damage occur at the flange cover plate (FCP) by reasonable design of the FCP thickness, middle bolts interval and other parameters. It is ensured that no plastic damage occurs at the main components such as beams and columns. Thus, joint can be repaired by replacing the connection devices to restore its use function. In this article, four specimens are designed, and the quasi-static loading tests and the numerical simulations are conducted to the four specimens and two repaired specimens. The impact on the seismic performance caused by the FCP thickness, FCP connecting bolts number, beam gap and other parameters, as well as the post-earthquake resilience are emphatically investigated. The failure mode, hysteretic curves, skeleton curves and other main performance indexes are obtained. The study shows that: PBCSJ can dissipate energy through the FPC plastic deformation; the thickness of FCP has a relatively big influence on the joint bearing capacity and energy dissipating performance; the decreasing number of FCP connecting bolts would cause the FCP sliding; the insufficient gap of beams would cause the local plastic damage due to the extrusion of the beams. In addition, the joint before and after the repairing would have excellent bearing capacity and energy dissipating performance. The results of the refined finite element (FE) analysis basically match the test results, and can be used as an important tool for the performance study of such type of joints.
Highlights Earthquake-resilient PBCSJ with different design parameters are proposed. Four basic and two repaired specimens for the quasi static loading tests. Main seismic performance indexes and failure mode of PBCSJ are obtained. The influence of design parameters on seismic performance are investigated. The joint before and after the repairing have basically the same seismic performance.
Experimental study of earthquake-resilient prefabricated beam-column steel joint with L-shaped plate
Jiang, Zi-Qin (author) / Dou, Chao (author) / Zhang, Hang (author) / Wang, Qi (author) / Yang, Yi-huan (author)
2020-01-03
Article (Journal)
Electronic Resource
English