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Experimental and analytical studies on impact behaviours of a steel–concrete–steel sandwich beam with novel interlocked angle connectors
Abstract The dynamic responses of steel–concrete–steel (SCS) sandwich beams with novel interlocked angle connectors (IACs) under low-velocity impact were studied and presented in this paper. The impact tests on the SCS sandwich beams were first implemented using a drop-weight impact test machine, and the failure modes, displacement, and impact responses were obtained from the tests. The varying parameters considered in the tests included the thicknesses of the concrete and steel faceplates, as well as the spacing and type of IACs. The test results indicated that nine specimens experienced flexural failure, and one specimen exhibited shear failure. Moreover, local buckling of the top steel faceplate occurred in four specimens with a relatively larger spacing of IACs. A two-degree-of-freedom (TDOF) analytical model considering the strain rate effect was proposed for the SCS sandwich beam to obtain their impact forces and mid-span displacements. The analytically-predicted responses of the SCS sandwich beam with IACs agreed well with the test data.
Highlights A novel interlocked angle connector (IAC) was developed for the steel–concrete–steel (SCS) sandwich beam. Drop-weight impact tests on the SCS sandwich beams with IACs were performed. Flexural and shear failure modes were observed for the SCS sandwich beams under impact load. An analytical model was developed for obtaining dynamic responses of the SCS sandwich beam under impact load.
Experimental and analytical studies on impact behaviours of a steel–concrete–steel sandwich beam with novel interlocked angle connectors
Abstract The dynamic responses of steel–concrete–steel (SCS) sandwich beams with novel interlocked angle connectors (IACs) under low-velocity impact were studied and presented in this paper. The impact tests on the SCS sandwich beams were first implemented using a drop-weight impact test machine, and the failure modes, displacement, and impact responses were obtained from the tests. The varying parameters considered in the tests included the thicknesses of the concrete and steel faceplates, as well as the spacing and type of IACs. The test results indicated that nine specimens experienced flexural failure, and one specimen exhibited shear failure. Moreover, local buckling of the top steel faceplate occurred in four specimens with a relatively larger spacing of IACs. A two-degree-of-freedom (TDOF) analytical model considering the strain rate effect was proposed for the SCS sandwich beam to obtain their impact forces and mid-span displacements. The analytically-predicted responses of the SCS sandwich beam with IACs agreed well with the test data.
Highlights A novel interlocked angle connector (IAC) was developed for the steel–concrete–steel (SCS) sandwich beam. Drop-weight impact tests on the SCS sandwich beams with IACs were performed. Flexural and shear failure modes were observed for the SCS sandwich beams under impact load. An analytical model was developed for obtaining dynamic responses of the SCS sandwich beam under impact load.
Experimental and analytical studies on impact behaviours of a steel–concrete–steel sandwich beam with novel interlocked angle connectors
Wang, Yonghui (Autor:in) / Ma, Xipeng (Autor:in) / Chen, Junyi (Autor:in) / Zhai, Ximei (Autor:in) / Zhi, Xudong (Autor:in) / Zhou, Hongyuan (Autor:in) / Zhong, Jie (Autor:in)
Thin-Walled Structures ; 181
25.08.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch