A steel-concrete-steel sandwich beam represents a special form of sandwich structure. Originated in civil/structural engineering applications, it is now being developed for shipbuilding/offshore applications. The research trend is to introduce either a new shear connector system or a lightweight concrete. This paper presents an alternative construction of steel-concrete-steel sandwich beam in which the new concept design of aligning the shear connector in the inclined direction is proposed. The novel bi-directional corrugated-strip-core system is presented. The possibility of implement this core system using available sandwich construction techniques is presented. The advantages of the novel bi-directional corrugated-strip-core steel-concrete-steel sandwich beam are preliminarily studied in both the unfilled and concrete-filled state. The analytical study based on the force-distortion relationship technique of the repetitive unit cell shows that the transverse shear stiffness of the unfilled sandwich beam depends on the inclined direction of the proposed core. The numerical study of the concrete-filled sandwich beam type also shows the possibility to increase the transverse shear strength.
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