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Title: Fatigue analysis and design of steel-concrete-steel sandwich composite structures
Keywords: Fatigue, Steel-Concrete-Steel, Connector, Sandwich, Lightweight aggregate concrete, Textured interface
Issue Date: 17-Jun-2009
Citation: DAI XUEXIN (2009-06-17). Fatigue analysis and design of steel-concrete-steel sandwich composite structures. ScholarBank@NUS Repository.
Abstract: Lightweight Steel-Concrete-Steel (SCS) sandwich composite system is proposed for marine and offshore applications. A type of fiber-reinforced lightweight aggregate concrete (LWAC) with expanded glass granules is developed for the proposed lightweight sandwich composite system. Fatigue test results demonstrate that both maximum applied load and load range affect on structural behavior of SCS sandwich member. A three-parameter fatigue design equation is proposed. The proposed equation shows that maximum applied stress yields significant effect on fatigue performance when the difference between the maximum applied stress and the stress range is considerable. A type of textured interface, Expamet, is proposed to be used for strength improvement of SCS sandwich composites. Based on test results, bond, static and fatigue strength are all improved compared to that without Expamet. Expamet meshes can serve as a type of 'linear or surface connector' which is complementary with 'point connector' such as shear stud.
Appears in Collections:Ph.D Theses (Open)

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