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The Innovative Concept of Semi-rigid Composite Beam

by Abolhassan Astaneh-Asl, Univ of California, Berkeley, United States,



Document Type: Proceeding Paper

Part of: Structural Engineering in Natural Hazards Mitigation

Abstract:

This paper discusses invention and development of a new type of composite beam called 'Semi-rigid Composite Beam.' This new type of beam is expected to behave better than presently used fully composite and partially composite beams. The innovative concept that forms the basis of the proposed semi-rigid composite beam is to provide a small hollow conical chamber within the concrete around the base of the shear studs. The part of a shear stud within this hollow chamber is not embedded in the concrete, therefore, can develop shear yielding in a controlled and ductile manner. Such a shear fuse, developed in the studs can potentially be used to control and reduce seismic forces developed in composite floors, beams as well as in the structure itself.

Subject Headings: Composite beams | Composite structures | Shear flow | Studs | Shear resistance | Shear forces | Seismic tests

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