Composite Beam Criteria in LRFD

by William Charles Hansell, (M.ASCE), Consultant; Wiss Janney Elstner and Assocs., Northbrook, Ill.,
Ivan M. Viest, (F.ASCE), Asst. Mgr.; Sales Engrg., Bethlehem Steel Corp., Bethlehem, Pa.,
Mayasandra K. Ravindra, (M.ASCE), Supervisor; Probabilistic Analysis Section, Sargent and Lundy, Chicago, Ill.,
Theodore V. Galambos, (F.ASCE), Prof.; Civ. Engrg. Dept., Washington Univ., St. Louis, Mo.,

Serial Information: Journal of the Structural Division, 1978, Vol. 104, Issue 9, Pg. 1409-1426

Document Type: Journal Paper

Discussion: Wiesner Kenneth B. (See full record)
Closure: (See full record)

Abstract: Methods are proposed for the computation of flexural strength of composite beams and for design of shear connectors based on limit states of plastic strength. Both fully and partially composite beams with formed steel deck or flat soffit slabs are considered. LRFD resistance factors are derived using a first-order second-moment probability analysis. Linear plastic strength equations for partially composite beams and a direct design procedure for the steel section and shear connectors are presented. Also treated are effective slab width, beams under construction, and approximate formulas for effective moment of inertia and section modulus of partially composite beams.

Subject Headings: Composite beams | Shear strength | Flexural strength | Structural strength | Steel beams | Load and resistance factor design | Plastic design |

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