Design of Partially or Fully Composite Beams, with Ribbed Metal Deck, Using LRFD Specifications
A Hindu saying states, "One picture is worth a thousand words (numbers)." With this optic in mind, the design aspects of steel-concrete composite beams using the recently adopted LRFD specifications 1 are analyzed critically and the significance of several parameters is brought out clearly. Charts are then constructed to facilitate the design of partially or fully composite beams using rolled-steel, wideflange sections of A36 steel or A572 Gr. 50 steel. The slab may be a composite metal deck slab with ribs perpendicular to the beam, a haunched slab or, simply, a flat soffit concrete slab. The charts cover both adequate and inadequate slabs. The charts provided are a valuable tool from the practical standpoint, and also familiarity with them should contribute to the student's and young engineer's overall feel of the composite beam design problem. The design charts given here complement the composite beam design tables provided in the LRFD manual.
Performance Based Seismic Design of BracedComposite Multi Storied Building
Steel-concrete composite construction system is an efficient, economical and innovative method for seismic resistance of multi storied buildings. This paper represents a study on economic aspects of G+4 multi storied building designed by using braced frame composite construction. Since ductility, stiffness, inter storied drift and lateral displacements are the critical issues in seismic design of buildings, different types of braced frame models are developed in this study and evaluated its structural performance. Equivalent static method of seismic analysis used in the analysis of geometric models and the results are compared with STRAP software. This study makes an attempt, to develop efficient geometric models for new constructions, and to provide necessary structural configuration against retrofitting of the existing structures, constructed in earthquake prone regions
Review of Research on Composite Steel-Concrete Beams
Summary of theoretical and experimental studies of composite beams carried out in period 1920-1958 in United States and abroad; discussion of basic assumptions of both elastic and ultimate strength theories. (61 refs.)