Behaviour of composite beams in moment resisting frames

• Type: Article in International Conference Proceedings Book
• Date: 2002

Authors

José Miguel Castro (Author) FEUP; A. Y. Elghazouli (Author) Other

Indexing

ISI Proceedings

Scientific classification

CORDIS: Physical sciences

Other information

Abstract (EN): The effective size of composite beams consisting of steel members and reinforced concrete slabs is examined in this paper. In particular, the applicability of the slab effective width representations recommended by existing codes of practice, to the seismic design of moment-resisting composite frames, is assessed. This is of particular importance for the appropriate application of capacity design procedures utilised by most codes for earthquake-resistance. Results from analytical parametric studies, carried out on idealised beam-slab configurations in composite moment resisting frames using three-dimensional finite element models, are summarised. The effect of salient geometric and material parameters on the extent of effective width that may be used in design calculations is investigated. Most importantly, the influence of the beam stiffness and capacity, which is not adequately reflected in design methods, is highlighted. It is shown that whereas current code assumptions are suitable for gravity loading in static conditions, modifications are required for a rationale implementation of capacity design principles in the case of seismic loading.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10