Deterministic Design Procedure for Ductile Frames in Seismic Areas

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Title: Deterministic Design Procedure for Ductile Frames in Seismic Areas

Author(s): Thomas Paulay

Publication: Special Publication

Volume: 63

Issue:

Appears on pages(s): 357-382

Keywords: beam-column frame; beams (supports); bond (concrete to reinforcement); columns(supports): deformation; ductility; earthquake resistant structures; failures; flexural strength; frames; joints (junctions); lateral pressure;

Date: 8/1/1980

Abstract:
The concepts of capacity design philosophy, which aims to ensure a desirable sequence in the plastification of ductile frames during severe seismic excitation, are introduced, In the establishment of desirable strength hierarchies the relationship between beam load inputs and ideal column strengths are examined in detail. Simple procedures, that recognise relative strength values and general characteristics of dynamic behavior, are proposed for the evaluation of moments, axial and shear forces for columns of frames. The proposals intend to ensure a high degree of protection against premature damage to columns, and to eliminate the possibility of concentrated energy dissipation in storey mechanisms in frarnes that may be subjected to unidirectional earthquake attack or to concurrent orthogonal seismic excitations. Because hinging is not expected in upper storey columns, the re-quirements for confining reinforcement in the end regions of these columns can be greatly relaxed.