Title:
Studies of Disturbed Regions Near Discontinuities in Reinforced Concrete Members
Author(s):
William D. Cook and Denis Mitchell
Publication:
Structural Journal
Volume:
85
Issue:
2
Appears on pages(s):
206-216
Keywords:
beams (supports); brackets; corbels; deep beams; detailing; finite element method; openings; reinforced concrete; shear properties; structural analysis; structural design; Structural Research
DOI:
10.14359/2772
Date:
3/1/1988
Abstract:
Discontinuities caused by abrupt changes in cross-sectional dimensions by concentrated loads result in what is termed disturbed regions, due to the disturbance in the flow of the stresses around the discontinuities. Use of simple strut and tie models to analyze and design disturbed regions such as corbels, dapped-end beams, beams with openings, and deep beams is explained. Strength predictions of a corbel and a dapped-end beam using strut and tie models are compared with test results. Complete response predictions using a nonlinear finite element computer program are used to verify the strut and tie models and to provide further insight into the response of disturbed regions.