Cyclically Loaded Concrete Beams with Web Openings


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Title: Cyclically Loaded Concrete Beams with Web Openings

Author(s): Richard S. Pool and Rogerio Lopes

Publication: Journal Proceedings

Volume: 83

Issue: 5

Appears on pages(s): 757-763

Keywords: beams (supports); cyclic loads; fatigue (materials); finite element method; openings; photoelasticity; reinforced concrete; stress concentration;web reinforcement.

Date: 9/1/1986

A photoelastic study is made on clear polyester beam models with web openings under midspan concentrated loads, with various shapes web openings used to find the shape of opening least prone to stress concentration. These results are corroborated by a finite element study. Full-scale reinforced concrete beams with web openings are subjected to cyclically applied dynamic loads in order to determine their performance. Results of these tests are presented and the relationship of performance versus shape and type of reinforcement is examined.