| Title |
An Experimental Study of Prestressed H-Beams with Web Openings |
| Abstract |
H-shape steel beams prestressed with high-strength steel strands offer major advantages, elastic behavior to higher loads and increased ultimate capacity.This paper examines the behavior of H-shape steel beams with web openings prestressed with high-strength steel strands. In particular, the deflection and strains in the steel beam with web openings and high-strength steel strands are examined in the positive bending moment regions, over the full range of loading to failure. Three types of H-shape steel beams with web openings are considered:(1)Conventional H-shape steel beams with web openings without prestressing steel strands:(2)H-shape steel beams with web openings with steel strands anchored at the ends, but not prestressed;and (3)H-shape steel beams with web openings with steel strands prestressed. The load-deflection and load-strain behavior of these beams are compared, the experiment shows that the ultimate and the yield loads can be increased substantially by adding high-strength steel strands to the H-shape steel beams with web openings and prestressing them. |