| 摘要 |
<p>A structural framing system (10) and method of construction in which adjacent vertical columns (18) horizontally support an open web dissymmetric steel beam (14) with trapezoidal openings (15) located along the web (14c) between a narrowed, thickened top flange (14a) and a widened bottom flange (14b). The beam's bottom flange (14b) supports precast concrete plank hollow sections (12) located perpendicular to the beam (14) so that the beam's open web (14c) is centrally disposed between end sections of the plank sections in substantially the same horizontal plane. A high-strength grout mixture (16) flows completely through the web openings (15) in a circulatory manner. This creates a substantially monolithic concrete encasement around the beam (14) that improves the resulting composite action and mechanical interlock between the steel beam (14) and concrete plank (12) and prevents loss of strength due to the grout (16) separating from either side of the beam (14).</p> |
