| 摘要 |
<p>The present invention relates to a composite beam. More specifically, a protrusion unit is formed on the upper part of the concrete on a beam to form the vertical cross section of the concrete in an inverted T-shape to increase the depth of a PC member, thereby increasing the resistance strength and reducing the sagging of the beam. The composite beam also includes: the highly rigid PC member which can apply a large tension force upon being prestressed; and a simple and economical coupling unit which has an apparatus for coping with a tensile force generated on an embedded member for coupling due to the eccentricity occurring when a small beam is coupled.</p> |
