| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a composite beam structure capable of resisting the vertical load of a long-span structure. <P>SOLUTION: A composite beam 14 has: a reinforced-concrete beam member 15; beam steel frames 28 joined to junctions 40 embedded in both ends of the beam member 15 and provided on pillars 12, respectively; and PC steel wires 34 provided from one end of the beam member 15 to the other end thereof and introducing compressive force to the beam member 15. Because the beam steel frames 28 are embedded in the both ends of the beam member 15 respectively and thus the beam steel frames 28 and the beam member 15 are joined together, then the PC steel wires require no prestress force for joining the beam member 15 and the beam steel frames 28 together and the prestress force can be freely set. Therefore, even if the required span of the composite beam 14 becomes longer, the prestress force required for the beam member 15 can be introduced by the PC steel wires 34 and the composite beam 14 can resist the vertical load of a long-span structure. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
