| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a column structure having a columns member which is subject to high axial force and made of ultra-high strength fiber reinforced concrete, which solves fireproof problem with excellent workability, having an integrated fireproof layer; and a construction method of the column structure. <P>SOLUTION: A fireproof layer 9 is provided on the circumference of a core portion 7 made of ultra-high strength fiber reinforced concrete. A low-rigidity layer 13 made of resin is provided between the core portion 7 and the fireproof layer 9. At least one place at the junction of a bearing plate 5 above the core portion 7 and the fireproof layer 9, the junction of a bearing plate 5 below the core portion 7 and the fireproof layer 9, and the intermediate portion of the fireproof layer 9 is provided with a slit 11 as a disconnection part for not transmitting axial force to the fireproof layer 9. The core portion 7 is made of ultra-high strength fiber reinforced concrete containing steel fiber, carbon fiber, glass fiber, or the like. The fireproof layer 9 is made of polypropylene fiber reinforced concrete. The low-rigidity layer 13 is made of, for example, a resin having latent heat effect. <P>COPYRIGHT: (C)2013,JPO&INPIT |
