| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain floor extension and blow-bye space forming without being accompanied with large-scale work and also to secure sufficient strength as a structure of an extended floor part or a floor part before the blow-bye space is formed. <P>SOLUTION: In a two-storied building 10, a floor structure is provided in a boundary section between adjacent upper and lower floors thereof. The floor structure consists of first floor beams 31 and second floor beams 32, and has a section A provided with a communication part 25 for the upper and lower floors. A first floor beam 31a and a second floor beam 41c, which become long side parts A1 of the section A, are in parallel with each other, and a movable small beam 51 is bridged between the two floor beams 31a and 41c. The movable small beam 51 is supported in its bridged state so as to be movable along a direction where the floor beams 31a and 41c extend. <P>COPYRIGHT: (C)2012,JPO&INPIT |
