| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pipe roof capable of obtaining a required load resistance while using steel pipes of a commercial standardized product without increasing the thickness or dimensions of the steel pipes, even if receiving overburdened pressure at great depth, resolving the concentration of shear stress and the like on a joint part connecting the steel pipes, and having high durability; and a constructing method the pipe roof without increasing a construction cost. <P>SOLUTION: A steel-pipe unit laminated body 20 is formed by laminating at least two or more steel units 10 made from a plurality of steel pipes 1, ... in parallel with each other. In the laminated body 20, tensioning materials R1, R2, R4 are arranged in an area surrounded by the plurality of the steel pipes 1, .... At least the surrounded area is blocked by a concrete C2 to form the pipe roof 100. <P>COPYRIGHT: (C)2012,JPO&INPIT |
