| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a support structure which is excellent in economical efficiency and can effectively improve work efficiency and load bearing ability. <P>SOLUTION: From an upper part 13 of a large-diameter pipe 7 above the installation surface to a lower part 11 of the large-diameter pipe 7 below the installation surface, a middle-diameter pipe 8 as reinforcement material is inserted into the large-diameter pipe 7, and a small-diameter pipe 9 as reinforcement material is inserted into the middle-diameter pipe 8, thereby constituting a triple pipe. <P>COPYRIGHT: (C)2013,JPO&INPIT |
