| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To mount an auxiliary tower member inside a steel tower, cut off in an intermediate part of the steel tower, and elevated an upper part using a tower member to construct a new elevated steel tower when raising an existing steel tower. <P>SOLUTION: In this elevating work for constructing the elevated steel tower by cutting off in the intermediate part of the steel tower, raising an upper part structural body using the tower member 20, and assembling an additional tower member 12 in an elevated part 10 to connect upper and lower structural bodies as an integral structure, a lower part of the tower member 20 is guided by guide members 30, 30a provided in the lower part structural body of the steel tower and a wire 16 is wound by a winch to perform the work. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
