| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel tower rebuilding technology capable of safely and accurately carrying out basic system transmission line steel tower rebuilding work at a low cost within a short power transmission stop period of time. SOLUTION: In the case the existing steel tower 1 is rebuilt, the steel tower rebuilding method constructing a new steel tower A makes good use of a built-up type work bench K installed around the existing steel tower. A plurality of expansible towers 2 are erected at a regular interval around the existing steel tower 1, a supporting member 3 is erected between the expansion/contraction towers, the first process installing the work bench by having a crane device 4 capable of moving along the supporting member, the second process constructing a foundation 5 for the new steel tower by making use of the crane device after the work bench has been installed and the third process assembling a new steel tower lower area of a part near to a charging section 1b of the existing steel tower from the foundation for the new steel tower while expanding/contracting the expansion towers are carried out. COPYRIGHT: (C)2007,JPO&INPIT
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