| 摘要 |
PROBLEM TO BE SOLVED: To achieve increase in bending and torsional rigidity of a support structure by fitting auxiliary wall surface supports which are normally the same in structure on a basic wall surface support of a support structure by flanges. SOLUTION: A moving footpath of a frame system structure is formed by two wall surface supports connected to each other by a cross beam. The connecting part is produced by the lengths of extension and contraction trusses 12, 13 of the wall surface supports, and in addition to the length of the limited material, it is caused by manufacture or assembling technology. The inclined trusses 12, 13 include welding flanges at the connecting part, and at the time of assembling, the wall surface supports are integrally assembled by screw connection. Thus, large bending or torsional vibration containing instablility or danger can be most easily prevented by realizing a support structure having high rigidity and light weight.
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