送電用鉄塔の架渉線 : 鉄塔連成系地震応答に関する研究

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タイトル別名
  • STUDY ON SEISMIC RESPONSE CHARACTERISTICS OF TRANSMISSION STEEL TOWERS CONSIDERED WITH INTERACTION BETWEEN TOWERS AND OVERHEAD WIRES
  • ソウデンヨウ テットウ ノ カショウセン テットウ レンセイケイ ジシン オウ

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抄録

It is well known that seismic response of a transmission steel, tower is affected by the reactions of the neighborly towers connected with overhead wires. We have applied the frequency response method as the seismic response analysis to investigate characteristics of towers connected with overhead wires. This method is effective to easily ex-amine the response characteristics affected by phase differences and-stiffness of the-neighbors. And also this method needs less calculation time, since we can execute the unit tower model which has the spring elements taken into consideration of the effects of overhead wires. Then, we find that the response regions can be restricted by the present analysis method, which is compared with the multi-mass-points model analysis. Under the general condition, we also limit the response reagion by using the simultaneous phase analysis. Consequently, based on results of the present analyses, we proposed the modefied aseismatic design method including the general idea of "story-moment".

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