送電線吊架ジャンパ装置と鉄塔本体との動的相互作用に関する基礎的研究 : 送電線吊架ジャンパ装置及び塔体の加振試験と強風観測

概要

論文の詳細を見る
Hanging jumper beams are adopted as a countermeasure against oscillations of jumper conductors under strong winds. However, dynamic properties and behaviors of the hanging jumper beams under strong winds are not revealed in detail. Then the authors have conducted an excitation test of an actual tension transmission tower to comprehend the dynamic behaviors of the hanging jumper beam. As a result, when the tower and a hanging jumper beam were excited respectively, it was recognized that dynamic interactions between the tower and a hanging jumper beam were different in each test. And several geometrical non-linear numerical analyses of the corresponding 4towers-3spans coupling model were performed to simulate the vibration test results. The dynamic behaviors of the hanging jumper beam by the simulations denoted the same tendency of the test results. Moreover, some results of our wind response measurement under a wind of about 10m/s revealed that the dynamic behaviors of the hanging jumper beam under a strong wind were more complicated than under a light wind due to the effects of cross arms, tower, conductors and insulators.
一般社団法人日本建築学会の論文
2008-03-25