2A1-B04 可変形状トラスを用いた可動型屋根構造に関する研究 : 第6報、大型可動モニュメントへの適用と運用結果

概要

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VGT is a truss structure composed of elastic actuator, fixed members and the hinge, and various shapes can be produced by controlling the length of actuator. The application of VGT is wide and it can be used by various construction uses. In the part 6, the result of a first application of large monument using VGT in an international EXPO 2005 Aichi Japan is described. The whole of monument were composed of three adaptive towers divided four frames connected by VGT actuators. The length of tower was about 18m and the maximum angle of tower tip was moved from -7 to 54 deg. based vertical axis. When the monument was designed, the adequate security was examined and the public estimation of structure design was acquired. The earthquake force on a rooftop structure and the wind loading were used as a design condition, and the section shape of material that secured the adequate security and the specification of the VGT actuator were decided. The Expo was being held, the monument was operated continuously for about 13 hours a day, and there were neither a breakdown once nor an accident by 185 days. A safe and excellent continuous performance was achieved, and the monument was able to receive the high appraisal by promoters and many attendances.
一般社団法人日本機械学会の論文