最適制御理論を用いたアーチ構造物のアクティブ制振

概要

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This paper deals with the active vibration control of arch structures by numerical analysis. Control forces are added to the specified members of arch in order to reduce response displacements of the entire structure. The controller to compute the control force is designed on the Optimal Control Theory. The bending moment or axial force is adopted as the control force. At first, the influences of the position of controlled arch member and difference of control force on control effects are examined. The control force for these examinations is added to one specified member. Next, the control by adding the control forces to two specified members is carried out. The combinations of controlled members are in symmetrical position or in asymmetrical position with respect to the apex of arch. From the numerical results, it is concluded as follows. In the case of the control by bending moment, most effective controlled positions are in the vicinity of antinode of the dominant mode, which is the first antisymmetrical mode. In the case of combination of controlled members with higher control effect, the control forces per member for control by two members are smaller than the control force by one member. In addition, the response reduction of control by two members is more effective.
一般社団法人日本建築学会の論文
2011-03-25