[キーノート講演6]橋梁の減衰について(橋梁システムの減衰と耐震設計)

概要

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Bridge structure is composed of various elements such as a superstructure, piers, bearings, foundations and their surrounding soil. Therefore, the damping property of the bridge structure depends on various factors. In this paper, a method of constructing the proportional and non-proportional damping matrix for a bridge structure is illustrated and as a example, the damping property of a pier-foundation-soil system with respective damping matrix is examined by paying attention to the modal damping ratio and the maximum response. Furthermore, the natural vibration and damping characteristics of a simple beam with bearings is examined by experimental observation and numerical analysis with rigid-body-spring model. The frictional damping of the roller bearing and the viscous damping of the beam element are distinguished as the damping factors of the simple beam structure.
一般社団法人日本機械学会の論文
2002-01-11