STUDY ON FREE VIBRATION OF CURVED GIRDER BRIDGES
STUDY ON FREE VIBRATION OF CURVED GIRDER BRIDGES
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曲线梁桥自由振动研究
DOI：
10.2208/jscej1949.1966.136_35
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发表时间：
1966
期刊：
影响因子：
--
通讯作者：
H. Nakai
中科院分区：
文献类型：
--
作者：
S. Komatsu;H. Nakai
曲线梁桥的自由振动研究是一个复杂的问题，因为正交方向的弯曲振动和扭转振动通常是耦合的。本文的目的是给出非对称截面曲线梁桥自由振动的基本方程，并求出频率方程的近似解。根据这些结果，提出了确定固有频率的实用公式。通过与实验结果的比较，验证了理论的正确性。
The studies on free vibration of a curved girder bridge are much complicated because the bending vibrations in orthogonal directions are generally coupled with the torsional one. The object of this paper is to present the fundamental equation for a freely vibrating curved girder bridge with an unsymmetrical cross-section and to obtain an approximate solution of the frequency equation. From these results, the practical formulae for determining the natural frequencies are proposed. Furthermore, the validity of this theory is verified by comparison with the results obtained from the experimental studies.