弾性節点・弾性支点を有する骨組構造物の動的解析法

抄録

A dynamic analysis method of frame-structure with elastic nodes and supports is proposed to evaluate its natural frequencies and mode shapes. In this study, the theoretical development of the analysis for three-dimensional beam structures is mainly noticed, which has been applied to the case of continuous girder bridges before. The basic unknowns of equations are integral constants in general solutions same as before, whereas bending, torsional and axial forces and deformations are taken into considerations. Nodal imperfections between beam member as well as support restrictions are modeled by using each elastic springs so that the dynamic properties of the structure with these conditions can be accurately estimated in the analysis. The method composed herein will be highly useful to the dynamic analysis of such structures, e. g. highway bridges, buildings, etc.