多支承連續曲橋之地震反應分析

Abstract

本文分別以柔度法與有限元素法所推導出之空間曲梁元素，經由特徵分析作一精確性之比較。此外，傳統橋梁結構在進行動力分析時，一般僅就同步支承輸入效應予以探討，本文將針對直線橋梁與曲線橋梁，進一步考慮多支承輸入之效應。結果顯示，一般同步支承輸入效應未必保守、安全，因此橋梁多支承輸入效應之評估則有其必要性。

In this thesis, the space curved beam element is derived based on the method of flexibility matrix and the finite element method that are compared by characteristic analysis. Moreover, traditional bridge structural dynamic analysis processes with identical support excitation, the effect of multiple support excitation takes into account for continuous straight bridges and continuous curved bridges in this thesis. In the results, it is not conservative and not safe in the analysis of identical support excitation, so it is necessary to estimate the effect of multiple support excitation in the bridge dynamic analysis.