永安桥

首先利用ANSYS程序建立了永安桥的动力计算模型，通过模态分析得到该桥的动力特性。采用标准反应谱作为输入的谱曲线，分别考虑了纵向、横向、竖向输入下该桥的地震响应。

Firstly , the dynamic calculation model of the Yong-an Bridge is developed with ANSYS and the dynamic properties are obtained through modal analysis during which the standard seismic response spectrum is inputted from longitudinal , transverse and vertical direction respectively .

本文在国内外有关研究成果的基础上，利用ANSYS结构分析程序，采用谱分析和动态时程分析两种方法对永安桥进行了地震反应计算，得到了该桥的地震反应规律。

On the basis of the study achievements at home and abroad , the spectral analysis theory and dynamic time-history analysis are both used to calculate the earthquake response of the Yong-an Bridge with ANSYS and the laws of its earthquake response are obtained .

抚顺市永安桥加宽扩建上部结构采用一联长352m，预制安装式钢桁&混凝土连续组合梁，跨径布置为24m+2×20m+8×33m+24m。

In the widening and extension of Yonga ' n Bridge in Fushun City the superstructure uses a precast assembly type steel truss concrete continuous composite beam with the length of 352m and the span arrangement of 24m + 2 × 20m + 8 × 33m + 24m .