论文部分内容阅读
通过建立空间杆系有限元模型,进行模态分析,得到之江大桥主桥的动力特性。采用反应谱和时程分析2种方法进行地震反应研究,两水准设防准则下之江大桥索塔处于良好弹性状态,表明之江大桥具有优良的抗震性能,体现出钢结构轻质高强抗震能力强的特点。
The dynamic characteristics of the main bridge of the Zhijiang Bridge are obtained through the establishment of the finite element model of the space bar and modal analysis. The seismic responses are studied by two methods of response spectrum and time-history analysis. The two-level fortification criterion of the tower under the bridge is in a good state of elasticity, which shows that the bridge has excellent seismic performance and shows the light-weight and high-strength seismic performance of the steel structure specialty.