南部嘉陵江大桥加固过程有限元分析

Finite Element Analysis on the Whole Process of Nanbu Jialingjiang Bridge Strengthening

利用通用的有限元软件 ,建立南部嘉陵江大桥主跨两孔危桥状态、加固各阶段、加固后运营状态有限元模型 ,计算分析危桥状态和运营状态主拱圈极限承载力以及加固各阶段主拱圈在自重作用下内力变化情况 ,说明加固措施的可行性。

By means of the Finite Element Analysis(FEA) software,this paper establishes FEA model of Nanbu Jialingjiang bridge in the stages of dangerous, strengthening and strengthened, analyzes ultimate load capacity of main arch of the bridge in dangerous state and strengthened bridge and inner force changing of main arch under gravity during strengthening process, and proves the method justified.