摘要
针对某线下承式铆接钢桁梁桥净空(轨顶至楣杆底)不满足通行铁路双层集装箱和电气化改造的要求,提出4个不同的改造方案。应用通用结构分析软件Midas Civil 2006对各种方案下桥梁的主要性能指标进行计算,经过对比分析发现,只对影响净空的横联进行改造,可有效改善桥梁的横向刚度,且施工最为简便。
It provides four different approaches to resolve the problem that the headroom of a steel truss bridge cannot meet the requirement of double-layer container and electrical reconstruction. The structural analysis software Midas Civil 2006 is adopted to calculate and analyze the essential parameter of the bridge. Through comparison and analysis, it is found that reconstruction only to the transverse interlink affecting the bridge headroom can improve the transverse stiffness effectively and the construction is very simple.
出处
《钢结构》
2009年第5期47-50,共4页
Steel Construction
关键词
钢桁梁桥
改造
自振频率
刚度
steel truss bridge
reconstruction
natural vibration frequency
stiffness
