高家花园复线桥0号块应力分析

大跨连续刚构桥梁0号块梁段的空间构造和受力比较复杂，全面分析其空间应力状态非常重要。文章以重庆市高家花园跨嘉陵江复线大桥为研究对象，利用有限元程序MidasFEA建立了该桥的0号块空间模型，并通过对该块件最大悬臂工况和最不利使用阶段工况下加载截面的荷载内力进行分析，得到了0号块应力分布特征，为类似桥梁的设计提供参考依据。

Stress Analysis on 0# Block of Gaojia Garden Multiple-track Bridge

The space structure and force of 0# block beam segment in large-span continu- ous rigid frame bridge is relatively complex, thus the comprehensive analysis of its spatial stress state becomes very important.With Gaojia Garden Multiple-track Bridge across Jial- ing River in Chongqing as the research object,this article used the finite element program Midas FEA to establish the 0# block space model of this bridge,and through analyzing the load internal forces of loading segments for this block piece under the biggest boom condi- tions and under the work conditions at most unfavorable usage phase,the stress distribution characteristics of 0# block were obtai ned, thereby providing the reference for the design of similar bridges.