桩土作用下连续刚构桥动力特性分析

摘要

以欧拉弹性理论为基础,桩土作用为桥梁结构影响因素,运用空间有限元法对昆明某高墩大跨径连续刚构桥进行动力特性分析.计算结果表明,在动力特性方面,桩-土效应对高墩大跨连续刚构桥有着十分显著的影响.因此在进行高墩大跨连续刚构桥的动力特性分析时,考虑桩-土作用是十分必要的.%Based on the theory of Euler elasticity,the pile-soil interaction is the influence factor of the bridge structure,and the dynamic finite element method is used to analyze the dynamic charac-teristics of a long-span continuous rigid frame bridge in a high pier in Kunming.The results show that the pile-soil effect has a significant effect on the high-span long-span continuous rigid frame bridge in the dynamic characteristics.Therefore,it is necessary to consider the effect of pile-soil when analyz-ing the dynamic characteristics of high-pier long-span continuous rigid frame bridge.