子结构技术在斜拉桥施工仿真分析中的应用

本文针对大跨度斜拉桥等大型复杂桥梁结构大多采用节段施工的特点,将子结构技术与节段施工方法结合起来进行桥梁施工全过程仿真分析。在阐述子结构技术分析方法的基础上,寻求合理的子结构划分方法来模拟斜拉桥的施工进程,并应用有限元分析软件ANSYS的子结构分析功能,对一座独塔斜拉桥实现了施工全过程仿真分析。结果表明,利用子结构技术可以简化施工过程的模拟并大大缩短计算时间,特别适用于复杂模型的桥梁结构分析。

Application of Substructure in the Construction Simulation Analysis of Cable-stayed Bridges

The whole procedure of bridge construction is simulated and analyzed by way of associating substructure technique with the construction method against the fact that large and complicated bridges such as long-span cable-stayed bridge usually adopt segment construction method. This paper uses a suitable meshing method of super-element to simulate cable-stayed bridges on the basis of substructuring analysis. The construction procedure of a single-tower cable-stayed bridge is simulated by substructuring in ANSYS program. Results indicate that substructuring which is applicable to the complicated bridge of structure analysis can simplify the construction process and save computing time under limited computing resource.