纳界河特大桥缆索系统主地垄有限元仿真分析

纳界河特大桥全长810.1 m,主桥长352.0 m,主桥结构为上承式钢桥提篮拱桥,采用大型缆索吊装系统和扣挂系统施工。其中主地垄是桥梁吊装缆索系统的一个重要组成部分。应用ABAQUS及其混凝土CDP本构模型,对纳界河特大桥缆索系统的主地垄进行了仿真分析,论证了主地垄在施工荷载作用下的安全性,提出了今后进行类似结构设计时应注意的事项及改进方向。

Finite Element Simulation Analysis on Main Ridge for Cable System of Grand Najiehe Bridge

Grand Najiehe Bridge is 810.1 m long; and the main section 352 m long. The bridge is structured as top-bearing basket handle steel arch bridge, and built by large cable hoisting system and buckle hang system, wherein the main ridge is an important component of the cable hoisting system. The ABAQUS and the concrete CDP constitutive model are utilized to carry out simulation analysis on the main ridge, the results demonstrated its safety under the action of construction loads, and then advised the cautions in the design of similar structure and the improvement direction in the future.