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长沙市福元路湘江大桥主桥是世界上首座采用整体顶推法施工的三跨提篮式拱梁组合体系拱桥。基于设计参数和顶推施工方案,应用Midas/Civil软件建立空间杆系有限元模型,进行顶推施工全过程的仿真分析。分析结果表明:前、后导梁及临时撑杆等临时结构设置合理,顶推过程中顶推钢结构最不利应力值均小于材料容许应力,福元路湘江大桥主桥钢拱梁带载整体顶推方案总体安全可行。
Changsha Fuyuan Road Xiangjiang River Bridge The main bridge is the world’s first push the whole construction of the three-lift basket type arch bridge system arch bridge. Based on the design parameters and the push construction scheme, the finite element model of the space bar was established by using Midas / Civil software to simulate the whole process of jacking construction. The analysis results show that the temporary structures such as the front and rear guide beams and the temporary stays are reasonable and the most unfavorable stress values of the push steel structure are less than the material allowable stress in the pushing process. The steel arch beams of the main bridge of the Fuyuan Road Xiangjiang River Bridge carry the whole roof Push the overall safety of the program feasible.