大挑臂拱形墩的受力分析

Stress analysis of arch pier with lai^e cantilever

大挑臂拱形墩结构受力复杂,不能简单地将拱形墩简化成杆系结构。本文结合实际工程对拱形墩分别按杆系模型和有限元模型进行结构计算和受力分析,对比结果得知两种情况下的拱形墩盖梁受力偏差不大,但下部结构立柱的受力差别较大。对今后该种结构的受力与应用有参考价值。

the arch pier structure with large cantilever arm has complex stress,so it can't be simplified as a bar system structure.In this paper,combined with the actual project,the structural calculation and stress analysis of the arch pier are carried out according to the bar system model and the finite element model respectively.The comparison results show that the stress deviation of the arch pier cap beam in the two cases is not big,but the stress difference of the column in the lower structure is laige.It is of reference value to the stress and application of this kind of structure in the future.