异型桥墩计算分析

Calculation and Analysis of a Special-shaped Pier

异型拱桥本身受力复杂,为了适应异型结构而设计了大悬臂盖梁。在支反力作用下,大悬臂盖梁承受较大弯矩和剪力,为考察结构安全须对其进行抗剪和抗弯计算。采用规范方法、有限元方法,对大悬臂盖梁进行抗弯、抗剪、应力计算,详细列出了计算过程和结果,并对计算结果进行分析。计算结果表明结构在配置适当预应力情况下受力良好,可为类似结构提供设计、计算参考。

The special-shaped arch bridge itself is complicated in force, and a large cantilever bent cap is designed to adapt to the special-shaped structure. Under the action of the supporting reaction, the large cantilever bent cap is subjected to large bending moment and shearing force. It is necessary to calculate the shear and bending resistance for structural safety. In this paper, the standard method and the finite element method are used to calculate the bending resistance, resisting shear and stress of the large cantilever bent cap. The calculation process and results are listed in detail, and the calculation results are analyzed. The calculation results show that the structure is well stressed under the condition of proper prestressing, which can provide the design and calculation reference for the similar structures.