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本文针对单线铁路混凝土重力式桥墩,研究了考虑材料非线性和几何非线性的分析方法。用编制的计算程序,计算了截面轴力-弯矩-曲率关系,并进行了桥墩在承受逐渐变化的侧向力作用下荷载-位移的全过程分析,在使用合理的本构关系和计算模型的基础上,用本文研究的方法对桥墩进行非线性分析,可以模拟桥墩从开始受荷、开裂直至破坏的全过程。为研究桥墩的极限承载能力和极限变形能力,以及考虑非线性性态的设计方法提供了理论分析手段。
In this paper, aiming at the single-track railway concrete gravity piers, the analysis method considering material nonlinearity and geometric nonlinearity is studied. The calculated axial-moment-curvature relationship of the section and the whole process analysis of the load-displacement of the piers subjected to the lateral force subjected to the gradual change were calculated by using the programmed program. By using reasonable constitutive relation and calculation model Based on the nonlinear analysis of bridge piers, the method studied in this paper can simulate the whole process of bridge pier from the beginning to the cracking and cracking. It provides a theoretical analysis method for studying the ultimate bearing capacity and ultimate deformation capacity of piers, and considering the design method of nonlinear behavior.