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Mechanism Research of Arch Dam Abutment Forces during Overload

机译：拱坝基台力超载机理研究

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摘要

This paper presents research on the abutment forces of a double-curvature arch dam during overload based on numerical calculation results obtained through finite element method by Ansys. Results show that, with an increase in elevation, the abutment forces and bending moment of the arch dam increase first and then decrease from the bottom to the top of the dam. Abutment forces and bending moment reach their maximum at the middle or middle-down portion of the dam. The distributions of abutment forces and moment do not change during overload. The magnitude of each arch layer's forces and moment increases linearly during overload. This result indicates that each arch layer transmits bearing loads to the rocks of the left and right banks steadily. This research explains the operating mechanism of an arch dam under normal and overload conditions. It provides a simple method to calculate the distribution of forces F-x and F-y and a new method to calculate the overload factor of an arch dam through the estimation of arch layers based on the redistribution characteristic of arch abutment forces.
机译：本文基于Ansys有限元方法的数值计算结果，对双曲拱坝在超载过程中的支座力进行了研究。结果表明，随着海拔的升高，拱坝的支座力和弯矩先增大，然后从坝的底部到顶部减小。在坝的中部或中下部，桥墩力和弯矩达到最大值。在过载期间，支座力和力矩的分布不会改变。在过载期间，每个拱形层的力和力矩的大小线性增加。该结果表明，每个拱形层将载荷稳定地传递到左右岸的岩石上。这项研究解释了拱坝在正常和超载条件下的运行机理。它提供了一种简单的方法来计算力F-x和F-y的分布，并提供了一种新方法，可以根据拱拱支座力的重新分布特性通过估算拱拱层来计算拱坝的过载系数。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第4期|721602.1-721602.12|共12页
  • 作者

    Xia Yu; Li Chuangdi; Zhao Xiaolian; Zhang Zhongqing;

  • 作者单位

    Guangxi Univ Sci & Technol, Coll Civil & Architecture Engn, Liuzhou 545006, Peoples R China.;

    Guangxi Univ Sci & Technol, Coll Civil & Architecture Engn, Liuzhou 545006, Peoples R China.;

    Guangxi Univ, Coll Mat Sci & Engn, Nanning 530004, Peoples R China.;

    Guangxi Univ, Coll Civil & Architecture Engn, Nanning 530004, Peoples R China.;

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