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本文用[1]、[2]、[3]中提出的分区混合能量原理和分区混合有限元法分析框支剪力墙结构。在应力梯度大的区域用应力单元,文中用半无限平面问题的解叠加低次多项式组合出应力函数。在应力梯度小的区域用位移单元,文中用八结点等参数单元。由于针对问题的受力特点,把应力元和位移元加以结合,各自发挥特长,能以较疏的网格取得较高的精度。
In this paper, the partitioned hybrid energy principle and the partitioned mixed finite element method proposed in [1], [2], and [3] are used to analyze the shear wall structure of framed support. The stress element is used in the region where the stress gradient is large. In this paper, the stress function is combined using the solution of the semi-infinite plane problem and the low-order polynomial. The displacement unit is used in the area where the stress gradient is small, and the parameter unit such as eight nodes is used in the text. Due to the stress characteristics of the problem, the stress element and the displacement element are combined to give full play to their strengths, and high accuracy can be achieved with a sparse mesh.