将梁函数组合法应用到求解双壳系统的固有特性，得到了双壳系统有电磁刚度项时的固有频率和振型。
A combination method of the beam function is used for obtaining the natural characteristics of the double shell system.
该正交三梁模型可准确模拟基础刚度矩阵的各主元素和交叉项，简单实用，便于结构有限元建模，具有推广价值。
The present model, as a simplified, practical but precise method, can simulate foundation stiffness matrix including the principal terms and the cross terms. It is worthy of widely application.
并提出共同作用变刚度调平优化设计概念与方法，应用于7项工程，收到了大幅节约桩基造价、减小差异沉降的效果。
This paper presents the balance settlement optimum design method based on variable rigidity, which has been applied in 7 projects with excellent results obtained.
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