The whole stiffness matrix of structural system is derived by condensation approach.
分析了结构运动方程，并采用缩聚法建立结构总侧移刚度。
Because of the similarity of these sub-elements, the coefficients of stiffness for the nodes of the same zone (material) are equal in the whole stiffness field of the structure.
由于子元间的相似性，结构的整体劲度场中同一类型的结点，其劲度系数是相同的。
Based on the current studies on large pile groups, an analytical method considering slip of piles and soil and dynamic adjustment of integral whole stiffness of pile groups was put forward.
在分析了大型群桩研究现状的基础上，提出了考虑桩土滑移和群桩桩顶整体刚度动态调整的分析计算方法。
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