论文部分内容阅读
针对山区高层建筑常采用一柱一桩,桩端为起伏变化基岩等条件,依现行桩基规范,采用m值法确定桩周地基弹性抗力系数,计算单桩桩顶的柔度、刚度矩阵;采用有限元法建立地基与地基梁总刚度矩阵;按逐步扩大子结构分析方法,分别对单跨地基梁、上部框架结构荷载及刚度的凝聚,求得两者各在桩顶处的边界结点等效荷载、等效刚度矩阵。然后按桩、地梁、框架柱在桩顶处变形协调条件建立整体刚度矩阵。对不同桩基条件进行具体分析。上述方法还适用于其它上部结构或下部结构。
For the high-rise buildings in mountainous area, one column and one pile are often used in the high-rise buildings of mountainous area. According to the current code of pile foundation, the elastic resistance coefficient of pile foundation is determined by m-value method. ; The finite element method is used to establish the total stiffness matrix of the foundation and the foundation; and according to the step-by-step expansion of the substructure analysis method, the load and stiffness of the single-span foundation beam and the upper frame are respectively coalesced, Point equivalent load, equivalent stiffness matrix. Then, according to the deformation coordination of pile, ground beam and frame column at pile top, the global stiffness matrix is established. Specific analysis of different pile conditions. The above method is also applicable to other superstructures or substructures.