论文部分内容阅读
通常情况下,桩、土支承刚度差异显著,相同荷载水平下两者存在变形差,因此要实现桩土共同作用,必须要消除桩土的变形差,保证桩土的变形协调。在分析桩土共同作用机理的基础上,对现有桩土共同作用的实现方法和发展趋势进行归纳与总结并将其分为三大类:补偿位移法、刚度调整法以及预加位移法。其中,补偿位移法又包括摩擦桩复合桩基与刚性桩复合地基,刚度调整法主要为笔者提出的设置调节装置的端承桩复合桩基,预加位移法主要指桩顶设置柔性材料以及桩顶预留净空复合桩基。对上述每类所包含的具体方法进行了介绍,并对各自的适用条件、优缺点进行了对比与分析。
Under normal circumstances, the pile and soil support stiffness difference is significant, under the same load level there is a deformation difference between the two, so to achieve the common role of pile and soil, we must eliminate the poor deformation of pile and soil to ensure the deformation of pile and soil coordination. Based on the analysis of the mechanism of pile-soil interaction, this paper summarizes the existing methods and trends of the interaction between pile and soil and divides them into three categories: compensation displacement method, stiffness adjustment method and pre-displacement method. Among them, the compensation displacement method includes the composite foundation of the friction pile composite foundation and the rigid pile. The adjustment method of the rigidity is mainly the composite pile foundation of the end bearing pile with the adjusting device provided by the author. The pre-addition displacement method mainly sets the flexible material of the pile top, Top reserved clearance compound pile foundation. The specific methods included in each category are introduced, and their applicable conditions, advantages and disadvantages are compared and analyzed.