劲性搅拌桩复合地基非线性有限元分析  

Finite Element Analysis for Composite Foundation of Reinforced Mixing Pile

作　　者：盛桂琳[1] 鲍鹏[1] 孔德志[1] 

机构地区：[1]河南大学,河南475001

出　　处：《结构工程师》2005年第3期56-59,共4页Structural Engineers

摘　　要：以有限元程序ANSYS为工具,对劲性搅拌桩单桩的工作性状进行了分析研究。软土中不同芯桩长度和截面含芯率的劲性搅拌桩的内力和变形的分析。结果表明:劲性搅拌桩的荷载主要由桩侧摩阻力承担,传至桩端的荷载所占比例很小;并且存在一个最佳芯长和最优截面含芯率。进一步与同等条件下的混凝土单桩的对比研究发现,劲性搅拌桩的性能与混凝土桩十分类似,在一定条件下可以替代混凝土桩使用。In this paper, the working behavior of reinforced mixing single piles is researched and analyzed by ANSYS software. By analyzing the stress and deformation of the reinforced mixing pile with different concrete core pile length and area replacing ratio in soft soil, it is expressed that the core pile shaft friction undertakes the mass of vertical load of the pile and a little of it can transmit to pile top, it is also founded that an optimum core pile length and an area replacing ratio of the reinforced mixing pile had been exited. Comparing the reinforced mixing pile with the concrete pile under the same condition, it is found that the working behavior of the reinforced mixing single pile is similar to that of the concrete single pile, and, the concrete pile can be taken place by the reinforced mixing pile under a certain condition.

关 键 词：非线性有限元分析 搅拌桩复合地基 劲性 混凝土桩 ANSYS 有限元程序 桩侧摩阻力 混凝土单桩 工作性状 最优截面 对比研究 荷载 内力 芯桩 软土 桩端 最佳 

分 类 号：TU473.1[建筑科学—结构工程]