承台(基础)-桩不同构造形式下桩土相互作用分析

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ANALYSIS OF INTERACTION OF PILES AND SOIL ABOUT PILED CAP (FOUNDATION) WITH DIFFERENT CONNECTION BETWEEN PILE TOP AND CAP (FOUNDATION)

摘要: 在现场试验的基础上,针对桩顶与承台连接、桩顶与基础之间设置褥垫层、桩顶与基础之间设置不同刚度的垫块三种桩与承台(基础)间不同的构造方式,通过数值分析方法对其在竖向荷载作用下的工作性状进行了对比分析,通过改变垫块的刚度分析了其工作机理。
- 常规群桩基础 /
- 刚性桩复合地基 /
- 褥垫层 /
- 相互作用 /
- 桩顶设置垫块
Abstract: Based on the field experiments, it is studied the behaviors of the three types of connection between cap(foundation) and pile top, i. e. the first type is pile top being in contact with cap, the second is the pile top being separated from foundation by a layer of sand or gravel cushion, and the third is the one with variable stiffness cushion between foundation and pile top, which are compared with numerical method.The working mechanism of the third type foundation is especially studied by changing the stiffness of the cushion in the numerical analysis.
- traditional piled raft /
- rigid pile composite foundation /
- cushion interaction /
- cushion between the pile top and cap /