摘要
应用弹性理论中的变形协调关系、物理方程和力的平衡关系,研究了包含不同桩长、桩半径和刚度特性的竖向荷载作用下桩基础的分析方法。桩侧摩阻力分布采用幂函数有限项级数的表示方式,推导得出了联系桩顶荷载和桩顶位移之间的刚度矩阵,进而根据群桩荷载可方便求得桩基位移,从而形成一种分析竖向荷载下桩基础的通用分析方法。并针对不同的桩基布置形式与应用ANSYS商用软件分析的有限元方法结果进行比较,结果表明本文方法不仅精度上满足要求,而且计算矩阵仅与群桩中桩数相关而与其它变量无关,分析过程更简便。
The analysis method for pile foundations under vertical loading is studied by using the theory of elasticity.Lateral resistance on pile shaft is simulated with power function series.The stiffness matrix relating to the force and displacement at pile top is derived.The results are compared with those obtained from the finite element method(using a commercial software ANSYS).The comparison indicates that the proposed analysis method is reasonable and it provides accurate numerical solution,Besides,the calculation process involved is relatively simple in that the stiffness matrix is related only to the number of piles in groups.
出处
《土木工程学报》
EI
CSCD
北大核心
2006年第5期96-101,共6页
China Civil Engineering Journal
关键词
桩基础
竖向荷载
位移
侧摩阻力
通用分析方法
pile foundation
vertical loading
displacement
lateral resistance
general analysis method
