摘要
为尽可能准确计算水闸工程桩基础的水平位移,以江苏省泰兴市天星港闸工程的群桩基础为例,运用传统m法和三维有限元法,对不同工况下群桩基础的水平位移进行了分析研究。结果表明,两种方法计算的桩顶水平位移与上下游水位差的变化关系相同,但传统m法计算结果相对有限元法计算结果偏大,且水位差越大,偏差越小;m法计算结果偏安全且较为简便实用,有限元法计算结果的可靠度和精度较高,即更加符合实际情况。实际工程设计时,如果条件许可,建议采用三维空间有限元法进行桩基础结构的数值模拟。
Taking the case of the Tianxing Sluice Project in Taixing City, Jiangsu Province, the horizontal displacement of pile group foundation under different working conditions is studied by using traditional M - method and three - dimensional Finite Ele- ment Method （FEM） . The analytical results show that the relation between horizontal displacements at pile top and the change of water level difference of upstream and downstream calculated by the two methods are consistent with each other; the displacement calculated by traditional M - method is larger than that of the FEM, the larger of water level difference, the smaller of result difference. The calculation result of M - method is relatively safe and convenient to application, and the reliability and precision of the FEM is better and more in line with the actual situation. As a result, the FEM is suggested to numerically simulate the pile foundation structure in the actual design of the engineering if conditions permit.
出处
《人民长江》
北大核心
2012年第11期25-28,共4页
Yangtze River
关键词
桩基础
M法
有限元法
水平位移
天星港闸
pile foundation
M -method
finite element
horizontal displacement
Tianxing Sluice
