基于布西奈斯克解的堆载土体水平位移解答

摘要

Surcharge loadings are often encountered in the harbor and wharf engineering. How to determine the lateral soil movement has direct relations with the analysis of engineering safety. Based on the Boussinesq' s solution, theoretical formulae of the soil movement due to surcharge loads are deduced out via solving the double integral of loading area. The present solution is verified by comparison with the elastic finite element a-nalysis. Furthermore, the parametric analysis on some key factors, such as the Poisson' s ratio, elastic modulus, and the distance between the soil and the surcharge loading, are carried out. The conclusions have important reference values to the engineering of surcharge loadings.%在港口码头等工程中常常遇到地面堆载作用,堆载土体水平位移场的合理确定直接关系到工程安全.基于竖向荷载作用下的布西奈斯克水平位移解,通过对地面堆载作用效应进行二重积分,求解得到堆载作用下土体水平位移场的解析表达式,与有限元计算结果对比验证了解答的正确性.重点分析了土体泊松比、弹性模量以及堆载距离等参数对土体水平位移场的影响,计算结果对于类似堆载工程的变形分析具有重要参考价值.