基于有效应力原理的基底压力的理论研究

THEORETICAL STUDY OF THE FOUNDATION PRESSURE BASED ON EFFECTIVE STRESS PRINCIPLE

基于有效应力原理对基底压力进行分析,推导了偏心荷载作用下基底压力的相关计算式,分析发现与现行土力学理论的计算结果存在不同。通过举例对两种方法的计算结果进行了对比,结果表明,当弯矩增大到一定程度后,两种方法计算得到的基地最大压力和基底压力分布范围均不相同。基于有效应力原理的基底压力计算更能体现有效应力原理在土力学理论中基础和核心地位。

Based on the principle of effective stress,the foundation pressure is analyzed,and the related calculation formula of foundation pressure under eccentric load is deduced,The analysis found that it is different from the calculation results based on the current soil mechanics theory.The calculation results of the two methods are compared by way of example.The results show that when the bending moment increases to a certain extent,the distribution range of base pressure and base maximum pressure calculated by the two methods are different.The foundation pressure calculation based on the effective stress principle can better reflect the basic and core position of the effective stress principle in the soil mechanics theory.