论有效应力原理与大气压力作用力

On Effective Stress Principle and Atmospheric Pressure Force

该文引入土给水度参数,通过力平衡原理修正了竖直水土压力计算公式,提出自由水作用力在土颗粒上的传递率概念,推导出水土侧压力计算新公式,奠定了水土分算与水土合算计算公式的理论基础,实现了水土分算与水土合算的统一计算。采用同种分析方法,推导出考虑大气压力作用力条件下的饱和土和非饱和土有效应力原理公式,并推导出理论上更正确的水土侧压力计算公式。希望为理论土力学的发展和水土侧压力计算提供参考。

This paper introduces the soil water yield parameter,modifies the calculation formula of vertical water and soil pressure through the force balance principle,puts forward the concept of the transmissibility of free water force on soil particles,deduces a new formula for calculating the lateral pressure of water and soil,establishes the theoretical foundation for the calculation formulas of water and soil division and water and soil integration,and realizes the unified calculation of water and soil division and water and soil integration.By using the same analysis method,the effective stress principle formulas of saturated and unsaturated soil under the condition of considering atmospheric pressure are derived,and a more correct calculation formula of water and soil lateral pressure in theory is derived.It is hoped to provide a reference for the development of theoretical soil mechanics and the calculation of water and soil lateral pressure.