论有效应力原理的前世今生  

On History of the Principle of Effective Stress

作　　者：王国义 Wang Guoyi

机构地区：[1]中电建成都建设投资有限公司,四川成都610212

出　　处：《重庆建筑》2022年第12期66-68,72,共4页Chongqing Architecture

摘　　要：太沙基有效应力原理通过试验观察建立,由于与黏性土的不适应性受到众多专家的质疑。该文提出方玉树先生的水压率理论是现今水土分算与水土合算计算方法的统一,但无理论基础;引入岩土给水度,通过力平衡原理推导出竖直总应力与土骨架应力、孔隙水压力之间的关系式;详细分析了新有效应力原理的发展过程,并提出基坑支护静止侧压力和有效应力的计算新公式。相关结论可为水土侧压力计算和理论土力学的发展提供参考。K.Terzaghi’s principle of effective stress was established through experimental observation,and was questioned by many experts due to its incompatibility with cohesive soil.This paper proposed that Mr.Fang Yushu’s water pressure rate theory is a unified calculation method for wate-soil separate and combined calculations today,but it has no theoretical basis;with rock-soil specific yield of water introduced,the relationship between total vertical stress,soil skeleton stress and pore water pressure is derived based on the principle of force balance;The development process of the new principle of effective stress is analyzed in detail,presenting a new formula for calculating the static lateral pressure and effective stress of the foundation pit support.The relevant conclusions can provide reference for the calculation of lateral pressure of water and soil as well as the development of theoretical soil mechanics.

关 键 词：太沙基有效应力原理 水压率 给水度 力平衡原理 静止侧压力 有效应力 

分 类 号：TU432[建筑科学—岩土工程]