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静止土压力系数是岩土工程领域中一个至关重要的参数,是确定水平场地的应力状态和计算静止土压力的基础。但目前对静止土压力系数的研究还不够。对自然堆积而成处于临界状态的砂堆内应力状态进行分析,推导出自然固结土的静止土压力系数的理论表达式,并与砂性土静止土压力系数表达式k0=0.95-sin和黏性土静止土压力系数表达式k0=1-sin进行对比,结果表明,推导的静止土压力公式与砂性土常用表达式非常吻合,与黏性土常用表达式存在一定偏差。文中给出的静止土压力系数公式和推导,较为科学合理地阐述了常用静止土压力系数的由来,有效弥补了当前这块研究的空白,为静止土压力系数的室内、现场试验和经验公式的推导提供了理论支撑,起到了一定的推进作用。
Static earth pressure coefficient is a crucial parameter in the field of geotechnical engineering. It is the basis for determining the stress state of horizontal ground and calculating the static earth pressure. However, the research on static earth pressure coefficient is not enough at present. This paper analyzes the stress state of the pile in the critical state and deduces the theoretical expression of the coefficient of static earth pressure of the natural consolidation soil and correlates it with the expression of static earth pressure coefficient k0 = 0.95-sin and The comparison of static earth pressure coefficient expression k0 = 1-sin of clay shows that the formulas of static earth pressure deduced by the authors are in good agreement with the common expressions of sand soil, and there are some deviations from the common expressions of clay. The formula and deduction of the static earth pressure coefficient given in this paper are more scientific and rational elaboration of the origin of the commonly used static earth pressure coefficient effectively to make up for the current blank of this study for the static earth pressure coefficient of indoor and field experiments and empirical formula Deduction provides a theoretical support, played a certain role in promoting.