CAJ | 학술논문

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.
정지토압력계수시암토공정영역중일개지관중요적삼수,시학정수평장지적응력상태화계산정지토압력적기출.단목전대정지토압력계수적연구환불구.대자연퇴적이성처우림계상태적사퇴내응력상태진행분석,추도출자연고결토적정지토압력계수적이론표체식,병여사성토정지토압력계수표체식k0=0.95-sin?화점성토정지토압력계수표체식k0=1-sin?진행대비,결과표명,추도적정지토압력공식여사성토상용표체식비상문합,여점성토상용표체식존재일정편차.문중급출적정지토압력계수공식화추도,교위과학합리지천술료상용정지토압력계수적유래,유효미보료당전저괴연구적공백,위정지토압력계수적실내、현장시험화경험공식적추도제공료이론지탱,기도료일정적추진작용.
The coefficient of earth pressure at rest is a critical parameter in the field of geotechnical engineering, which is the foundation of determining the stress state in horizontal site and the calculation of earth pressure at rest. However, at present the study of the coefficient of earth pressure at rest is not enough. The theoretical formula of coefficient of earth pressure at rest of normally consolidated soils is derived from the analysis of the internal stress state of sand prism with natural accumulation stayed in a critical state. Compared with the formula k0=0.95-sin?(k0 stands for the coefficient of earth pressure at rest,?stands for the inner friction angel of soil;the same as below) proposed for the coefficient of earth pressure at rest on sandy soil and with the formula k0=1-sin?proposed for the coefficient of earth pressure at rest on clay;the results show that the formula for the coefficient of earth pressure at rest matches very well with the regular formula for sandy soil and has a little bias with the formula proposed for clay. The formula and its derivation of the coefficient of earth pressure at rest in this paper are scientific and reasonable to express its origin, which makes up the blank in this study area, provides the theoretical support and plays a certain role in the promotion of the derivation of the coefficient of earth pressure at rest of indoor, field test and empirical formula.