MECHANICAL PROPERTIES OF ROCKFILL
MECHANICAL PROPERTIES OF ROCKFILL
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发表时间：
1973
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通讯作者：
R. J. Marsal
中科院分区：
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作者：
R. J. Marsal
给出了定量描述颗粒体固相的参数的定义。这些参数用于评估接触力。理论方面检查了作为有效应力和描述晶粒骨架参数的函数的晶粒之间的力。描述了颗粒破碎的分析和测量，颗粒破碎是接触力和颗粒破碎强度的函数。介绍了用于研究堆石料抗剪强度和应力-应变特性的装置和试样制备技术，以及在三轴和平面应变装置中测量堆石料抗剪强度的方法。讨论了晶粒破碎的影响和晶粒骨架的特征，以及试验的类型。考虑了破坏理论，提出了颗粒土摩擦阻力的评估和破坏一般准则的发展。介绍了用一维和三轴压缩试验测量其应力-应变特性，用测径仪试验分析其时间沉降曲线。提出了基于接触力研究和摩擦阻力测定的应力-应变关系。最后对堆石料的选择和性能评价提出了结论和建议。
Definitions are presented of parameters that describe quantitatively the solid phase of a granular mass. These parameters are used in the evaluation of contact forces. The theoretical aspects are examined of the forces between grains as a function of effective stress and the parameters that describe the grain skeleton. The analysis and measurement is described of particle breakage, which is a function of the contact forces and the crushing strength of the particles. The devices developed to investigate the shear strength and stress-strain characteristics of rockfills and the techniques for preparation of specimens are described, as well as the measurement of shear strength of rockfill in the triaxial and plane-strain apparatus. The effects of grain breakage and characteristics of the grain skeleton, and the type of test are discussed. Consideration is given to the theory of failure, and the evaluation of the frictional resistance of a granular soil and development of a general criterion for failure are set forth. The measurement of stress-strain characteristics by means of one-dimensional and triaxial compression tests, and analysis of the time settlement curves by oedometer tests are described. Stress-strain relationships based on the study of contact forces and the determination of the frictional resistance are presented. Conclusions and recommendations for selecting rockfill material and estimating their properties is also presented.