【摘要】 <正> 概述土力学是一门应用技术科学,试验研究对本学科的发展具有举足轻重的意义.往往一个新的土力学问题的提出和解决与试验实践是分不开的,而且往往是与新的试验设备的出现和新的试验方法的实施相关联的.在研究土体的应力～应变和时间关系(本构关系式)、土的破坏条件与强度实质问题、土的长期强度和残余强度、地基在各种变形条件下的沉陷理论等问题中,由于作为地质介质的土,是由固、液、气三相组成的复杂体系,是历史过程的产物,更多还原

【Abstract】 This paper presents the principles of tne experimental study by the torsional plastometer with the multi-force systems (i. e. the case of axial compression under torsion and hydrostatic pressure).Stress analyses of the pure shear tests and the three-dimensional stress-state tests are made.A simple and accurate testing method is suggested for studying the effect of the intermediate principal stress level on the strength and the stress strain relationship of the soil. At the end, the extensive uses of this apparatus are given.更多还原