本研究所用的三轴试件为圆柱体,尺寸为φ15×45cm,轴向和环向均为压缩应力。做了4组三轴徐变试验,分别在3d、7d、28d和120d龄期加荷。为了比较,还做了相应龄期的单轴徐变试验。通过试验,获得了三轴徐变的变化规律,找出了三轴徐变与单轴徐变的关系,因此,在没有多轴徐变试验资料的情况下,可以通过单轴徐变来估算多轴徐变。 The triaxial test specimen used in this study is a cylinder with a size of φ15×45 cm, and both axial and circumferential directions are compressive stress. Four sets of triaxial creep tests were performed and loaded at the 3d, 7d, 28d, and 120d ages. For comparison, a corresponding uniaxial creep test was also performed. Through experiments, the variation of triaxial creep was obtained and the relationship between triaxial creep and uniaxial creep was found. Therefore, in the absence of multiaxial creep test data, it can be estimated by uniaxial creep. Multiaxial creep.