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一、前言在解决实际工程问题时,例如确定上坡稳定、地基承载力、建筑物沉降和挡土墙土压力等,一般都用不扰动土样在某种室内试验中测定的强度或压缩性指标来进行计算。因此,必须判断,室内试验测定的指标可以在何种程度上代表天然土层的性状。在土力学发展的早期,直到本世纪30年代以前,室内土工试验大多是用重塑土样进行的。1932年,Casagrande发现天然粘土具有复杂的颗粒结构,这种结构在重塑时
I. INTRODUCTION In solving practical engineering problems, such as determining stability of uphill slopes, bearing capacity of foundations, settlement of buildings and earth pressure of retaining walls, etc., the strength or compressibility measured in certain laboratory tests without disturbing soil samples is generally used. Indicators to calculate. Therefore, it must be judged to what extent the indexes measured in laboratory tests can represent the characteristics of natural soil layers. In the early days of the development of soil mechanics, until the 1930s, most of the indoor geotechnical tests were conducted using remolded soil samples. In 1932, Casagrande discovered that natural clay has a complex granular structure that is remodeled