【摘要】 为研究青海湖区域公路路基长期处于季节性雨季下的竖向变形特性，以青海湖西区的典型粉土为研究对象，采用干湿循环试验及一维固结试验对粉土地基的沉降特性及主要变形指标进行研究分析。研究结果表明，在干湿循环次数较少时，土体的最终变形量、单位沉降量及压缩量随循环次数的增加而增大，循环进入10次之后，变形会逐渐趋于稳定；干湿循环作用会使粉土的压缩模量增大，固结系数增大，压缩性降低。更多还原

【Abstract】 In order to study the vertical deformation characteristics of highway roadbeds in the Qinghai Lake region under the long-term seasonal rainy season, the settlement characteristics and main deformation indexes of typical silt sampled in the western area of Qinghai Lake were studied and analyzed by using drying-wetting cycles tests and one-dimensional consolidation tests. The results of the study show that the final deformation, unit settlement and compression of the soil samples increase with the increase of the number of cycles when experiencing a small number of drying-wetting cycles, and the deformation will be gradually stabilized after the cycle reaches 10 times. The drying-wetting cycles will increase the compression modulus, increase the coefficient of consolidation and decrease the compressibility of the pulverized soil.更多还原