掺入轮胎条的黄土混合物剪切形变特性研究

为提高黄土填料的剪切强度和降低其重度，研究轮胎条掺量、尺寸对混合土剪切形变影响。通过对轮胎条加筋土进行大型剪切试验，研究竖向荷载、轮胎条含量（0%~100%）和轮胎条长宽比（1∶1~1∶8）对混合土体积应变特性的影响。结果表明:提高轮胎条含量，极大地改变了黄土颗粒的空间分布状况，轮胎条在混合土中占据主导地位；试样竖向位移与轮胎条掺量、长宽比、竖向荷载成正相关；将抗剪强度峰值点控制在较低的轴向应变范围内，可以调整黄土轮胎条混合土的变形特征。

Study on the Shear Volume Strain Characteristics of Loess Mixture with Tire Strips

In order to improve the shear strength and reduce the unit weight of loess fill materials, the influence of tire strip content and size on shear volume strain of mixed soil was studied. Large-scale direct shear test of tire strip reinforced soil was conducted to study the influence of vertical loads, tire strip content (0%~100%) and length-width ratio (1:1~1:8) on the volume strain characteristics of mixed soil. The results show that the spatial distribution of loess particles is greatly changed by increasing the content of tire strips and the tire strips play a main role on the mixed soils. The vertical displacement of the sample is positively correlated with tire strip, content, length-width ratio and vertical load. The deformation characteristics of mixed soil of loess mixture with tire strips can be adjusted by controlling the peak point of shear strength in a lower axial strain range.