用室内三轴试验方法研究了原状和重塑草根加筋土的强度特性,分析含根量对土体强度的影响,并对二者强度的差异进行量化描述。试验结果表明:对于原状草根加筋土,含根量的增加对内摩擦角基本无影响,但可提高土体黏聚力,并且黏聚力先增加再基本保持不变;对于重塑草根加筋土,存在最优含根量使其强度最高,并且该值与围压相关,随围压的增大,该值增加;重塑草根加筋土的含根量是原状土的4~6倍时,二者土体破坏时的主应力差值基本相等。 The indoor three-axis test method was used to study the strength characteristics of intact and reshaped grassroots reinforced soils. The effect of rooting content on soil strength was analyzed and the difference between the two was quantitatively described. The results showed that the increase of root content had no effect on the internal friction angle, but it could increase the cohesion of the soil, and the cohesion first increased and then remained basically unchanged; for the remodeled grassroots plus There is an optimal content of root to make it have the highest strength, and the value is related to the confining pressure. With the increase of confining pressure, the value increases. The content of root of rehabilitated grassroots reinforced soil is 4 ~ 6 Times, the difference between the main stress of soil failure is basically the same.