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采用较高水平的围压,对土工布加筋黄土进行三轴剪切试验,探究了不同围压和加筋方式下土工布加筋黄土的强度及变形特性。结果表明:在较高围压条件下,土工布加筋土体的应力-应变曲线由应变软化型转变为应变硬化型,土体强度有所提高,导致强度提高的主要原因是其黏聚力的增大;随围压的增大、加筋层数的增多,土体强度不断增大;较低围压条件下加筋效果不明显,围压越大,筋材对土体的加固效果越难得到充分发挥。因此,在适当的围压范围内可以使用加筋方法来加固土体。
Using the higher confining pressure, the geosynthetic reinforced loess was subjected to triaxial shear tests, and the strength and deformation characteristics of geotextile-reinforced loess under different confining pressure and reinforcement mode were explored. The results show that under the condition of high confining pressure, the stress-strain curve of geotextile-reinforced soil changes from strain softening to strain hardening, and the strength of soil increases. The main reason for the increase in strength is the cohesion With the increase of confining pressure, the number of reinforced layers increases, and the strength of soil increases continuously; the reinforcement effect is not obvious under low confining pressure conditions, and the larger the confining pressure is, the reinforcement effect of reinforcement materials on soil The harder it is to get it. Therefore, reinforcement can be used to reinforce the soil within the confining pressure range.