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为了探究不同掺量的木质纤维土的力学性能变化趋势,以黑龙江某基坑的粉质黏土为试验对象,通过进行直剪试验以及无侧限抗压强度试验,得到了不同掺量下木质纤维土的抗剪强度以及无侧限抗压强度变化规律。试验结果表明:掺入木质纤维对土体强度有一定的提高,随着木质纤维的掺量增长,纤维加筋土的内摩擦角以线性趋势持续增大、黏聚力以及无侧限抗压强度均为先增大后减小,最佳纤维掺量为4%。
In order to investigate the changing trend of mechanical properties of lignocellulosic soil with different dosages, silty clay in a foundation pit of Heilongjiang was used as test object. Through direct shear test and unconfined compressive strength test, Soil shear strength and unconfined compressive strength variation. The results show that the strength of soil is increased with the incorporation of wood fiber. With the increase of wood fiber content, the internal friction angle of fiber reinforced soil increases linearly with the trend of cohesion and unconfined compressive strength Strength first increased and then decreased, the best fiber content of 4%.