木质纤维加筋土体力学性能试验研究  

Experimental study on mechanical properties of wood fiber reinforced soil

作　　者：刘思奇[1] 孙皓[1] 冯文泉 韩春鹏[1] 何钰龙[1] 

机构地区：[1]东北林业大学土木工程学院,黑龙江哈尔滨150040

出　　处：《工程建设》2015年第6期17-20,共4页Engineering Construction

基　　金：国家大学生创新训练计划项目(201410225040);中央高校基本科研业务费(2572014CB21)

摘　　要：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 explore the variation trend of mechanical properties of different amount of wood fiber soil, the silty clay of a foundation pit in Heilongjiang province was taken as the test object. Through the direct shear test and unconfined compressive strength test, the shear strength and unconfined compressive strength variation rules of soil added with different amount of wood fiber were obtained. The experimental results show that, the strength of the soil increases with the increase of the added wood fiber, the internal friction angle of the fiber reinforced soil also increases consistently in linear trend, the cohesive force and unconfined compressive strength first increase then decrease,and the optimal content of the fiber is 4%.

关 键 词：木质纤维土 抗剪强度 无侧限抗压强度 

分 类 号：TU43[建筑科学—岩土工程]