In-situ direct shear tests on shear strength indices of pebble and gravelly soil

被引：0

作者：

Tang, Jin-Song ^{[1
,2
]}

Liu, Song-Yu ^{[3
]}

Tong, Li-Yuan ^{[3
]}

Shen, Cai-Hua ^{[4
]}

机构：

[1] School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang

[2] Key Laboratory of Roads and Railway Engineering Safety Control of Ministry of Education (Shijiazhuang Tiedao University), Shijiazhuang

[3] School of Transportation, Southeast University, Nanjing

[4] College of Civil and Transportation Engineering, Hohai University, Nanjing

来源：

Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2015年 / 37卷

关键词：

Direct shear test; Field test; Particle size analysis; Pebble and gravelly soil; Shear strength indices;

D O I：

10.11779/CJGE2015S1032

中图分类号：

学科分类号：

摘要：

As an effective method to determine strength indices of pebble and gravelly soil, the field large-scale direct shear test on four typical samples of pebble and gravelly soil in the area of low mountains and hills Southern to the Yangtze River is conducted. At the same time, the particle size analysis test on pebble and gravelly soil is done in laboratory by sampling in the failure surface after shear failure. The test results show that there are obvious peak strength and steady residual strength at the relation curve between shear stress and shear displacement by direct shear test on well graded pebble and gravelly soil. The cohesive strength is lower and the internal friction angle is higher for pebble and gravelly soil in test site. The strength characteristics of pebble and gravelly soil are different from those of common homogeneous soil and cataclastic rock mass, which are related to many factors such as property of component materials, particle size, size grading, coarseness degree, cementation of cement and dense degree. ©, 2015, Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering. All right reserved.

引用

页码：167 / 171

页数：4

共 12 条

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