An Apparatus for In Situ Direct Shear Tests on Snow

被引:0
|
作者
M. Barbero
F. Barpi
M. Borri-Brunetto
O. Pallara
机构
[1] Politecnico di Torino,Department of Structural, Geotechnical and Building Engineering
来源
Experimental Techniques | 2016年 / 40卷
关键词
Snow Mechanics; Shear Test; In Situ Test; Snow Sampling; Pneumatic Apparatus;
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中图分类号
学科分类号
摘要
The article presents a prototype of a new device for measuring the shear strength of snow specimens in situ. The resistance to sliding of a snow slab on a mountain slope is a key parameter in snow mechanics. The proposed apparatus acts as a sampler, to obtain a nearly undisturbed specimen, and as a shear box, similar to those used in the laboratory, with complete control of the test procedure. The main components of the device are a pneumatic system, for the application of normal and shear forces to the specimen, a real-time controller for commanding and recording of the data, and a computer. The apparatus can be carried to the place of the experiments and operated by a team of two researchers. Calibration and preliminary tests are also described in the article.
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页码:149 / 158
页数:9
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