A tilt table device for testing geosynthetic interfaces in centrifuge

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• 作者：W. Wu ; H. Wick ; F. Ferstl ; F. Aschauer
• 关键词：Geosynthetic interface ; Tilt table test ; Geotechnical centrifuge
• 刊名：Geotextiles and Geomembranes
• 出版年：2008
• 期刊代码：26_02661144
• 类别：civ
• 出版时间：February 2008
• 卷：26
• 期：1
• 页码：31-38
• 文件大小：415 K

摘要

The shear strength of geosynthetic interface can be determined by either tilt table tests under low pressure or direct shear tests under high pressure. In the present paper, a tilt table device for testing the interface shear strength in geotechnical centrifuge is presented for the first time. By combining the advantages of tilt table and centrifuge, our tests cover a wide range of pressure from 10 to 100 kPa. After a detailed description of the tilt table device, the test process and evaluation procedure are presented. The softening behaviour in the post peak regime is investigated by controlling the displacement with a relaxation mechanism. The test results in centrifuge are discussed and compared with tilt table tests and large direct shear tests in 1-g environment.