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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 大连理工大学水利系主任、海岸和近海工程国家重点实验室副主任、辽宁省工程防灾减灾重点实验室副主任
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：水利工程系
学科：水工结构工程. 防灾减灾工程及防护工程. 岩土工程
联系方式：zoudegao@dlut.edu.cn
电子邮箱：zoudegao@dlut.edu.cn
A torsional vibration device for shear wave velocity measurement of coarse grained soils
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论文类型：期刊论文
发表时间：2019-12-01
发表刊物：MEASUREMENT
收录刊物：SCIE
卷号：148
ISSN号：0263-2241
关键字：Shear wave velocity; Testing device; PMMA; Fujian sand; Gravel
摘要：A torsional vibration testing device was designed, fabricated and installed to measure the shear wave velocity of coarse grained soils in a large-scale triaxial testing apparatus. The reliability verification was carried out on a pair of polymethyl methacrylate (PMMA) specimens. The test results demonstrate that the designed testing system can produce torsional vibration and measure the shear wave velocity with high accuracy. In a different set of tests, the small strain modulus was measured for a type of clean sand (Fujian sand) and gravel at different effective confining pressures. The measured small strain modulus of the Fujian sand are in good agreement with existing studies. The measured small strain modulus of well-graded gravel is more sensitive to the variation of effective confining pressure. The results demonstrate that the testing device can be effectively use for shear wave measurement in coarse grained soils. (C) 2019 Elsevier Ltd. All rights reserved.