土样剪切波速超声测试装置与方法研究  

Study on ultrasonic shear wave velocity measuring instrument and method used for soil specimen

作　　者：郑志华[1] 王德润[1] 张志毅[1] 

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080

出　　处：《世界地震工程》2002年第3期42-47,共6页World Earthquake Engineering

基　　金：黑龙江省自然科学基金资助项目(E00-23)

摘　　要：本文介绍了自行设计的土样剪切波速超声测试装置与测试方法,与扭剪三轴仪相结合,测试了多组干砂试样的剪切波速。检验了量测系统的可靠性。探讨了试件的边界条件及震相识别等问题。试验测得的干砂在不同固结压力下的剪切波速,与Hardin公式吻合良好,表明所研制的测试装置及测试方法是可行的。A new type of ultrasonic instrument used for shear wave velocity measuring of soil specimen is introduced here. The measuring method is also presented in detail. Tens of dry sand specimens are measured by this instrument combining with triaxial torsional shear facility. The reliability of this system is checked. Problems such as boundary conditions, arriving time identification are also discussed. The measuring results of dry sand specimens have a good agreement with that from Hardin Equation.

关 键 词：剪切波速 超声 换能器 震相识别 土动力学 弹性模量 

分 类 号：TU415[建筑科学—岩土工程]