• 责任者：Wang Ping (Lanzhou Institute of Seismology ; CEA ; Lanzhou 730000 ; China) ; Wang Jieming
• 刊名：Northwestern Seismological Journal
• 出版年：2011
• 卷期：33(3)
• 关键词：风化岩土 ; weathered materials ; 土动力学 ; soil dynamics
• 页码：p.291-294
• 图表：2 illus., 1 table, 5 refs.
• 分类号：1702
• 出版序号：1357
• issnNo：ISSN1000-0844
• isbnNo：CN62-1048/P

A series of studies on dynamic elasticity modulus and damping ratio of highly weathered rock which covered by loess are conducted with small strain εd, using triaxial shear equipment and their dynamics properties are analyzed. The results show that the dynamic stress and strain relation of highly weathered rock is nonlinear elastic relations, and fit the model of hyperbolic type with small strain ε_d. Within the same strain range, the mudstone’s damping ratio is greater than the red sandstone’s. In the same consolidation condition, the initial elastic modulus of red sandstone is greater than the one of mudstone. The research provides experimental technology and dynamic property parameters to dynamic response analysis and seismic deformation mechanism study for highly weathered rock which covered by thick layer of loess.