典型文献
Experimental study on the dynamic modulus of compacted loess under bidirectional dynamic load
文献摘要：
The dynamic characteristics of compacted loess are of great significance to the seismic construction of the Loess Plateau area in Northwest China,where earthquakes frequently occur.To study the change in the dynamic modulus of the foundation soil under the combined action of vertical and horizontal earthquakes,a hollow cy-lindrical torsion shear instrument capable of vibrating in four directions was used to perform two-way coupling of compression and torsion of Xi'an compacted loess under different dry density and deviator stress ratios.The results show that increasing the dry density can improve the initial dynamic compression modulus and initial dynamic shear modulus of compacted loess.With an increase in the deviator stress ratio,the initial dynamic compression modulus increases,to a certain extent,but the initial dynamic shear modulus decreases slightly.The dynamic modulus gradually decreases with the development of dynamic strain and tends to be stable,and the dynamic modulus that reaches the same strain increases with an increasing dry density.At the initial stage of dynamic loading,the attenuation of the dynamic shear modulus with the strain development is faster than that of the dynamic compression modulus.Compared with previous research results,it is determined that the dynamic modulus of loess under bidirectional dynamic loading is lower and the attenuation rate is faster than that under single-direction dynamic loading.The deviator stress ratio has a more obvious effect on the dynamic compression modulus.The increase in the deviator stress ratio can increase the dynamic compression modulus,to a certain extent.However,the deviator stress ratio has almost no effect on the dynamic shear modulus,and can therefore be ignored.
文献关键词：
中图分类号：
作者姓名：
Liguo Yang;Shengjun Shao;Qilong Sun;Ping Wang
作者机构：
Institute of Geotechnical Engineering,Xi'an University of Technology,Xi'an,710048,China;Department of Civil and Traffic Engineering Yellow River Conservancy Technical Institute,Kaifeng 475003,China;Shaanxi Key Laboratory of Loess Mechanics and Engineering,Xi'an University of Technology,Xi'an,710048,China
文献出处：
引用格式：
[1]Liguo Yang;Shengjun Shao;Qilong Sun;Ping Wang-.Experimental study on the dynamic modulus of compacted loess under bidirectional dynamic load)[J].地震研究进展（英文）,2022(03):58-66
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AB值：
0.397769
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