Prediction of Wave Attenuation across Multiple Joints with an Improved Elastic Nonlinear Model
(0) The study on nonlinear displacement discontinuity model has been investigated in the researches of normal incident wave attenuation across rock joints.But the studies were limited only on the effects of joint with single type deformation behavior, without considering the influence of different extent in model nonlinearity.The improved elastic nonlinear normal deformational model can descript the extent of nonlinearity quantitatively.Based on this model, a displacement discontinuity model for normally incident wave propagation across multiple parallel joints was established in an elastic half-space.Using one-dimensional wave equation characteristics method, the time-domain numerical difference scheme of transmitted particle velocity was proposed, making computational programs to obtain semi-numerical solutions, and transmission coefficients.Parameter studies were conducted to get an insight into the effects of number of joints and the extent of nonlinearity, the incident wave maximum amplitude on transmission coefficients and transmission energy rate, waveform distortion and delay time.
multiple parallel joints wave attenuation improved nonlinear normal behavior
Boxue Song Jin Yu Yanyan Cai Xu Chen
institute of Geotechnic al Engineering,Huaqiao University,Xiamen,361021,China institute of Geotechnic al Engineering,Huaqiao University,Xiamen,361021,China;State Key Laboratory f
国际会议
上海
英文
553-559
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）