Application of the discontinuous deformation analysis method to stress wave propagation through a one-dimensional rock mass
Application of the discontinuous deformation analysis method to stress wave propagation through a one-dimensional rock mass
复制标题
不连续变形分析方法在一维岩体中应力波传播中的应用
DOI：
10.1016/j.ijrmms.2015.09.017
复制
发表时间：
2015-12
影响因子：
7.2
通讯作者：
Chen, Jian
中科院分区：
文献类型：
--
作者：
Fu, Xiaodong;Sheng, Qian;Zhang, Yonghui;Chen, Jian
应力波在岩体中的传播分析是岩石工程中的一个重要问题，非连续变形分析(DDA)方法为解决这一问题提供了有效的工具。本文从块体系统的运动方程出发，结合Newmark积分法，采用了粘性边界改进的DDA方法和力输入法，并对DDA方法处理波传播问题的能力进行了扩展。首先，给出了粘性阻尼法和数值阻尼法的阻尼比计算方法，有效地模拟了应力波传播过程中的能量耗散，为DDA法的阻尼率控制提供了一种定量的方法。其次，在一维DDA模型的基础上，进一步研究了考虑均质岩石和节理岩体的应力波传播子块的尺寸选择问题，并与理论解进行了比较，得到了P波和S波入射时的块体单元比建议值。最后，验证了DDA方法对节理无拉力特性和滑移特性的模拟能力，并研究了节理对波传播的影响。
The analysis of stress wave propagation through a rock mass is an important issue in rock engineering, and the discontinuous deformation analysis (DDA) method provides an effective tool to solve this problem. In this paper, based on the motion equations of block system with the Newmark integration method, the DDA method improved by the viscous boundary and the force input method is employed, and some investigations are made to extend the capability of the DDA method to address the wave propagation problem. First, for providing a quantitative method to control the damping of the DDA method, the computing methods of the damping ratio for both viscous damping and numerical damping are presented, which can effectively simulate the energy dissipation of stress wave propagation. Second, based on the one-dimensional DDA model, a further study on the size choice of a sub block for stress wave propagation is developed, which considers the homogeneous rock and the joint rock mass, and suggested values of block element ratio for both P-wave incidence and S-wave incidence are obtained by comparing with the theoretical solutions. Last, abilities of the DDA method to simulate both the no tension and slipping characteristics of a joint are validated, and the effects of the joint on wave propagation are also investigated.
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影响因子：
7.4
作者：
S. Sharma;W. Judd
通讯作者：
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影响因子：
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作者：
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通讯作者：
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DOI：
10.1061/(asce)0733-9399(2004)130:3(249
发表时间：
2004-03
期刊：
Journal of Engineering Mechanics-asce
影响因子：
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作者：
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通讯作者：
David Doolin;N. Sitar
影响因子：
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作者：
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通讯作者：
Sami Kaidi;Abdellatif Ouahsine;P. Sergent;M. Rouainia
DOI：
10.1080/17486020600834613
发表时间：
2006-08
期刊：
Geomechanics and Geoengineering
影响因子：
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作者：
J. Zhao;J. Cai;X. B. Zhao;H. B. Li
通讯作者：
J. Zhao;J. Cai;X. B. Zhao;H. B. Li