The application of three-dimensional DDA with a spherical rigid block to rockfall simulation
The application of three-dimensional DDA with a spherical rigid block to rockfall simulation
复制标题
DOI：
10.1016/j.ijrmms.2004.03.108
复制
发表时间：
2004-05
影响因子：
7.2
通讯作者：
Meng Yang;T. Fukawa;Y. Ohnishi;S. Nishiyama;S. Miki;Y. Hirakawa;S. Mori
中科院分区：
文献类型：
--
作者：
Meng Yang;T. Fukawa;Y. Ohnishi;S. Nishiyama;S. Miki;Y. Hirakawa;S. Mori
非连续变形分析（DDA）是1984年发展起来的一种解决岩石工程问题的有效的动力数值方法。本文提出了一种新的模拟岩石边坡落石行为的三维球刚块DDA方法。本文简要介绍了崩岩模拟的理论和机理。由于采用了球形刚性块体，简化了位移函数和接触条件的推导。最后，通过一个初步的应用实例，验证了该方法在实际问题中的适用性。该应用程序涉及模拟岩石边坡上的落石，这是位于日本希达山。与质量系统分析的计算结果相比，三维DDA与球形刚性块是有效的，在模拟落石运动的各种模式和预测的轨迹落石。
Discontinuous Deformation Analysis (DDA), developed in 1984, is an effective dynamic numerical method for solving problems in the rock engineering field. In this paper, a new approach of 3-dimensional DDA with a spherical rigid-block is proposed for the purpose of simulating the behaviour of falling rock from a rock slope. The theory and the mechanism of this research to model rockfall are briefly introduced. The proposed method simplifies the formulation of the displacement function and contact condition due to the adoption of the spherical-rigid-block. Furthermore, a preliminary application is presented to demonstrate the applicability of this new method to practical problems. The application involves the simulation of rockfall on the rock slope, which is located in Hida Mountains in Japan. In comparison with the calculation results of the mass system analysis, 3-dimensional DDA with spherical rigid block is shown to be effective in modelling various modes of rockfall movement and predicting the trajectory of the falling rocks.