Practical studies on rockfall simulation by DDA

作     者：Hiroyuki Matsuyama Satoshi Nishiyama Yuzo Ohnishi 

作者机构：West Nippon Expressway Co.Ltd. School of Civil EngineeringKyoto University Kyoto University 

出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)

年 卷 期：2011年第3卷第1期

页      面：57-63页

学科分类：08[工学] 0837[工学-安全科学与工程] 

主　　题：discontinuous deformation analysis (DDA) rockfall numerical simulations field experiment cut slope highway 

摘      要：In this paper,simulations of real rockfall by discontinuous deformation analysis (DDA) are *** the simulations,the energy losses of rockfall are categorized into three types,*** loss by friction,the loss by collision,and the loss by *** of the energy loss using absolute parameters is conducted by the DDA ***,in order to verify the applicability and validity of the proposed DDA,field tests on rockfall and corresponding simulations of rockfall tests by DDA are *** simulated results of rockfall velocity and rockfall jumping height agree well with those obtained from the field ***,the new technique properly considers the energy-absorption ability of slope based on vegetation condition and shape of the rockfall,and provides a new method for the assessment and preventive design of rockfall.