抛石散体振动密实过程的离散元数值模拟  

NUMERICAL SIMULATION OF VIBRATION COMPACTING PROCESS ON LOOSE MEDIA BY DISTINCT ELEMENT METHOD

作　　者：张翠兵[1] 邓志勇[1] 高凌天[2] 刘凯欣[2] 张志毅[1] 

机构地区：[1]中国铁道科学研究院铁建所,北京100081 [2]北京大学力学与工程科学系,北京100871

出　　处：《岩石力学与工程学报》2004年第1期95-100,共6页Chinese Journal of Rock Mechanics and Engineering

摘　　要：借助离散元法对爆炸挤淤形成堆石散体的振动密实过程进行了数值模拟。通过模拟散体单元相互运动、位置重排,在整体上表现出抛石堤的挤密效应,模拟结果与实际情况基本相符。利用离散元法可以清楚地得知所模拟的抛石堤在振动荷载作用下的运动及受力情况,抛石堤在各个时刻的状态也很明确。这充分说明采用动态离散元来模拟散体是可行的。The breakwater is constructed in deep silt by blasting method and the construction of it will be affected by blasting vibration. Successful numerical simulation is presented of the vibration compacting process on the breakwater made of loose media by distinct element method,and the result of numerical simulation is analyzed. The location and motion state of loose media are successfully simulated by distinct element method. The result of simulation is consistent with fact.

关 键 词：抛石堤 振动荷载 数值模拟 散体 离散单元法 振动密实 

分 类 号：TV223.1[水利工程—水工结构工程]