地震作用下滑坡动力响应及稳定性模拟分析
|
摘要
我国中西部是斜坡失稳破坏高密度存在区域,其中滑坡是一种常见的破坏方式,滑坡会给工程建设和人民生活造成巨大的损失,在地震作用下滑坡发生的几率明显增加。以白龙江郭家滑坡为例,在分析工程地质条件的基础上,利用FLAC3D数值分析软件建立数值计算模型,利用模型分析滑坡地震作用下的动力响应,进而分析地震动力作用下滑坡的稳定性,并与基于极限平衡法的静力分析结果进行对比分析,为滑坡的地震灾害预测提供依据,也为今后地震作用下滑坡的稳定性动力分析计算提供借鉴。
The midwest part of China is a slope unstable failure high incidence area.While the landslide is a common failure mode and can cause great losses in project construction and people's living.The probability of landslide will be obviously increased under earthquake action.Taking the Guojia landslide in Bailongjiang drainage area as an example,on the basis of engineering geological condition analysis,using the FLAC3D numerical analysis software has established a numerical model.Through the model has analyzed dynamic response and further analyzed landslide stability under earth dynamic action.On the basis of static analyzed results from limit equilibrium method carried out comparative analysis,provided basis for prediction of landslide hazard under earthquake action.The study can also provide reference for landslide stability dynamic analytical computation under earthquake action hereafter.
The midwest part of China is a slope unstable failure high incidence area.While the landslide is a common failure mode and can cause great losses in project construction and people's living.The probability of landslide will be obviously increased under earthquake action.Taking the Guojia landslide in Bailongjiang drainage area as an example,on the basis of engineering geological condition analysis,using the FLAC3D numerical analysis software has established a numerical model.Through the model has analyzed dynamic response and further analyzed landslide stability under earth dynamic action.On the basis of static analyzed results from limit equilibrium method carried out comparative analysis,provided basis for prediction of landslide hazard under earthquake action.The study can also provide reference for landslide stability dynamic analytical computation under earthquake action hereafter.
引文
[1]张鲁渝,郑颖人.简化Bishop法的扩展及其在非圆弧滑面中的应用[J].岩土力学,2004,25(06):927-929+934.
[2]Chen Changfu,Zhu Jianfeng.A three-dimensional slope stability analysis procedure based on Morgenstern-price method[J].Chinese Journal of Rock Mechanics and Engineering.2010,29(7):1473-1480.
[3]Huang C Z,Cao Y H,Sun W H.Generalized Limit Equilibrium Method for Slope Stability Analysis[J].Applied Mechanics&Materials,2012,170-173(3):557-568.
[4]吕擎峰,殷宗泽,王叔华,等.拟静力法边坡稳定分析的改进[J].岩土力学,2005(S1):35-38.
[5]王涛,韩煊,赵先宇,等.FLAC3D数值模拟方法及工程应用[M].北京:中国建筑工业出版社,2015.
[6]桂蕾,殷坤龙,翟月.基于FLAC3D模拟和强度折减法的滑坡稳定性计算[J].安全与环境工程,2011,18(06):9-14.
[7]李书兵,苏骏,毕辉.岩质边坡在地震荷载作用下的动力响应分析[J].地下空间与工程学报,2012,01:212-216.
[8]言志信,高乐,彭宁波,等.顺层岩质边坡地震动力响应研究[J].岩土力学,2012(S2):85-90.
[2]Chen Changfu,Zhu Jianfeng.A three-dimensional slope stability analysis procedure based on Morgenstern-price method[J].Chinese Journal of Rock Mechanics and Engineering.2010,29(7):1473-1480.
[3]Huang C Z,Cao Y H,Sun W H.Generalized Limit Equilibrium Method for Slope Stability Analysis[J].Applied Mechanics&Materials,2012,170-173(3):557-568.
[4]吕擎峰,殷宗泽,王叔华,等.拟静力法边坡稳定分析的改进[J].岩土力学,2005(S1):35-38.
[5]王涛,韩煊,赵先宇,等.FLAC3D数值模拟方法及工程应用[M].北京:中国建筑工业出版社,2015.
[6]桂蕾,殷坤龙,翟月.基于FLAC3D模拟和强度折减法的滑坡稳定性计算[J].安全与环境工程,2011,18(06):9-14.
[7]李书兵,苏骏,毕辉.岩质边坡在地震荷载作用下的动力响应分析[J].地下空间与工程学报,2012,01:212-216.
[8]言志信,高乐,彭宁波,等.顺层岩质边坡地震动力响应研究[J].岩土力学,2012(S2):85-90.