地震作用下重力坝深层抗滑稳定体系可靠度分析
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摘要
基于拟静力法和等安全系数法,分析了地震作用下重力坝的双斜面深层抗滑稳定。由于深层抗滑稳定的功能函数非线性程度较高,为避免JC法存在的收敛性问题,采用改进的Monte Carlo法和等效线性化分析重力坝深层抗滑稳定的体系可靠度,结果与安全系数法一致,表明应用可靠度理论进行重力坝深层抗滑稳定分析是可行并有效的。
Wedge stability against deep siliding of gravity dams subjected to earthquake is discussed based on the pseudo-static mehod and the equal safety coefficient method.Because of high nonlinear degree of performance function,the improved Monte Carlo and equivalent linearization method are used to analyze the system reliability of anti-sliding stability at deep foundation of gravity dams to avoid convergence problem in first order second moment method.The results show the agreement of the reliability theory and safety factor method,which proves the feasibility of the reliability theory's application in the anaysis of anti-sliding stability at deep foundation of gravity dams.
Wedge stability against deep siliding of gravity dams subjected to earthquake is discussed based on the pseudo-static mehod and the equal safety coefficient method.Because of high nonlinear degree of performance function,the improved Monte Carlo and equivalent linearization method are used to analyze the system reliability of anti-sliding stability at deep foundation of gravity dams to avoid convergence problem in first order second moment method.The results show the agreement of the reliability theory and safety factor method,which proves the feasibility of the reliability theory's application in the anaysis of anti-sliding stability at deep foundation of gravity dams.
引文
[1]潘军校,周泽,陈养源.重力坝深层抗滑稳定的可靠度分析[J].水力发电学报,2007,26(5):64-67.
[2]陈祖煜,陈立宏.对重力坝设计规范中双斜面抗滑稳定分析公式的讨论意见[J].水力发电学报,2002(2):101-108.
[3]曹去修,柏宝忠,王贵明.重力坝深层抗滑稳定极限状态设计式探讨[J].人民长江,2003,34(7):40-42.
[4]范书立,陈健云,范武强,等.地震作用下碾压混凝土重力坝的可靠度分析[J].岩石力学与工程学报,2008,27(3):565-571.
[5]刘国明.古田溪一级重力坝悬臂梁振型分解反应谱法抗震计算[J].水力发电学报,2004,23(1):31-35,51.
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[7]DL 5108-1999混凝土重力坝设计规范[S].
[8]潘家铮.重力坝设计[M].北京:水利电力出版社,1987.
[9]DL 5073-2000水工建筑物抗震设计规范[S].
[10]金畅.蒙特卡洛方法中随机数发生器和随机抽样方法的研究[D].大连:大连理工大学,2005.
[11]周伟,常晓林,徐建强.基于分项系数法的重力坝深层抗滑稳定分析[J].岩土力学,2007,28(2):315-320.
[12]杜永峰,余钰,李慧.重力式挡土墙稳定性的结构体系可靠度分析[J].岩土工程学报,2008,20(3):349-353.
[13]吴震宇,陈建康,许唯临,等.岩质边坡稳定的体系可靠度分析及工程应用[J].四川大学学报:工程科学版,2008,40(2):32-37.
[2]陈祖煜,陈立宏.对重力坝设计规范中双斜面抗滑稳定分析公式的讨论意见[J].水力发电学报,2002(2):101-108.
[3]曹去修,柏宝忠,王贵明.重力坝深层抗滑稳定极限状态设计式探讨[J].人民长江,2003,34(7):40-42.
[4]范书立,陈健云,范武强,等.地震作用下碾压混凝土重力坝的可靠度分析[J].岩石力学与工程学报,2008,27(3):565-571.
[5]刘国明.古田溪一级重力坝悬臂梁振型分解反应谱法抗震计算[J].水力发电学报,2004,23(1):31-35,51.
[6]王东,陈建康.重力坝可靠度参数敏感性探讨[J].四川大学学报:工程科学版,2001,33(4):1-5.
[7]DL 5108-1999混凝土重力坝设计规范[S].
[8]潘家铮.重力坝设计[M].北京:水利电力出版社,1987.
[9]DL 5073-2000水工建筑物抗震设计规范[S].
[10]金畅.蒙特卡洛方法中随机数发生器和随机抽样方法的研究[D].大连:大连理工大学,2005.
[11]周伟,常晓林,徐建强.基于分项系数法的重力坝深层抗滑稳定分析[J].岩土力学,2007,28(2):315-320.
[12]杜永峰,余钰,李慧.重力式挡土墙稳定性的结构体系可靠度分析[J].岩土工程学报,2008,20(3):349-353.
[13]吴震宇,陈建康,许唯临,等.岩质边坡稳定的体系可靠度分析及工程应用[J].四川大学学报:工程科学版,2008,40(2):32-37.
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