Sarma法中非饱和计算功能的实现探讨及应用评价
|
摘要
在考虑非饱和基质吸力条件下,基于Bishop单值有效应力非饱和土强度理论和Fredlund双应力变量非饱和土强度理论,探讨在传统的Sarma法中实现非饱和边坡的稳定性分析的思路和方法,开发了可考虑基质吸力的Sarma条分法的相关程序,并针对一个非饱和土滑坡进行稳定性分析,结果表明:两种改进的Sarma法在分析非饱和土边坡时基质吸力影响的考虑方式不同,这种差异会对计算结果产生一定影响,但误差是有限的。
With an aim at the study on the Sarma's slice method of unsaturated slope stability, the different treatments of matric suction in the Sarma's slice method are analyzed based on the Bishop's unsaturated strength theory and Fredlund's unsaturated strength theory respectively; then, the corresponding program codes of the Sarma's slice method which can consider matric suction differently are developed individually; and then, the application of these two developed methods on the stability analyses of an unsaturated soil slope are also discussed. Finally, the computational results show that there are some differents in considering the impacts of the matrix suction on anysis of the unsaturated soil slope using these two improved Sarma methods, but the error is limited.
With an aim at the study on the Sarma's slice method of unsaturated slope stability, the different treatments of matric suction in the Sarma's slice method are analyzed based on the Bishop's unsaturated strength theory and Fredlund's unsaturated strength theory respectively; then, the corresponding program codes of the Sarma's slice method which can consider matric suction differently are developed individually; and then, the application of these two developed methods on the stability analyses of an unsaturated soil slope are also discussed. Finally, the computational results show that there are some differents in considering the impacts of the matrix suction on anysis of the unsaturated soil slope using these two improved Sarma methods, but the error is limited.
引文
[1]郭璇,赵成刚,于威威.非饱和土边坡稳定的安全分析及进展[J].中国安全科学学报,2005,15(1):14-18.
[2]RongJian Li,Wen Zheng,Duan Hao.Discussion on the Implementing Approach of Unsaturated Matric Suction in the Slice Methods.The International Conference on Civil Engineering and Energy Engineering(CEEE 2011),Hohhot,China.
[3]李荣建,郑文,邵生俊,常体鹏.非饱和土边坡稳定分析中强度折减法与条分法的比较[J].西北农林科技大学报(自然科学版),2010,8(9):207-214.
[4]李荣建,刘军定,闫蕊,郑文,等.在边坡局部失稳中传递系数法与强度折减法的计算比较[J].西安理工大学学报,2013,29(3):260-265.
[5]李荣建,于玉贞,李广信.强度折减有限元法在非饱和土边坡稳定分析中的应用[J].水利水电技术,2006,37(3):42-45.
[6]李荣建,于玉贞,邓丽军,等.非饱和土边坡稳定分析方法探讨[J].岩土力学,2007,28(10):2060-2064.
[7]李荣建,郑文,邵生俊,刘凯.云阳龙洞抗滑桩加固边坡局部失稳机制研究[J].岩土力学,2010,31(s2):322-326.
[8]李荣建,郑文,王莉平,邵生俊.非饱和土边坡稳定性分析方法研究进展[J].西北地震学报,2011,33(s2):322-326.
[2]RongJian Li,Wen Zheng,Duan Hao.Discussion on the Implementing Approach of Unsaturated Matric Suction in the Slice Methods.The International Conference on Civil Engineering and Energy Engineering(CEEE 2011),Hohhot,China.
[3]李荣建,郑文,邵生俊,常体鹏.非饱和土边坡稳定分析中强度折减法与条分法的比较[J].西北农林科技大学报(自然科学版),2010,8(9):207-214.
[4]李荣建,刘军定,闫蕊,郑文,等.在边坡局部失稳中传递系数法与强度折减法的计算比较[J].西安理工大学学报,2013,29(3):260-265.
[5]李荣建,于玉贞,李广信.强度折减有限元法在非饱和土边坡稳定分析中的应用[J].水利水电技术,2006,37(3):42-45.
[6]李荣建,于玉贞,邓丽军,等.非饱和土边坡稳定分析方法探讨[J].岩土力学,2007,28(10):2060-2064.
[7]李荣建,郑文,邵生俊,刘凯.云阳龙洞抗滑桩加固边坡局部失稳机制研究[J].岩土力学,2010,31(s2):322-326.
[8]李荣建,郑文,王莉平,邵生俊.非饱和土边坡稳定性分析方法研究进展[J].西北地震学报,2011,33(s2):322-326.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心