|Table of Contents|

Stability analysis of rock slope based on improved Sarma method(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2013年01期
Page:
15-19
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Stability analysis of rock slope based on improved Sarma method
Author(s):
ZHOU Zhi-jun1;  NIU Yong1;  ZHANG Tie-zhu2
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Yunnan Highway Development and Investment Co., Ltd., Kunming 650200, Yunnan, China
Keywords:
subgrade engineering;  rock slope;  safety stability factor;  critical acceleration coefficient;  Sarma method;  mechanical model
PACS:
U416.14
DOI:
-
Abstract:
The glide of simple heterogeneous rock slope was taken as research object, a mechanical model based on Sarma method was built. According to the static equilibrium condition of rock slope block, the relationship between critical acceleration coefficient and lateral normal pressure was got. The formula of critical acceleration coefficient was deduced, and the safety stability factor of slope under the condition of seismic intensity was got. The function relationship between safety stability factor and critical acceleration coefficient was analyzed, and the traditional Sarma method was improved by using the function relationship. Calculation result shows that the function relationship between safety stability factor and critical acceleration coefficient is monotone decreasing. Compared with the traditional Sarma method, the improved Sarma method does not need iteration, and does not exist convergence problem. The calculation number of example is only 6, and the calculation result meets requirement. 1 tab, 3 figs, 12 refs.

References:

[1] SARMA S K. Stability analysis of embankments and slopes[J]. Geotechnique, 1973, 23(3): 423-433.
[2] SARMA S K. Critical acceleration vs. static factor of safety in stability analysis of earth dams and embankments[J]. Geotechnique, 1974, 24(4): 661-665.
[3] MORGENSTERN N R, PRICE V E. The analysis of stability of general slip surface[J]. Geotechnique, 1965, 15(1): 79-93.
[4] WONG F S. Slope reliability and response surface method[J]. Journal of Geotechnical Engineering, 1985, 111(1): 32-53.
[5] 朱大勇,范鹏贤,郭志昆.关于Sarma法改进算法的补充[J].岩土力学与工程学报,2006,25(11):2343-2345. ZHU Da-yong, FAN Peng-xian, GUO Zhi-kun. Complemen-tarities to modified computation procedure of Sarma method[J]. Chinese Journal of Rock Mechanics and Engineering, 2006,25(11): 2343-2345.(in Chinese)
[6] 王 旭,李显忠.结合Morgenstern-Price法与Sarma法计算岩质-土质混合边坡稳定性[J].工程质量,2010,28(8):72-75,78. WANG Xu, LI Xian-zhong. The stability calculation of the soil-rock combined with Morgenstern-Price method and Sarma method[J]. Quality of Civil Engineering and Construction, 2010, 28(8): 72-75, 78.(in Chinese)
[7] 康海贵,李 炜.基于安全系数解析式的边坡稳定评价体系研究[J].中国公路学报,2008,21(3):1-5. KANG Hai-gui, LI Wei. Research on evaluated system for slope reliability based on calculation formulae of safety factor[J]. China Journal of Highway and Transport, 2008, 21(3): 1-5.(in Chinese)
[8] 梧 松,郑荣跃.改进局部安全系数法在土坡稳定性分析中的应用[J].岩土力学,2004,25(11):1766-1769. WU Song, ZHENG Rong-yue. Application of variable factor of safety method to slope stability analysis[J]. Rock and Soil Mechanics, 2004, 25(11): 1766-1769.(in Chinese)
[9] CHEN W F. Limit Analysis and Soil Plasticity[M]. New York: Elsevier Scientific Publishing Co., 1975.
[10] 姚爱军,苏永华.复杂岩质边坡锚固工程地震敏感性分析[J].土木工程学报,2003,36(11):34-38. YAO Ai-jun, SU Yong-hua. A method for stability of slope engineering with complicated rock-mass[J]. China Civil Engin-eering Journal, 2003, 36(11): 34-38.(in Chinese)
[11] 苏永华,赵明华,邹志鹏,等.边坡稳定性分析的Sarma模式及可靠度计算方法[J].水利学报,2006,37(4):457-463. SU Yong-hua, ZHAO Ming-hua, ZOU Zhi-peng, et al. Sarma model for slope stability analysis and its reliability degree calculation method[J]. Journal of Hydraulic Engineering, 2006, 37(4): 457-463.(in Chinese)
[12] 汪时奇.一类提高插值算法精度的数据变换法[J].上海机械学院学报,1986,8(2):63-68. WANG Shi-qi. A kind of data-transformation methods increasing the accuracy of interpolations[J]. Journal of Shanghai Institute of Mechanical Engineering, 1986, 8(2): 63-68.(in Chinese)

Memo

Memo:
-
Last Update: 2013-03-30