| 137 | 8 | 11 |
| 下载次数 | 被引频次 | 阅读次数 |
强度参数反演是获取岩土工程参数的重要手段之一。传统的位移反分析方法需要对岩土体进行位移监测,耗费较多的时间和资金。本文在极限分析上限定理的基础上进行安全系数的求解。并分析边坡的几何及参数连续性,将边坡破坏断面两侧的断面的安全系数视为1。通过做出不同断面的c—φ曲线,其曲线的交点即为反演所得的参数值。结果表明,其结果与试验值符合较好,效果较好。
Abstract：The back analysis is an important means for obtaining the strength parameters of the geotechnical mass.The tradition method,known as the displacement back analysis,need the data of the displacement monitoring,which spent much time and funds.In this paper,the safety factor is solved by the upper bound theorem the safety factor of the slope section near the failure section is considered as 1.The inversion parameter is obtained by the c-φ curve of different sections.The result shows the inversion data coincides well with the test data.
[1]王复明,李晓龙,苗丽,等.基于小波支持向量机的围岩力学参数辨识[J].水力发电学报,2010,6(3):184-190.
[2]魏连伟.基于模拟退火算法的水文地质参数识别[J].天津大学学报,2003,36(5):618-621.
[3]高玮,郑颖人.基于遗传算法的岩土本构模型辨识[J].岩石力学与工程学报,2002,21(1):9-12.
[4]DENG J H,LEE C F.Displacement back analysis for asteep slope at the three gorges project site[J].Interna-tional Journal of Rock Mechanics and Mining Sciences.2001,38(2):259-268.
[5]Hisatake M,Hieda Y.Three-dimensional back-analysismethod for the mechanical parameters of the new ground a-head of a tunnel face[J].Tunnelling and UndergroundSpace Technology.2008.23(4):373-380.
[6]SAKURAI S,AKUTAGAWA S,TAKEUCHI K.Back a-nalysis for tunnel engineering as a modern observationalmethod[J].Tunnelling and Underground Space Technolo-gy Tunnelling in Japan.1983,18(2-3):185-196.
[7]Dawson E M,Roth W H.Drescher A.Slope stability a-nalysis by strength reduction[J].Géotechnique 1999,49(6):835-840.
[8]Chen W F.Limit analysis and soil plasticity[M].Amster-dam:Elsevier,1975.
[9]Michalowski R L.Slope stability analysis:a kinematical ap-proach[J].Géotechnique,1995,45(2):283-293.
[10]赵炼恒.路基边坡稳定性加固技术能量分析方法研究[D].中南大学博士论文.2009.10.
[11]Duncan J M.Limit equilibrium and finite element analysis ofslopes[J].Journal of Geotechnical Engineering.1996,122(7):577-596.
基本信息:
中图分类号:TU43
引用信息:
[1]石耀华.利用能量法的边坡强度参数反演研究[J].公路工程,2012,37(01):203-206.
2012-02-20
2012-02-20