基于随机有限差分法的边坡可靠度勘察及抗滑桩随机响应研究  

Study on Slope Reliability and Random Response of Anti-slide Piles Based on Stochastic Finite Difference Method

作　　者：姚能旺 Yao Nengwang(Fujian Huali Survey and Design Co.Ltd.,Fuzhou,Fujian 350000)

机构地区：[1]福建省华力勘测设计有限公司,福建福州350000

出　　处：《江西建材》2022年第9期167-170,共4页Jiangxi Building Materials

摘　　要：边坡的稳定性受多种不确定性因素影响,文中基于随机有限差分法,考虑不确定因素对边坡可靠度的影响,并分析不确定性因素对抗滑桩支护效果的影响,得出以下结论:变异系数较大时,边坡滑动失稳概率增大,可靠度急剧下降。随波动范围的增大,边坡的失效概率逐渐增大。当波动范围小于10m时,边坡的失效概率增长趋势显著,随着波动范围的增大,边坡失效概率逐渐趋于平缓。变异系数与波动范围对抗滑桩响应影响显著,合理控制岩土体空间不确定性是控制边坡可靠度的有效措施。The stability of slope is often affected by many uncertain factors. The accuracy of slope reliability analysis is low without considering the effect of uncertain factors on slope stability. This paper based on the stochastic finite difference method, the variation law of slope reliability under the influence of spatial uncertainty of rock and soil mass is considered, and the influence of uncertainty factors on the effect of anti-slide pile support is analyzed, the conclusions are as follows: when the coefficient of variation is large, the probability of slope sliding instability increases, and the reliability decreases sharply. The failure probability of slope increases with the increase of wave range.The sliding volume in the vertical fluctuation range is always larger than that in the horizontal fluctuation range, which shows that the sliding volume can be reduced effectively by increasing the horizontal fluctuation range and the sliding instability of the slope can be restrained. The variation coefficient and wave range have significant influence on the response of anti-slide pile. The reasonable control of spatial uncertainty of rock and soil mass is an effective measure to control the reliability of slope.

关 键 词：边坡可靠度 随机有限差分法 抗滑桩 

分 类 号：TU43[建筑科学—岩土工程]