摘要
以极限分析法为基础,通过建立土质阶梯型边坡抗滑桩支护计算模型,研究了抗滑桩在不同位置加固边坡时的稳定性以及最佳加固位置,分析了桩土间横向力、附加荷载、水平地震力等对阶梯型边坡稳定性的影响。通过外部做功功率和内部能量耗散率的计算,推导出抗滑桩加固阶梯型边坡安全系数F_s的显性表达式。结合算例分析,验证了计算方法的合理性,并深入探究抗滑桩在不同位置时加固边坡安全系数的变化规律和内在机理,分析了高度参数、角度参数、台阶宽度、附加荷载系数以及地震系数对阶梯型边坡稳定性系数的影响规律。
Based on the limit analysis method, the stability of stepped slopes reinforced with piles and the optimal pile location were studied. The influence of lateral forces between piles and soil, the additional load and the horizontal earthquake force on the stability of stepped slopes was analyzed. The explicit formulation of the factor of safety was obtained by equating the external work rate to the internal energy dissipation. Through the numerical example, the validity of the proposed method was confirmed. Moreover, the variation law of the factor of safety under different pile locations was discussed in detail. The results can provide reference for the stability assessment of stepped slopes reinforced with piles in practical engineering.
作者
唐迎春
TANG Yingchun(School of Management Science and Engineering,Guangxi University of Finance and Economics,Nanning 530003,China)
出处
《人民黄河》
CAS
北大核心
2020年第6期106-111,共6页
Yellow River
基金
广西自然科学基金资助项目(2017GXNSFBA198160)
广西高校中青年教师基础能力提升项目(2018KY0519)
广西财经学院青年教师科研发展基金项目(2017QNB12)。
