【作者】 张德佳；

【导师】 刘涌江；

【作者基本信息】 重庆交通大学 ， 道路与铁道工程， 2010， 硕士

【摘要】 随着国民经济的飞速发展,我国基础设施建设达到了前所未有的高峰,在岩体中开挖的边坡也越来越多,由于特殊的地质,地貌条件和日益活跃的人类工程活动,使得路基边坡稳定性问题十分突出。大量资料证实,边坡失稳破坏多发生在软弱夹层、节理、断层等结构面处,特别是含有软弱夹层的情况,边坡岩体中的软弱夹层常成为滑坡失稳的控制性因素。因此开展含有软弱夹层边坡的稳定性问题研究就显得尤为必要。本文将以典型边坡为研究对象,采用数值分析方法,利用ANSYS软件建立不同坡高、坡角、软弱夹层倾角、粘聚力、内摩擦角的数值模型,在FLAC3D中分析模型的位移图并求解安全系数。通过大量的数值模拟,研究坡高、坡角、软弱夹层倾角、粘聚力、内摩擦角等因素对边坡变形特征以及安全系数的影响规律;选取典型的数值模型施加锚索和抗滑桩,对比分析其加固效果(安全系数),并比较两种加固措施对最大不平衡力、坡体内部的位移,剪切应变增量及速度矢量的影响。在此基础上,对锚索和抗滑桩针对不同类型边坡加固效果的经济性及社会效应加以分析,从而选出适合的加固措施。本文研究获得的成果有利于进一步完善边坡的稳定性分析及加固方法,并对类似的工程提供参考与指导。更多还原

【Abstract】 With the rapid development of the national economy, China’s infrastructure construction has reached an unprecedented peak, more and more slopes are excavated in the rocks .The slope stability problem is very conspicuous because of special geological, geomorphological conditions and an increasingly human engineering activities. Large amounts of data confirmed that the instability and sliding failure of the slope occurred in the weak interlayer, joints, faults and other structural surface areas mostly, especially in the soft interlayer , the weak interlayer often become the controlling factors of landslide instability. Therefore, it’s essential to carry out the study on the stability of the slope containing the weak interlayer.This text will take the typical slope as example, adopting numerical analysis method to create the numerical models with different slope heights、slope angles、weak interlayer inclinations、cohesion、friction angle in the ANSYS software, analyzing the displacement map and solving the safety factor of the model in the FLAC3D software .Through a large number of numerical simulations to study the law which slope heights、slope angles、weak interlayer inclinations、cohesion、friction angle and other factors impact on the safety factor as well as slope deformation characteristics; applying prestressed cable and anti-slide pile on the typical model, contrasting the reinforced effects (safety factor), and comparing the two kinds of reinforcement measures on the maximum unbalanced force、slope of internal displacement、shear strain increment and velocity vector. On this basis, analyzing the social effects and economic effects of the prestressed cable and anti-slide pile specific to the different types of reinforced effects , and electing a suitable reinforcement measures.In this paper, the outcome of institute can be to further improve stability analysis and reinforcement measures of slope .as well as to provide a reference and guide for similar projects.更多还原