【作者】 徐艳华；

【导师】 林育梁；

【作者基本信息】 广西大学 ， 岩土工程， 2005， 硕士

【副题名】南友高速公路宁明段膨胀土边坡稳定性研究（Ⅰ）

【摘要】 本文是长沙理工大学委托我们做的交通部科研项目“膨胀土地区公路修筑成套技术研究”中的子项目“膨胀土边坡稳定性分析牵引式滑动时空效应计算模型研究”的一部分研究内容。在对南友高速公路宁明段边坡进行勘查测试的基础上,我们发现而且分析了该段膨胀土边坡破坏的特点,针对南友高速公路宁明段边坡破坏的实际情况建立了相应的地质模型和计算模型,并决定将非连续变形分析方法应用于南友高速公路宁明段膨胀土边坡稳定性分析计算中。 其次,阐述了非连续变形分析方法的理论体系,推导了具体的数学模型,并结合具体的实际工程情况,对非连续变形分析方法进行了推广和发展。对边界约束、法向和切向联系及动静法进行了简化。 最后,基于改进的模型,开发了具有Windows风格的可视化非连续变形分析的程序。该程序利用Microsoft Office Access 2003建立数据库,直接进行前处理,包括读取块体的几何信息和物理信息;可以进行各个块体的变形和位移迭代计算;可以给出变形后各个块体的图形。利用该程序对该膨胀土边坡进行计算,取得了与实际情况相吻合的结论,可以反映膨胀土边坡牵引式滑动及时空效应的特点,该程序使得膨胀土边坡变形和破坏问题的研究变得简便、直观、高效。更多还原

【Abstract】 This paper is a part of the scientific research project of the Ministry of Communications"The research of the expensive soil slope stability calculatingmodel about towed space-time effect"---a sub project of "A complete set oftechnical research to construct highway in expansive soil areas " which is entrusted by Changsha University of Science and Technology. Based on the exploring of Nanyou Highway of the Ningming parts, we analyze the character of the expansive soil slope. Aimed at the actual slope damaging at Nanyou Highway of the Ningming parts, we erect corresponding geological model and mathematical model separately. Because of it’ s damaging character not liking formerly engineering examples, we try to apply the discontinuous deformation analysis (DDA) method to the slope stability of expansive soil calculating.Then, theory system of the discontinuous deformation analysis method is explained and material math model is deduced particularly. And aimed at the actual engineering, I expend and develop the theory model of the discontinuous deformation analysis, and simplify the border bind, the vertical and horizontal relations, the method of dynamic and static.At last, on the basis of improved model, DDA software on the style of Windows has been compiled. The software uses Microsoft Office Access 2003 to build the data base, it can carry on the preceding treatment, including reading the blocks’geometrical and physical intonnal ion , il can process alternate of displacement and detormat ion on each block, it can also draw the deform figures of them. Using the software to calculate the expansive soil slope, it gets the simular results which are basically according to the reality and it also reflects the slope’ s towed space time effects. Meanwhile (he software can make it easily, efficiently when solving the problem of the expensive soil slope deformation and damagement.更多还原