高陡边坡防护措施的数值模拟

发布时间：2018-03-31 13:10

本文选题：稳定性　切入点：重力式挡土墙　出处：《内蒙古工业大学》2013年硕士论文

【摘要】：伴随着科学技术的进步和经济的发展,我国对支挡结构的研究和开发利用也取得了较大的突破,支挡结构的类型不仅包含传统的结构形式如重力式挡土墙,许多新型的组合支护形式也不断应用在工程实际中,应对传统支挡结构和新型组合式支挡结构的设计及安全性进行研究。本文结合高陡边坡支挡工程的实例,对不同结构形式的挡土墙进行稳定性验算。当悬臂式挡土墙不能满足稳定性要求时,可以采用增加锚杆的组合支护方式增加挡土墙的稳定性。通过FLAC5.0软件对挡土墙的几种不同工况建立数值模型后,进行了数值模拟,对比挡土墙的水平位移和竖向位移以及土体的剪应变,结果显示,在相同条件下重力式竖直墙背挡土墙的墙背在倾斜一定的角度后,重力式挡土墙的抗滑移和抗倾覆的稳定性得到了一定的增强。通过对悬臂式挡土墙和组合式支护结构的数值模拟结果进行比较,结果表明,增加了锚杆后的悬臂式挡土墙,锚杆和悬臂式挡土墙协同工作,挡土墙的抗滑移以及抗倾覆稳定性都得到了增强,满足了稳定性设计要求并且使结构进一步的轻型化。锚杆在挡土墙墙壁上的位置和数量也会对挡土墙的稳定性产生影响,设置双排锚杆的挡土墙要比单排锚杆的挡土墙更加稳定,锚杆的位置在挡土墙的上部比在下部稳定。
[Abstract]:Along with the progress of science and technology and the development of economy , our country has made great breakthrough to the research and utilization of the supporting structure , and the type of the support structure not only contains the traditional structure form such as gravity retaining wall , but many new combination support forms are also continuously applied to the engineering practice , so as to study the design and safety of the traditional supporting structure and the novel combined support structure .

In this paper , the stability of retaining wall in different structures is calculated by combining the example of high steep slope support project . When the cantilever retaining wall is unable to meet the stability requirements , the stability of retaining wall can be increased by means of combination support of anchor rod . The results show that the anti - slip and anti - overturning stability of the retaining wall have been enhanced . The position and quantity of the retaining wall are more stable than the retaining wall of single row anchor rod . The position of the anchor rod is stable than the retaining wall at the upper part of the retaining wall .

【学位授予单位】：内蒙古工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU476

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