某岩质边坡稳定性分析与桩锚支护应用研究

发布时间：2018-04-03 22:50

本文选题：边坡稳定性　切入点：内力计算　出处：《中国地质大学(北京)》2015年硕士论文

【摘要】：边坡稳定性分析是工程领域内备受关注的问题,边坡稳定性的力学作用机理、设计计算理论多种多样,于工程实践中亦有多。本文结合北京某工程实例,采用理论分析和数值模拟相结合的方法,对边坡稳定性和锚固支护的设计计算理论进行研究,研究工作如下:总结了边坡稳定性分析,抗滑桩内力、位移的理论计算体系与锚索设计的计算理论;研究边坡稳定性的内外在影响因素;对抗滑桩受力性状进行了分析,得出桩身弯矩是呈现先增大后减小的变化规律。通过实际工程实例,系统地分析了岩质边坡的稳定性,通过对边坡的地层岩性、工程地质条件、水文地质条件、边坡岩体质量、结构类型分析的基础上,对边坡岩体失稳的类型和形成的机制,边坡失稳影响的外在因素等简单的进行了探讨。通过边坡稳定性的理论计算,以及抗滑桩和锚索的设计理论计算,提出了工程治理措施。基于Midas GTS软件对北京某工程实例进行数值模拟计算,建立二维有限元模型,对项目7号边坡支护前后的应力分布变化和位移分布变化做了对比分析,并详细分析了支护结构的内力、应力的变化规律,并将数值计算结果与理论计算结果进行了对比分析。
[Abstract]:Slope stability analysis is a problem of great concern in the engineering field. The mechanics mechanism of slope stability, design and calculation theory are various, and there are also many problems in engineering practice.In this paper, the design and calculation theory of slope stability and anchor support is studied by combining theoretical analysis and numerical simulation with an engineering example in Beijing. The research work is as follows: the analysis of slope stability, the internal force of anti-slide pile, and the internal force of anti-slide pile are summarized.The theoretical calculation system of displacement and the calculation theory of anchor cable design; the internal and external influencing factors of slope stability are studied; and the mechanical behavior of anti-slide pile is analyzed. It is concluded that the bending moment of pile body is increased first and then decreased.The stability of rock slope is analyzed systematically by practical engineering examples. Based on the analysis of stratigraphic lithology, engineering geological condition, hydrogeological condition, rock mass quality and structure type of slope,The types and formation mechanism of slope rock mass instability and the external factors affecting slope instability are simply discussed.Through the theoretical calculation of slope stability and the design theory calculation of anti-slide pile and anchor cable, the engineering treatment measures are put forward.Based on the Midas GTS software, the numerical simulation of an engineering case in Beijing is carried out, and a two-dimensional finite element model is established. The stress distribution and displacement distribution before and after slope support of project No. 7 are compared and analyzed.The variation law of internal force and stress of supporting structure is analyzed in detail, and the results of numerical calculation and theoretical calculation are compared and analyzed.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU457

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