隧道滑坡的抗滑桩设计计算方法研究

发布时间：2018-05-29 02:09

本文选题：抗滑桩 + 隧道　；参考：《西南交通大学》2014年硕士论文

【摘要】：在山区修建铁路、公路时往往难以避免地要穿越滑坡地带。因抗滑能力强,适用范围广,抗滑桩在滑坡治理中的应用很普遍。隧道滑坡的抗滑桩设计主要采用普通抗滑桩的设计方法,没有考虑隧道开挖对抗滑桩受力及变形的影响以及滑坡对隧道的影响,这是不合理的。本文对隧道滑坡的抗滑桩设计计算方法进行研究,主要研究内容及成果包括： 1.对国内用抗滑桩加固隧道滑坡的工程实例进行总结分析。 2.利用数值分析手段,采用单因子变量法对不同情况下抗滑桩的受力及变形分布情况进行对比分析总结,变量主要包括桩隧间距、滑体土的种类、桩顶埋深、嵌固深度以及桩身刚度。 3.对桩顶位移与隧道结构位移的相互关系进行研究,以确定合理的桩顶位移控制值。对不同桩隧间距下、不同类型抗滑桩作用下隧道结构的受力及位移进行研究,明确抗滑桩的作用机理。 4.利用数值分析手段对滑坡剩余推力的传递进行模拟计算,并与传递系数法所得滑坡剩余推力进行比较,结果表明传递系数法在计算滑坡推力方面可以满足工程实际要求 5.在传递系数法的基础上,提出了一种计算滑体位移的简化方法,可以估算滑体以及位于滑体中的建筑物的位移。 6.在上述工作的基础上,探讨隧道滑坡的抗滑桩设计计算方法。
[Abstract]:When building a railway in a mountainous area, it is often unavoidable to cross the landslide zone. Because of its strong anti-slide ability and wide application range, anti-slide pile is widely used in landslide treatment. The anti-slide pile design of tunnel landslide mainly adopts the design method of ordinary anti-slide pile. It is unreasonable to consider the influence of force and deformation of anti-slide pile in tunnel excavation and the influence of landslide on tunnel. In this paper, the design and calculation method of anti-slide pile for tunnel landslide is studied. The main research contents and results are as follows: 1. This paper summarizes and analyzes the engineering example of strengthening tunnel landslide with anti-slide pile in China. 2. By means of numerical analysis, the stress and deformation distribution of anti-slide pile under different conditions are analyzed and summarized by single factor variable method. The variables mainly include the spacing of pile and tunnel, the type of sliding soil, the depth of pile top, and so on. Embedded depth and pile stiffness. 3. The relationship between pile top displacement and tunnel structure displacement is studied in order to determine the reasonable control value of pile top displacement. The stress and displacement of tunnel structure under the action of different pile spacing and different types of anti-slide pile are studied, and the mechanism of anti-slide pile is clarified. 4. The transfer of landslide residual thrust is simulated by numerical analysis method and compared with that obtained by transfer coefficient method. The results show that the transfer coefficient method can meet the practical engineering requirements in the calculation of landslide thrust. 5. Based on the transfer coefficient method, a simplified method for calculating the displacement of the sliding body is proposed, which can estimate the displacement of the sliding body and the building located in the sliding body. 6. On the basis of above work, the design and calculation method of anti-slide pile for tunnel landslide is discussed.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U452.11;U457

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