【作者】 张涛；

【导师】 门玉明；

【作者基本信息】 长安大学 ， 建筑安全工程， 2011， 硕士

【摘要】 滑坡是一种常见的地质灾害,其具有多发性及危害性等特点,经常使交通中断、河道堵塞、.厂矿推毁、村庄及农田遭受破坏,严重危害了人民的生命及财产的安全,进而制约当地经济社会的可持续发展。锚杆抗滑桩作为一种新型支挡结构物,在大中型滑坡治理工程中发挥了越来越重要的作用,但由于其理论研究远远落后于工程实践,因而限制了其在工程实践中的推广应用。本文以“滑坡与锚索抗滑桩相互作用的大型物理模型试验研究”项目为依托,重点研究锚杆抗滑桩在滑坡治理应用中的承载机理、受力变形及破坏特征等问题。主要研究内容及成果如下：(1)开展了滑坡模型基本参数室内物理模型试验、普通抗滑桩室内物理模型试验、锚杆抗滑桩室内物理模型试验,获得了大量的测试数据。(2)通过对测试数据的分析,确定了测点土压力变化规律、抗滑桩的受力分布及抗滑桩桩身内力分布规律,总结了锚杆抗滑桩与滑体的变形规律。通过三组模型试验的分析,推测出三种锚杆抗滑桩的破坏模式：桩的塑性铰破坏模式、锚杆受力滑移破坏、桩周土体塑性破坏。(3)在物理模型试验的基础上,进行了有限元数值模拟,得出了抗滑桩及锚杆的受力规律、锚杆抗滑桩上下排锚杆轴向拉力的比值关系等,并与物理模型的试验结果进行了对比分析。(4)最后,通过物理模型试验及数值模拟的对比分析,得出了锚杆抗滑桩及滑坡体的变形破坏演化规律；提出了锚杆抗滑桩的安全预警判据及安全预测预报模型；总结了锚杆抗滑桩在施工期间及运营期间的安全监测方案。更多还原

【Abstract】 Loess landslide is China’s widely developed in a loess region, multiple, harmful strong supergene geological disasters, which is characterized with the collapse of nature, often show faster sliding speed, sliding distance far; from landslide-scale point of view, loess landslide You Yi mainly small and medium sized landslide.As the important retaining structure, anchor anti-slide pile has played a very positive role in large and medium-sized landslide treatment project in recent years. However, its theoretical research lagged far behind the engineering practice leaded to sacrificing engineering investment in actual application process.This article is according to the "control techniques Micropile Landslide large physical simulation test" as the theoretical basis for further study, focusing on anchor anti-slide pile landslide applications in the carrying mechanism of deformation and failure modes of force issues.The main research achievements in this thesis are as follows:(1) Doing landslide model test respectively, which are landslide basic parameters in physical model test,the common anti-slide pile of physical model experiment,anchor pile and physical model experiment. Providing certain basis for anchor anti-pile in the application of landslide disaster engineering.(2) Through the analysis of the test data, we summarized the deformation law of anchor anti-slide pile and smooth body; earth pressure variation rules and the anti-slide pile distribution and the internal force distribution of body anti-slide piles.(3) On the basis of physical model experiment, we proceeded the finite element numerical simulation, we conclude the stress law of anchor pile and anchor pile and the ratio of the relationship of anchor axial tensile force between anchor piles; and compared with the results of physical experiment.(4) Finally, through the comparative analysis of physical model experiment and numerical simulation, we conclude the deformation damage evolution rule of the anchor pile and landslide; and propose anchor pile early warning criterion and safety prediction model. Summarize the safety monitoring scheme of the anchor pile during construction and operation更多还原