微型桩在高速铁路滑坡治理中的设计和应用

Design and Application of Micropiles on Treatment for Landslide of High-speed Railway

研究目的:微型桩在基础置换、建筑物加固、挡土加固等方面得到了一定的应用,但是微型桩的设计和计算理论研究严重滞后,其设计计算的方法和内容还不明确,规范也没有给出相关的规定。本文对微型桩治理滑坡的设计计算方法进行探讨,并对其治理的效果进行监测分析。研究结论:(1)微型桩治理滑坡具有施工灵活、施工效率高等诸多优势,对于地形受限的滑坡工程,微型桩具有很好的治理效果和适应性;(2)监测数据表明,本滑坡工程采用微型桩处理是合适的,处理后滑坡工程的变形得到了快速、有效的控制,隧道、路基工程的安全性得到了保障;(3)微型桩的设计内容应包括整体稳定性、微型桩的长度、桩间距、桩的配筋等;(4)本文可为采用微型桩治理铁路滑坡的设计、施工等提供参考和借鉴。

Research purposes:The micro-pile has been used in foundation replacement,building reinforcement,retaining soil reinforcement,but the design and calculation theory of the micro-pile is seriously lagging behind.The design and calculation method and content of the micro-pile are not clear,and there are no relevant regulations.In this paper,the design and calculation method of landslide treatment by micro-pile is discussed,and its effect is monitored and analyzed.Research conclusions:(1)There are many advantages such as flexible construction and high construction efficiency.For landslide project with limited terrain,micro-pile has good governance effect and adaptability.(2)The monitoring data show that it is appropriate to adopt micro-pile treatment in the landslide project.After the micro-pile reinforcement treatment,the deformation of the landslide project has been quickly and effectively controlled,and the safety of the tunnel and roadbed engineering has been guaranteed.(3)The design content of the micro-pile should include the overall stability,the length of the pile,the pile spacing,and the reinforcement of the pile.(4)This paper can provide guidance for the design and construction of using micro-piles to control railway landslide.