斜坡高路堤路基病害治理及分析

Hazard Control of the High Embankment Constructed on Slope Foundation and Its Analysis

研究目的:受工程投资、使用功能等因素影响,在以往的铁路建设中出现过较多的斜坡高路堤路基工程。由于设计、施工对斜坡地形高路堤的建设经验可能存在不足,或为了节约工程投资对斜坡高路堤工程采取的措施安全储备不够,从而出现了部分斜坡高路堤路基病害。本文通过实例分析斜坡高路堤病害的治理并进行总结,供今后类似工程参考。研究结论:通过某铁路斜坡高路堤病害的治理及分析得出:(1)斜坡高路堤路基病害应急抢险可优先采用反压护道及钢花管桩注浆措施;(2)斜坡高填方路堤应加强上方侧排水、改善路基填筑材料及地基基底条件,提高安全储备;(3)斜坡高填方路堤宜设置侧向约束加固桩;(4)该研究结果对斜坡高路堤铁路、公路工程等设计施工具有指导意义。

Research purposes： Due to project investment and using function, a lot of high embankments constructed on slope foundation during the past construction of the railway engineering. The high embankment hazards occur because of lack of insufficient construction experience on slope foundation of design or construction, or else lack of enough safety coefficients for saving project investment. The results of this hazard control and its analysis can be used to provide an important reference to engineering practice. Research conclusions： The results of this hazard control and its analysis show that： （ 1 ） Loading berm and grouting pile with steel pipe are the preference measures for emergency foundation. （2） For the high embankments constructed rescue of high embankments hazards constructed on slope on slope foundation, the drainage, filling material and foundation conditions must be strengthen, the safety factor should be much higher should be taken for the high embankments constructed on slope foundation. （4） The reference to railway and road engineering constructed on slope foundation. （ 3 ） Constraint reinforcement piles research resuhs have an important reference to railway and road engineering constructed on slope foundation.