摘要
以黄大重载铁路高路堤边坡为例,采用有限差分分析法,建立了考虑重载列车行车荷载影响的高路堤边坡数值模型。基于强度折减法,研究比较了未加固和采用水泥土搅拌桩加固的高路堤边坡的稳定性。研究表明:水泥土搅拌桩加固边坡可有效限制重载列车振动行车荷载下的高边坡的侧向变形,使边坡稳定性显著提高。在此基础上,分析了影响高路堤边坡稳定性的水泥土搅拌桩桩长、桩径及桩距等支护参数的影响程度,从理论上保障了黄大重载铁路高路堤边坡在施工和运营阶段的安全。
Based on a high embankment slope in Huang-da heavy-load railway engineering,a finite difference numerical model of the slope is established,which considering on the vibration load effect of the heavy-duty train.Using strength reduction method,the stability of the high embankment slope is analyzed,and the difference between unreinforced and reinforced by cement-soil mixing pile is compared.The result shows that the stability of the slope is significantly increased by the cement-soil mixing pile.The reason is possible that cement-soil mixing pile reinforcement limits the lateral displacement of the slope,which is caused by the vibration load effect of the heavy-duty train.On this basis,the reasonable values of the pile length-diameter ratio and pile spacing of the cement-soil mixing pile is discussed and proposed,therefore,this paper theoretically ensures the increasing of the stability of the high embankment slope during the construction and service stage.
出处
《建筑技术开发》
2020年第6期88-90,共3页
Building Technology Development
关键词
重载铁路
高边坡
水泥土搅拌桩
稳定性分析
heavy-load railway
high slope
cement-soil mixing pile
stability analysis
作者简介
刘振楠(1982—),男,天津人,高级工程师,主要研究方向为工程管理方面。
