黄土山区非对称加筋路堤受力特性研究

发布时间：2018-04-09 03:27

本文选题：非对称路堤　切入点：土工格栅　出处：《武汉大学学报(工学版)》2017年03期

【摘要】：由于受到黄土山区地形地貌条件的制约,在黄土山区修筑高速公路时经常会遇到非对称路堤问题,而非对称路堤极易引起各类路基路面病害.基于有限元分析软件,建立了非对称路堤数值模型,对比分析了未加筋、格栅加筋和EPS加筋3种工况下非对称路堤受力和变形特性.最后,针对运煤通道交通荷载特点,着重探讨了非对称交通荷载作用下3种工况下路堤的工作特性.研究结果表明:路堤施工过程中,EPS加筋技术处治效果要优于格栅加筋;但交通荷载作用下格栅加筋工况下路堤沉降、侧向变形明显小于EPS加筋工况,非对称路堤处治时宜采用格栅加筋技术.
[Abstract]:Due to the constraints of topographic and geomorphological conditions in the Loess Mountain area, the problem of asymmetric embankment is often encountered in the construction of expressway in the Loess Mountain area, and the asymmetric embankment can easily cause various kinds of subgrade and pavement diseases.Based on the finite element analysis software, the numerical model of asymmetric embankment is established, and the stress and deformation characteristics of asymmetric embankment under unreinforced, grid-reinforced and EPS reinforced conditions are compared and analyzed.Finally, according to the traffic load characteristics of coal transport channel, the working characteristics of embankment under three working conditions under asymmetric traffic load are discussed emphatically.The results show that the treatment effect of EPS reinforcement technology is better than that of grid reinforcement during embankment construction, but the lateral deformation of embankment under the condition of grid reinforcement under traffic load is obviously smaller than that of EPS reinforced condition.Asymmetric embankment treatment should adopt grid reinforcement technology.
【作者单位】：山西省交通科学研究院黄土地区公路建设与养护技术交通行业重点实验室;
【基金】：国家自然科学基金项目(编号:51608316) 交通建设科技项目(编号:2014318771100) 山西省交通厅科技项目(编号:2014-1-2)
【分类号】：U416.12

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