摘要
利用岩土工程有限元软件PLAXIS对软土地区加筋路堤的加筋效果和机理进行分析,探讨了土工格栅轴向刚度EA的大小和加筋层间距、部位等因素对加筋材料的内力分布、路堤坡脚水平位移、路基中心竖向位移的影响规律。结果表明:土工格栅能有效地抑制地基的侧向位移,对地基沉降起到均化作用,并能有效抑制路基坡脚外的隆起量,提高路基的稳定性。在路堤底部布设间距较小,刚度较大的格栅能显著的增强加筋效果。
Based on the finite element software PLAXIS,the effect and mechanism of reinforced embankment were analzed.The effect of geogrid axial stiffness and the reinforcement spacing on the internal force distribution,horizontal displacement of slope toe and the vertical displacement in the center foundation were discussed.The results indicate that the lateral displacement can be controlled by the geogrid effectively.The geogrid has a homogenization on the foundation settlement and can control the ground upheaval,so as to improve the stability of the subgrade.In order to improve the reinforced effect effectively,the geogrid should be placed in small space and has a large stiffness.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2012年第3期402-405,424,共5页
Journal of Chongqing Jiaotong University(Natural Science)
关键词
加筋路堤
加筋效果和机理
土工格栅轴向刚度
加筋层间距
reinforced embankment
effects and mechanism of reinforcement
axial stiffness of the geogrid
spacing between geogrid
