土工格栅加筋路面结构的理论分析  

Theoretical analysis of pavement structure reinforced by geo-grid

作　　者：韩冰[1] 廖述清[1] 

机构地区：[1]中交第四航务工程勘察设计院有限公司,广东广州510230

出　　处：《水运工程》2009年第7期208-212,共5页Port & Waterway Engineering

摘　　要：通过选用合理的力学模型及力学参数,采用有限元法建立三维力学模型进行计算,分析土工格栅对旧路反射裂缝的改善原理及效果。分析结果表明,加铺格栅降低了裂缝处基层底面的应力集中,减小了基层底面的层底拉应力、剪应力值,但对弯沉值影响很小。By selecting logical mechanical model and parameter, three-dimensional finite element models are set up and calculated by ANSYS to analyze the improvement mechanics and effect on reflection crack occurraed in the old road. The results show that geo-grid will reduce the stress convergence on the crack undersurface base course and minish the tension stress and shear stress, but it has little influence on deflection.

关 键 词：反射裂缝 土工格栅 有限元分析 拉应力 弯沉 

分 类 号：U416.216[交通运输工程—道路与铁道工程]