土工格栅加筋路基结构沉降控制试验研究

摘要

Research purposes:In this paper,the settlement deformation characteristics and control effect of a new type of geotechnical grid reinforced roadbed structure is studied by the numerical simulation and field experiment,which is inexpensive,easy construction,good earthquake resistance,environmental and landscaping,and the research eonelutions provide basis for the application of this structure in similar engineering.Research conclusions:(1) Numerical analysis and field experiment show the new structure can meet the design requirement for foundation settlement and the technology is feasible.(2) The new structure retains the pattern and effect of the original roadbed structure,and could reduce the foundation reinforcement of the slope of the embankment on the premise of the embankment stability.The scale and quantity of the material of foundation reinforcement is reduced.(3) The new structure is suitable for subgrade bed of soft clay foundation in railway and highway constructions.%研究目的:土工格栅加筋路基结构具有节约成本、施工方便、抗震性良好、绿色环保及景观效果好等优点,本文通过数值模拟和现场试验,研究该路基结构的沉降变形特性和控制沉降效果,从而为该结构的工程应用提供依据.研究结论:(1)验证了土工格栅加筋路基结构在控制地基沉降方面能够满足设计要求,技术可行;(2)土工格栅加筋路基结构保留了原有路基结构型式及景观效果,在满足路堤稳定的前提下,可适当减弱路堤边坡部分地基加固强度,缩小了地基加固范围,减少了地基加固工程数量;(3)本文的路基加筋结构适用于铁路或公路软土路基基床结构.