土工格栅和土工格室处理拓宽路堤沉降及侧移比较研究

Comparative Study of Settlement and Sway About Geogrid and Geocell Reinforcement Widened Embankment

土工材料(土工格栅和土工格室)加筋处治是控制拓宽路堤不均匀沉降的常用技术措施。针对实例,利用有限元仿真分析软件,分别对单层土工格栅和土工格室铺设于路堤不同层位处治情况、多层土工格栅和土工格室采用不同层数、不同层位处治情况进行比较分析,研究土工格栅和土工格室加筋方案对控制路堤沉降及侧向位移控制效果及技术经济性。结果表明:在同等技术要求条件下土工格室明显优于土工格栅;多层处治存在性价比最佳层数;控制沉降和侧向位移土工材料所处最佳层位不同。计算实例拓宽路堤推荐方案:底部2层格室+顶部1层格栅。

Control the uneven settlement and lateral displacement of the widening embankment reinforced with geotechnical materials （geogrid and geocell） is commonly technical measures. Targeted an instance, take advantage of finite element simulation analysis software, respectively, compared the single-layer geogrid or geocell laid on the embankment of the different layers, mean while, ecompared multi-layers geogrid or geocell in different number of layers and different layer treatment, The effect, technical economy of embankment settlement and lateral displacement reinforced whth geogrid and geocell is researched. The results showed that： under the conditions of the same technical requirements the geocell is better than geogrid; The multi-layer treatment exists the best value for number of layers ; Control settlement and lateral displacement of which the best layers of geotechnical materials are different. Calculation example for widen the embankment recommended programs： 2 layersgeocell on the bottom ＋ 1 layer geogridon the top.