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该文以彭李线(杨店子至迁西界)改扩建工程为例,介绍了土工格栅的实际应用效果。通过试验段试验效果分析,采用土工格栅网后,路基弯沉显著减小,不存在明显的高程差,没有出现一条纵向反射裂缝,取得了预期目标。最后分析土工格栅的作用机理,指出对其的使用必将是道路养护和改扩建工程中一种行之有效的手段。原因分析彭李线(杨店子至迁西界)改扩建工程是在原旧路基的基础上进行的改扩建工程,大部分路段都有帮宽现象,施工分段进行一段时间以后,帮宽部位由于沉降不同出现了纵向裂缝。对此我们进行了分析,大家一致认为,原路基部分已经固结稳定,沉降量极小,而拓
Taking Pengli Line (Yangdianzi to Qianxi community) reconstruction and expansion project as an example, this paper introduces the practical application effect of geogrid. Through the analysis of the test results of the test section, after using geogrids, the deflection of subgrade was significantly reduced, there was no obvious elevation difference, no longitudinal reflection crack appeared, and the expected goal was achieved. Finally, the paper analyzes the mechanism of geogrids and points out that its use will surely be an effective means of road maintenance and reconstruction. Analysis of causes Peng Li line (Yangdianzi move to the west) renovation and expansion project is based on the original roadbed reconstruction and expansion project, most of the sections have to help wide phenomenon, the construction section after a period of time to help wide parts Longitudinal cracks due to different subsidence. We have conducted an analysis of this, we all agreed that part of the original subgrade has been consolidated and stable, minimal settlement, and Extension