土工格栅处治填挖过渡段路基不均匀沉降试验研究

Test & Research on Uneven Settlement of Cut-and-fill Transition Segment Road Bed Treated With Geogrids

填挖过渡段路基的工后沉降和不均匀沉降是路基工程较为突出的病害。填挖过渡段随着时间的推移和行车荷载影响,将会由于不均匀沉降引起“跳车”和路面开裂等现象。针对这一问题,对应用土工格栅处治填挖过渡段路基不均匀沉降进行了工程实体试验。对试验结果进行了分析,对填挖过渡段的工后沉降控制标准和路面铺筑时间提出了建议。

After work settlement and uneven settlement of cut- and- fill transition segment road bed earthwork are the major hazards in road bed project, as the time goes by, also influenced by traffic load, uneven settlement may occur at the cut-and- fill transition segment, which may cause consequently ＂jumping＂ and road face crack phenomenon, etc.. To settle this problem, engineering experiments are conducted by using geogrids to treat the uneven settlement on transition segment road bed earthwork, test results are analyzed for giving suggestions to after work settlement control standard for transition segment and road surface laying duration.