摘要
对京沪高速铁路徐沪段有代表性的下蜀粘土路基填料改良进行了土工离心试验研究。提出了掺水泥、石灰和固化剂等３ 种改良方法。对改良后的路基稳定边坡坡率，尤其是堤身的破坏机理进行了分析。结果表明，经改良后的路基，如沉降量控制在一定范围内时，能保持良好状态，沉降量过大，将会使堤身出现开裂。
Based on the centrifugal model test, Xiashu filled soil improvement of subgrade in Jinghu high speed railway is studied. Cement, lime and cure additives are used in the soil. Slope stability and failure mechanism of embankment are also analyzed. The results of the study show improved embankment could keep good state if the settlement of subgrade is controlled within certain range. The crack in the embankment will happen if the settlement is too large.Some conclusions and suggestions are also put forward at last.
基金
铁道部铁路科技研究开发计划项目
关键词
高速铁路
路基
下蜀粘土
填料
改良
离心试验
high-speed railway, subgrade, Xiashu cohesive soil, filled soil improvement, centrifugal model test
