【作者】 叶阳升； 蔡德钩； 姚建平； 程爱君； 张千里； 史存林； 何华武；

【Author】 YE Yangsheng1,2,CAI Degou1,2,YAO Jianpin1,2,CHENGAijun1,2,ZHANG Qianli1,2,SHI Cunlin1,2,HE Huawu3(1.Railway Engineering Research Institute,China Academy of Rails Science,Beijing,100081,China;2.State Key Lab of Track Technology of High-speed Railway,China Academy of Rails Science,Beijing,100081,China;3.Railway Ministry of China,Beijing,100844,China)

【机构】 中国铁道科学研究院铁道建筑研究所； 中国铁道科学研究院高速铁路轨道技术国家重点实验室； 中国铁道部；

【摘要】 面对高速铁路路基工后沉降严格控制标准的挑战,开展了软土松软土、湿陷性黄土、膨胀土以及冻土等特殊土地基沉降控制的理论分析和试验研究。分析了不同特殊土的土性和分布,提出了相应处理方法。研究表明,软土松软土地基采用桩网、桩板结构等方法进行处理,湿陷性黄土地基采用柱锤冲扩桩、挤密桩、强夯等方法进行处理,膨胀土地基采用三碴隔水层、基床底层改良等方法进行处理,冻土路基采用设置防水保温层、控制路基填料细粒含量等方法进行处理,可实现高速铁路路基工后沉降控制的目的。更多还原

【Abstract】 Facing challenge of strict standard with settlement and deformation after construction of high-speed railway,theoretical analysis and experiment study had been carried out by the numbers,around special soil including soft soil,loose-soft soil,collapsible loess,swelled soil,frozen earth.The peculiar soil property and distribution had been studied,corresponding treatment was put forward.The study make clear that,soft soil could be treated by method of geosynthetics reinforced and pile supported structure and pile-slab,collapsible loess could by piles thrusted-expanged in column-hammer,compaction pile and dynamic compaction,swelled soil could by aquifuge layer,and sub-subgrade improvement,frozen earth could by waterproof layer and controlling content of fine particle,to control the settlement.更多还原