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摘要：
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对季节性冻土地区客运专线的路基基床结构进行了优化,通过现场填筑试验证实优化后的路基基床填筑方案,即铺设两布一膜,上覆5 cm中粗砂,再铺设55 cm厚级配碎石达到了检验标准,可在所研究的工程中推广使用。同时提出采用C25纤维混凝土代替原设计8 cm沥青混凝土作为防水层,优化后的防水层在施工操作性和质量保证方面有较大优势。
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This paper makes the subgrade bed structural improvement of High Speed Railway in seasonal frozen region.The optimized option of subgrade bed structure is layed geotextile firstly,placed 5 cm thickness sand secondly,and 55 cm thickness graded crushed stone lastly,the option is proved to conform to standard.Therefore,the optimized option of subgrade bed structure is used on the engineering construction.The bituminous concrete is replaced by C25 fiber-reinforced concrete to be as the material of 8 cm waterproof layer.The latter has the advantages of easy operation and quality assurance.
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基金项目：
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作者简介：
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参考文献：
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[1]窦红波.浅谈季节性冻土路基隔离层的设置[J].四川建筑,2006,26(3):61-62.
[2]司剑锋.季节性冻土地区保温护道的设置原则[J].铁道标准设计,2008(2):26-28.
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