格栅加筋新型土工填料压缩变形特性试验研究
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摘要
新型土工填料与土工格栅联合使用可以作为路基回填的一种新技术。通过考虑轮胎橡胶颗粒掺入比和格栅加筋层数的影响,采用单向压缩仪开展格栅加筋新型土工填料的压缩变形试验,并将其压缩特性与传统土类的压缩特性作比较,结果表明:格栅加筋新型土工填料的压缩模量整体比淤泥质土大,大部分超过可塑黏土的压缩模量,部分达到了半干硬黏土和细砂水平,可应用于处理淤泥质土工程等;轮胎颗粒含量3%和Dr为70%的新型填料加筋一层格栅的压缩模量近乎达到中砂压缩模量的水平,可替换中砂用于实际工程中。
In this study,a new geotechnical filler is combined with a geogrid which is used as a backfilling technique for the subgrade.The compression deformation test of a new geogrid reinforced geotextile is carried out by one-way compressor by considering the influence of tire particle mixing ratio and geogrid reinforced layer number.Then the compression characteristics of the traditional soil is compared with that of the traditional soil.The result shows that the compression modulus of grid reinforced new geotextile is larger than that of silty soil,and most of them exceed the modulus of compressibility of plastic clay,and partly reaches the level of semi dry hard clay and fine sand.It can be seen that the geogrid reinforced new filler technology is suitable for application in the treatment of silt soil.The compression modulus of a new type of grille stiffened with 3% of the tire particle content and 70% of the Dr is close to the level of the compression modulus of the medium sand,which can replace middle sand for practical engineering.
In this study,a new geotechnical filler is combined with a geogrid which is used as a backfilling technique for the subgrade.The compression deformation test of a new geogrid reinforced geotextile is carried out by one-way compressor by considering the influence of tire particle mixing ratio and geogrid reinforced layer number.Then the compression characteristics of the traditional soil is compared with that of the traditional soil.The result shows that the compression modulus of grid reinforced new geotextile is larger than that of silty soil,and most of them exceed the modulus of compressibility of plastic clay,and partly reaches the level of semi dry hard clay and fine sand.It can be seen that the geogrid reinforced new filler technology is suitable for application in the treatment of silt soil.The compression modulus of a new type of grille stiffened with 3% of the tire particle content and 70% of the Dr is close to the level of the compression modulus of the medium sand,which can replace middle sand for practical engineering.
引文
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[3]包承纲,汪明远,丁金华.格栅加筋土工作机理的试验研究[J].长江科学院院报,2013,(30):34-41.
[4]彭芳乐,小竹望,龙冈文夫.土工格栅加筋砂土的变形与破坏机理解析[J].岩土力学,2004,(25):843-849.
[5]冯宏伟.土工格栅加筋高填方路堤施工期变形规律研究[D].河北工业大学,2012.
[6]徐超,胡荣,贾斌.土工格栅加筋土地基平板载荷试验研究[J].岩土力学,2013,(34):2515-2520.
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[8]周健,徐洪钟.玄武岩纤维土工格栅加筋膨胀土三轴试验[J].南京工业大学学报,2013,(35):105-109.
[9] GB/T 50123—1999土工试验方法标准[S].1999.
[10]常士骠,张苏民,主编.工程地质手册:第四版[M].中国建筑工业出版社,2007.
[2]黎华联,许华亮.每年超千万吨废旧轮胎哪去了[J].环境经济,2015,(ZC):41.
[3]包承纲,汪明远,丁金华.格栅加筋土工作机理的试验研究[J].长江科学院院报,2013,(30):34-41.
[4]彭芳乐,小竹望,龙冈文夫.土工格栅加筋砂土的变形与破坏机理解析[J].岩土力学,2004,(25):843-849.
[5]冯宏伟.土工格栅加筋高填方路堤施工期变形规律研究[D].河北工业大学,2012.
[6]徐超,胡荣,贾斌.土工格栅加筋土地基平板载荷试验研究[J].岩土力学,2013,(34):2515-2520.
[7]羊晔,刘松玉,邓永锋.加筋路基处治不均匀沉降模型试验研究[J].岩土力学,2009,(30):703-711.
[8]周健,徐洪钟.玄武岩纤维土工格栅加筋膨胀土三轴试验[J].南京工业大学学报,2013,(35):105-109.
[9] GB/T 50123—1999土工试验方法标准[S].1999.
[10]常士骠,张苏民,主编.工程地质手册:第四版[M].中国建筑工业出版社,2007.