G4216线仁寿经沐川至新市高速公路止点发育多处巨型滑坡,且新市镇作为仁沐新高速、宜新高速、新金高速、串新高速等4条高速公路转换的重要结点,有设落地互通的需求;因此给新市互通区的工程防护、处治设计提出了巨大挑战。在室内试验结...G4216线仁寿经沐川至新市高速公路止点发育多处巨型滑坡,且新市镇作为仁沐新高速、宜新高速、新金高速、串新高速等4条高速公路转换的重要结点,有设落地互通的需求;因此给新市互通区的工程防护、处治设计提出了巨大挑战。在室内试验结合工程现状反算的基础上综合确定滑带土力学参数,再通过滑坡剩余推力计算,得到主滑断面最大剩余下滑力为16 720 k N/m,远超支挡结构提供的极限抗滑强度。结合互通区构造物设计、路基标高、滑坡推力等因素确定了分区处治方案:清方减载实现整体稳定;前缘设桩加固次级滑面;后缘设锚杆(索)加固清方形成的高边坡;采用小截面抗滑桩支挡顶部中小型滑坡;结合坡面截排水措施共同防护。展开更多
Combined with the practical experience in constructing and maintenance managing the concrete pavement damage repair of Gaotang-Nenghuashan forest highway of Jiangle County,the common damage types and causes of rural h...Combined with the practical experience in constructing and maintenance managing the concrete pavement damage repair of Gaotang-Nenghuashan forest highway of Jiangle County,the common damage types and causes of rural highway concrete pavement in the northwestern mountainous area of Western Fujian Province were analyzed,and corresponding treatment measures to various damage were put forward.展开更多
文摘G4216线仁寿经沐川至新市高速公路止点发育多处巨型滑坡,且新市镇作为仁沐新高速、宜新高速、新金高速、串新高速等4条高速公路转换的重要结点,有设落地互通的需求;因此给新市互通区的工程防护、处治设计提出了巨大挑战。在室内试验结合工程现状反算的基础上综合确定滑带土力学参数,再通过滑坡剩余推力计算,得到主滑断面最大剩余下滑力为16 720 k N/m,远超支挡结构提供的极限抗滑强度。结合互通区构造物设计、路基标高、滑坡推力等因素确定了分区处治方案:清方减载实现整体稳定;前缘设桩加固次级滑面;后缘设锚杆(索)加固清方形成的高边坡;采用小截面抗滑桩支挡顶部中小型滑坡;结合坡面截排水措施共同防护。
文摘Combined with the practical experience in constructing and maintenance managing the concrete pavement damage repair of Gaotang-Nenghuashan forest highway of Jiangle County,the common damage types and causes of rural highway concrete pavement in the northwestern mountainous area of Western Fujian Province were analyzed,and corresponding treatment measures to various damage were put forward.