藏区季节性冰冻地段路基施工技术要点  

Key Points of Roadbed Construction Technology in Seasonally Frozen Areas of Tibet

作　　者：陈云川 Chen Yunchuan(Gansu Wantai Construction Engineering Co.,Ltd.,Lanzhou,China)

机构地区：[1]甘肃万泰建设工程有限公司,甘肃兰州

出　　处：《科学技术创新》2024年第12期120-123,共4页Scientific and Technological Innovation

摘　　要：G248线大岭山至新城二级公路处于甘南藏族自治州东部,海拔较高,冬季气温低,属于季节性冰冻地区。在季节性冰冻地区修建公路时,首先要考虑的就是冻胀作用导致公路出现翻浆、冻胀、拥包等病害。因此,在施工前就选择适宜的填料,做好排水设施,从而避免通车运营后经常需要进行维修和养护。The G248 Dalingshan Xincheng second-class highway is located in the east of Gannan Tibetan Autonomous Prefecture,with a high altitude and low winter temperature.It is a seasonally frozen area.When constructing highways in seasonal frozen areas,the first thing to consider is the frost heave effect,which can cause diseases such as frost heave,swelling,and bulging on the highways.Therefore,suitable filling materials should be selected before construction,and drainage facilities should be installed to avoid frequent maintenance and upkeep after opening to traffic.

关 键 词：季节性冰冻地区 冻胀率 强度 冻结深度 

分 类 号：U416.168[交通运输工程—道路与铁道工程]