寒冷地区隧道防冻隔温层设计计算方法及应用  

DESIGN METHOD AND APPLICATION FOR ANTI-FREEZING THERMAL-PROTECTIVE LAYERS IN COLD-AREA TUNNELS

作　　者：陈建勋[1] 

机构地区：[1]长安大学公路学院桥梁与隧道陕西省重点实验室

出　　处：《土木工程学报》2004年第11期85-88,共4页China Civil Engineering Journal

摘　　要：本文根据隧道衬砌表面、衬砌内部、围岩内部的温度及隧道洞内外气温和风速的实测结果 ,获取了隧道温度场的分布情况以及隧道内发生冰冻段的长度和冻结深度的第一手资料。在此基础上 ,提出了增设套拱、设置防冻隔温层的防冻害结构和防冻隔温层厚度的计算方法。该防冻结构和计算方法应用于某隧道防治冻害工程取得了成功。实测结果表明防冻隔温层防治冻害的效果非常显著。Through field measurements of the temperatures on the surface and the interior of the lining and the interior of the surrounding rocks,and of the temperatures and the wind velocities inside and outside the tunnel,first-hand data of the tunnel temperature field distribution and the length and depth of the frozen section in the tunnel were obtained.Based on the data,a proposal of adding extra arch linging and anti-freezing thermal protctive layer is made,and a caculation method for the thickness of the anti-freezing thermal-protective layer is put forward.The calculation mthod is successfully applied to the anti-freezing treatment of a cold-area tunnel,as demonstrated in the measurement data.

关 键 词：寒冷地区 隧道 防冻隔温层 

分 类 号：U452[建筑科学—桥梁与隧道工程]