检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:郑长伟 李申 ZHENG Changwei;LI Shen(China Railway Construction Bridge Engineering Bureau Group Co.,Ltd.,Tianjin 300457)
机构地区:[1]中国铁建大桥工程局集团有限公司,天津300457
出 处:《公路交通技术》2024年第2期171-175,共5页Technology of Highway and Transport
摘 要:为解决高寒高海拔地区运营隧道的冻害问题,在某单洞双向隧道4个断面的不同位置处布设了大量温度传感器进行现场温度监测,分析研究了特高海拔寒区隧道围岩、衬砌在不同位置处的温度场分布规律以及围岩冻深情况。结果表明:隧道温度随季节呈周期性变化,距洞口10 m处冻害最为严重;隧道衬砌温度与隧道纵向深度呈负相关,围岩温度与隧道径向深度呈正相关关系;在距隧道洞口越近的最不利断面处,拱顶温度高于拱腰和拱脚;距洞口10 m的拱脚处冻深最大,隧道冻深影响范围为0 m~250 m。研究结果可为寒区隧道施工和保温防冻提供依据和指导。In order to solve the problem of tunnel freezing in high-cold and high-altitude areas,a large number of temperature sensors were deployed at different locations in four sections of a tunnel.Based on-site monitoring,the temperature field distribution and freezing depth of surrounding rock and lining and different locations of tunnels in extremely high altitude cold areas are studied.The results show that:1)The tunnel temperature changes periodically with the season,and the frost damage is the most serious at 10 m of the entrance;2)The tunnel lining temperature is negatively correlated with the longitudinal depth of the tunnel,and the peripheral rock temperature is positively correlated with the radial depth of the tunnel;3)In the most unfavorable section of the tunnel,the temperature of the vault is higher than that of the waist and foot of the arch;4)The freezing depth is the largest in the arch foot at 10 m of the entrance,and the affecting range of freezing depth of the tunnel is 0-250 m.The results of the study can provide a basis and guidance for the construction of tunnels in the cold area and the thermal insulation against freezing.
关 键 词:隧道冻害 温度传感器 现场监测 温度场 冻结深度
分 类 号:U456[建筑科学—桥梁与隧道工程]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.200