摘要
为研究冻结法在富水砂卵石地层条件下的适应性以及冻结设计方案的合理性,以成都地铁某区间联络通道冻结加固工程为背景,研究不同冻结盐水温度对人工冻结法温度场的影响。主要得到以下结论:温度荷载比实测盐水温度高2℃时,不能满足设计要求,当温度荷载为实测盐水温度时,在满足设计要求的同时,合理的利用了资源与空间。当温度荷载比实测盐水温度低2℃时,冻结壁厚度偏大,会侵入联络通道开挖界限。
The freezing and strengthening project of a connecting aisle in the Chengdu metro was constructed in the water-rich sand and pebble formations.In order to study the adaptability of freezing method and the rationality of freezing scheme,the effect of different frozen brine temperatures on the temperature field of the artificial freezing method was studied.The main conclusions are as follows: when the temperature load is 2 ℃ higher than the measured brine temperature,it cannot meet the design requirements.When the temperature load is the measured brine temperature,it satisfies the design requirements while rationally using resources and space.When the temperature load is 2 ℃ lower than the measured brine temperature,the thickness of the frozen wall is too large,which will invade the boundary of the connection aisle excavation.
作者
张生权
霍永鹏
文彦鑫
揭定前
伍旺
晏启祥
Zhang Shengquan;Huo Yongpeng;Wen Yanxin;Jie Dingqian;Wu Wang;Yan Qixiang(China Railway Construction Bridge Engineering Bureau Group No.2 Engineering Ltd.,Shenzhen 518083,China;Key Laboratory of Transportation Tunnel Engineering,Ministry of Education,Southwest Jiaotong University,Chengdu 610031,China)
出处
《山西建筑》
2020年第16期7-9,共3页
Shanxi Architecture
基金
国家自然科学基金项目(51678500)。
关键词
地铁
联络通道
盐水温度
温度场
subway
connecting aisle
brine temperature
temperature field
