森林工程2017，Vol.33Issue(1)：74-81,8.
地铁联络通道冻结法加固温度场数值优化分析
Numerical Optimization Analysis on Temperature Field ofFreezing Method for Reinforcing Subway Connection
摘要
Abstract
In this paper,a three-dimensional numerical model was established to study the development and distribution of the temperature field of the frozen soil curtain wall of Yushan Park Station －Suzhou Leyuan Station of Suzhou Subway.The optimized design scheme was also proposed for comparison analysis.It was mainly concluded that the weakest place of the entire connected aisle was at x=－10.7m,in which a small row of frozen tubes can be embedded to enhance the freezing effect;cooling laws of path 1,path 3 and path 5 are similar,which means the excavation area temperature is much higher than the temperature of frozen soil curtain area.The temperature of each analysis point was gradually reduced with the passage of time,and it was more difficult to excavate close to the frozen tube when the soil was in much lower temperature and higher strength.The cooling laws of the path 2 and path 4 were similar,which means the temperature of each analysis point is kept at around 18 ℃,and the temperature gradually decreases with the passage of time.The distance between the curves and the temperature decrement was approximately equal in every 5 days.The temperature of the soil in the upper tunnel was higher than that in the lower tunnel.It was shown that the dropping temperature along the X－axis(ie,vertical)was similar,and the dropping temperature along the Y－axis(ie,the transverse direction)was similar.The optimizing program to set the level of freezing tube could reduce the difficulty of the construction and cost savings.The results can provide technical reference for future similar engineering design.关键词
联络通道/地铁/冻结法/数值模拟/优化分析Key words
connected aisle/subway/freezing method/numerical simulation/optimization分类
交通工程引用本文复制引用
朱云云,胡俊,卫宏,赵联桢..地铁联络通道冻结法加固温度场数值优化分析[J].森林工程,2017,33(1):74-81,8.基金项目
国家自然科学基金项目(51368017) （51368017）
海南省科技项目(ZDXM2015117) （ZDXM2015117）
海南省重点研发计划科技合作方向项目(ZDYF2016226) （ZDYF2016226）
海南省教育厅高等学校科研项目(Hnky2016ZD-7 （）
Hnky2015-10) （）
