人民长江Issue(3)：42-44,51,4.DOI:10.16232/j.cnki.1001-4179.2015.03.012
隧道工程混凝土水化热与冻结壁相互影响研究--以甘肃引洮供水一期工程为例
Research on interaction between tunnel lining concrete hydration heat and frozen wall
叶庆 1石荣剑 1陈博1
作者信息
- 1. 中国矿业大学 深部岩土与地下工程国家重点实验室，江苏 徐州221008
- 折叠
摘要
Abstract
For the tunnel construction using frozen construction method, we study the mutual influence of tunnel lining con-crete hydration heat and frozen wall temperature field by comparison of numerical simulation and field test. It is shown that in the initial supporting period, under the action of the heat-insulation layer formed by the wooden board outside the steel arch and the shotcrete, the influential depth of the hydration heat on frozen wall can only reach a superficial range of 30 to 100mm after the secondary concrete lining, only the temperature of surface frozen earth rise to above 0℃ in short time and drop to below zero soon after. Although the secondary lining concrete is influenced by the low temperature of the outside frozen wall, the internal tempera-ture of the concrete can rise to above 28℃, while the temperature of outer surface of the concrete drops to below zero in 20 days, which demonstrates that the increase of concrete strength is hardly affected. The results of numerical simulation are consistent with those of the field test.关键词
温度场/冻结壁/冻结法/水化热Key words
temperature field/frozen wall/frozen construction method/hydration heat分类
建筑与水利引用本文复制引用
叶庆,石荣剑,陈博..隧道工程混凝土水化热与冻结壁相互影响研究--以甘肃引洮供水一期工程为例[J].人民长江,2015,(3):42-44,51,4.
