岛状多年冻土地区CFG桩温度场分析

摘要

在伊绥高速公路K44＋400～K44＋575段建立CFG桩-岛状冻土温度试验场，通过观测并分析CFG桩在岛状冻土中的温度变化情况，得出了CFG桩在岛状冻土中的温度变化特点，以及桩上筏板的温度变化规律，并通过有限元软件建立CFG桩-岛状冻土热传递模型，分析了不同的影响因素对CFG桩温度场的影响，并得出部分结论。%The paper establishes CFG pile-islet frozen earth temperature test field at K44 ＋ 400 ~ K44 ＋ 575 along Yi-Sui expressway, analyzes the temperature changes of the CFG pile at the islet permafrost areas by the observation, concludes the features of the CFG pile＇s temperature changes in the islet frozen earth and the temperature change law of the raft plate on the pile, establishes the heat transfer model for the CFG pileislet frozen earth by using the finite element software, analyzes the influence of various factors on the temperature field of the CFG pile and achieves partial conclusions.