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针对在高原机场修建中冻土区域浇筑控制时,一直存在大量热损失的问题,提出基于非线性弹性理论模型的冻土区域浇筑控制与热损失关系分析法,该方法先对冻土区域的应变进行分析,确定冻土区体变增量情况,并以此为基础,确定高原冻土区域土体发生塑性应变增量与应力增量的关系,采用热物理参数计算出冻土区域土体温度场数值,得到冻融土的体积热容量,分析冻土区域进行浇筑控制时产生的冻融情况,确定导热微分方向,建立浇筑控制与热损失间的非线性弹性理论模型,分析高原机场修建中冻土区域浇筑控制与热损失的关系。实验结果表明,沿着浇筑中点的温度会随着浇筑控制时间的增长而降低,距离浇筑中心越远位置的土体,温度越低,热损失越快。
Aiming at the problem of a large amount of heat loss in the construction of frozen ground in the construction of highland airport, a lot of heat loss problems have been put forward. Based on the nonlinear elastic theory model, the relationship between pouring control and heat loss in permafrost region is proposed. Based on this, the relationship between the increment of plastic strain and the increment of stress in soils in the frozen soil region of the plateau is determined. The temperature of soil in the permafrost region is calculated using the thermophysical parameters Field volume, the volumetric heat capacity of frozen-thawed soils is obtained, the freeze-thaw situation during pouring control in permafrost regions is analyzed, the differential orientation of heat transfer is determined, and a nonlinear elastic model between pouring control and heat loss is established. Soil Pouring Control and Heat Loss. The experimental results show that the temperature along the pouring midpoint decreases with the increase of pouring control time. The farther the soil from the pouring center, the lower the temperature, the faster the heat loss.