Studies on Heat and Moisture Behavior of Underground Structure and its Surrounding Ground

为了从实验和理论上阐明地下建筑热湿环境变化对周围地面的影响以及周围地面热湿环境对地下室内部环境的影响等相互作用，在自然条件下对地下空间的温度、湿度以及周围地面的温度、湿度进行了测量，并对地下室内部环境的温度、湿度进行了分析这意味着在空间中没有热量和水分产生负载的条件。结果表明，地下空间的温度和湿度受换气次数的影响，尤其是室外湿度的变化对湿度的影响更大。结果表明，距地表1米以下的地下水温度不受室外温度日变化的影响，2米以下的地下水温度受地下室室内气温的影响，地下水水位稳定在-80 ~-80cm之间，地下水水位的变化与室内气温的变化有关。在不降雨的情况下，在地面以下120 cm处，利用含水量测量结果，估算了一种地基土，发现这种土可能是砂土。利用该分析模型对地下空间及周围地面进行了热湿分析，并将地面温度场、湿度场和室内气候的实验值与计算值进行了比较。结果表明，在近地表处，实验温度与分析温度吻合较好。

The purpose of this research is to clarify experimentally and analytically such mutual actions that the effect of the change of heat and moisture environment in underground structure on the surrounding ground and the effect of heat and moisture environment in the surrounding ground on the internal environment in the basement.Temperature and humidity in underground space and temperature and moisture contents in the surrounding ground were measured in the natural conditions which mean no heat and moisture generating load in the space. It was shown that temperature and humidity in underground space was effected by the quantities of air change and especially humidity was much effected by the change of outdoor humidity. It was found that the temperature in the surrounding ground under one mater depth from the surface was not effected by the daily change of out door temperature and the temperature in the surrounding ground under two meter depth was effected by the room air temperature in the basement .The ground water level were measured continuously and the level was stabilized between -80cm and -120cm under the surface of floor in the case of no rainfall, Using the results obtained from measurements of moisture contents, a kind of ground soil was estimated and it was found that the kind of the soil might be assumed the sand. The thermal and moisture analysis of underground space and the surrounding ground are performed by using the analytical model, and the experimental values of the temp and moisture field in the ground and room climate were compared with the calculated values. The results show that the good agreement between the experimental temperature and the analytical temperature was obtained near the surface of the ground.