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

地下结构及其周围地面热湿行为研究

基本信息

批准号：
09650648
负责人：
MIZUHATA Masayuki
金额：
$ 1.86万
依托单位：
Mie University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650648/
关键词：
Underground Structure Surrounding Ground Measurement of Water Content Distribution Measurement of temperature and Humidity Heat and Moisture Behavior Numerical Analysis Analytical Model Soil

项目摘要

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.

本研究的目的是通过实验和分析来阐明地下结构热湿环境的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，测量了地下空间的温度和湿度以及周围地面的温度和水分含量，即空间不产生热湿负荷。结果表明，地下空间的温湿度受换气量的影响，尤其是室外湿度的变化对地下空间的温湿度影响较大。发现距地面1米以下的地下温度不受室外温度日变化的影响，2m深度以下的地下温度受地下室室内空气温度的影响。连续测量地下水位，在无降雨的情况下，将地下水位稳定在地面以下-80 cm~-120 cm之间，利用含水率的测量结果对一种地面土进行了判断，发现该土的类型可能为砂土。利用该分析模型对地下空间和周围地面进行了热湿分析，并将地面和室内气候下的温湿场实验值与计算值进行了比较。结果表明，在地表附近，实验温度与分析温度之间有很好的一致性。