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Experiment and Analysis of Heat and Moisture Behavior of Underground Space and its Surrounding Ground

地下空间及周边地面热湿行为试验与分析

基本信息

批准号：
11650608
负责人：
MIZUHATA Masayuki
金额：
$ 2.3万
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：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650608/
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 the underground space, surface condensation on the walls, temperature and moisture contents in the surrounding ground, outdoor temperature, humidity and solar radiation, the depth of water table and so on were measured during the term of project in the conditions which an 100W incandescent lamp was always lighted and the rate of air change was about 5 times in a basement. It was shown that moisture condensation of the envelope surface is occurred at the floor and the lower parts of the walls through spring and summer, and the average depth of water table is 4.2m and became to shallow after the large quantity of the maximum change of the variation was about 85cm. Numerical analysis of heat and moisture behavior of the underground space by couple heat and moisture transfer equations is performed using the annual experimental data. The numerical results are compared with the experimental results. The results show that the numerical results agree with the experimental results in terms with room temperature and humidity of the underground space and its surrounding ground. Therefore the analytical method is valid for thermal design and moisture proof design of underground spaces.

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。在工程期间，在地下室内始终点亮100W白炽灯的情况下，测量了地下空间的温湿度、墙面结露、周围地面的温度和含水率、室外温度、湿度和太阳辐射、地下水位深度等。结果表明，春夏两季围护结构表面的水汽凝结发生在地面和墙体下部，地下水位平均埋深为4.2m，最大变化幅度在85 cm左右时开始变浅。利用地下空间的年度实验数据，利用热湿耦合方程对地下空间的热湿行为进行了数值分析。将数值计算结果与实验结果进行了比较。结果表明，在地下空间及其周围地面的室温和湿度条件下，数值计算结果与实验结果基本吻合。因此，该分析方法对地下空间的热设计和防潮设计是有效的。