Centrifuge model test study on temperature stress of heat transfer diaphragm wall
ZHENG Yun
WANG Jian
HUANG Pengcheng
ZHAO Wei
ZHOU Tong
Abstract：In order to study the change of temperature stress and its influence on the structure in the process of temperature changing,the centrifuge model test was used to simulate the heat transfer process of the diaphragm wall.Based on the one-dimensional heat conduction equation and Darcy's law,the similarity ratio of the physical parameters of transfer heat in centrifugal model test was deduced.The heating process was simulated in a 50 g centrifugal acceleration field,the temperature field and the strain of the model wall in sand foundation were measured,and the temperature stress of the model wall was calculated.The test results show that the temperature in sand foundation is related to spatial distribution,the closer the horizontal distance with heat transfer diaphragm wall is and the lower the buried depth is,the higher the temperature is.The temperature stress of heat transfer diaphragm wall is closely related to the buried depth.The temperature stress and the restriction effect of the model increase along with the increasing buried depth.
Keywords：ground source heat pumpdiaphragm wallcentrifugal model testtemperature fieldtemperature stress
Publication Date：2017-01-01