摘要
能量桩桥面除冰是一种绿色新技术,利用浅层地热能进行低能耗除冰融雪符合工程建设节能减排与绿色发展理念,有着良好的应用前景。为了研究能量桩-桥面系统在不同循环流速下的试验效果,以桥面布管20cm的试验区进行了流速0.4、0.6、0.8m/s的数值模拟分析,结果表明:随着流速的增大能加快桥面升温和除冰效率;随着流速的增大,桥面板各层结构都有明显的温度升幅,产生了更高的热量,桥面板温度随着时间的变化率基本一致,桥面板温度与时间呈线性相关;随着流速的增大桥面板热通量有着较明显的升幅,但最后都稳定在35~60W/m^(2),平均换热效率在60W/m^(2),换热效率仍较好。
Deicing of energy pile bridge deck is a new green technology, it has a good application prospect by using shallow geothermal energy to deice and melt snow with low energy consumption, it is in line with the concept of energy saving and emission reduction and green development in engineering construction. In order to study the experimental effect of the energy pile-bridge deck system under different circulating flow rates, numerical simulation analysis was carried out at the flow rates of 0.4m/s, 0.6m/s and 0.8m/s in the test area with 20cm pipe on the bridge deck. The results show that the temperature rise and deicing efficiency of the bridge deck can be accelerated with the increase of the flow rate. With the increase of flow velocity, the temperature of each layer of the bridge panel increases significantly, resulting in higher heat. The change rate of the temperature of the bridge panel is basically the same with time, and the temperature of the bridge panel is linearly correlated with time. With the increase of the flow rate, the heat flux of the bridge panel increases obviously, but it finally stabilizes at 35~60W/m^(2), and the average heat transfer efficiency is 60W/m^(2), it is still good effect.
作者
王强
刘英哲
李鹏
徐扬
牛彦平
韩志攀
WANG Qiang;LIU Yingzhe;LI Peng;XU Yang;NIU Yanping;HAN Zhipan(The Fourth Construction Co.,Ltd.of CSCEC 7th Division,Xi'an 710016,China)
出处
《建筑结构》
CSCD
北大核心
2022年第S02期2530-2534,共5页
Building Structure
关键词
能量桩
桥面除冰
热响应特性
数值模拟
energy pile
bridge deck deicing
thermal response characteristics
numerical simulation
