摘要
研究了混凝土屋面结构体系的时变温度效应问题。首先基于天文物理学原理建立了屋面结构体系的太阳辐射模型,并在模型中考虑了周边建筑的遮蔽效应。然后建立了混凝土屋面结构体系在太阳辐射作用下的时变温度效应分析方法。在此基础上,以中国南方某多层钢筋混凝土结构屋面为工程背景,研究了结构的时变温度效应特点和规律并与实测结果进行了对比。结果表明,采用文中方法可以准确地模拟结构体系的时变温度场和时变温度梯度。
The simulation on time-varying temperature effects of the concrete roof subjected to solar radiation are actively carried out in this study.The model of the solar radiation is constructed based on astrophysics principles and the shading effects are taken into consideration.Furthermore,the analytical approach for the temperature effects of the concrete roofs is proposed.A real multi-story concrete building constructed in southern China is taken as an example to examine the possibility and feasibility of the proposed approach.The time-varying temperature fields and thermal gradients of the concrete roof are investigated to explore the structural thermal distribution.The corresponding comparison between numerical simulation and testing are also carried out.The made observations indicate that the proposed approach can accurately simulate the structural temperature distribution and thermal gradients under solar radiation.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2011年第4期73-77,共5页
Journal of Wuhan University of Technology
基金
中央高校基本科研业务费专项资金项目(2010-II-019)
关键词
温度效应
混凝土屋面
太阳辐射
遮蔽效应
temperature effect
concrete roof
solar radiation
shading effects
