论文部分内容阅读
计算了中国建筑千米级摩天大楼在施工阶段和使用阶段的温度作用效应,考虑日照温差、季节温差、内部空调作用及垂直温度递减影响,给出四种温度作用工况的计算温度值,选用MIDAS/Gen和YJK两种有限元分析软件,分析结构在四种工况下典型位置处的温度变形特点和主要构件的温度内力情况,并比较四种工况下的结构温度效应的规律和大小。分析结果表明,日照作用对结构变形影响最大,内部空调作用影响次之,季节温差及垂直温度递减的影响较小;日照作用使结构向阳部分构件产生较大的拉力,结构加强层附近构件温度内力会明显增加;使用阶段由于内部空调作用的影响,内部与外部的温差会使外围构件产生一定的拉应力。
The effect of temperature on the construction and use phases of Chinese-built kilometer-skyscraper was calculated. The calculated temperature values for four temperature conditions were given considering the effect of sunshine temperature difference, seasonal temperature difference, internal air-conditioning effect and vertical temperature decrease. MIDAS / Gen and YJK two kinds of finite element analysis software were used to analyze the temperature deformation characteristics of the structure under typical conditions and the temperature and internal forces of the main components under the four conditions, and to compare the law and size of the structure temperature effect under the four conditions . The results show that sunshine effect has the greatest influence on the deformation of the structure, followed by the air conditioning effect, followed by the seasonal temperature difference and the decreasing of the vertical temperature. The sunshine effect causes a large pulling force on the sunny part of the structure, Will significantly increase; use phase due to the impact of internal air conditioning, the temperature difference between the inside and outside the peripheral components will have a certain tensile stress.