摘要
从日照和水化热两方面考虑高层剪力墙结构温度的作用效应.通过热传导微分方程导出日照作用下非匀质材料的差分格式,用数值方法求解墙体的温度场分布;考虑一般情况下的水化热降温曲线,求得构件在水化热反应过程中温度应力的等效温差.综合考虑两者的温度变化,计算结构的最不利温度应力和组合值.对一个实际的剪力墙结构进行了温度应力全过程计算.
Two factors are taken into account in the researches on thermal effects on shear wall structures: solar radiation and hydration heat. A finite-difference function based on the differential equation governing the heat conduction is deduced to calculate temperature distribution for concrete wall. According to the temperature dropping curves of hydration heat, authors also consider the equivalent temperature variation of thermal stress due to the hydration reaction of the cement. From above, the most dangerous thermal stress is calculated. Finally, the temperature distribution and stress analysis of a high-rise shear wall structure are carried out.
出处
《建筑结构》
CSCD
北大核心
2000年第2期8-11,16,共5页
Building Structure
关键词
剪力墙结构
温度应力
热传导方程
高层建筑
shear wall structure
thermal stress
heat conduction equation
finite-difference method
hy-dration reaction
