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叶甲淳 金伟良 邹道勤 严家熺
(浙江大学结构工程研究所 杭州 310027)[提要] 砌体结构中由温度应力引起的温度裂缝问题一直没有得到很好的解决。有限元是计算温度应力的很好方法,但是对于计算中所需的温度参数取值并没有统一的标准。在参考已有温度参数取值方法的基础上,提出了既考虑年温差又考虑日温差的组合温差取值方法,并将这一方法应用于混凝土空心小砌块试点建筑的温度应力计算。通过计算,证明这。方法是合理的。
[关键词] 混凝土小型空心砌块 年温差 日温差 组合温差 温度应力Thermal crack problem in masonry structure is not resolved yet. Finite element analysis method is an effective method for calculating thermal stress,but the temperature parameters for calculation have no uniform standard. We put forward a method named combined-difference-1n-temperature, which involves year-difference-in-temperature and day-difference-in-temperature.By this method, we calculate the combined difference-in-temperature and apply them to the thermal stress calculation for a small concrete hollow block building. The results proved that the method is reasonable.
Keywords: small concrete hollow block; thermal stress; difference; temperature; combination; year; day