气温骤降对薄壁混凝土结构温度应力的影响

采用有限单元法,对气温骤降时薄壁混凝土结构的温度场及应力场进行了仿真计算分析,结果显示,气温骤降会引起混凝土表面拉应力急剧增长,对施工期防裂十分不利,进一步论证了气温骤降时,对混凝土表面采取保温措施的必要性,该研究可为同类工程施工提供有益参考。

On influence of sudden drop in air temperature on temperature stress of thin-wall concrete structure

Adopts the finite element method to undertake the simulation calculation analysis of the temperature and stress fields of the thin-wall concrete structure under the sudden drop in air temperature, shows by the results that the sudden drop of temperature will cause the sharp increase in the tensile stress on the concrete surface which is unfavorable for the crack prevention in the construction period and proves that the necessity for the insulation measures in the sudden drop of air temperature, so the research provides some reference for similar engineering construction.