水力发电2011，Vol.37Issue(7)：27-30,4.
昼夜温差对薄壁混凝土结构温度应力的影响分析
Impact of Diurnal Temperature Difference on the Stress of Thin-walled Concrete Structure
摘要
Abstract
The thin-walled concrete structure is more prone to cracking when constructing on the condition of larger diurnal temperature difference. The 3-D FEM is adopted to simulate the thermal and stress fields of a thin-walled concrete structure during construction after considering diurnal temperature difference. The results show that the fluctuation of stress will appear not only in the surface but also in the inner, and the fluctuation range is between 0.3-1.9 Mpa, which is adverse to temperature control and crack prevention. The simulation also shows that using daily temperature variation as input is more reasonable for analyzing the stress of thin-walled concrete structure. The research can be as reference to the projects which built in the area with larger diurnal temperature difference.关键词
薄壁混凝土结构/昼夜温差/温度场/应力场/温控防裂Key words
thin-walled concrete structure/ diurnal temperature difference/ temperature field/ stress field/ temperature control and crack prevention分类
建筑与水利引用本文复制引用
陈守开,孟美丽,刘秋常,王振红..昼夜温差对薄壁混凝土结构温度应力的影响分析[J].水力发电,2011,37(7):27-30,4.基金项目
国家自然科学基金资助项目(50779010) （50779010）
