摘要
为了更准确地实现对早期混凝土的温度场和温度应力场的模拟,通过考虑水化度对混凝土生热模型的影响,采用基于成熟度的混凝土弹性模量增长公式,同时在应力分析中采用双幂徐变函数模型,基于ABAQUS二次开发平台编写了相应的粘弹性本构模型,并经过数值测试和分析验证了其正确性。
In order to obtain a more accurate simulation of temperature and temperature-stress field of the early age concrete,elastic modulus growth formula of concrete based on the maturity was adopted to consider the influence of hydration degree on concrete heat generation model.At the same time,the double power law creep function model is used in the process of stress analysis.The viscoelastic constitutive model has been written based on secondary development of ABAQUS platform,and its validity was verified through numerical tests and analysis.
作者
王宁
WANG Ning(Tianjin Municipal Engineering Design&Research Institute Co.,Ltd.,Tianjin 300392,China)
出处
《低温建筑技术》
2021年第8期45-48,共4页
Low Temperature Architecture Technology
