摘要
本文对冰盖进行数值模拟分析,并结合《水工建筑物抗冰冻设计规范》(GB/T50662-2011)和部分研究成果中总结的经验公式,进行论证数值分析的可行性和准确性。由数值分析结果得知:1m厚的冰盖在初始温度-20℃、动态温度场每2h升高10℃、直立墙约束的条件下,边角处分布最大压应力值为0.27167MPa;并对不同厚度下的应力分布也进行了数值分析,分析结果与规范和经验公式差异较小。事实证明数值分析可作为水工结构劣化分析的有效手段。
In this paper, the numerical simulation analysis of the ice sheet was carried out, and the feasibility and accuracy of the analysis itself were demonstrated, the empirical formulas was summarized. in combination with anti-freezing specifications of GB/T 50662-2011 hydraulic structures and some other related research results. The conclusions shows that the maximum compressive stress at the edge is -0.271 67 MPa , in condition that the ice sheet thickness is 1 meter with the initial temperature -20 ℃ and the dynamic temperature field increases by 10 ℃ per 2 h. At the same time, the stress distribution under different thickness is analyzed numerically, and the difference between the analysis result and the norm and empirical formula is indistinct. It is proved that numerical analysis can be used as an effective method for the analysis of hydraulic structure deterioration.
作者
李达
苏安双
孙颖娜
阎烁
LI Da;SU Anshuang;SUN Yingna;YAN Shuo(School of hydraulic and electric power, Heilongjiang University, Harbin 150080,China;Heilongjiang Province Hydraulic Research Institute, Harbin 150080,China)
出处
《水利科学与寒区工程》
2019年第4期69-74,共6页
Hydro Science And Cold Zone Engineering
关键词
水工建筑物
冰害
数值模拟
hydraulic structures
ice damage
numerical simulation
