Abstract：Based on Cai Hao model, through the theoretical derivation and combination with freezing and thawing of material test data, the calculation method of maximum hydrostatic pressure in the model is improved. 9 groups of material test are conducted to establish the fitting relationship between concrete water-cement ratio and the maximum freezing rate, and derive the simplified analytic calculation formula of maximum hydrostatic pressure. ANSYS finite element software is used to simulate the temperature field distribution of component section to get the corrected freezing and thawing damage model considered the temperature field. Finally, 2 groups of experiments is implemented to verify the accuracy and reliability of the improved freeze-thaw damage model, and the results show that the revised freezing and thawing damage model using dynamic elastic modulus as physical damage index can provide theoretical support for the freeze-thaw damage mechanism research of RC structure and members.
郑山锁 汪 锋 付晓亮 王子胜 甘传磊. 基于材性的混凝土结构及构件冻融损伤模型试验研究[J]. 振动与冲击, 2016, 35(3): 176-183.
Zheng shansuo Wang Feng Fu Xiaoliang Wang Zisheng Gan Chuanlei. Experimental study on freeze-thaw damage model for concrete structure and members based on material. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(3): 176-183.
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