混凝土受拉徐变研究

The Research on Tensile Creep and Damage of Concrete

本文用纯弯曲试件，进行了不同高应力水平下受拉徐变破坏试验。得到了应力水平与试件破坏时间的关系，测得了试件的弯曲受拉徐变变形过程，给出了徐变变形的数学表达式，同时，计算了弯曲受拉徐变损伤值。

The pure bending beams were adopted to carry out the experiment of t6nsile creep failureunder various high Stress levels. By using the theory and method of statistics, the relationship betweenstress levels and the time of creep fsilure has been obtained. The tensile creep processes of pure bending beams have been observed and recorded. Thereby the creep deformations equation and evolutionalequation of damage were proposed. In addition, the values of creep damage have been calculated.