冻融作用下高性能混凝土损伤评价方法研究

针对使用寿命预测模型的缺失性,研究冻融作用下高性能混凝土的使用寿命计算方法。结合工程实际情况,建议了高性能混凝土使用寿命的取值。从损伤的角度,进行了基于使用寿命的高性能混凝土损伤评价方法的探讨与分析,并建立了新的损伤评价模型与评价准则。基于已有的试验数据进行分析,结果展示了新的损伤评价方法的可行性和正确性。这一结果,为实际当中的高性能混凝土的使用寿命设计提供了参考。

STUDY ON THE DAMAGE EVALUATION METHOD OF HIGH PERFORMANCE CONCRETE UNDER FREEZE-THAW ACTION

Aimed to the lack of prediction model for service life, we have studied on the computational method of the high performance under freeze-thaw action. Combined with the actual situation, the value of service life is advised for the high performance concrete. From the perspective of damage, the method of damage evaluation is discussed and analyzed on the service life of high performance concrete. Furthermore, a new model and rule of damage evaluation is built. On the basis of analyzing from established test data, the result shows clearly that the new method of damage evaluation is feasibility and validity, which will supply a reference to the design of service life for the high performance concrete in practice.