可呼吸方法解决大体积混凝土的温度应力

Solution to Alleviate the Temperature Stress in Large Volume Concrete with Breathing Method

针对不设缝大体积混凝土结构的温度应力问题,提出了一种“可呼吸”的解决方法。通过设置滑动层,使结构成为一种“可呼吸”体系,从而有效地降低温度应力。结合工程实例,由实验测得滑动层材料的静、动摩擦系数,运用有限元方法计算了温差引起的温度应力。结果表明,运用“可呼吸”方法可以明显降低大体积混凝土结构的温度应力。

A breathing method was set up to solve the problem of temperature stress m large volume concrete constructions without slots. By setting the sliding floor a breathing system was built up and the temperature stress reduced distinctly. At last combining the project example, the static and kinetic friction coefficients of the sliding floor materials were measured through experiments, and the temperature stress produced by temperature difference was computed with the FEA method. It was indicated that the breathing method could efficiently decrease the temperature stress in large volume concrete constructions.