通过试验考察了应力水平、持荷时间、作用温度和混凝土强度等级等因素对混凝土高温短期徐变的影响。结果表明,混凝土高温短期徐变与应力水平和持荷时间分别呈正比和幂函数关系,而随作用温度增加抛物线状地增大。但混凝土强度等级不同时这些因素的影响程度也有所不同,并且混凝土强度等级和作用温度具有明显的耦合影响特性。基于这些试验结果分析,该文给出了有助于更好地进行混凝土结构高温受力性能计算分析的混凝土高温短期徐变计算模型。 The effects of stress level, holding time, temperature and strength level of concrete on the creep of concrete at high temperature were investigated. The results show that the short-term creep of high temperature concrete is directly proportional to and power function relationship with the stress level and holding time, and increases parabolically with the increase of working temperature. However, the influence degree of these factors is different when the concrete strength grades are different, and the concrete strength grade and the action temperature have obvious coupling and influencing characteristics. Based on the analysis of these test results, a short-term high-temperature creep calculation model of concrete is proposed to help better calculate and analyze the high temperature mechanical properties of concrete structures.