摘 要：研究了使用GB50010-2002《混凝土结构设计规范》中短期刚度计算公式计算再生粗骨料混凝土梁在短期荷载作用下的挠度。通过对6根不同再生骨料取代率（0、50%、70%和100%）和不同配筋率（0.68%、0.89%和1.13%）的再生粗骨料混凝土梁的受弯试验，分析了挠度与再生骨料取代率及配筋率的关系，对比再生混凝土梁挠度实测值与现行混凝土结构规范计算值，进行了统计分析。 对试验数据和文献数据统计回归得到在短期荷载作用下再生粗骨料混凝土梁的刚度修正公式，对本次试验数据的验证，计算结果与试验值吻合良好。本文提出的再生混凝土梁的短期刚度计算公式，可以准确的计算再生混凝土梁在短期荷载作用下的挠度，供相关规程和工程实践参考。
Abstract: The deflection under short-term loading of recycled coarse aggregate concrete beams is researched by using calculated formula of short-term rigidity in Concrete Structure Design Code （GB50010-2002）. According to testing the flexural performances of 6 recycled coarse aggregate beams with different recycled aggregate replacement ratio of 0%，50%，70% and 100% and reinforcement ratio of 0.68%，0.89% and 1.13%，the relationships between deflection, recycled aggregate replacement ratio and reinforcement ratio are analyzed. The statistical analysis is made by compared with measured values and calculated values of current concrete structure codes of the deflection of recycled coarse aggregate concrete beams. By experimental datas and statistical regression of literature datas， the rigidity modified formula of recycled coarse aggregate concrete beams are obtained under the effect of short-term loading. The calculation results are in good agreement with the experimental datas. The calculated formula of short-term rigidity of recycled concrete beams can accurately calculate the deflection under the effect of short-term loading of recycled coarse aggregate concrete beams，which can be referenced in engineering practice and correlative regulations.