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本文进行了42根不同预应力度、不同配筋、不同截面形式、不同高跨比模拟梁在静载和重复荷载作用下挠度试验研究。对首次加载和200万次后加载实测结果进行了对比,给出了预应力、部分预应力、钢筋混凝土梁在疲劳荷载作用下挠度统一计算模式,供《桥规》修改时参考。
In this paper, 42 different prestressed, different reinforcement, different cross-sectional forms, different high-span ratio beam under static load and repeated load deflection test. The results of the first load and the load of 2 million times were compared. The prestressed and partially prestressed concrete beams under fatigue load were given a unified calculation mode for the reference of revision of “bridge gauge”.