结合某公路钢箱梁桥在夏季极端高温下测得的温度数据,在其数据采集量受限情况下,参考铁路规范对实测温度数据进行曲线拟合,拟合的温度梯度曲线与实际温差曲线、规范给定的温度梯度模式进行对比,基本能包络其他两者,且对温度梯度作用计算偏安全,因此认为可以使用拟合的温差曲线来计算钢箱梁桥在相应时间点的温度梯度作用。 Combined with the measured temperature data of a steel box girder bridge in the summer extreme high temperature, in the case of limited data collection, the railway specification is used to curve the measured temperature data, and the fitted temperature gradient curve and actual temperature difference curve , The standard given temperature gradient mode for comparison, the basic envelope of the other two, and the calculation of the temperature gradient partial safety, so that you can use the fitted temperature difference curve to calculate the steel box girder bridge at the appropriate time point temperature gradient effect.