严寒地区混凝土箱梁实测温度梯度分析

On analysis of measured temperature gradient of concrete box girder in severely cold regions

以黑龙江省某混凝土箱梁桥为研究对象,通过对箱梁实测温度数据分析,发现混凝土箱梁底板存在明显的温度梯度。基于实测温度数据,提出了严寒地区混凝土箱梁桥温度梯度代表值计算模式,为严寒地区混凝土桥梁设计提供参考。

Taking some concrete box girder bridge in Heilongjiang Province as the research object,the paper analyzes the data of the measured temperature of the box girder,indicates the obvious temperature gradient at the bottom plate of the concrete box girder,and points out the temperature model for the central value of the temperature gradient of the concrete box girder bridge in severely cold regions,so as to provide some reference for the concrete bridge design in the areas.