通过地处北方海域的胶州湾大桥的长期监测系统，提取沧口斜拉桥主梁跨中截面各测点温度数据，建立概率分布模型，结合国内外相关规范探讨基于极值分析的温度基准值计算方法，对极值温度的重现期与重现期值进行分析. 结果表明，极值温度的重现期值与温度原始样本分布函数及抽样样本容量有关，抽样样本容量取12时，50年重现期内同一测点温度极大与极小值可相差约65℃.研究结果可为钢箱梁截面设计与进一步研究温度应力影响提供依据.

The temperature data at each section of the middle span of Cangkou cablestayed bridge were extracted through the long-term monitoring system on the Jiaozhou Bay Bridge which located in north China sea to establish the probability distribution model.  Combined with relevant domestic and international standards, the temperature reference value calculation method based on extreme value analysis was discussed, and the recurrence and recurrence interval value of extreme temperature were analyzed. Results show that the recurrence interval value of extreme temperature is concerned with the original sample distribution function and sample volume. The difference between maximum and minimum value of the same measuring point in the 50 year recurrence period can be about 65℃ with a sample size 12. The result can provide a basis for section design of steel box girder and further research on influence of temperature stress.