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日照辐射及由其产生的温度梯度作用是大跨度桥梁结构设计中十分重要的可变作用之一,国内设计流线型扁平钢箱梁桥一般参照英国BS 5400规范进行取值,目前国内钢箱梁温度梯度分布的实测研究分析公开刊物涉及不多。基于设计验证的目的,应用嘉绍大桥主航道桥ERS钢桥面铺装及钢箱梁断面温度实时监测系统所采集的数据,将钢箱梁实测温度梯度场与中国规范JTG D60-2015和英国BS 5400规范的取值及其效应进行了对比计算分析,所得结论可为同类桥梁的设计提供参考。
Radiation and its temperature gradient caused by the role of the long-span bridge structural design is one of the most important variable effects, the domestic design of streamlined flat steel box girder bridge generally refer to the British BS 5400 specification value, the current domestic steel box girder temperature Gradient distribution of the actual research analysis Publications involved little. Based on the data collected by ERS steel deck surfacing and steel box girder section temperature real-time monitoring system in the main channel bridge of Jiashao Bridge, the measured temperature gradient field of steel box girder is compared with the Chinese standard JTG D60-2015 and the UK BS 5400 norms and their effects were calculated and analyzed comparatively, the conclusions can provide reference for the design of similar bridges.