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水泥混凝土路面性能显著受到温度应力影响。我国地大物博,各地区气候不同,路面结构亦有差别,为准确了解本地水泥混凝土路面结构的受力性能,针对具体结构进行区域温度场和温度应力研究是十分必要的。以福建省南平市、福州市两地水泥混凝土路面结构为研究实体,进行了3个不利季节的现场温度场监测,并得到相关的重要实测数据。阐述了试验路段温度场的具体监测方案,包括温度传感器和自动气象站的布置、埋设,以及现场观测程序等。基于测试数据处理,分析了贫水泥混凝土基层和冲击压实破碎水泥混凝土板作垫层的两种水泥混凝土路面结构温度场、温度梯度的分布特性。校验了目前常用的一维温度场和二维温度场的适用性,得到一些有意义结论,为水泥混凝土路面温度场及温度应力深入研究提供了试验依据。
Cement concrete pavement performance significantly affected by temperature stress. China’s vast territory, different regions of the climate, the pavement structure is also different, in order to accurately understand the local cement concrete pavement structure of the performance, the specific structure of the regional temperature field and temperature stress is necessary. Taking the cement concrete pavement structure of Nanping and Fuzhou in Fujian Province as the research entity, the on-site temperature field monitoring in three adverse seasons was conducted and the relevant important measured data were obtained. The specific monitoring scheme of the temperature field in the test section is described, including the arrangement of the temperature sensor and the automatic weather station, the embedding, and the on-site observation procedures. Based on the test data processing, the distribution characteristics of the temperature field and the temperature gradient of the two kinds of cement concrete pavement structure of the poor cement concrete base and impact compacted broken concrete slab were analyzed. The applicability of the commonly used one-dimensional temperature field and two-dimensional temperature field is verified, and some meaningful conclusions are obtained, which provides experimental basis for in-depth study on the temperature field and temperature stress of cement concrete pavement.