混凝土箱梁温度分布及其影响分析

摘要

During the period of cantilever construction control of a continuous box girder bridge, the temperature field of box girder concrete is observed in site. The observation shows that temperature of concrete box distributed along the height of box-girder non-linearly. According to the analysis of temperature data, a model for temperature calculating is proposed. On this basis, the temperature stress and deformation are analysed.%结合某连续箱梁桥悬臂施工控制,进行了箱梁混凝土温度分布的现场观测,观测结果表明,太阳辐射作用下,混凝土箱梁沿高度的温度分布为非线性分布.通过对温度实测数据的分析,提出了公路桥梁混凝土箱梁温差计算建议模式,在此基础上,对混凝土箱梁的温度应力、施工过程中的温度变形进行了分析研究.