谈石首长江大桥主墩承台混凝土温控措施

Discussion on major pier cushion cap concrete temperature control measures of Shi-Shou Yangtze River Bridge

以石首长江公路大桥为例,从浇筑分层布置、冷却循环水控制、混凝土配合比优化、现场养护等方面,阐述了大桥主墩承台混凝土施工的质量控制措施,指出承台浇筑后表面基本无温度应力裂缝的产生。

Taking Shi-Shou Yangze River highway bridge as an example,starting from aspects of grouting segmented allocation,cooling recycled water control,concrete mixing proportion optimization and in-situ maintenance,the paper describes major pier cushion cap concrete construction quality control measures of the bridge,and finally points out that： there is now temperature stress cracks occurring in the cushion cap surface casted.