马岭河特大桥承台温度控制方案

The Blue Print of Controlling the Temperature of the Eighth Hold Pedestal on Super Malinghe Bridge

大体积砼须采取相应技术措施妥善处理内外温差,合理解决温度应力并控制裂缝。介绍了在塔座施工中采取的温度控制措施、实施过程及效果,并结合实际观测数据对大体积砼施工通过外掺剂的使用,优化砼原材料,优化砼配合比等措施更好地掌握用山砂施工大体积砼。

For big cubage concretes construction, some relevant technical measures should be adopted to appropriately deal with the difference in temperatures inside and outside, so as to solve the problem of temperature stress and control the crevice. Firstly, in this essay, the writer introduces shortly the adopted temperature control measures in hold pedestal construction, the process of actualization, and the effect. Then, according to the practical observation data, the writer puts forward some other measures such as optimizing now concrete materials and the associated concrete proportion with the use of the additive, so as to better master the way of big cubage concretes construction with sand.