特大桥承台大体积混凝土温度裂缝原因及控制

Reasons for temperature cracks in huge volumn concrete cushion cap of super-huge bridge and countermeasures

介绍了某特大桥承台大体积混凝土裂缝的特点及产生原因,对混凝土配合比设计、浇筑工艺等进行了论述,并对如何控制承台大体积混凝土温度裂缝提出了预防措施,以确保承台混凝土施工质量。

The paper introduces features and reasons of temperature cracks in huge volumn concrete cushion cap of super-huge bridge, it states the design of mix proportion and casting technique and .so on. It also proposes preventing measures for controlling temperature cracks in huge volumn concrete cushion cap of super-huge bridge, so as to assure construction quality of cushion cap concrete.