摘要
安徽蚌埠某跨越淮河斜拉桥，主桥20#墩承台为水下承台。承台直径达26m，体积较大。大体积混泥土水化过程产生较大的热量，承台可能由于内外温差过大而开裂。为防止承台开裂，在施工中进行了温度监控。参考有限元仿真计算的结果，根据监控结果采取了适当的措施，成功的防止了承台开裂。
Abstract
One cable-stayed bridge across huaihe river in Bengbu anhui province,the 20th pier pile cap is underwater.The diameter of the pile cap reaches 26m,thus the volume of the pile cap is very big. Greater heat will be produced by the massive concrete hydration process. Due to the large temperature difference between inside and outside of the pile cap, cracking maybe come into being.In order to prevent cap cracking,construction monitoring is used. Reference the result of finite element simulation, appropriate measures is taken according to the results of the monitoring,prevent cap cracking is succesful.
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