摘要
鄂东长江大桥南塔下塔柱连接段截面尺寸为8 m×12 m×10 m,混凝土为C50,位于塔柱与下横梁的相接部位。由于结构尺寸大、混凝土强度等级高,为了确保工程质量,对此区域进行了大体积混凝土温度场及应力场仿真计算,并根据计算结果制定了合理的保温、温控措施。现场实测的温度分布值与理论计算值十分接近,由于温控得当,结构无明显裂缝产生,验证了理论计算模型、计算方法与温控措施的正确性,可为同类型工程提供参考。
A segment of pylon of Edong Bridge was constructed with the large volume of 8 m ×12 m × 10 m and C50 concrete. There is a temperature and stress gradient within the segment after concreting, which was caused by heat of hydration of cement. In order to avoid concrete cracking, the measurement has to be adopted according to the result of theoretical simulation analysis. It was proved that the theoretical analysis and temperature control are correct and effective through the comparison between the results of calculation and field temperature monitoring. The successful experience may be referred by other similar construction of large volume concrete.
出处
《结构工程师》
2009年第2期62-66,共5页
Structural Engineers
