严智宇1,孔艺达2,谢皓宇3,4,凤玉波5,廖佳丽6
严智宇,孔艺达,谢皓宇,等.空间异形大体积混凝土水化热研究与分析[J].混凝土与水泥制品,2025(2):26-31.
YAN Z Y,KONG Y D,XIE H Y,et al.Research and analysis of hydration heat of space shaped mass concrete[J].China Concrete and Cement Products,2025(2):26-31.
空间异形大体积混凝土水化热研究与分析
严智宇1,孔艺达2,谢皓宇3,4,凤玉波5,廖佳丽6
严智宇,孔艺达,谢皓宇,等.空间异形大体积混凝土水化热研究与分析[J].混凝土与水泥制品,2025(2):26-31.
YAN Z Y,KONG Y D,XIE H Y,et al.Research and analysis of hydration heat of space shaped mass concrete[J].China Concrete and Cement Products,2025(2):26-31.
摘 要:以某悬索桥工程为背景,建立承台、下塔柱一、二节段3个有限元模型,对该空间异形大体积混凝土进行了现场实测数据与数值仿真计算分析,并通过设置冷却水管、调整入模温度、改变温度传感器安装位置研究了大体积混凝土的水化放热过程。结果表明:布置冷却水管能够有效降低混凝土的峰值温度;降低入模温度,混凝土的峰值温度随之降低;中心位置处布置温度传感器能够较好地反应混凝土内部的温度变化情况;有限元模拟结果与实测结果吻合良好。
Abstract: Taking a suspension bridge project as the background, 3 finite element models were established for the cushion cap and the first and second sections of the lower tower column. On site measurement data and numerical simulation analysis were conducted on the space shaped mass concrete. The hydration heat release process of the mass concrete was studied by setting cooling water pipes, adjusting the mold temperature, and changing the installation position of temperature sensors. The results indicate that arranging cooling water pipes can effectively reduce the peak temperature of concrete. Lowering the molding temperature can also lower the peak temperature of the concrete. Placing a temperature sensor at the center position can effectively reflect the temperature changes inside the concrete. The finite element simulation results are in good agreement with the measured results.
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