张泾河泵闸大体积混凝土精细化温控研究

Study on Fine Temperature Control of Mass Concrete for Zhangjing River Pump and Sluice Project

摘要:

以上海市张泾河泵闸工程为例，从材料性能、通水冷却及保温、温控监测等方面探讨了泵闸工程大体积混凝土施工期精细化温控防裂技术。通过室内试验及现场大体积混凝土试验获得仿真分析所需的材料热力学参数及表面散热系数，并用于现场混凝土温度场的反馈分析。最后对比分析了通水流量及冷却水管规格对混凝土温度场的影响，结果显示管材及管径对混凝土最高温度及温降速率有较大影响，建议早期采用管径40 mm以上钢管及4 m3/h以上冷却水流量。

Abstract:

Based on the consideration of participating in the rural revitalization construction project, the types and selection requirements of the current rural road pavement structure are analyzed. Combined with the actual needs and construction conditions of the countryside, the typical structure of the rural road pavement is put forward so as to provide the reference for the selection and construction of the rural road pavement structure.