基于单一通水方向的泵站底板水管冷却方案研究  

Research on water pipe cooling scheme for pumping station bottom plate based on single water-flow direction

作　　者：段炼 DUAN Lian(Shanghai Municipal Engineering Design and Institute(Group)Co.,Ltd.,Shanghai 200092,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《人民长江》2023年第11期139-144,151,共7页Yangtze River

基　　金：上海市政工程设计研究总院(集团)有限公司科研项目(K2021J014)。

摘　　要：水管通水冷却是大体积混凝土主要的温控措施,交替变换冷却水通水方向虽降温效果更好,但需要耗费较多人力物力,实际施工中仍可能采用单一方向通水。针对该情况,结合上海市前卫泵闸工程,采用热流耦合精细算法模拟不同的水管布置型式及底板浇筑方式下泵房底板混凝土的冷却效果。仿真结果表明:不改变通水方向时,“双循环”水管布置型式能解决传统“单循环”水管布置型式下底板温度梯度较大的问题;采用分块浇筑措施,结构温度梯度小,新老混凝土接合面拉应力偏大。单一通水方向工况下,建议采用“双循环”水管布置型式以及合理分块浇筑,研究成果可为类似工程中的泵站底板温控工作提供参考。For mass concrete,water pipe cooling is a main temperature control measure.Alternately changing the direction of cooling water has the best cooling effect,but it often requires more manpower and material resources.So in actual construction,it is still possible to use a single direction of water-flow cooling.In view of this situation,combined with the Qianwei Pump-Gate Project in Shanghai City,the heat-flow coupling algorithm was used to simulate the cooling effect of cooling water on the bottom plate concrete of the pump house under different water pipe layouts and floor pouring methods.The simulation results showed that the‘double circulation'water pipe layout could reduce the large temperature gradient of the bottom plate,while the traditional‘single circulation'water pipe layout couldn't solve this problem.By block pouring,the temperature gradient of the structure was small,and the tensile stress of the new and old concrete joint surface was too large.Under the condition of single water-flow direction,it was suggested to adopt the‘double circulation'water pipe layout and reasonable block pouring plan.The research results can provide reference for the temperature control of bottom plate of pump stations.

关 键 词：温控防裂 冷却水管 通水方向 分块浇筑 

分 类 号：TV642[水利工程—水利水电工程]