平陆运河企石枢纽工程混凝土预冷系统设计及应用  

Design and application of concrete precooling system for Pinglu Canal Qishi Hub Project

作　　者：吴凤亮 黄涛 郭丽莉 高小东 王喜才 WU Feng-liang;HUANG Tao;GUO Li-li;GAO Xiao-dong;WANG Xi-cai(CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300456,China;Power China Northwest Engineering Co.,Ltd.,Xi'an,Shaanxi 710065,China)

机构地区：[1]中交第一航务工程局有限公司,天津300461 [2]中国电建集团西北勘测设计研究院有限公司,陕西西安710065

出　　处：《中国港湾建设》2025年第4期98-102,共5页China Harbour Engineering

摘　　要：平陆运河是广西内河水运规划中重要的出海通道,航道建设中船闸和泄水闸等部位以大体积混凝土为主,实际施工中因温度控制不当,大体积混凝土很容易产生温度裂缝,应利用有效的温控技术预防大体积混凝土裂缝问题的出现。文章以平陆运河企石枢纽工程预冷混凝土生产系统为例,针对预冷混凝土出机口16益的温度控制要求,结合项目实际情况,从预冷方案比选、设备配置两方面进行研究,最终采取“骨料堆场降温+冷水拌和+加冰拌和+搅拌楼骨料仓风冷粗骨料”的预冷措施,实现预冷混凝土出机口温控要求的目的。经实践能够较好满足生产需求,可供类似水运工程参考借鉴。Pinglu canal is an important channel for navigation in the planning of inland river transportation in Guangxi.In the course of waterway construction,the lock and sluice are mainly made of mass concrete.Due to improper temperature control in actual construction,mass concrete is easy to produce temperature cracks.Effective temperature control technology should be used to prevent mass concrete cracks.Taking the precooled concrete production system of Pinglu Canal Qishi Hub Project as an example,according to the temperature control requirements of 16毅C at the precooling concrete outlet,the study was carried out from two aspects of precooling scheme comparison and equipment configuration combined with the actual conditions of the project.Finally,the precooling measures of"Air-cooled aggregate yard coolling+cold water mixing+ice chips mixing+Aircooled coarse aggregate in mixing plant aggregate bin"were adopted to realize the temperature control requirements of precooled concrete outlet.The practice can better meet the production demand,which can be used as a reference for similar water transport projects.

关 键 词：预冷混凝土 平陆运河 制冷楼 

分 类 号：U615[交通运输工程—船舶及航道工程]