大体积混凝土红外测温影响因素研究与工程应用  

Engineering application and factors affecting infrared temperature measurements of mass concrete surfaces

作　　者：乔雨 杨宁 谭鹏 彭浩洋 吴卫 周大建 王潇楠 QIAO Yu;YANG Ning;TAN Peng;PENG Haoyang;WU Wei;ZHOU Dajian;WANG Xiaonan(China Three Gorges Projects Development Co.,Ltd.,Chengdu 610041,China;Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China;Zhejiang Dahua System Engineering Co.,Ltd.,Hangzhou 310000,China)

机构地区：[1]中国三峡建设管理有限公司,成都610041 [2]清华大学水利水电工程系,北京100084 [3]浙江大华系统工程有限公司,杭州310000

出　　处：《清华大学学报（自然科学版）》2021年第7期730-737,共8页Journal of Tsinghua University(Science and Technology)

基　　金：中国长江三峡集团有限公司科研项目(WDD/0491,WDD/0490)。

摘　　要：开展大坝混凝土浇筑过程非接触红外热成像温度监测(红外测温)研究对于混凝土温度监测和施工过程中温控措施调控具有重要意义。该文基于红外热成像原理,建立了大坝混凝土表面红外辐射量、有效温度采集算法;通过开展不同环境温度、距离对红外测温精度的影响试验,修正了红外测温基本模型;并研发了复杂环境下特高拱坝混凝土出机口、入仓和浇筑等施工全过程红外测温系统。通过乌东德现场应用验证,实现了混凝土生产、运输、浇筑全过程的实时、在线、精准温度监测;为大坝工作性态分析提供了连续、真实的温度场等边界参数。研究成果可为其他同类工程温度在线监测提供参考与借鉴。Dam concrete pouring needs accurate non-contact infrared temperature measurements and temperature control.This paper presents an infrared temperature measurement algorithm for dam concrete surfaces based on concrete surface temperature measurements for various ambient temperatures at various distances.The algorithm was then applied to an infrared concrete temperature measurement system for super-high arch dams in complex environments.The tests show that this system provides accurate,real-time,and on-line temperature monitoring of the concrete production,transport and pouring at a site test in the Wudongde Hydropower Station.The system provides continuous boundary conditions including the temperatures for analyzing the dam characteristics.The study results provide a reference for on-line temperature monitoring of similar engineering systems.

关 键 词：红外热成像 温度监测 混凝土 特高拱坝 

分 类 号：TV39[水利工程—水工结构工程]