大型三维混凝土结构温度场的光纤监测技术  

Optical Monitoring Technology for Three-Dimensional Temperature Field of Big-sized Concrete Structure

作　　者：蔡德所[1] 何薪基[1] 蔡顺德[1] 张存吉 

机构地区：[1]三峡大学土木水电学院,湖北宜昌443002 [2]广西壮族自治区水利厅,南宁530023

出　　处：《三峡大学学报（自然科学版）》2005年第2期97-100,共4页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金资助项目(59879002);国家电力公司重大项目(SPKJ007209);国家"948"项目(200109)

摘　　要：以中国广西红水河乐滩水电站工程为背景、以光纤分布式温度测量系统为手段,研究了3号机组常态混凝土浇筑过程混凝土结构三维温度场的变化.首先,验证了光纤分布式温度测量系统成果的可靠性和准确性;其次,埋设不锈钢铠装传感光缆2km,共10个不同高程的层面,研究了常态混凝土水化热的释放过程、冷却水管的作用效果、温度随混凝土浇筑层厚度等的变化而变化的规律.Based on the Letan hydropower project over the Hongshui River in Guangxi Province, China, this paper, with the help of distributed fiber optical sensing system, studies the variation of the three-dimensional temperature field in concrete structure during the normal concreting course in Unit 3 of the hydropower station. Firstly, it verifies in this paper the reliability and accuracy of the results measured by the distributed fiber optical sensing system. Secondly, since 2000 meters of stainless steel armored sensing cable has been embedded in ten lifts of different elevation, a study is made on the dissipation of normal concrete hydration heat, the effectiveness of cooling pipes and the changing mechanism of temperature with the lift thickness of concrete.

关 键 词：混凝土结构 光纤监测技术 分布式温度测量系统 混凝土水化热 水电站工程 三维温度场 常态混凝土 中国广西 浇筑过程 3号机组 释放过程 作用效果 冷却水管 红水河 准确性 可靠性 不锈钢 浇筑层 

分 类 号：TV7[水利工程—水利水电工程] TU375[建筑科学—结构工程]