大型“U”形薄壁渡槽安全监测及工作性态分析  

Safety Monitoring and Operational Behavior Analysis of Large-sized U-shaped Thin-wall Aqueduct

作　　者：张文胜 吴德绪 李红霞 周学友[3] 

机构地区：[1]长江勘测规划设计研究院,武汉430010 [2]葛洲坝测绘地理信息技术公司,湖北省宜昌市443133 [3]南水北调中线干线工程建设管理局渠首分局,河南省南阳市473000

出　　处：《西北水电》2016年第6期48-51,共4页Northwest Hydropower

摘　　要：为了检验"U"形渡槽工作性态,布置了较全面原型监测仪器。通过某"U"形渡槽施工期、充水试验期、通水运行初期安全监测与成果分析,证明"U"形渡槽槽体抗裂性和刚度较好,渡槽整体工作性态正常,也验证前期勘测与设计是合理的。同时,监测成果也反映出浇筑期间,薄壁渡槽槽体温度应力不容忽视,易形成初始应力,对结构安全不利,施工中进行措施控制是必要的。The full prototype monitoring instruments are arranged for the inspection of the operational behavior of the U-shaped aqueduct. Through the initial safety monitoring and the monitoring result analysis of one U-shaped aqueduct during its construction, water-filling tests and flowing operation, it proves that both crack resistance and rigidity of the aqueduct body are satisfied. The aqueduct wholly operational behavior is normal. This also verifies both investigation and design are rational. Meanwhile, the monitoring results present that the temperature stress of the aqueduct body during its concrete placement cannot be ignored because the initial stress is easily caused, which endangers structural safety and shall be controlled necessarily during the aqueduct construction.

关 键 词：南水北调 薄壁渡槽 安全监测 工作性态分析 

分 类 号：TU45[建筑科学—岩土工程] TV223.31[建筑科学—土工工程]