摘要
钢岔管作为电站厂房引水管道的重要组成部分,其稳定可靠的运行是整个引水管道乃至电站正常运行的关键。应力与变形是钢岔管水压试验过程监测的重点,同时是判定试验是否终止的重要依据。文章以某抽水蓄能电站埋藏式钢岔管水压试验为例,对两次水压试验过程进行了应力和变形监测,并对监测数据进行了对比分析。测试数据表明:大部分测点应力与变形监测值与试验压力呈良好的线性正相关关系,N10测点在升压阶段出现了应力下降的异常情况。两次水压试验中,试验压力为6.0 MPa时,钢岔管最大等效应力均超过应力限值,最终及时终止了试验,保证了钢岔管结构的安全,可为类似工程的实施提供参考。
As an important component of the water diversion pipeline in the power plant building,the stable andreliable operation of the steel bifurcation pipe is the key to the normal operation of the entire water diversion pipelineand even the power plant.Stress and deformation are the focus of monitoring the water pressure test process of steelbifurcation pipes,and they are also important criteria for determining whether the test is terminated.The article takesthe buried steel bifurcation water pressure test of a pumped storage power station as an example to monitor the stressand deformation during two water pressure tests,and compares and analyzes the monitoring data.The test data showsthat the stress and deformation monitoring values of most measuring points have a good linear positive correlation withthe test pressure,and the measuring point N10 showed an abnormal situation of stress decrease during the pressure risestage.In two water pressure tests,when the test pressure was 6.0 MPa,the maximum equivalent stress of the steelbifurcation exceeded the stress limit,and the test was terminated in a timely manner,which ensured the safety of thesteel bifurcation structure and provided references for similar engineering projects.
作者
王光旭
姜胜先
谭新
WANG Guangxu;JIANG Shengxian;TAN Xin(Changjiang River Scientific Research Institute of Changjiang Water Resources Commission,Wuhan Hubei,430010,China)
出处
《江西水利科技》
2025年第2期151-156,共6页
Jiangxi Hydraulic Science & Technology
基金
中央级公益性科研院所基本科研业务费项目(CKSF2023299/CQ)。
关键词
钢岔管
应力变形监测
水压试验
高强钢
Steel bifurcation pipe
Stress and deformation monitoring
Hydrostatic test
High strength steel
