{"id":8630,"date":"2026-07-27T10:51:26","date_gmt":"2026-07-27T02:51:26","guid":{"rendered":"https:\/\/www.wtauserver.com\/?p=8630"},"modified":"2026-07-27T10:51:26","modified_gmt":"2026-07-27T02:51:26","slug":"online-monitoring-system-for-gate-hydraulic-steel-structures","status":"publish","type":"post","link":"https:\/\/www.wtauserver.com\/en\/online-monitoring-system-for-gate-hydraulic-steel-structures\/","title":{"rendered":"Online monitoring system for gate metal structure\uff5cFull analysis of monitoring content, structure classification, and testing specifications"},"content":{"rendered":"
\n
The steel gates of water conservancy and hydropower, pumping stations, and ship locks are immersed in water bodies for a long time, and can withstand the impact of upstream and downstream water pressure, water erosion, alternating dry and wet corrosion, and sediment friction all year round, accompanied by opening and closing vibration and temperature stress changes. Metal components such as the main beam, side beam, support arm, and water stop buried parts of the gate are extremely prone to hidden dangers such as excessive stress, deformation and displacement, corrosion and aging, and cracking of welds. Traditional gate inspection relies on annual shutdown, manual flaw detection, and naked-eye inspection. The frequency of inspections is low, underwater parts are difficult to investigate, and minor structural damage cannot be found in time. Once the metal structure fails, the gate will be deformed and leaky, and the opening and closing will be stuck. In severe cases, it will cause major water conservancy safety accidents such as water collapse and flood control failure.<\/div>\n<\/div>\n
\n
Online monitoring system of gate metal structure<\/strong>It is an all-weather intelligent control platform built for hydraulic steel gates, relying on underwater corrosion-resistant sensors, wireless transmission and cloud platform to achieve 24-hour uninterrupted automated monitoring. Water conservancy operation and maintenance personnel selection, operation and maintenance personnel searchOnline monitoring system of gate metal structure<\/a>What are there and what is the main monitoring content of online gate monitoring? At the same time, check the type of gate structure, gate testing specifications, and hydraulic metal gate testing standards to clarify whether the gate is a metal structure or mechanical and electrical equipment and other basic issues. This article combines search keywords to complete the disassembly of system composition, monitoring projects, gate structure knowledge, testing specifications and landing applications, and provides a complete reference for the digital operation and maintenance of water conservancy projects.<\/div>\n
\"Online<\/div>\n<\/div>\n
\n

1. Definition of basic concepts: does the gate belong to a metal structure or mechanical and electrical equipment?<\/h2>\n<\/div>\n
\n
The hydraulic gate as a whole is a composite facility, and the main body is clearly divided.\uff1a<\/div>\n<\/div>\n
\n
    \n
  1. The main body of the gate body is classified as a hydraulic metal structure<\/strong>: Steel load-bearing components such as panels, main beams, secondary beams, side columns, lugs, support hinges, and water stop frames belong to the category of water conservancy metal structures and are also the main monitoring objects of the online monitoring system of gate metal structures.<\/li>\n
  2. The hoist, wire rope, hydraulic cylinder, and electric control cabinet belong to mechanical and electrical equipment.<\/strong>: Responsible for driving the lifting, opening and closing of the gate. It is not a metal structure. Conventional metal structure monitoring is only used as a linkage reference and is not used as a core monitoring point.<\/li>\n<\/ol>\n<\/div>\n
    \n
    Simple division: the steel door body carrying the water retaining is a metal structure; the power unit responsible for pulling the gate is mechanical and electrical equipment, and the control and monitoring specifications of the two are independent of each other.<\/div>\n
    <\/div>\n<\/div>\n
    \n

    2, the mainstream gate structure type adaptation monitoring plan<\/h2>\n

    \"Online<\/p>\n<\/div>\n

    \n
    The force characteristics of different gate structure types vary greatly, and the online monitoring system of the gate metal structure requires targeted deployment of sensors, and the classification of common hydraulic gates is very important.\uff1a<\/div>\n<\/div>\n
    \n
      \n
    1. Flat steel gate<\/strong>: The most widely used, including direct-lift, sliding, and roller type, the transverse pressure of the main beam is mainly, focusing on monitoring the stress of the main beam, the vertical settlement of the door body, and the deformation of the roller support hinge.<\/li>\n
    2. Curved gate<\/strong>: Relying on the arc pressure of the arm, the impact force of the water flow is concentrated on the arm and the hinge, and the monitoring focus is on the stress of the arm, the displacement of the hinge, and the radial deformation of the arc door.<\/li>\n
    3. Herringbone gate (for locks)<\/strong>: Two-way compression, focusing on the monitoring of the opening and closing displacement of the door seam, the butt stress of the door leaf, and the wear and displacement of the bottom pivot and the top pivot.<\/li>\n
    4. Flap gate, fast gate<\/strong>: The opening and closing frequency of moving water is high, and the vibration fatigue is obvious. Long-term monitoring of vibration and fatigue stress is added.<\/li>\n<\/ol>\n<\/div>\n
      \n
      According to the schematic diagram of the gate structure and the drawings of the internal structure of the gate, the location of the sensor distribution point can be accurately planned to avoid the motion interference areas such as water stop, roller, opening and closing spreader, etc.<\/div>\n
      <\/div>\n<\/div>\n
      \n

      3. The main monitoring content of online gate monitoring<\/h2>\n<\/div>\n
      \n
      The complete set of online monitoring system for the metal structure of the gate sets up a multi-dimensional monitoring module around the safety of the metal structure, which completely covers the full dimensions of structural force, deformation, corrosion, environment, and opening and closing. It is also the core digital index of gate inspection.\uff1a<\/div>\n<\/div>\n
      \n

      1. Structural stress monitoring<\/h3>\n<\/div>\n
      \n
      Paste strain sensors at key stress positions such as the main beam, support arms, welds, and lugs to collect stress values of metal components under water pressure loads in real time, identify stress overload and fatigue damage, and record the number of stress cycles for a long time to predict the risk of metal fatigue cracking.<\/div>\n<\/div>\n
      \n

      2. Displacement and deformation monitoring<\/h3>\n<\/div>\n
      \n
      GNSS, inclination angle, and cable displacement sensors are used to monitor: the overall vertical settlement of the gate, the horizontal offset, and the concave-convex deformation of the panel; the movement of the curved gate support hinge, and the deviation of the opening and closing degree of the door leaf; the opening and closing displacement of the herringbone gate butt joint accurately captures the structural deformation.<\/div>\n<\/div>\n
      \n

      3. Corrosion and temperature and humidity monitoring<\/h3>\n<\/div>\n
      \n
      Corrosion sensors are arranged underwater and in water level change areas to monitor the corrosion rate of steel structures; the ambient temperature, humidity, and dissolved oxygen of water bodies are collected simultaneously, and the development rate of corrosion caused by alternating dry and wet water quality is analyzed, and the operation and maintenance personnel are assisted in formulating anti-corrosion and rust removal plans.<\/div>\n<\/div>\n
      \n

      4. Health monitoring of support hinge\/roller<\/h3>\n<\/div>\n
      \n
      For the walking rollers of arc door hinges and plane gates, the bearing vibration, temperature, displacement and wear are monitored, and the deformation of the pin shaft is warned of stagnation, partial wear, and pin shaft deformation, so as to avoid additional structural forces caused by opening and closing caton.<\/div>\n<\/div>\n
      \n

      5. Water flow load and vibration monitoring<\/h3>\n<\/div>\n
      \n
      Set up water pressure and vibration sensors to record the pressure loads under different water levels, capture the resonance vibration caused by high-speed spillage and the opening and closing of the flood gates, and prevent the vibration from causing fatigue and fracture of the welds.<\/div>\n<\/div>\n
      \n

      6. Video visualization review<\/h3>\n<\/div>\n
      \n
      With underwater high-definition cameras and shore monitoring, it can visually check the corrosion of the gate panel, damaged welds, water-stopping rubber falling off, and debris stuck, and realize the dual verification of data monitoring and screen.<\/div>\n
      <\/div>\n<\/div>\n
      \n

      4. What are the mainstream hardware components of the online monitoring system of the gate metal structure?<\/h2>\n<\/div>\n
      \n
      The complete system is divided into a four-layer structure, which is suitable for outdoor and underwater humid and corrosive water conservancy environments.\uff1a<\/div>\n<\/div>\n
      \n
        \n
      1. Front-end perception sensor layer<\/strong>: Anticorrosive strain gauges, displacement gauges, inclination sensors, corrosion probes, and water pressure sensors are all packaged in waterproof and anticorrosive packages, which can be immersed underwater for a long time.<\/li>\n
      2. On-site acquisition control layer<\/strong>: Outdoor waterproof acquisition control cabinet, aggregates all sensor signals, caches data locally, and adapts to outdoor scenes without electricity and solar power supply.<\/li>\n
      3. Data transmission layer<\/strong>: It adopts 4G\/5G, optical fiber, and LoRa multi-mode transmission to adapt to the signal environment of reservoirs and remote pumping stations to ensure stable data return.<\/li>\n
      4. Cloud management platform layer<\/strong>: Computer Web terminal and mobile phone applet, summarize the monitoring data of the whole gate, and automatically generate daily and monthly reports; sound, light and SMS warnings of stress and deformation exceeding the standard are graded, and full-cycle data is retained to meet the requirements of gate detection and archiving.<\/li>\n<\/ol>\n

         <\/p>\n<\/div>\n

        \n

        5. Requirements for gate inspection, hydraulic metal gate testing and gate inspection specifications<\/h2>\n<\/div>\n
        \n

        (1) Conventional manual gate inspection and classification<\/h3>\n<\/div>\n
        \n
          \n
        1. Daily inspection<\/strong>:Monthly visual inspection of panel corrosion, welds, water stop, and roller appearance\uff1b<\/li>\n
        2. Regular and comprehensive testing<\/strong>: In accordance with water conservancy specifications, a comprehensive shutdown inspection is carried out every 3 to 5 years, including wall thickness measurement, weld flaw detection, and hinge wear measurement.\uff1b<\/li>\n
        3. Special inspection<\/strong>: After the flood season, after major floods, and after major repairs of the floodgates, special stress deformation retest will be carried out.<\/li>\n<\/ol>\n<\/div>\n
          \n

          (2) Supporting requirements for hydraulic metal gate test<\/h3>\n<\/div>\n
          \n
          After the gate is newly manufactured, overhauled and transformed, hydraulic metal gate tests must be carried out: static water pressure test, opening and closing dynamic water test, sealing test, and simultaneous access to the online monitoring system to record the stress and displacement data of the whole process of the test to verify that the structural strength is up to standard.<\/div>\n<\/div>\n
          \n

          (3) The core basis of the general gate inspection specification<\/h3>\n<\/div>\n
          \n
          Monitoring and testing operations strictly follow water conservancy industry standards\uff1a<\/div>\n<\/div>\n
          \n
            \n
          1. SL 101 Hydraulic steel gate manufacturing, installation and acceptance specifications\uff1b<\/li>\n
          2. SL 705 Hydraulic metal structure safety inspection regulations\uff1b\n
            <\/div>\n

            The specification clearly requires that large and important reservoirs, spillways, and ship locks must be equipped with online monitoring systems to replace some high-frequency manual inspections, and all monitoring records and inspection reports should be kept and archived as the basis for water conservancy safety rating and risk reduction reinforcement.<\/li>\n<\/ol>\n

             <\/p>\n<\/div>\n

            \n

            6. The value of system landing and application<\/h2>\n<\/div>\n
            \n
              \n
            1. Fill in the blind spots of manual detection and build the bottom line of flood control safety<\/strong>\n
              <\/div>\n

              Underwater components and areas submerged all year round cannot be detected at close range manually, and online monitoring is on duty continuously for 7\u00d724 hours. During the flood season, high water levels can be mastered without stopping the water, and the risk of cracking, deformation, and leakage can be warned in advance to ensure the safety of flood control, water supply, and shipping.<\/li>\n

            2. Reduce operation and maintenance inspection costs and optimize maintenance cycles<\/strong>\n
              <\/div>\n

              There is no need to repeatedly stop the water and empty the warehouse area to carry out large-scale manual flaw detection, relying on monitoring data to accurately locate corrosion and stress anomalies, to achieve fixed-point targeted maintenance, and reduce the loss of water resources and production water outages caused by venting and storage.<\/li>\n

            3. Digital ledger for the whole life cycle, convenient for compliance and inspection<\/strong>\n
              <\/div>\n

              The system automatically aggregates all monitoring and test data, and exports reports that meet the inspection specifications of the gate with one click. It can easily pass the annual safety inspections of the competent water conservancy departments and the flood prevention office, and improve the whole life cycle files of the gate metal structure.<\/li>\n

            4. Guide anti-corrosion and structural reinforcement plans<\/strong>\n
              <\/div>\n

              Through long-term corrosion and stress data changes, the corrosion development speed and fatigue risk are accurately judged, and the sandblasting and rust removal, heavy anticorrosive coating, and structural reinforcement and reinforcement plans are scientifically formulated to avoid the waste of funds caused by blind overhaul.<\/li>\n<\/ol>\n

               <\/p>\n<\/div>\n

              \n

              7, summary<\/h2>\n<\/div>\n
              \n
              The online monitoring system of the metal structure of the gate is the core facility of the intelligent operation and maintenance of the metal structure of the water conservancy and hydraulic engineering. It can be adapted to various types of gate structures such as flat gates, curved gates, and herringbone gates. The operator needs to distinguish that the gate belongs to a metal structure rather than mechanical and electrical equipment. The online monitoring of the gate mainly monitors the core contents of stress, deformation, corrosion, hinge wear, and water flow vibration.<\/div>\n<\/div>\n
              \n
              Daily operation and maintenance combined with gate inspection specifications, regular hydraulic metal gate tests are carried out, with online automated monitoring and offline manual sampling, and dual online and offline control. Whether it is a new water conservancy project or the risk-removing reinforcement of old gates, the deployment of a standardized gate metal structure online monitoring system can not only solve the difficulties of underwater inspection and the pain points of lagging in the discovery of hidden dangers, but also meet the requirements of water conservancy compliance and control, and ensure the long-term safe and stable operation of various types of hydraulic gates.<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

              \u6c34\u5229\u6c34\u7535\u3001\u6cf5\u7ad9\u3001\u8239\u95f8\u7684\u94a2\u5236\u95f8\u95e8\u957f\u671f\u6d78\u6ce1\u5728\u6c34\u4f53\u4e2d\uff0c\u5e38\u5e74\u627f\u53d7\u4e0a\u4e0b\u6e38\u6c34\u538b\u51b2\u51fb\u3001\u6c34\u6d41\u51b2\u5237\u3001\u5e72\u6e7f\u4ea4\u66ff\u8150\u8680\u3001\u6ce5\u6c99\u6469\u64e6\uff0c\u4f34\u968f […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97],"tags":[],"class_list":["post-8630","post","type-post","status-publish","format-standard","hentry","category-technical-support"],"_links":{"self":[{"href":"https:\/\/www.wtauserver.com\/en\/wp-json\/wp\/v2\/posts\/8630","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wtauserver.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wtauserver.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wtauserver.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wtauserver.com\/en\/wp-json\/wp\/v2\/comments?post=8630"}],"version-history":[{"count":1,"href":"https:\/\/www.wtauserver.com\/en\/wp-json\/wp\/v2\/posts\/8630\/revisions"}],"predecessor-version":[{"id":8632,"href":"https:\/\/www.wtauserver.com\/en\/wp-json\/wp\/v2\/posts\/8630\/revisions\/8632"}],"wp:attachment":[{"href":"https:\/\/www.wtauserver.com\/en\/wp-json\/wp\/v2\/media?parent=8630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wtauserver.com\/en\/wp-json\/wp\/v2\/categories?post=8630"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wtauserver.com\/en\/wp-json\/wp\/v2\/tags?post=8630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}