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    1. PLC同步頂升系統用于重慶北坡橋橋梁隱患整改工程
      發布日期:2020/7/10 10:35:05 訪問量: 字號 A- A A+
      • 應用領域:橋梁頂升維修
      • 使用設備:智能控制同步頂升液壓系統
      橋梁支座老化急需更換
      (橋梁支座老化急需更換)

      這是一個關于老舊橋梁同步頂升抬高更換失效支座的案例。使用設備江蘇凱恩特薄型液壓千斤頂、PLC同步頂升系統。

      橋墩加固,通過液壓千斤頂同步頂升更換支座
      (橋墩加固,通過液壓千斤頂同步頂升更換支座)


      重慶北坡橋,原橋于1979年底建成通車,橋長55米,全寬46米,結構形式為四座獨立的四跨鋼筋混凝土連續箱梁。該橋已運行三十一年,位處市區交通量大且超重、超載車輛眾多。

      主橋墩同步頂升更換支座
      (主橋墩同步頂升更換支座)


      經當地百姓反映,該橋的東側輔橋在重車通過時存在上下顛簸、左右晃動的情況,與路面高差最大達到約8cm。經過進一步檢查發現,北側輔道橋兩端橋臺支座存在老化變形、部分脫空等病害,已失去正常支撐功能,中央主橋及西側輔道橋也有類似病害,威脅橋梁結構和行車安全。因此需立即對橋段進行封閉,確保橋梁使用和車輛通行安全。

      橋梁更換破舊橡膠支座
      橋梁更換破舊橡膠支座


      經過工程組的考察,確定了對該橋梁支座更換方案。首先通過對橋梁橋墩進行整體加固,再通過放置與橋墩上的液壓千斤頂將橋梁整體頂升,完成輔道橋的支座更換及主橋梁體抬升工作,預期工程30天輔道橋通行,再封閉主橋,最后完成主橋支座更換及附屬工程恢復工作。通過江蘇凱恩特提供的的同步頂升系統,該橋最終成功實現整體頂升,梁體的位移、應力均未發生異常。

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