Newsletter 高速鐵路簡訊 . 交通部高速鐵路工程局
機場捷運A7站體結構地震監測系統 The Earthquake Monitoring System on TIAA MRT System A7 Station Structure
監測系統配置說明。

機場捷運體育大學站(A7)位於桃園市龜山區文化一路,屬明挖覆蓋施工之地下車站,為掌握及監測地震對車站主體結構之影響,於車站月台層及穿堂層設置地震監測系統,藉由長期歷時監測資料之變化,研判相關結構特徵之長期力學行為及內部應力之變化,並作為車站結構安全之研判與維護之參考。
體育大學站(A7)之地震監測設備共裝設表面型加速度計4組、鋼筋應力計40個及混凝土應變計20個,104年7月20日土建工程驗收合格起計保固,保固期間廠商需辦理定期監測作業,監測頻率每月至少1次,本局捷工處於104年9月21日會同廠商、監造及桃園大眾捷運股份有限公司分別就鋼筋應力計、混凝土應變計各監測單元記錄其初始值;表面型加速度計係依擷取時之即時數據,若地震波加速度達25gal(震度4級)將立即啟動相關監測儀器並開始自動記錄。
廠商辦理定期監測提送之監測月報需記錄當月擷取數據及歷時資料,並就異常數據進行研判及分析,截至106年4月,各項監測結果均顯示所有儀器監測點無異常狀況。
本系統監測之相關結構物相對應之歷時反應紀錄資料,可回饋作為未來其他開發案之設計參考,並應用於後續A7站體結構安全之監測管理。

The National Taiwan Sport University Station (A7) is located on Wenhua 1st Road in Guishan Dist., Taoyuan City and is an underground station which adopted the cut and cover technique. In order to grasp and monitor the impact of the earthquake on the main structure of the station, the earthquake monitoring system is set up on the station platform and concourse floor. Long-term monitoring data changes were used to determine long-term mechanical behavior and internal stress changes of relevant structural characteristics and the information were used as reference for station structure safety and maintenance decisions.
The earthquake monitoring facilities in National Taiwan Sport University Station (A7) included 4 sets of surface type accelerometers, 40 reinforcement bar stress gauges and 20 concrete strain gauges. On Jul. 20, 2015, the civil engineering acceptance procedure was completed which initiated the warranty phase. During the warranty period, the contractor is required to carry out regular monitoring operations with the frequency of at least once a month. On Sep. 21, 2015, the MRT Engineering Office met with the contractor, supervisor and Taoyuan Metro Corp. to record the initial value of the reinforcement bar stress gauges and concrete strain gauges; for the surface accelerometer, its value is based on real-time data. If the seismic wave acceleration reaches 25gal (intensity 4), the accelerometer will immediately initiate relevant monitoring equipment and start automatic recording.
The supervisory monthly report of the contractor shall record monthly captured data and history log and the abnormal data shall be judged and analyzed. As of April 2017, the monitoring results showed that all instrument monitoring points were normal without exception.
The corresponding response data of relevant structure from the monitoring system can be fed back as the reference of future development designs and applied to follow-up structure security monitoring and management of A7 station.

  • 設置於穿堂層頂版之表面型加速度計。
  • 混凝土應變計106 年3 月份監測歷時曲線圖。
  • 監測資料擷取及定期維護作業。
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