鋼構組立作業的施工環境複雜且充滿危機，在施工前需要充分的安全規劃與安全培訓才能避免危險的發生。鋼構組立作業最常見的施工危害為墜落，造成墜落的主因是未使用個人護具、未正確使用護具與立足處不足。為了防範墜落的發生，我國規範針對可能發生墜落之情況訂定了相關的規定，但制定再多的法規只是防範意外的最後一道防線，如何防患未然成了最大考驗。根據造成墜落的主因進行分析可以發現，對於安全護具的使用應從加強施工者的安全防護意識開始做起，施工者隨時提高警覺並且有足夠的安全意識才能主動的預防危害的發生。其次造成墜落的原因為立足空間不足，立足空間與事前的施工安全規劃息息相關，如何在施工前充分了解施工空間並逕行安全規劃成了重要課題。
　　現今的安全培訓大多停留在傳統的課堂授課與紙本測驗，缺乏實際的培訓機會，如今科技發展迅速，虛擬實境的設備不斷進步，能提供高度擬真的虛擬環境，利用虛擬實境可忽略風險進行情境培訓與低成本的特性，正巧適合用於安全培訓，能在確保使用者安全無虞的情況下進行安全培訓。現今虛擬實境培訓系統發展蓬勃，但是對於數據的蒐集應用是較少的，不容易判斷受試者的活動意圖，且受試者不容易拿到培訓上的回饋。
　　為了解決上述的問題，本研究首先透過專家訪談與IDEF0方法解析鋼構組立作業之安全培訓系統所需培訓需求，建置符合培訓之模型環境與所需之安全設備工具模型，並撰寫腳本使得模型能夠運行並依照培訓流程執行預設的內容，接著賦予模型和人之間的互動機制，使得使用者能夠操控區擬世界中的物體，完成一連串的設定後，便可設定系統自動記錄想取得的任何培訓數據。
　　本研究所開發之鋼構組立作業培訓系統能提供受試者模擬鋼構組立作業時的情境，透過虛擬按鈕可以對欲吊裝之桁架進行高程調整，此為本培訓最重要的環節，在此環節裡受試者需要對桁架進行觀察、調整捲揚器並同時注意腳下安全以防墜落，在測試結束後將提供受試者即時的培訓結果回饋與視覺化的檢討方法，透過上述的培訓內容能夠提升受試者的觀察力、捲揚器操作能力與隨時保持警戒心。此外，在執行此培訓前，受試者需要能夠正確的辨識安全裝備與工具，並正確的裝設安全護具，透過實際的操作能加深學習印象、提升安全意識。
　　本培訓系統能記錄受試者的培訓軌跡、施工活動與發生危險的時機點，可用於分析施工時的路徑偏好、操作策略與發現容易發生施工危害之區域，理解路徑偏好與危害潛勢區能夠及早對該區域加強安全防護；操作策略則可以協助了解施工的操作技巧。綜觀上述，本研究所開發之虛擬實境鋼構組立作業培訓系統能提供有效的培訓，並且給予受試者與施工安全規劃有力的回饋資訊。

Steel structure assembling operation was a hazardous task with complex surroundings, and the most seen accident during the task was "falling." Despite many relative regulations, it still required the constructors to raise safety consciousness and be more alert to prevent danger happened Initiative. Besides, the standing space and construction safety planning were also critical elements in danger prevention. Nowadays, many Virtual Reality training systems were invented, which had the characteristic of low cost and training without facing any danger, providing a better training environment. However, only a few emphasized instant feedbacks and trajectory data analysis. Training feedback could provide better ways to learn, while trajectory data could help understand the participants' situation and reference future safety planning.
This research would develop a Virtual Reality training system based on steel structure assembling operation. The participants had to recognize the tools and safety equipment in need and used them correctly. In addition, they had to make sure that the trusses were able to connect smoothly by adjusting the height of the trusses using a winch. The participants could know the results immediately after the training and carry on reviewing themselves. The operation and trajectory would be recorded and further analyzed for the trajectory preference, operation strategies, and discovering the hazardous area among the construction sites. Furthermore, the empirical analyses suggested that the training system developed in this research could provide better training feedback and analyze the trajectory information, giving more references, lowering the dangerous occurrence.

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