高架橋梁懸臂工法是利用懸臂工作車作為橋面版澆置施築之媒介，懸臂工作車具有施工不受地形限制、減少橋梁墩柱及現場支撐使用數量等施工優點，使得懸臂工作車使用頻率高於其他橋梁施工工法。由於目前橋梁跨距愈來愈長，噸數愈來愈大，目前相關規範無法因應大型懸臂工作車施工安全需求，故針對懸臂工法施工安全進行探討。由勞委會職災資料顯示，懸臂工作車主要重大職災類型為倒崩塌，而後錨錠系統失效為災害發生首要原因。藉由歷年職災資料分析與現場訪視結果，並配合懸臂工作車施工安全危害評估技術，掌握懸臂工作車施工安全缺失與注意事項；並藉由ANSYS軟件分析懸臂工作車之主要構件，以掌握懸臂工作車之極限強度及受力模式，提供懸臂工作車作業相關單位參採。藉由本文提出之懸臂工作車安全性能研究，可提高施工現場安全及品質，並加強懸臂工作車作業重要構件與施工環境安全性之輔助參考基礎，以預防懸臂工作車之勞工傷亡職災發生。

Balanced cantilever method is a medium to utilize balanced cantilever as bridge construction. Balanced cantilever has the merits of being not restricted to any terrain, reducing the amount of piers and concrete shoring to make it much utilized than other methods. Due to span is longer and tonnage is heavier recently, relative regulations cannot respond to large-scale construction at present. To prevent casualties from operation of balanced cantilever, this research makes a study of safety performance of balanced cantilever method. According to the statistics of the council of labor affairs, the percentage of collapse incidents is higher than any other occupational incidents of balanced cantilever construction, and the primary root cause is the failure of rear anchorages. This research concludes flaws working notices by analyzing accidental cases and safety assessing of balanced cantileve. The finite element method is also used to evaluate the main parts of the balanced cantilever to confirm the limiting strengths and failure modes. All the results can be reference for all the related construction units. The research results about the performance of the balanced cantilever can be used to enhance the site safety and quality and can be used to enhance the safety of the important parts and environment of the balanced cantileveler construction, so the risk of occupational incidents can be reduced.