預力混凝土常用於橋梁工程，本論文以高雄港聯外道路為案例，探討使用外置預力鋼腱預鑄節塊箱梁之端隔梁錨碇區與轉向塊之傳力行為，本研究使用ANSYS有限元素軟體建立端隔梁以及轉向塊之分析模型，依照實際施拉預力順序，根據每一鋼腱之錨碇區最大應力路徑，藉以分析爆裂力以及轉向力，據此爆裂力以及轉向力，設計防爆鋼筋以及轉向塊鞍座的箍筋並與案例實際配筋量比較。
分析結果，可發現分析的需要配筋量與案例值有合理關係，分析的爆裂曲線趨勢符合Guyon理論，案例值為分析值的1.7倍，垂直鋼筋案例量為分析值的1.1倍，加強型鞍座可有效降低轉向塊所受應力，標準型轉向塊鞍座的分析值為加強型鞍座的分析值的1.12倍，可得知加強型鞍座可降低鋼筋量，並可加勁腹板與鞍座，案例之整體配筋量為分析值的1.2至1.8倍。

Prestressed concrete is commonly used in bridge engineering, The monitoring results of Kaohsiung Port Viaduct is used as an example for comparisons with analysis in this paper. We focus the behavior of anchorage zones of the end diaphragm and deviation saddle. The finite element software ANSYS is used for the mechanical models of the end diaphragm and deviation. According to the construction order of prestressing, the forces at anchored plate are applied sequentially in the model analysis. Furthermore, we pick the maximum stresses on the path along the tendons to calculate the bursting forces and deviation forces. Therefore, we design the related steel in the end diaphragm and deviation saddle. Finally, we compare the results of the analysis with the design of Kaohsiung Port Viaduct.
We find that there is reasonable relationship for the required reinforcement in the anchorage zone between the analysis and actual design. The development of the bursting stress are similar to those of Guyon’s theory. The results of Viaduct is 1.7 times greater than that of the analysis. The actually amount of the vertical reinforcements Viaduct is 1.1 times greater than that of the analysis. Modified deviation saddle can significantly reduce the induced stress due to the deviation. The required amount of reinforcement in the simple deviation saddle is 1.12 times greater than that of the modified deviation saddle. Therefore, the modified deviation saddle can reduce the required steel area and also strengthen the web and the saddle. The design of the steel area of Viaduct is 1.2 to 1.8 times greater than that of the analysis.

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