利用FRP補強結構物是施工的趨勢，有必要提出一套合理且高可信度的分析分法，可以準確預測補強後結構物的極限強度及相關趨勢，提供工程實務界的評估使用。

本文是利用有限元素分析軟體ABAOUS，對FRP補強預力混凝土梁提出合理的非線性分析模式。所分析的預力混凝土梁分為長梁和短梁兩種情況，再細分為低預力、中預力、高預力情況下，FRP補強底面與側面的行為。在補強的形式上，本文將FRP補強的層數與纖維角度設為影響極限載重強度的參數。希望在上述不同的情況下，獲得使FRP補強預力混凝土梁效果較佳的一些趨勢，提供相關研究、工程應用參考及建議。

The current trend in construction is to use FRP as reinforcement in concrete structures. Therefore, a reliable and effective analysis method is needed to offer for practical engineering applications.
This paper shows a reasonable nonlinear model of prestressed concrete beams strengthened by fiber-reinforced plastic materials with the commercial FEM software, ABAQUS. PC beam compares two shapes including long beam and short beam. And prestressed force compares low, middle and high prestressed forces. For PC beam strengthened by FRP, this paper compares strengthened in bottom face and lateral face. The important parameters are layers of FRP and angle of FRP for strengthened types. In the above-mentioned conditions, this paper provides some good trend of prestressed concrete beams strengthened by FRP for correlated research and engineering application.

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