現今橋梁工程已發展至相當成熟，但針對上部結構鋼箱梁之細部行為相關研究較少，且於台灣橋梁規範中尚未有箱型梁之橫隔板設置數量、類型及間距等之相關規定，故本篇論文將探討鋼箱梁內
部構件於偏心載重下之受力行為。
本論文透過有限元素分析軟體探討直線形鋼箱梁跨中之橫隔板數量及間距、橫隔板類型、開孔率等對鋼箱梁之影響，將其研究結果延伸至曲梁進行初步分析，最後將現行規範與本文之研究結果作出歸納與比較，並提出相關之建議。

The developement of Bridge Engineering is considered quite mature nowadays, but there is still lack of research on the detailed behavior of the steel box girder of the superstructure. There is no relevant regulation of the diaphragms regarding on the number, type and spacing of the box girder in the Taiwan Bridge Code. This dissertation will discuss the stress behavior of the internal members of a steel box girder under eccentric loads.
In this paper, finite element analysis software is used to investigate about the influence of the number and spacing of diaphragms, the type and aperture ratio of diaphragms on the steel box girder, and later extend it to the curved girder for preliminary analysis.
The existing regulations and the results of this study will be summarized and compared. Finally, relevant suggestions will be made.

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