由於電腦輔助分析軟體的成熟發展，使分析技術普遍被土木營造業所採用，除了提升建築結構的設計與強度外，更增加了建物的安全性。鋼架結構已廣泛應用於公共工程中，然而近年來，鋼材價格不斷飆漲，在成本考量下，強度高、安全性好的鋼架結構，便是設計考量的重要因素。鋼架內部的斜撐桿件可提高結構整體勁度，又可額外增加結構消能能力，因此斜撐桿件的斷面型式，以及裝設於鋼架上的位置，將影響到鋼架結構的行為表現。
本研究即是以電腦輔助分析軟體ANSYS Workbench來分析鋼架搭配上不同的斜撐桿件設計，共分成三部分進行，第一部分為參考公共設施的鋼架設計資料，再輔以ANSYS Workbench DesignModeler繪製鋼架及斜撐桿件模型；第二部分為利用有限元素軟體ANSYS Workbench進行結構應力及變位分析；第三部分為對鋼架結構之加載載重、破壞模式及變位量進行研究探討，藉以獲得較佳的斜撐設計。

Due to the highly development of the computer-aided technology, finite element method has being become as much more popular and commonly used in civil engineering applications. Safety and economy no doubt are the main concerns to engineers in the structural design process. For the purpose to investigate the behavior of the structural responses in detail, software package ANSYS is used herein for the simulation analysis. Rigid joint trusses are considered as axial-flexural bar element structures. Static analysis with refined finite element models is solved with members in various cross sections. Whole section yielding and member buckling are considered as the damage stages as the failure mode of the structures. It is believed that the methodology can be applied to structural optimal design problems to make the proper selection of members.

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