冷軋型鋼構造建築物結構設計規範與解說修正研擬

The Study on Amending the Specification and Commentary of Structural Design of Cold-Formed Steel Building

目前國內的「冷軋型鋼構造建築物結構設計規範與解說」乃於民國89年度研擬，於92年度完成國內建築技術規則冷軋型鋼構造專章完成審議，並於93年公佈施行，從研擬至今業已12年，隨著經濟的發展與科技的進步，適時的修正規範是必須進行的一項工作，因此本研究主要目的在於修訂適合現今的冷軋型鋼造建築物結構設計規範與解說。89年度研擬冷軋型鋼造建築物結構設計規範與解說時，僅呈現載重與強度係數設計法，未能將容許應力法納入考量，因此，本次修正冷軋型鋼造建築物結構設計規範時，參造美國鋼鐵協會在編修最新規範的作法，將國內冷軋型鋼鋼造建築物結構設計規範，除了修正原有的載重與強度係數設計法的相關內容外，並加入容許強度法設計法於規範內。另外，也將用以計算結構構材的直接強度法置於規範的附錄內，以提供設計者在計算構材強度時的另一種選擇。

In the beginning of 1990, Architecture & Building Research Institute started to draft the design specification for the cold-formed steel uses in the structural design of building. A special chapter related to cold-formed steel structures in domestic Building Code and Regulations was accomplished in 2003 and promulgated in 2004. A routine and regulary amendment for the existing specification is mission of matter. The purpose of this research is focused on amending the design specification in order to provide the state of art information. Excluding the allowable stress design, the lateral resistance and factor load design was the only design method adopted in the first version of the design specification for the cold-formed steel used in the structural design of building. Therefore, following the same modification of the recent design specification published from American Iron and Steel Institute which includes lateral resistance and factor load design as well as allowable strength design, the allowable strength design is considered to be added in the amendment of design specification. In addition, a new design method, Design of Cold-Formed Steel Structural Members Using Direct Strength Method, is also included as an alternative.