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題名 | 三維鋼結構中構件有效長度係數之研究=Calculation of the Effective Length Factor for Steel Members in Three-Dimensional Structurs |
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作者姓名(中文) | 黃國平; 朱聖浩; | 書刊名 | 中國土木水利工程學刊 |
卷期 | 11:3 1999.09[民88.09] |
頁次 | 頁451-459 |
分類號 | 441.1 |
關鍵詞 | 列線圖; 鋼結構; 有效長度係數; 三維結構; 圓頂結構; Alignment chart; Steel structure; Effective length factor; Three-dimensional structure; Dome; |
語文 | 中文(Chinese) |
中文摘要 | 在鋼結構設計中必須計算桿件之有效長度係數(K值),而目前最常被用來計算桿件有效長度係數的方法為列線圖(Alignment chart)法,其方法主要是考慮所欲設計桿件本身及其兩端所連接桿件(包括梁及柱)的彎曲勁度(即EI值)而決定出K值,而其適用的對象則為規則的房屋結構或桿件正交的結構,而對於桿件並非正交的結構而言該方法便無法適用。因此要探討特殊結構桿件之K值,勢必需要另一種方法,而這也是本文研究之目的。本文研究K值作法是:考慮整個三維結構系統在軸力載重情況之下導致結構總體勁度喪失而造成挫屈,得到挫屈載重進而可求得桿件之K值,並依此撰寫一電腦程式,然後利用此程式進行K值的探討與研究,對象包括一般房屋結構以及較為特殊之結構。文中並使用本電腦程式分析房屋,圓頂(Dome)及橋樑三種結構。 |
英文摘要 | In the design of steel structures, one essential step is to calculate the effective length factor (K), which is often achieved through use of the alignment chart. Such a method, which considers only the stiffness of the column and the stiffnesses of the members connected to both ends of the column in finding the effective length factor of the column, is only suitable for regular and rectangular frames. For complex structures, other adequate methods should be adopted. The main purpose of this paper is to find the buckling load of structures under the action of axial forces using the three-dimensional buckling analysis, by which the effective length factor of each member can be evaluated. This method can be applied to any types of regular and irregular structures. Three examples, including the building, dome and bridge structures, were studied in this paper. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。