| 姓名 | 游裕民(Yu-Min Yu) | 電子郵件信箱 | yyumin@kimo.com.tw | |
| 畢業系所 | 營建工程系碩士班(Department and Graduate Institute of Constrction Engineering) | |||
| 畢業學位 | 碩士(Master) | 畢業時期 | 90學年第2學期 | |
| 論文名稱(中) | 節點勁度參數對非均勻柱構件有效長度係數之影響 | |||
| 論文名稱(英) | Effect of Effective Length Factors of Tapered Columns due to Relative Joint Bending Stiffness Ratio | |||
| 檔案 |
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。 |
論文使用權限 | 使用者自訂權限：校內 0 年後、校外 2 年後公開 | |
| 論文語文/頁數 | 中文/121 | |||
| 摘要(中) | 一般在實務設計中均勻斷面構件求取有效長度係數K最普遍採用的方法就是利用準線圖(Alignment
Chart)，但對於應用準線圖求取非均勻斷面構件之有效長度係數Kγ，則受到相當的限制，故工程單位也常因此在設計時捨棄非均勻斷面構件的考量。 本研究在理論部分以分割元素模式(discrete element model)為基礎，配合增量型疊代數值分析方法，建立一個具有高度通則性之改良勁度矩陣分析電腦程式為理論基礎之後續分析工作。利用更簡略之模式來模擬非均勻構架，不但能明確的表現出樑柱相對勁度概念，更能夠有效減少本程式在模擬構件時之節塊數目，以增加程式的實用性。 本文先對於單一柱構件之邊界條件進行分析，採用AISC規範求取有效長度係數之G值控制樑柱相對勁度，同時考慮一般實務上結構接合並非完全剛性或完全鉸接，模擬介於兩者間之半剛性接合，藉由模擬結果進一步探討非均勻構架之結構行為，並與前人之研究相關成果比較。另，本文亦探討鋼結構非均勻柱構件在不同樑柱相對勁度下有效長度係數在非彈性行為時的變化及影響，進而了解非均勻構件有效長度係數Kγ在實際構架中的變化。 | |||
| 摘要(英) | Alignment Chart is
commonly used to determine the effective length factor of prismatic
member. Due to the restriction of the application of Alignment Charts,
designers often discard the application of tapered members. To follow up the developing of a modified stiffness matrix method and a computer program with a very high generality to solve steel structural stability problem, the analytical method used in this study are Discrete Element Model and incremental typed numerical method. For more practical, this study simplifies the model to modify tapered frames. This model not only specifically shows relative joint bending stiffness ratio but also effectively reduce the amount of members used for analysis. This study first analyzes boundary condition of single column member and adopts relative joint bending stiffness ratio of AISC to find the effective length factor. For that a structural joint or connection is neither full rigid nor full hinge in practice, this study uses this concept to establish the semi-rigid joint model. This study then discusses the structural behaviors of tapered members results with those from and compares these previous studies. This study also examines the effect of the effective length factors inelastically due to relative joint bending stiffness ratio and tries to find out the changes of effective length factors in tapered practical frames. | |||
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