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研究生:方品鈞
研究生(外文):Pin-Jyun Fang
論文名稱:改良圍束之強化式挫屈束制斜撐試驗與模擬分析
論文名稱(外文):Experiments and Analysis of Improved Constraining Component of Reinforced Buckling Restrained Brace
指導教授:蔡崇興
指導教授(外文):Chung-Shing Tsai
學位類別:碩士
校院名稱:逢甲大學
系所名稱:土木工程所
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
語文別:中文
論文頁數:119
中文關鍵詞:被動控制多節強化式挫屈束制斜撐結構控制挫屈束制斜撐
外文關鍵詞:BRBPassive ControlMC-RBRBsStructural Control
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挫屈束制斜撐屬於結構被動控制中之消能元件,近年來一直被應用於結構物之防震消能之用,許多學者的研究指出,挫屈束制斜撐不僅可有效提升構架整體的勁度又可吸收地震之能量。同時,經由實驗證明其可改善傳統斜撐於地震時首軸向壓力會產生挫屈的缺點並具有良好的消能機制。
但傳統挫屈束制斜撐仍存在著缺點待改善,如 (1) 組合困難 (2)混凝土之施工養護(3)無法完全防火等問題尚待克服,因此,發展出一種新型挫屈束制斜撐稱之為強化式挫屈束制斜撐( Reinforced Buckling Restrained Braces 簡稱RBRB ),此強化式挫屈束制斜撐是針對傳統挫屈束制斜撐之缺點加以改良而成除了強化式挫屈束制斜撐之外,利用同樣原理所發展出的簡易強化式挫屈束制斜撐( Simplified Reinforce Buckling Restrained Braces )及多節強化式挫屈束制斜撐( Multi-Curved Reinforce Buckling Restrained Braces )皆經由元件測試之結果觀察出這三種新型消能裝置具有相當穩定之非線性遲滯行為構件。
本論文提出之改良型圍束則是希望藉由使用不同種類之圍束強
化式挫屈束制斜撐在製作過程以及所提供之效果能有優化之作用,並直接影響斜撐在其運用上的功效。
由試驗結果顯示改良圍束之強化式挫屈束制斜撐在發生塑性後
的非線性行為穩定,且具有飽滿的遲滯迴圈。除了進行改良圍束之強化式挫屈束制斜撐之性質測試外,吾人亦利用試驗結果與 蔡崇興教授推導之增量型文氏模式進行模擬分析,模擬結果顯示,增量型文氏模式對於新型挫屈束制斜撐在承受反覆加載作用下所產生之非線性遲滯行為的掌握程度相當良好。
In recent years, buckling restrained braces have been used in the buildings in seismic mitigation. Many researchers have shown that the buckling retrained brace (or unbonded brace) is able to not only strengthen stiffnesses of a structure but can also absorb seismic energy. After many tests, it has been proven that the BRB can lessen structural responses without buckling.
However the conventional buckling restrained brace still has shortcomings such as: (1) complicated assembly procedures (2) long time for curing concrete during manufacturing and (3) problems with fire protection. Therefore, a new type of brace called the Reinforced Buckling Restrained Braces (RBRB) has been develop. Reinforced Buckling Restrained Braces has been proposed to improve the shortcomings of the traditional BRB. In addition to Reinforced Buckling Restrained Braces,the similar concept has been used principle to develop Simplified Reinforce Buckling Restrained Braces (S-RBRB) and Multi-Curved Reinforce Buckling Restrained Braces (MC-RBRB). After the cyclic loading test, it has been proven that the RBRB, S-RBRB and MC-RBRB posses very stable mechanical behavior.
The Improved Constraining Component of RBRBs has been
proposed in this study to ameliorate manufacturing procedures and to enhance the efficiency of BRBs.
It demonstrated from experimental results that the improved constraining component of BRBs remained stable hysteresis loops after yielding. Furthermore, the nonlinear behavior of the new BRB can be well simulated by using the Wen’s model in an incremental from developed by C.S. Tsai.
摘要 I
ABSTRACT III
目錄 IV
表目錄 VII
圖目錄 VII
第一章 緒論 1
1.1 前言 1
1.2 研究背景與目的 2
1.3 研究內容 5
第二章 消能原理與挫屈束制斜撐之文獻回顧 7
2.1 消能原理 7
2.2 消能元件之分類及特性 9
2.3 挫屈束制斜撐之研究與發展 11
第三章 新型挫屈束制斜撐的簡介與力學行為 19
3.1 各種新型挫屈束制斜撐介紹與基本力學行為 19
3.1.1 強化式挫屈束制斜撐 19
3.1.2 強化式挫屈束制斜撐之等效勁度 21
3.1.3 多節強化式挫屈束制斜撐 23
3.1.4 多節強化式挫屈束制斜撐之等效勁度 23
3.1.5 簡易強化式挫屈束制斜撐 26
3.1.6 簡易強化式挫屈束制斜撐之等效勁度 26
3.2 新型強化挫屈束制斜撐裝置 28
3.2.1 新型強化式挫屈束制斜撐之等效勁度 30
第四章 新型挫屈束制斜撐之分析模式 42
4.1 舊有文氏模式之理論推導 42
4.2 改良後文氏模式之理論模式 43
4.3 新型挫屈束制斜撐之雙降伏面分析模式 45
第五章 試驗計畫與試驗過程 52
5.1 試驗計畫簡介 52
5.1.1 彈性試驗 53
5.1.2 標準加載試驗 54
5.1.3 疲勞加載試驗 55
5.2 縮尺度新型挫屈束制斜撐之元件測試結果 55
5.2.1 試驗裝置介紹 55
5.2.2 試體設計及製作 56
5.2.3 試驗目的與要求 58
5.2.4 試驗過程 58
5.3 新型挫屈束制斜撐之非線性遲滯行為模擬 63
第六章 結論與建議 97
6.1 結論 97
6.2 建議 98
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