| 研究生: |
劉育成 Liu, Yu-Chen |
|---|---|
| 論文名稱: |
強震時抗彎構架桿件元素韌性因子需求分佈之研究 |
| 指導教授: |
郭炎塗
Guo, Yan-Tu |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年: | 2003 |
| 畢業學年度: | 91 |
| 語文別: | 中文 |
| 論文頁數: | 107 |
| 中文關鍵詞: | 桿件韌性因子 、非線性動力歷時分析 |
| 外文關鍵詞: | ductility factor |
| 相關次數: | 點閱:94 下載:1 |
| 分享至: |
| 查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報 |
現行的耐震設計規範多採用強柱弱樑的型式加以設計,如此的設計方式不僅能夠使結構在地震作用下,有選擇性的使部分桿件產生非線性變形,消耗更多的能量,並且可以使部分之結構桿件發生局部的破壞,不致於使整體結構發生崩塌的情況。但這樣的模式仍與實際結構受震的情況有些許的差距,由許多文獻與地震災害記錄報告可知,在地震力作用下,仍有少部分的柱桿件會產生永久的變形,因此本研究將針對結構樑柱桿件皆可進入非線性產生非線性變形的情況加以討論,並利用桿件韌性因子的概念討論其非線性變形的能力。
本研究乃採用鋼筋混凝土抗彎構架,針對樓高為5、10、15、20樓之結構進行分析,並將樑柱桿件勁度提高2倍、3倍共12種型式之結構;在樑柱性質方面,依據【洪文岳,2001】之簡化設計法並搭配【Panagiotakos and Fardis,2001】建議之材料性質,建立一完美彈塑性行為用以描述結構桿件之基準曲線,並採用【Wen,1976】建議之力與變位關係的遲滯圈模式;在作用力方面,則採用921集集大地震TCU084測站及1022嘉義大地震CHY046所量測之兩筆加速度歷時資料;在分析模式方面,乃根據有限元素分析程式Sap2000Nonlinear的基本理論,採用集中質量(Lump Mass)方式建立基本的動力方程式,並且利用Ritz Vector Method進行模態分析,最後並搭配FNA(Fast Nonlinear Analysis)及Modified Newton-Raphson Method進行平面的非線性動力分析。
分析結果顯示,最大桿件韌性發生的位置並非在結構最底層的部分,而是發生在相對高度為0.2~0.5之間;並且對於樑柱皆模擬成具有產生非線性變形能力的桿件,其對整體的結構反應具有一定程度的影響,因此對於設計者而言,在設計前應多加以考量。
none
Anagnostopoulos, S. A. (1981). "Inelastic Beam for Seismic Analysis of Structure," Journal of Structural Division, ASCE, Vol.107, ST7, July, pp.1297-1311.
Anagnostopoulos, S. A. and Nikolaou, D. A. (1992). "Behavior Versus Ductility Factors in Earthquake Resistant Design," 10th World Conference on Earthquake Engineering, Rotterdam, Netherlands.
ATC40(1996). Seismic Evaluation and Retrofit of Concrete Buildings, Applied Technology Council, Vol.1.
Beskos, D. E. and Anagnostopoulos, S. A. (1997). Computer Analysis and Design of Earthquake Resistant Structures -A Handbook, Computational Mechanics Publications, Southampton.
Chorpa, A. K. (1995). Dynamics of Structures- Theory and Applications to Earthquake Engineering, Prentice Hall, New Jersey.
IBC (2000). International Building Code, International Code Council, USA.
Lee, D.-G., Song J.-K. ,and Yun C.-B. (1997). "Estimation of System-Level Ductility Demands for Multi-Story Structures," Engineering Structure, Vol.19, No.12, pp.1025-1035.
Mehanny, S. S. F., Kuramoto, H. and Deierlein, G. G. (2001). "Stiffness Modeling of Reinforced Concrete Beam-Columns for Frame Analysis", ACI Structure Journal, Vol. 98, No. 2, March-April, pp.215-225.
Panagiotakos, T. B. and Fardis, M. N. (2001). "Deformations of Reinforced Concrete Members at Yielding and Ultimate," ACI Structure Journal, Vol. 98, No. 2, March-April, pp.135-148.
Rahman, S. and Grigoriu, M.(1994). A Markov Model for Local and Global Damge Indices in Seismic Analysis, National Center for Earthquake Engineering Research, Report NCEER-94-0003, University of New York, Buffalo.
SEAOC (1996). Recommended Lateral Force Requirements and Commentary, Seismology Committee Structural Engineers Association of California, California.
Sap2000(1996), "Integrated Finite Element Analysis and Design of Structures:Analysis Reference Volume 1,"Computers and Structures, Inc, Berkeley, California, USA.
UBC (1997). Uniform Building Code, International Conference of Building Officials, Whittier, California.
Wen, Y. K. (1976). "Method for Random Vibration of Hysteretic Systems," Journal of the Engineering Mechanics Division, ASCE, Vol. 102, No. EM2, April, pp.249-263.
Wilson, E. L., Yuan, M.-W., and Dickens, J. M. (1982). "Dynamic Analysis by Direct Superposition of Ritz Vectors," Earthquake Engineering and Structural Dynamics, Vol.10, pp. 813-821.
Wilson, E. L. (1995). Three Dimensional Static and Dynamic Analysis of Structures, Computer and Structures, Berkeley, California.
內政部, "新修正建築技術規則建築構造編耐震設計條文", 民國八十五年十一月.
內政部, "建築技術規則", 民國八十九年一月.
洪文岳, "鋼筋混凝土抗彎構架系統之集集大地震非線性分析-探討耐震設計規範結構行為參數 ", 民國九十年七月.
林士群, "鋼筋混凝土抗彎構架之容量反應譜法分析 ", 民國九十年七月.
蕭賀方, "基礎隔震對房屋結構的耐震效益研究 ", 民國九十一年七月