以等值柱模型分析含牆RC構架

The Analysis of the Walls Infilled in RC Frames Using the Equivalent Column Model

陳振瑋(Cheng-Wei Chen)

指導教授 ： 李有豐

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2005年)

https://doi.org/10.6841/NTUT.2005.00340

摘要

本研究主要分析補強前後含牆RC構架之耐震行為，目的是希望能合理有效地分析建築物之側向力與位移曲線，以利後續作為耐震評估之用，並考量牆體具有承受軸力、彎矩與剪力之較高自由度行為，以「等值柱」模型模擬含磚牆與含RC牆構架以及「牆柱」模型模擬含RC翼牆構架之耐震行為，分別對國內實驗數據及理論分析方法-極限軟化桁架模型進行比對。所收集之實驗試體可分為RC柱體、RC空構架、含磚牆RC構架、含RC牆構架與含RC翼牆構架，並包括以鋼纜線及碳纖維圍束補強柱之試體。利用M-L-L圍束組成律(Li et al., 2003)計算混凝土圍束之應力與應變關係，並進行斷面彎矩與曲率關係之運算。最後以SAP2000工程軟體將「等值柱」或「牆柱」模型結合於RC空構架，進行非線性靜力推覆分析，得到含牆RC構架之側向力與位移關係，將其與實驗數據作比對，結果顯示出理論值與實驗值相當接近，並証明了等值柱模型與牆柱模型之可行性。另將等值柱模型與極限軟化桁架模型(Lee et al., 2004)比較優缺點，發現等值柱模型有較簡單且快速之優點，可供日後工程上之應用。

關鍵字

含牆構架 ； 等值柱 ； 牆柱 ； 非線性靜力推覆分析

並列摘要

In this thesis, an effective analysis model, named “equivalent column” model, was proposed for the wall inside the RC frames, and consideration the wall can resist axis force, moment, and shear force. The “equivalent column” model can simulate the brick wall, the RC wall as well as the wing wall. The experimental and analytical results of the RC column, pure RC frame, RC frame in-filled with RC wall, RC frame in-filled with brick wall, RC frame in-filled with wing wall, and RC column repaired by using the steel wire cables and the carbon fiber reinforced plastics (CFRP) were compared in the thesis. The stress-strain relationship of the confined concrete, proposed by Li et al. (2003), is used in the theoretical sectional analysis to obtain the moment-curvature relationship of these confined columns. Finally, the frame and the equivalent column or the wall-column are engaged by SAP2000 program and then analyzed following a non-linear static pushover analysis to obtain the lateral strength-displacement envelope of each frame. The analytical results can reasonably predict the lateral force-displacement relationships of these RC frames. In addition the results of the “equivalent column” model and the “ultimate-softened truss” model proposed by Lee et al. (2004) were compared, we have found that the “equivalent column” model is easy to apply and the results are reasonable.

並列關鍵字

The wall inside the RC frames ； Equivalent column ； Wall-column ； Pushover

參考文獻

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