鋼筋混凝土柱軸力與雙向彎矩互制效應之研究

Study on Interaction Behaviors of RC Columns Excited by Axial Force and Biaxial Bending

蔡宏裕(Hung-Yu Tsai)

指導教授 ： 宋裕祺

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2007年)

摘要

本文研提出一套視窗化程式來模擬鋼筋混凝土柱承受軸力與彎矩作用之影響，考量混凝土應力非線性分佈之特性，在符合力平衡、材料組成律與變形諧合等原則下，分析柱承受軸力與雙向彎矩下的力學特性，並繪出軸力-彎矩交互影響曲線( interaction curve)，並據以與其它學者研究所得載重等高線進行比較，研究其差異性。
為證實本文所研提方法之準確性及可行性，爰用國內26組鋼筋混凝土柱漸變偏心軸力試驗之成果進行比對，結果顯示分析值與實驗值大致相符；另外，本文所得 曲線也與其他國內外軟體分析成果各進行差異討論，結果顯示本文所開發之程式具相當之準確度。本文所得成果冀能供為工程師從事結構設計之參考。

關鍵字

力平衡 ； 變形諧合 ； 材料組成律 ； 載重等高線 ； 偏心軸力

並列摘要

This thesis proposed a set of visualized operation system for the analysis on interaction behaviors of RC columns excited by axial force and biaxial bending. Incorporating with equilibrium and compatibility condition, the constitutive law of concrete proposed by Kawashima et. al. as well as the elastoplastic model of reinforcement was taken into account mechanically. By necessary comparisons, a good consistency can be found between the analysis results and the results obtained by conventional load contour method.
To testify the accuracy and validity of the proposed approach, twenty-six reported results of bidirection-eccentry tests of RC columns were adopted for necessary investigation. It shows that this study can provide an acceptable result and might benefit the paractial design efforts for structural engineers.

並列關鍵字

Equilibrium ； Compatibility ； Constitutive Laws ； Load Contour Method ； Bidirection-Eccentry

參考文獻

[24] 許雲妃，雙軸彎曲鋼筋混凝土柱之直接分析法，碩士論文，國立成功大學建築研究所，許茂雄教授指導，1998年。

[32] 蘇進國，以結構性能為基準之房屋建築耐震能力評估，碩士論文，國立台北科技大學土木防災所，宋裕祺教授指導，2004年。

[1] Amarjit,S.B. and Mendis P., “New Method to Evaluate the Biaxial Interaction

[3] Bresler, B., “Design Criteria For Reinforced Columns Under Axial Load And Biaxial Bending”, ACI Journal proceedings, Vol. 57, Nov. 1922 pp.481-490.

[5] Hsu, C.T.,“Analysis and Design of Square and Rectangular Column by Equation of Failure Surface”, ACI Structure Journal , March-April 1988, pp167-179.