鋼筋混凝土梁之扭力模式探討

The Model for Torsion Behavior of Reinforced Concrete Beam

林蜂勝(Lin Fong Sheng)

指導教授 ： 盧俊愷 ； 郭詩毅

國立屏東科技大學/工學院/土木工程系所/碩士(2009年)

https://doi.org/10.6346/NPUST.2009.00155

摘要

本論文主要以混凝土內涵模式結合剪力牆元素理論的SMM理論對鋼筋混凝土梁承受扭力之行為進行探討，內涵時間塑性理論為本文的出發點，以盧與吳[15]建立之混凝土材料內涵時間塑性理論模式為基礎，結合SMM理論並修正橫斷面剪力流區域有效厚度、扭轉角等修正模式，對鋼筋混凝梁受扭力下力學行為分析進行探討，本文模式對鋼筋混凝土梁承受扭力下的力學行為預測並與實驗比較比較。從結果可見本文模式對受扭力於一般梁之扭矩－扭角曲線圖，在上升段、降伏段、下降段等部份大致上皆相當符合趨勢，具有良好的預測能力。

關鍵字

內涵時間塑性模式 ； 混凝土 ； SMM ； 材料組成律 ； 扭力

並列摘要

The purpose of the research is to discuss the torsion behavior of reinforced concrete beam. In this paper, the endochronic model of concrete has been used with the SMM theory to describe the torsion behavior of reinforced concrete beam. The endochronic model of concrete is derived by Lu and Wu[15]. The SMM theory is from Hsu and Zhu[7,29]. The present model has been modified to be used for the reinforced concrete beam. The theoretical results are compared with experimental data.

並列關鍵字

endochronic model ； reinforced concrete ； SMM ； torsion

參考文獻

7. Hsu, T. T. C. and Zhu, R. R. H., 2002, “Softened Membrane Model for Reinforce Concrete Elements in Shear” ACI Structural Journal, Vol. 99 , No. 4 , Jul.-Aug., pp.460-469.

11. Wu, H. C., and Wang, T. P., 1983, “Endochronic Description of Sand Response to Static Loading”, Journal of Engineering Mechanics Division,Vol. 109 , pp. 970.

13. Wu, H. C., and Aboutorabi, M. R., 1988, “Endochronic Modeling of Coupled Volmnetric-Deviatoric Behavior of Porous and Granular Material”, International Journal of Plasticity, Vol. 4 , pp. 163.

14. Wu, H. C., Wang, T. P., Pan, W. F., and Xu, Z. Y., 1990, “Cyclic Stress-Strain esponse of Porous Aluminum”, International Journal of Plasticity, Vol. 6 , pp. 207.

16. Lu, Jun-Kai and Wu, Wen-Hsiung, 2001, “Application of softened truss model with plastic approach to reinforced concrete beams in torsion”，Structural Engineering and Mechanics, Vol. 11, No. 4, pp. 393-406.