考慮鋼筋局部挫曲之三維鋼筋混凝土撓曲構件數值分析

Numerical Analysis of Three-Dimension Reinforced Concrete Flexural Members Consider the Local Buckling

蕭政倫(Cheng-Lun Hsiao)

指導教授 ： 黃昭勳

共同指導教授 ： 王仁佐(Ren-Zuo Wang)

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2014年)

https://doi.org/10.6841/NTUT.2014.00799

摘要

本文研究目的主要是以纖維斷面分析方法(Fiber-Section Analysis Method)，來考慮變軸力與雙軸彎矩互制下的行為。並且提出一個鋼筋的循環應力-應變關係的制定和驗證，鋼筋循環迴圈模型主要是遵循Giuffre-Menegotto-Pinto的方程式做一些修改並考慮到屈曲的影響，然後通過方程式組合，獲得一個完整的路徑依賴循環組成模型，提出的模型可以合理的預測鋼筋包括屈曲後的循環行為。本文以C++程式語言撰寫纖維斷面構件分析程式，並結合迭代的方法，迭代主要採用牛頓-瑞福生法(Newton-Raphson method)進行，進而加入混凝土與鋼筋的應力-應變模型，去比對鋼筋混凝土柱試驗作為驗證程式的正確性，並且加入曲率面積法推算出側力與位移以求得構件之撓曲變形。本文研究之成果，將可提供國內學界與工程界用來模擬分析鋼筋混凝土構件撓曲破壞行為之參考依據。

關鍵字

變軸力 ； 纖維斷面分析方法 ； 曲率面積法 ； 包絡線

並列摘要

In this paper, the purpose of study is developed to the procedure of Fiber-Section Analysis Method (FSAM) for considered the interaction of axial force and bending moment. And propose a reinforcement of cyclic stress-strain relationship developed and validated, reinforced circulation loop model is mainly follow Giuffre-Menegotto-pinto equation to make some changes and consider the impact of flexion, and then through a combination of the equation, to get a complete cycle consistion of path dependence model, the proposed model can reasonably predict the behavior of reinforced cycle including buckling. In this paper, the programming language C ++ written fiber section components analysis program, And the method combines iterative Newton-Raphson method, and adding concrete and reinforced stress-strain model, to compare the test as reinforced concrete columns to verify the correctness of the program, and calculate the curvature area method in order to achieve lateral force and displacement components of deflection. In the future, this study will be adapt to simulate numerical simulations on the flexure behavior of reinforced concrete members.

並列關鍵字

the interaction of axial force and bending moment ； fiber section analysis method(FSAM) ； curvature-area Analysis method(CAAM) ； envelope

參考文獻

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