實尺寸雙層雙跨含RC牆結構受雙向剪力實驗研究

Experiment of RC Building Frame Containing Walls Subjected to Bi-directional Cyclic Loading

李逸聰(Yi-Tsung Lee)

指導教授 ： 黃世建

國立臺灣大學/工學院/土木工程學研究所/碩士(2009年)

https://doi.org/10.6342/NTU.2009.03186

摘要

摘要
本研究為國家地震中心與美國德州休士頓大學的合作計畫，試驗計畫設計一座兩層樓三維足尺鋼筋混凝土含牆構架試體，藉由剪力牆的不對稱配置，來反應結構因平面勁度不對稱(stiffness irregularity)所造成的偏心扭矩效應。研究課題著重於結構行為進入高度非線性時，個別結構元件間複雜的互制行為及偏心扭矩效應，探討結構強度、裂縫發展、以及破壞模式產生之機制。該試體除梁、柱及牆等結構之外，並配置樓板，藉由樓板來達成傳力機制，以求更加符合實際結構行為。試驗所得之數據資料將提供結構非線性分析之驗證，來進行各種評估方法之研究。
試驗結果顯示，當試體中的單柱進入降伏狀態後，平面勁度不對稱的現象更加嚴重，引發更大的偏心扭矩，至實驗後期時，結構中配置的剪力牆開始呈現受扭的行為，顯示當結構進入非線性階段後，剪力牆受力型態開始會有明顯的改變，除了承受面內剪力與面外的撓曲彎矩外，牆體本身亦會承受扭矩。

關鍵字

雙向剪力 ； 扭矩 ； 勁度不對稱

並列摘要

Abstract
This research is a cooperative project between the National Center of Research Earthquake Engineering and University of Houston, Texas.A two floor 3D-specimen with asymmetric walls was tested to study the eccentric torsion effects by stiffness irregularity. The purpose of the project is to research the complex behavior of reinforced concrete buildings subjected to multi-directional earthquake loadings and the subsequent interactions resulting from the nonlinear response of individual structural components .In the set up,the lateral loading was transferred through the specimen floors in order to simulate more accurate structural behavior. The measureed data of this experiment can be used to verify the nonlinear analyses.
The experimental results show that the stiffness irregularity became more pronounced after column yielding.At the final stage of experiment, the nonlinear behavior of structure had been fully reached.It is also observed that in addition to in plane shear force and flexure moment, torsion effects becomes more apparent for the shear walls.

並列關鍵字

shear ； torsion ； irrgular irregular stiffness

參考文獻

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