鋼筋混凝土短柱之振動台試驗與分析

Shake Table Test and Analysis of RC Short Columns

陳彥勳(Yan-Syun Chen)

指導教授 ： 廖文義

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2010年)

摘要

本文為進行六座純剪破壞控制鋼筋混凝土柱之振動台試驗以了解鋼筋混凝土短柱受不同軸向地震力之影響，共設計兩種類型鋼筋 混凝土柱進行振動台試驗，每類型三座試體之主軸斷面分別為轉向0度、22.5度與45度。試驗採用921集集大地震測站所量測之加速度歷時資料為輸入地震，紀錄試體位移與加速度歷時行為，並分析出各試體剪力與位移遲滯迴圈圖與包絡線。另使用軟化壓拉桿模型應用於柱行為分析，由柱桿件傳力機制，計算試體剪力強度，及由位移預測模型計算側力位移曲線，再與振動台實驗試體包絡線進行比對其預測效果。在分析模擬方面，採用有限元素分析程式SAP2000再配合Takeda與Pivot遲滯模式，進行模擬分析剪力控制鋼筋混凝土柱於承受地震加速度歷時紀錄之非線性反應。

關鍵字

鋼筋混凝土 ； 非主軸 ； 短柱 ； 振動台試驗 ； 軟化壓拉桿 ； 非線性歷時分析

並列摘要

This thesis investigates the results of shake table tests on six full-scale shear governed RC columns. Two types of RC columns were designed for the shake table tests. To evaluate the effect of the principal axis orientation on the seismic performance of RC short columns, in the three specimens of each type the principal axes of cross-section are in the directions of 0, 22.5 and 45 degrees to the excitation direction. The input ground motions are the acceleration time histories that recorded at the 921 Chi-Chi earthquake. The response time histories for the accelerations and displacements as well as the force-displacement hysteretic loops are presented in this study. The Strut-and-Tie Model was applied to the prediction of the shear strength and force-deformation relation of the tested RC columns. The calculated results compared with those obtained by shake table test show good agreement. Finally, the finite element analysis program SAP2000 with the Takeda and Pivot hysteretic model was adopted as the analysis tool for analyzing the non-linear behaviors of the tested RC columns.

並列關鍵字

Reinforced concrete ； Principal axis orientation ； Short RC column ； Shake table ； Strut-and-Tie Model ； Nonlinear time history analysis

參考文獻

【12】 賴弘勛，「鋼混凝土構架之振動台試驗與模擬分析」，碩士論文，國立台北科技大學土木與防災研究所，台北，民國96年7月。

【8】 涂耀賢，「低矮型RC牆暨構架之側向載重位移曲線預測研究」，博士論文，國立台灣科技大學營建工程系，台北，民國94年1月。

【38】 Lee H. J. and Hwang S. J. and Tsai C. H. and Hwang J. S., “Seismic Evaluation of Existing Reinforced Concrete Building-Shaking Table Tests and Pushover Analysis, ” The 6th Japan-Korea-Taiwan Joint Seminar on Earthquake Engineering for Building Structures (SEEBUS 2004), Taipei, Taiwan, November. 2004.

【1】 Hwang, S. J., and Lee, H. J., “Strength Prediction for Discontin Regions by Softened Strut-and-Tie Model, ” Journal of Structural Engineering, ASCE, Vol.128, No. 12, December, 2002, pp. 1519-1526.

【2】 ACI Committee318, “Buliding Code Requirements for Structural Concrete (ACI 318-05) and Commentary (ACI 318R-05),”American Concrete Institute, Farmington Hills, 2005.