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題名 | Numerical Simulation of Pull-Out Anchor Bolts=有限元素法應用於錨定螺栓拉出試驗之研究 |
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作者姓名(中文) | 莊財福; | 書刊名 | 明道學術論壇 |
卷期 | 2:1 民95.07 |
頁次 | 頁79-89 |
分類號 | 441.1 |
關鍵詞 | 有限元素法; 錨定螺栓; 拉出試驗; 混凝土裂縫模型; |
語文 | 英文(English) |
中文摘要 | 本文提出一個混凝土裂縫模型(cracking model)用來模擬錨定螺栓的拉出行爲。此一數值模型是以FORTRAN電腦語言寫成,經編譯無問題後,再連結於有限元素法軟體LUSAS之主程式上。而實驗數據則採用Ohlsson和Elfgren所進行的拉出試驗。本研究的數值分析中,採用了二維的平面應力模型(Two-dimensional plane stress models),而荷重則採用位移控制(displacement control)來進行。在鋼筋和混凝土之間的連結材料的模擬上,本文假設爲完全結合(full bond)。研究結果顯示數值裂縫圖形和荷重-撓度的曲線均顯示本數值模型與模擬方式合理與實驗結果相當吻合。 |
英文摘要 | In this paper, a cracking model was used to model the behavior of pull-out anchor bolts. This model has been implemented into a FE program (LUSAS 2004) to simulate the pull-out behavior. A pull-out test peformed by Ohlsson and Elfgren (1989) has been chosen for comparison. They have completed a series of tests in order to check fracture mechanics procedures for the analysis of anchor bolts. Two-dimensional plane stress models are used to analyse the test specimens. The load was applied in displacement control at the bottom surface of the anchor head, Perfect bond between steel and concrete was assumed on the upper edge on the anchor head where large compressive stresses occur. No bond between steel and concrete was assumed anywhere else. The numerical crack patterns and load-deflection curves have shown reasonable agreement with the experimental work. |
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