The Flexural Behavior of High-Strength Concrete Beams Using High-Strength Steels

• Main Authors: Nan-Shian Lin, 林南賢
• Other Authors: Ing-jaung Lin
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/84906442104978502572

碩士 === 國立臺灣科技大學 === 營建工程系 === 96 === This study is to investigate the flexural behavior of high-strength concrete beams using high-strength steels. Sixteen specimens were tested to study the effects on flexural behavior of concrete strength (f'c), yielding strength of steels (fy), reinforcement radio (ρ) and section size (b*h). For high-strength concrete beams using high-strength steels, this study predicts the ultimate flexural strength and the midspan deflection of beams using the recommendations proposed by ACI Code [2], Leslie [3] and Carrasquillo [4]. This study also predicts the flexural crack width of beams using the recommendations proposed by Gergely and Lutz [6]. Test results indicate that the recommendations proposed by ACI Code [2] and Leslie [3] are conservative for predicting the ultimate flexural strength of beams. But the recommendations proposed by Leslie [3] are more conservative for predicting the ultimate flexural strength of beams. At service loads, the recommendations proposed by ACI Code [2] and Carrasquillo [4] can reasonably predict the midspan deflection of beams. This study also indicates that the crack width calculated using the recommendations proposed by Gergely and Lutz [6] will overestimate the flexural crack width of beams.