Shear Strengths of Reinforced Concrete Deep Beams with Different Shear Span-to-Depth Ratios

• Main Authors: Ming-Chieh Hsieh, 謝明杰
• Other Authors: Ing-Jaung Lin
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/52686519159130558424

碩士 === 國立臺灣科技大學 === 營建工程系 === 92 === This study presents an experimental investigation of reinforced concrete deep beams subjected to vertical loads. Twelve specimens were tested to study the effects on ultimate shear strengths of deep beams of concrete strength (f’c), way of loading (through steel plates or column stubs), shear span-to-effective depth ratio (a/d) and horizontal shear reinforcement (Ah). For specimens with a/d=0.61, test results indicate that the ultimate shear strengths calculated using ACI318-02 Code【2】 are overly conservative and the design recommendations proposed by Hwang and Lee【1】 can more accurately predict the shear strengths of reinforced high-strength concrete deep beams. For specimens with a/d=1.28 and without vertical shear reinforcement, test results, however, indicate that the ultimate shear strengths calculated by Hwang and Lee【1】or by ACI318-02 Code【2】may not be conservative.