Experimental Study on Shear Strength of SRC Deep Beams

• Main Author: 林佳宏
• Other Authors: 翁正強
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/00317075280619136271

碩士 === 國立交通大學 === 土木工程系 === 89 === A series steel reinforced concrete（SRC）specimens were tested with vertical monotonic load to study the mechanical behavior of SRC deep beams. In addition, a new method for determining the shear strength of steel reinforced concrete deep beam is proposed in this paper. Experimental results show that the shear capacity of SRC and RC deep beams are mainly controlled by the tie-arch action. However, due to the existence of steel shape in SRC deep beams, the crack pattern and failure mode are significantly different from those an ordinary RC deep beam. Test results also reveal that using of shear stud on the steel flange and web has little improvement on the ultimate shear strength. However, the application of shear reinforcement and shear stud on the steel web is found to be helpful for improving the ductility of SRC deep beams. The proposed method is based on the concept of strength superposition. The component materials strength are determined by using the AISC-LRFD specification（1993）for steel portion and the strut-and-tie concept for RC portion. By comparing the proposed method with the test results available from the literature, it is found that the proposed method is capable of predicting the shear strength of steel reinforced concrete deep beams with sufficient accuracy.