ENGINEERING AND APPLIED SCIENCE RESEARCHVolume 46, No. 01, Month JANUARY, Year 2019, Pages 18 - 25
Modified interactive strut-and-tie model for shear strength prediction of rc corbels
Panatchai Chetchotisak, Parin Rulak, Jaruek Teerawong
Abstract Download PDFOn the basis of the modified Kupfer and Gerstle’s biaxial failure criterion of concrete, a modified interactive strut-and-tie model (MISTM) to predict the nominal shear strength of RC corbels was derived and is proposed in this paper. The MISTM includes the interaction between the load-carrying capacity of a concrete strut and a tension tie, and the effects of horizontal force. The number of horizontal and vertical stirrups was considered. To validate and calibrate the MISTM, a dataset test results for 302 corbels was collected from the literature. Finally, the predictions obtained from the MISTM were also compared with those computed using the strut-and-tie models in accordance with the ACI 318 code and the state-of-the-art presented in the literature, and are found to be more accurate and reliable.
Corbels, Shear strength, Strut-and-Tie, Reinforced concrete