Numerical investigation Of Reinforced Concrete Deep Beam With Web Opening Strengthen With Ultra High Performance Concrete

Abstract

Deep beam is an important structural element that have recently increased in use in concrete buildings, such as tall buildings to offshore gravity structures . We often need to make web opening in Deep beam . These openings reduce the maximum bearing capacity of the deep beam , that why we need to strengthen it , There are several strengthen materials in this research we will use Ultra High Performance Concrete (UHPC) . In this thesis , I study five reinforcement concrete Deep beam , one is control without web opening and other with web opening , from “Jasim, W. A., et al. (2018)” numerically by ABAQUS , comparing the results Experimental test with ABAQUS result , After approving the results of the program same with Experimental test . I put my parameter “ UHPC thickness 30mm & 20 mm and location of the layer at full grove face two side , four layer two for each side , and effect of no shear stirrups “ , properties of UHPC from [Bahraq, Ashraf Awadh, et al. 2019}. The result is , web opening reduce ultimate failure load 27% average . Displacement for deep beam with web opening at edge span is greater than at mid span 15% for the same open size . Used UHPC as strengthen material is good and increase the ultimate failure load 20- 37% for deep beam with web opening . Shear bars can replaced by full UHPC layer from two face with 30mm minimum depth and gave more ultimate load and displacement .