Numerical nonlinear analysis of RC beans with un-strengthened and CFRP-strengthened opening drilled under service loads within shear zones

Current research paper deals with reinforced concrete (R.C.) beams numerical modeling and suggested strengthening procedure if it is required to create an opening within their shear zones. Strengthening assumed be achieved during different service load application conditions. Reinforced Concrete rectangular or circular in zone; as critical regions; sustain two concentrated system of loads are tested till failure before after performing assessing technique by means Carbon Fibers Polymer sheets (CFRP). The main aim this simulating real practice situation where the beam subjected loads, supported temporary hydraulic jacks, created performed then jacking supports released. Results nonlinear introduced influence achieving on improving assessed almost structural behavior such initial cracking deflection curves, patterns, & modes for reference (without opening), un-strengthened control beams, CFRP strengthened analyzed details. Some important conclusions recommendations designer executive engineers stated.