Effect of Laying Service longitudinal and Transverse Openings on Reinforced Concrete Hollow Beam Web under Flexural Loadings

Abstract

Laying of service pipes such as sewage pipes, electricity pipes, and sometimes water pipes ducts and others had presented some problems especially if it gathered in one place. One of the best solutions to minimize the problems and solve the piping and other services is using longitudinal and transverse opening in beams (BLTO), especially when high strength concrete (HSC) is used. HSC beam that performed experimentally by a researcher and implemented in this study by finite element method. ANSYS software was utilized to prove the experimental results with using the same properties, geometry, materials, and conditions which the comparison included the force-displacement relationship ultimate load capacity, maximum displacement, and crack pattern. The verification process between the experimental program and theoretical one demonstrated that there is a good convergence between the obtained results between the two results. The similarity in the outcomes showed that the matching between the experimental and numerical in force by (99%) and in displacement by (94%). These variances were due to the small difference in the condition of experimental and theoretical side which the numerical considered ideal condition. Also, this study examined the behavior of (RC) beam have longitudinal and transverse opening. The registered failure mode of beam was flexural failure although of presence of shear cracks but the flexural cracks were the controller in the behavior.