Traditional steel ties reinforcement cannot provide superior confinement for reinforced concrete (RC) columns due to the constraints on tie spacing and disturbance of continuity. This paper presents a practical configuration consisting single Expanded Metal Mesh (EMM) layer in additional regular reinforcement. The EMM is warped above ties. proposed transverse reinforcement, with various volumetric ratios ties, was investigated sixteen square short RC column specimens categorized two groups...

Abstract The existence of diverse modeling approaches for masonry-infilled frames causes uncertainty among practicing engineers when seeking a definitive model their design practice. This paper presents practical and simple approach to the frames. proposed models plasticity in beams columns reinforced concrete (RC) using flexural plastic hinges while masonry panel as nonlinear equivalent strut. implementation hinge is based on discretizing frame cross-section into fibers utilizing popular...

This paper presents comparative study for seismic provisions of four building codes (Egyptian Code Loads ECL 2012, Eurocode 8-2013, IBC 2015 and UBC 1997) to the prevailing multistory residential reinforced concrete buildings comprising shear-walls (SW) located in Cairo-Fayoum zone. Ten-story twenty-story were analyzed using equivalent static load method (ESL) modal response spectrum (MRS). Simplified time approach (STA) realistic (RTA) adopted estimating fundamental period (T). The base...

Abstract Recently, various types of steel meshes were used as additional internal reinforcement for improving the confinement, ductility, and strength reinforced concrete (RC) columns. In this experimental study, a welded wire mesh (WWM) layer was an in addition to traditional (longitudinal bars transverse ties) short long RC columns under concentric eccentric compression. Thirty-six square with two slenderness ratios λ (height width ratio) 9 18 tested compression eccentricity e/t...

Tubular steel sections are widespread all over the world because of their strength and aesthetic appearance. members may exhibit local buckling such as elephant foot or overall under extreme compression load. Recently, external bonding fiber reinforced polymers (FRP) sheets for strengthening these has been explored through experimental research. This paper presents three-dimensional nonlinear finite element analysis (FEA) to investigate structural behavior tubular with FRP against phenomena....

The numerical modeling of structures is a widely preferable approach to investigate the structural behavior RC beams since it delivers inexpensive predictions for confirming required goals concurrently with reducing casting, testing time, and effort. Shear-strengthening reinforced concrete (RC) using externally bonded (EB) fiber-reinforced polymers (FRPs) has attracted much attention due fact that FRP strengthening technique ability alter distribution stresses between elements increase...

Abstract The structural behavior prediction of the multistory reinforced concrete (RC) buildings with masonry infill walls (MIWs) during earthquakes is challenging. This paper presents a nonlinear macromodeling strategy seeking simple, reliable, and low-cost computational analysis RC that comprise MIWs, use frames or shear (SWs) for resisting lateral load. employed four plastic hinge (PH) models tracking deformations (flexural, shear, torsion) frame elements joints, multilinear link modeling...

Investigating the nonlinear behavior of reinforced concrete (RC) elements was objective many experimental and numerical studies. This work briefly presents previous done in support modeling to evaluate their structural behavior. Modeling RC requires reliable models for inelastic positions under high loading. These are conformed as concentrated plasticity. For simulating frames, plasticity used studies provide simple with low computation cost. The is modeled using lumped plastic hinges (PH)....

The flexural plastic hinge (PH) length is a critical parameter for reinforced concrete (RC) frames subjected to lateral load.In this work, review of past studies introducing empirical equations estimating the PH (lp) RC was introduced.Another key aspect explored in paper study effect different available lp on overall nonlinear structural response frames.Therefore, ten were selected from simulating behavior two with experimental data.Each frame analyzed times alternative values under pushover...

Considerable number of experimental and numerical studies have been carried out to investigate performance reinforced natural-coarse aggregate concrete deep beams. In contrast, limited conducted examine the behavior recycled-coarse Up this end, main objective study is develop a finite element model accurately simulate beams when used with various ratio steel fibers. model, appropriate structural elements constitutive laws are employed plain concrete, loading plates reinforcing steel. The...

The research reported in this paper presents an attempt to improve the modeling of imperfections steel structures using a finite-element approach with particular discretization. This approach, termed modified beta method (MFEM-β), is improvement scheme that can handle displacement discontinuity. In MFEM-β, multilinear isotropic hardening model implemented, random imperfection procedure proposed, and failure treatment adopted. reviews progression original scheme, proposed procedure, uses...