نتایج جستجو برای: finite element method retrofitting reinforced concrete beam steel
تعداد نتایج: 2161972 فیلتر نتایج به سال:
The present Experimental investigation is to study the Impact Resistance of the Fly ash concrete reinforced with steel fibers. The concrete composite comprises of steel fibers in different percentages and partial replacement of cement in different proportions. Steel fibers varied from 0%, 0.5%, 1% and 1.5% by weight of cement and replacement of fly ash varied from 0%, 10%, 20%, 30% and 40% by w...
In order to study the concrete damage in sticked side-plated reinforced beam under static load, a common and were designed conduct finite element comparison experiments. The results show that compared with ordinary beams, bearing capacity of is significantly improved, range tensile reduced. It further verifies method effective reducing damage.
For reducing the structural damage against blast loading, fiber reinforced polymers sheet (CFRP, GFRP) can be used for retrofitting the RC slabs. In this study specimens of reinforced concrete slabs with or without retrofitting are modeled numerically. The results show that the using of high resistant, elastic material such as FRP sheets, are effective in reducing the deformation of the slabs, ...
A new plastic hinge integration method overcomes the problems with nonobjective response caused by strain-softening behavior in force-based beam–column finite elements. The integration method uses the common concept of a plastic hinge length in a numerically consistent manner. The method, derived from the Gauss–Radau quadrature rule, integrates deformations over specified plastic hinge lengths ...
In this study, twenty glass fiber reinforced polymer (GFRP) reinforced concrete specimens were modelled using finite element method to predict the effect of GFRP compressive bars on the flexural strength and ductility of GFRP reinforced concrete beams. Also, the contribution of GFRP longitudinal rebars to the load-carrying capacity of reinforced concrete columns is determined. The concrete elas...
Adding steel fibers to a concrete matrix enhances the shear capacity of reinforced beams. A comprehensive understanding this phenomenon is essential evaluate engineering designs accurately. The Steel Fiber Reinforced Concrete (SFRC) beams affected by many parameters, such as ratio span effective depth SFRC beam, compressive strength concrete, longitudinal reinforcement ratio, volume fraction, a...
Analytical and numerical modeling of erosive projectiles into steel fiber reinforced concrete target
In this paper, modeling of high speed projectiles with different nose shapes, penetrating into steel fiber reinforced concrete is investigated. This is a novel study because it considers the length to diameter ratio of steel fiber as well as projectile length to diameter ratio and volume fraction of fiber used in concrete matrix on the impact resistance of steel fiber reinforced concrete fibers...
a comparison between design codes i.e. aci and aisc-lrfd in evaluation of flexural strength of concrete filled steel tubular columns (cfts) is examined. for this purpose an analytical study on the response of cfts under axial-flexural loading is carried using three-dimensional finite elements with elasto-plastic model for concrete with cracking and crushing capability and elastoplastic kinemati...
Abstract The finite element simulation was performed for 8 carbon fiber reinforced plastic (CFRP) sheets steel-concrete composite beams via ABAQUS software, in an effort to further investigate their mechanical properties. Next, the influences of shear connection degree and elasticity modulus, width constitutive relation CFRP on properties were studied. Subsequently, load-dependent change laws m...
coupled -shear walls are one of lateral load resisting systems in high and medium rise reinforced concrete buildings. the lateral structural response is exactly dependents on the shear walls behavior; therefore these elements must response well whenundergodifferent load conditions. the structures located in near-source region behave differently compared to those in near-source sites when subjec...
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