نتایج جستجو برای: finite element method retrofitting reinforced concrete beam steel
تعداد نتایج: 2161972 فیلتر نتایج به سال:
The American NEES Consortium Inc. (NEESinc) has performed a seismic research project around an uniaxial shaking table test on a structure representing a full-scale vertical slice of a 7-story reinforced concrete wall building. This paper deals with the numerical strategy adopted in the laboratory 3S-R for a ‘‘blind’’ simulation of the non linear behaviour of the specimen. Multifiber Timoshenko ...
This work proposes a methodology for non destructive testing (NDT) of reinforced concrete structures, using superficial magnetic fields and artificial neural networks, in order to identify the size and position of steel bars, embedded into the concrete. For the purposes of this paper, magnetic induction curves were obtained by using a finite element program. Perceptron Multilayered (PML) ANNs, ...
in this paper the response of cantilevered reinforced concrete (rc) beams with smart rebars under static lateral loading has been numerically studied, using finite element method. the material used in this study is superelasticshape memory alloys (se smas) which contains nickel and titanium elements. the se sma is a unique alloy that has the ability to undergo large deformations and return to t...
In this study, Finite Elements Method was used for the nonlinear analysis of reinforced concrete plates under gradually loading conditions beginning from zero load to failure load. Layered Composite Material Model was used for the modeling of reinforced concrete plates. The principles of this approach is given in “layered composites mechanics” that it was successfully applied for the nonlinear ...
corrosion of steel reinforcement is one of the most prevalent causes of reinforced concrete (rc) structures deterioration in chloride-contaminated environments. as a result, evaluating the impact of any possible corrosion-induced damages to reinforced concrete bridges strongly affects management decisions: such as inspection, maintenance and repair actions. the corrosion propagation phase is a ...
Continuously reinforced concrete pavement (CRCP) performance depends primarily on early-age cracks that result from changes in temperature and drying shrinkage. This report presents the findings of a study of the early-age behavior of CRCP in response to temperature change using a three-dimensional finite element model. The nonlinear effects of the bond slip between concrete and steel and betwe...
Fiber reinforced Polymers (FRP) have widely used for the purposes of enhances strength and ductility of concrete columns. Proper design of such hybrid columns, however, requires a better recognition of the behavior of concrete columns confined with FRP. In this paper, the influence of FRP thickness, concrete compressive strength, and column size on the performance of eccentrically loaded reacti...
This paper investigates experimentally and analytically the torsion behavior of steel fibered high strength self compacting concrete beams reinforced by GFRP bars. Steel fibered high strength self compacting concrete (SFHSSCC) and GFRP bars became in the recent decades a very important materials in the structural engineering field. The use of GFRP bars to replace steel bars has emerged as one o...
In concrete pavements, a single concrete mixture design is selected to resist mechanical loading without attempting to adversely affect the concrete pavement shrinkage, ride quality, or noise attenuation. An alternative approach is to design distinct layers within the concrete pavement surface which have specific functions thus achieving higher performance at a lower cost. The objective of this...
در این پژوهش ابتدا مروری بر تحقیقات گذشتگان با موضوع تاثیر خوردگی آرماتور بر رفتار سازه های بتن مسلح صورت می پذیرد. همانطور که مشخص است از مهمترین تبعات منفی پدیده خوردگی آرماتور در سازه های بتن مسلح خرابی پیوستگی فولاد و بتن می باشد به همین دلیل یک مدل جدید برای سخت شوندگی کششی بتن معرفی می شوند این مدل می تواند اثرات رفتار لغزش –پیوستگی و خوردگی آرماتور را در برگیرد مدل پیشنهادی منحنی تنش کرن...
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