Serviceability Analysis of Flexural Reinforced Concrete Members / Lenkiamųjų Gelžbetoninių Elementų Tinkamumo Analizė

Abstract

The paper presents a simple discrete crack model for analyzing the deformation and crack width of reinforced concrete beams. The model is based on a non-iterative algorithm and uses a rigid-plastic bond-slip law and elastic properties of materials. Curvatures and crack widths predicted by the proposed technique were checked against the test results of six experimental beams, reported by the authors and other investigators. The article also proposes and discusses a numerical procedure for deriving the average bond stress with reference to the test data. Serviceability analysis resulted in a reasonable agreement on the test measurements. Santrauka Straipsnyje pateikiamas supaprastintas diskrečiųjų plyšiu modelis gelžbetoninių sijų deformacijų ir plyšio pločio analizei. Modelis pagrįstas neiteraciniu algoritmu, remiantis standžiai plastiniu sukibimo desniu ir tampriosiomis medžiagų savybėmis. Remiantis skirtingų autorių atliktais eksperimentiniais duomenimis, modelis patikrintas skaičiuojant gelžbetoninių sijų kreivius ir plyšio pločius. Apskaičiuotos kreivių ir plyšio pločių reikšmės gana tiksliai sutapo su eksperimentiniais rezultatais. Taip pat pasiūlytas originalus vidutinių sukibimo įtempių apskaičiavimo metodas, remiantis eksperimentiniais lenkiamujų gelžbetoninių sijų bandymo rezultatais.

Design of FRP Reinforced Concrete Beams for Serviceability Requirements

“…Adequate account of the serviceability behavior and the parameters involved in the post-cracking behavior is of major importance for the design of RC structures (Bischoff 2007;Baena et al 2011;Gribniak et al 2010;Kaklauskas et al 2012). Due to the mechanical properties of FRP materials, the Serviceability Limit States (SLS) may govern the design of FRP RC elements (ISIS Canada 2001;Matthys, Taerwe 2000;Nanni 2003;Saikia et al 2007;Rafi, Nadjai 2009).…”

Serviceability Analysis of Reinforced Concrete Members Based on Stress Transfer Approach

“…no physical slip is allowed. This simplification is reasonable in load bearing capacity analysis, however becomes unacceptable when serviceability of RC structures is considered [1]. For serviceability analysis, stress transfer (also called force transfer, or partial interaction) approach seems to be an attractive alternative to commonly used code techniques, as it realistically reflects the nature of RC, bond-slip mechanics, development of cracks and the effect of tension stiffening.…”

Bond characteristics of reinforced TMT bars in Self Compacting Concrete and Normal Cement Concrete

“…Generally the design of RC structures is based on the assumption of full interaction through concrete and reinforcement interface that is without physical slip and it is reasonable in load bearing capacity analysis, however becomes unacceptable when serviceability of RC structures is considered [8]. A study [9] represents exponential bond stress distribution function and developed an analytical procedure for prediction of deformation and progressive cracking of tensile RC specimens.…”