Shear resistance behavior of partially composite Steel-Concrete-Steel sandwich beams considering bond-slip effect

2020 ◽  
Vol 210 ◽  
pp. 110394 ◽  
Author(s):  
Wei Zhang ◽  
Zhenyu Huang ◽  
Zhanxia Fu ◽  
Xudong Qian ◽  
Yingwu Zhou ◽  
...  
Keyword(s):  
Shear Resistance ◽  
Sandwich Beams ◽  
Slip Effect ◽  
Bond Slip ◽  
Partially Composite ◽  
Composite Steel

scholarly journals Modelling of the shear resistance of self-stressed beams reinforced with FRP applying the Critical Shear Crack Theory

2021 ◽  
Vol 350 ◽  
pp. 00016
Author(s):  
Viktar Tur ◽  
Aliaksandr Varabei
Keyword(s):  
Shear Crack ◽  
Crack Opening ◽  
Shear Resistance ◽  
Experimental Investigations ◽  
Inclined Crack ◽  
Ultimate State ◽  
Bond Slip ◽  
Crack Theory ◽  
Dowel Action ◽  
Frp Bars

This paper presents a mechanical model of the shear resistance based on Critical Shear Crack Theory (CSCT) and its application for the checking of the shear ultimate state of self-stressed elements reinforced with FRP bars. The shear force, which is transmitted through the inclined crack by aggregate interlock, residual tensile strength, dowel action and inclined chord of the compression concrete, is calculated depending on the value of the inclined crack opening, determined according to the modified law “bond-slip” for FRP bars. The reliability of the proposed approach is confirmed by comparison both with the results of our own experimental investigations and with numerous research results by various authors.

Bond-slip effect in flexural behavior of GFRP RC slabs

2018 ◽  
Vol 193 ◽  
pp. 80-86 ◽  
Author(s):  
Omid Gooranorimi ◽  
Guillermo Claure ◽  
Wimal Suaris ◽  
Antonio Nanni
Keyword(s):  
Flexural Behavior ◽  
Slip Effect ◽  
Bond Slip ◽  
Rc Slabs

scholarly journals Bond-slip Effect in the Assessment of RC Structures Subjected to Seismic Actions

2015 ◽  
Vol 114 ◽  
pp. 792-799 ◽  
Author(s):  
Paulo Silva Lobo ◽  
João Almeida ◽  
Lúıs Guerreiro
Keyword(s):  
Slip Effect ◽  
Rc Structures ◽  
Bond Slip

Nonlinear Finite Element Analysis of FRP Strengthened RC Beams with Bond-Slip Effect

2017 ◽  
Vol 14 (03) ◽  
pp. 1750032 ◽  
Author(s):  
Prabin Pathak ◽  
Y. X. Zhang ◽  
Xiaodan Teng
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Structural Behavior ◽  
Slip Effect ◽  
Rc Beams ◽  
Element Analysis ◽  
Bond Slip ◽  
Research Findings ◽  
Parametric Studies

This paper investigates the structural behavior of fiber reinforced polymer (FRP) strengthened reinforced concrete (RC) beams by developing a new simple, efficient and accurate finite element model (FEM-B). In addition to the FRP, concrete and steel rebars, the adhesive and stirrups which have been generally ignored in the reported models from literatures are considered in the new models. At first, a finite element model (FEM-P) is developed assuming perfect bond between concrete, FRP and adhesive interfaces. Then the FEM-P model is expanded to form the FEM-B model by including the bond-slip effect between concrete, FRP and adhesive interfaces. The developed new finite element models (FEM-B and FEM-P) are validated against experimental results and demonstrate to be effective for the structural analysis of FRP strengthened RC beams. Furthermore, parametric studies are carried out to learn the effects of types and thickness of FRP on the structural behavior of FRP strengthened RC beams based on the FEM-B model. The research findings are summarized finally.

scholarly journals Design value of a headed stud shear resistance in composite steel – concrete beams – probability-based approach to evaluation

2018 ◽  
Author(s):  
Mariusz Maslak ◽  
Tomasz Domanski
Keyword(s):  
Concrete Beams ◽  
Standard Procedure ◽  
Concrete Strength ◽  
Random Variable ◽  
Shear Resistance ◽  
Independent Random Variables ◽  
Safety Level ◽  
Design Value ◽  
Headed Stud ◽  
Composite Steel

Conventional standard procedure used to determine the design value of a headed stud shear resistance in composite steel-concrete beams is very simple but, in fact, mathematically incorrect, particularly in the case when such connector is automatically welded and when it is working in a solid slab. According to this approach the considered value is specified as a minimum of two separate design values. One of them is related to the resistance of the stud itself while the other is associated with the failure of the surrounding concrete. In the paper presented by the authors a new algorithm which allow to evaluate this value is recommended and discussed in detail. It seems to be more accurate because it is based on the fully probabilistic inference. In such approach a new random variable is introduced, being a minimum of two other, statistically independent, random variables. Analogously as it is in the concept previously mentioned, the first random variable quantifies now the steel stud shear resistance whereas the second one – the resistance of the adjacent concrete. Consequently, the sought design value is determined as a suitable quantile of this new random variable, characterized by log-normal probability distribution. It is shown that the design value of a headed stud shear resistance, calculated in this manner, strongly depends on the variability of strength parameters, relating both to the steel of which the connecting stud is made and to the concrete of the slab. In addition, it is found that in the case when the variability of concrete strength is too high, the safety factor recommended to use in European standards is not able to provide the required safety level, acceptable by the building users. The considerations presented in the article are illustrated by a detailed computational example.

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