Ferrocement Steel-Plate Composite Beams

1975 ◽  
Vol 72 (3) ◽  
Keyword(s):  
Steel Plate ◽  
Composite Beams

scholarly journals Experimental and Numerical Evaluation of Perfobond Rib Shear Connectors Embedded in Recycled Aggregate Concrete

2020 ◽  
Vol 2020 ◽  
pp. 1-16
Author(s):  
Zhenxuan Yu ◽  
Shaohua He ◽  
Ayman S. Mosallam ◽  
Shuo Jiang ◽  
Wenxian Feng
Keyword(s):  
Steel Plate ◽  
Plate Thickness ◽  
Composite Beams ◽  
Numerical Results ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Aggregate Concrete ◽  
Shear Connectors ◽  
Steel Rebar ◽  
Plate Fracture

In this paper, the use of recycled aggregate concrete (RAC) for the upper slabs in steel-concrete composite beams is proposed. Perfobond rib connector (PBL), a relatively new type of shear connectors, has been widely used to ensure composite action between the steel and concrete elements in composite beams. For the past decades, several studies on assessing the performance of PBLs have been conducted, but very few focused on the PBLs that are embedded in RAC slabs. This paper presents results of an experimental and numerical simulation study that focused on characterizing the behavior of PBL fabricated using RAC. In the experimental program, a total of six standard push-out specimens, divided into three groups, were fabricated and loaded to failure. Test results indicated that the ductility of the PBLs using RAC materials decreased as the perforated steel plate thickness decreased, while the PBL ultimate strength increased by 4.3% and 12.8% for steel plate thicknesses of 10.0 mm and 12.0 mm, respectively, as compared to specimens with 8.0 mm steel plate thickness. Finite element (FE) models for PBLs embedded in RAC were developed, and numerical results were validated by corresponding experimental results. An extensive parametric numerical analysis was conducted to assess the effects of different parameters such as transverse steel rebar diameter and perforated steel plate strength and thickness on the performance of such connectors. Numerical simulation results showed that the PBL ultimate strength obtained based on the perforated plate fracture failure mode increases linearly as the steel rebar diameter increases. Also, numerical results indicated that as steel plate strength and thickness increase, failure mode changes from steel plate fracture to rupture of reinforced concrete dowels. Furthermore, existing published analytical formulas for predicting behavior of PBLs were assessed via a comparison with experimental and numerical results developed in this study. The outcomes of this study contribute in providing fundamental knowledge in a new sustainable application of PBL in steel-concrete composite beams with RAC slabs.

Flexural behaviour of steel plate-masonry composite beams

2012 ◽  
Vol 13 (2) ◽  
pp. 123-137 ◽  
Author(s):  
Deng-Hu Jing ◽  
Shuang-Yin Cao ◽  
Lei Shi
Keyword(s):  
Steel Plate ◽  
Composite Beams ◽  
Flexural Behaviour

scholarly journals Numerical Modelling Of The Strengthening Process Of Steel-Concrete Composite Beams

2015 ◽  
Vol 19 (4) ◽  
pp. 99-110 ◽  
Author(s):  
Piotr Szewczyk ◽  
Maciej Szumigała
Keyword(s):  
Numerical Modelling ◽  
Bearing Capacity ◽  
Composite Beam ◽  
Steel Plate ◽  
Composite Beams ◽  
Steel Beam ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Main Assumption ◽  
The Cost

Abstract This paper presents the numerical modelling of strengthening a steel-concrete composite beam. The main assumption is that the strengthening is not the effect of the state of a failure of a structure, but it resulted from the need to increase the load-bearing capacity and stiffness of the structure (for example: due to a change in the use of the object). The expected solution is strengthening without the necessity to completely unload the structures (to reduce the scope of works, the cost of modernization and to shorten the time). The problem is presented on the example of a composite beam which was strengthened through welding a steel plate to the lower flange of the steel beam. The paper describes how energy parameters are used to evaluate the efficiency of structures’ strengthening and proposes an appropriate solution.

Nonlinear Analysis of Prestressed Cold-Formed U-Shaped Steel and Concrete Composite Beams

2012 ◽  
Vol 594-597 ◽  
pp. 749-752
Author(s):  
Jian Jun Yu ◽  
Lian Guang Wang
Keyword(s):  
Theoretical Analysis ◽  
Bearing Capacity ◽  
Nonlinear Analysis ◽  
Experimental Research ◽  
Composite Beam ◽  
Steel Plate ◽  
Flexural Rigidity ◽  
Concrete Strength ◽  
Composite Beams ◽  
Analysis Mode

Cold-formed U-shaped steel and concrete composite beam is a kind of composite beam which the steel and the concrete are integrated by welding connections on the cold-formed U-shaped steel and then pouring concrete on the steel. Now, many experts and scholars have carried out many experimental research and theoretical analysis about it. But, prestressed Cold-formed U-shaped steel and concrete composite beams have not been studied. Based on the structure , the nonlinear analysis mode of prestressed cold-formed U-shaped steel and concrete composite beams is proposed, the calculating program is researched. The calculating results show that the bearing capacity of composite beam increases with the increments of thickness of steel plate and concrete strength, and the thickness of steel plate has a larger effect than the width of the flange plate of concrete, applying prestress can enhance the bearing capacity and flexural rigidity of the composite beam.

scholarly journals The Assessment of the Slip Influence on the Deflection of the Steel Plate-Concrete Composite Beams

2016 ◽  
Vol 62 (2) ◽  
pp. 59-76 ◽  
Author(s):  
D. Kisała ◽  
K. Furtak
Keyword(s):  
Theoretical Analysis ◽  
Steel Plate ◽  
Experimental Studies ◽  
Composite Beams ◽  
Design Concept ◽  
New Type ◽  
Interface Slip

Abstract The aim of this paper is to present an assessment of the slip influence on the deflection of the steel plate-concrete composite beams, which are a new type of a design concept. The proposed method is based on the procedure included in the PN-EN 1992-1-1, which has been modified with taking into consideration interface slip. The theoretical analysis was verified by experimental studies.

scholarly journals Flexural Strengthening of Reinforced Concrete Beams with Mechanically Bonded Steel Plates

2021 ◽  
Author(s):  
Syed Ali Kashif
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Model ◽  
Steel Plate ◽  
Great Influence ◽  
Element Model ◽  
Composite Beams ◽  
Design Guidelines ◽  
Reinforced Concrete Beams ◽  
Design Procedures

Steel plate bonding technology is widely accepted for the strengthening of reinforced concrete structures. Researches in the past showed that epoxy bonded steel plated composite beams are highly prone to variation in temperature and environmental conditions. This research study introduces a novel approach to steel plate composite beam in which bond between the concrete and the steel plate is provided by welding the steel plate to the legs of the uniformly spaced stirrups. Experimental investigation showed that the parameters such as interface connections, geometric dimensions, stirrups spacing and thickness of steel plate have a great influence on the strength, deformation and failure characteristics of such composite beams. A finite element model has been developed using commercial software, ABAQUS, to predict the strength of such composite beams and its performance is validated through experimental results. The direct finite element simulation of proposed composite beams with developed finite element model gives an average of experimental to predicted strength ratio of 0.99, which comfirms the accuracy of prediction. The finite element model is then used to simulate a large number of numerical beams with varying geometric and material properties to formulate design guidelines. Design charts are developed and their performance is validated through test results with experimental to design chart predictions giving an average value of 0.94. Design procedures for such beams are illustrated with calculated design examples. Such simple design procedures can be adopted in the actual design of proposed composite beams in practical applications.

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