scholarly journals Sustainable high strength steel flush end plate beam-tocolumn composite joints with deconstructable bolted shear connectors

2015 ◽  
Author(s):  
Abdolreza Ataei ◽  
Mark A. Bradford ◽  
Hamid R. Valipour
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Composite Joints ◽  
Shear Connectors ◽  
End Plate

Review on High Strength Steel Bolted End-Plate Connections

2015 ◽  
Vol 744-746 ◽  
pp. 265-273
Author(s):  
Xi Yu Wang ◽  
Yong Feng Luo ◽  
Xu Hong Qiang ◽  
Xiao Liu
Keyword(s):  
High Strength Steel ◽  
Structural Engineering ◽  
Mechanical Performance ◽  
Rapid Development ◽  
Steel Structures ◽  
High Strength ◽  
Design Standards ◽  
Existing Problems ◽  
End Plate ◽  
Plate Connections

Past three decades have seen the rapid development of high strength steel (HSS) in its application in structural engineering. However, so far the mechanical performance of a HSS beam-to-column connection has not been systematically studied, especially for bolted end-plate connections, the commonly employed beam-to-column connections in steel structures, which could restrict the application of HSS. Therefore, this paper aims to represent the basic methods, current achievements, recent applications, and the existing problems that lie in the way. In doing so, this paper is composed of three parts, experimental results, numerical analysis as well as component method. At the end, this paper indicates that future investigation should be based upon experimental analysis and proper finite element modeling, to verify a numerical model and to refine design standards.

Sustainable and Deconstructable Semi-Rigid Flush End Plate Composite Joints

2014 ◽  
Vol 553 ◽  
pp. 557-563 ◽  
Author(s):  
Abdolreza Ataei ◽  
Mark A. Bradford
Keyword(s):  
Concrete Slab ◽  
Load Capacity ◽  
Steel Beam ◽  
Composite Joints ◽  
Fe Modelling ◽  
Shear Connectors ◽  
End Plate ◽  
Composite Systems ◽  
Composite Joint ◽  
Non Linear

Composite construction is a popular and effective method of construction, exploiting the strengths of both reinforced concrete and structural steel in building construction in a complementary fashion. Within paradigms related to minimisation of emissions and maximisation of product recycling, these composite systems are problematic on a number of fronts. Firstly, common and traditional composite systems utilise ordinary Portland cement, which is known to be a very large contributor to atmospheric CO2 emissions. Secondly, for typical construction practices for steel-concrete composite systems, casting of the concrete onto profiled steel decking and conventional reinforcement placing are undertaken on-site, which is time consuming and labour intensive, and which can increase the cost of construction. Thirdly, composite action between the steel beam and the concrete slab is usually achieved by using headed shear studs. The headed shear studs connect these two elements permanently, which leads to much waste at the end of the service life of the building when it is demolished. This paper models a sustainable semi-rigid beam-to-column composite blind bolted connection with deconstructable bolted shear connectors using ABAQUS finite element (FE) software. In this “green” system, precast geopolymer concrete (GPC) slabs are attached compositely to the steel beam via pretensioned bolted shear connectors and the composite beam is connected to GPC-filled square columns using blind bolts. Non-linear material properties and non-linear geometric effects are considered in the simulation of a connection in hogging bending. Based on the FE modelling, using pretensioned bolts as shear connectors with GPC can improve the behaviour of semi-rigid flush end plate composite joints in terms of ductility and load capacity. Moreover, the behaviour of the bolted shear connectors should be considered in composite joint design as being very different to headed stud connectors.

Static behavior of stud shear connectors in high-strength-steel–UHPC composite beams

2020 ◽  
Vol 218 ◽  
pp. 110827
Author(s):  
Lewei Tong ◽  
Luhua Chen ◽  
Ming Wen ◽  
Chen Xu
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Composite Beams ◽  
Static Behavior ◽  
Shear Connectors

Structural behavior of shear connectors embedded in different types of concrete

2020 ◽  
Vol 6 (4) ◽  
pp. 160
Author(s):  
Adil Hadi Wardi ◽  
Gökhan Tunç ◽  
Khalil Ibraheem
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Normal Weight ◽  
Structural Behavior ◽  
Concrete Walls ◽  
Shear Connectors ◽  
Reinforced Concrete Walls ◽  
Different Types ◽  
Reactive Powder ◽  
Push Out

Push-out tests are used to determine shear connectors’ properties where two small reinforced concrete walls are attached to the top and bottom flanges of an I-section through four shear studs located on both its flanges. In this study, the structural behavior of shear connectors was examined by testing a total of 36 push-out specimens. In these specimens, various test parameters were used. The types of shear connectors and their strengths, their connection types, and the strength of the concrete in which they were embedded were all investigated. Headed, L-shaped, and C-shaped studs were selected in this experimental study to represent different types of shear connectors. These shear connectors were assumed to be either ordinary or high strength steel-embedded in three different types of concrete: ordinary, high strength, and reactive powder concretes. In these tests, the shear connectors were connected through welding or epoxy bonding. The objective of this study was to investigate the structural behaviors of these different types of shear connectors by focusing on their shear force capacities and slip values. The test results indicate that the reactive powder concrete increased the mechanical properties of concrete as the concrete age increased. The specimens with C-shaped studs made of high-strength steel with welded studs embedded in normal weight, high strength and reactive powder concretes, generated the maximum shear resistance values.

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