scholarly journals Post-fire Behaviour of Innovative Shear Connection for Steel-Concrete Composite Structures

Structures ◽  
2017 ◽  
Vol 9 ◽  
pp. 147-156 ◽  
Author(s):  
Fidelis R. Mashiri ◽  
Olivia Mirza ◽  
Carlo Canuto ◽  
Dennis Lam
Keyword(s):  
Composite Structures ◽  
Fire Behaviour ◽  
Shear Connection

FIRE RESISTACE OF SHEAR CONNECTORS FOR COMPOSITE BEAMS

2020 ◽  
Vol 92 (6) ◽  
pp. 59-65
Author(s):  
G.P. TONKIH ◽  
◽  
D.A. CHESNOKOV ◽  
◽  
Keyword(s):  
Fire Resistance ◽  
Composite Structure ◽  
Composite Structures ◽  
Composite Beams ◽  
Design Codes ◽  
Connection Strength ◽  
Shear Connectors ◽  
Shear Connection ◽  
Capacity Reduction ◽  
Russian Research

Most of Russian research about composite structure fire resistance are dedicated to the composite slab behavior. The composite beams fire resistance had been never investigated in enough volume: the temperature evaluation within the scope of the actual Russian design codes leads to the significant reduction in the shear connection strength. Meanwhile, there no correlation between the strength decreasing and type of the shear connection. The article provides an overview of the relevant researches and offers some approaches which could take into account bearing capacity reduction of the shear connectors within composite structures design.

Full-scale tests on composite structures with low degree of shear connection

ce/papers ◽  
2017 ◽  
Vol 1 (5-6) ◽  
pp. 297-302
Author(s):  
Therese Sheehan ◽  
Xianghe Dai ◽  
Dennis Lam
Keyword(s):  
Composite Structures ◽  
Full Scale ◽  
Shear Connection ◽  
Low Degree ◽  
Full Scale Tests

scholarly journals A new type of hollow-shallow steel and concrete composite floor beam

2021 ◽  
Vol 15 (4) ◽  
pp. 65-73
Author(s):  
Vu Anh Tuan ◽  
Han Ngoc Duc ◽  
Nguyen Dinh Hoa ◽  
Nguyen Tran Hieu ◽  
Nguyen Trung Kien
Keyword(s):  
Composite Beam ◽  
Composite Structures ◽  
Concrete Slab ◽  
Raw Material ◽  
Secondary Beam ◽  
Shear Connection ◽  
Connected Surface ◽  
New Type ◽  
Development Orientation ◽  
The Cost

Recently in Vietnam, steel-concrete composite structures especially composite beams are widely constructed in high-rise buildings. To apply broader in construction field mainly in secondary beam systems, the new type of slim-floor composite beam is proposed to aim at reducing the cost, saving the raw material, and decreasing the overall floor depth for sustainable development orientation. This type of floor beam structure consists of built-up hollow-shallow steel beam mandatory connected with cast in situ concrete slab through the openings at both side of web along the beam. The shear connection level of composite beam is depended on not only the friction at the connected surface between hollow steel section and concrete but also the shear resistance of concrete dowels, which go through the openings. The paper deals with an innovative shape of cross-section and design philosophy of composite beam according to EN 1994-1-1.

scholarly journals Numerical and Experimental Analysis of a Shear Connection Made Using a Top-Hat Profile

2017 ◽  
Vol 26 (3) ◽  
pp. 69-78 ◽  
Author(s):  
Paweł Helbrych ◽  
Maciej Major ◽  
Jacek Nawrot
Keyword(s):  
Numerical Model ◽  
Experimental Research ◽  
Composite Structures ◽  
Concrete Slab ◽  
Ansys Software ◽  
Reinforced Concrete Slab ◽  
Material Parameters ◽  
Shear Connection ◽  
Shear Connections ◽  
Steel Shape

Abstract The paper proposed a numerical model of a shear connection between a reinforced concrete slab and a steel shape. The connection was made using a top-hat profile. A method for conducting experimental research on shear connections in the composite structures was presented. Geometric dimensions and material parameters of the analysed model of connection, on which the experimental research was conducted, were noted. The results of the conducted experimental research were compared to the results of the numerical analysis performed using ANSYS software. displecement curves were analysed for both cases and any correlation between experimental and numerical results was noted.

Composite Dowels: the Way to the New Forms Of Steel-Concrete Composite Structures

2020 ◽  
Author(s):  
W. Lorenc
Keyword(s):  
Composite Structures ◽  
Design Principle ◽  
Concrete Slab ◽  
Design Guidelines ◽  
Current Version ◽  
Shear Connection ◽  
Eurocode 2 ◽  
Composite Bridges ◽  
New Type ◽  
Connection Design

<p>The introduction of composite dowels in Europe at the beginning of the last decade led to the creation of new forms of composite bridges in which a T-profile is used instead of an I-beam. Both the construction and design methods are new. The paper presents the bridges using this new type of shear connection. The variety of forms and dynamic development of a new type of construction is presented. The development history and the latest shear connection design guidelines are summarized. Reference was made to the basic design principle for composite beams with the associated concrete slab: the omission of part of the transverse force transmitted by the concrete slab. To understand design basis for new forms is to deeply understand that they are beyond current version of Eurocode 4: "3 + 2 ≠ 4 and Eurocode 3 + Eurocode 2 ≠ Eurocode 4". The above in a good way reflects the sense of what new forms are and why their design is complicated.</p>

scholarly journals Experimental Investigation of a Slip in High-Performance Steel-Concrete Small Box Girder with Different Combinations of Group Studs

Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2781 ◽  
Author(s):  
Bishnu Gupt Gautam ◽  
Yiqiang Xiang ◽  
Xiaohui Liao ◽  
Zheng Qiu ◽  
Shuhai Guo
Keyword(s):  
Composite Structures ◽  
High Performance ◽  
Vital Role ◽  
Accelerated Bridge Construction ◽  
Continuous Beam ◽  
Box Girders ◽  
Test Beam ◽  
Simply Supported ◽  
Shear Connectors ◽  
Shear Connection

Due to the significant advantages of steel-concrete composite beams, they are widely used for accelerated bridge construction (ABC). However, there is still a lack of experimental research on the proper design of ABC, especially in the slip with a different group of shear connectors. As a component of steel-concrete composite structure, shear studs play a vital role in the performance of composite structures. This paper investigates the influence of group studs in simply supported and continuous box girders. To this end, three sets of simply supported steel-concrete composite small box girders and two continuous steel-concrete composite small box girders were made with different groups of shear studs, and the slip generated along the beams was recorded under different caseloads. The results were then compared with the proposed simplified equations. The results show that the slip value of the test beam is inversely proportional to the degree of shear connection. The slip of Simply Supported Prefabricated Beam-3 (SPB3) is 1.247 times more than Simply Supported Prefabricated Beam-1 (SPB1), and 2.023 times more than Simply Supported Prifabricated Beam-2 (SPB2). Also, the slip value of Experimental Continuous Beam-1 (ECB1) is 1.952 times more than Experimental Continuous Beam-2 (ECB2). The higher the degree of shear connection, the smaller the maximum slip value.

scholarly journals Development of Shear Connections in Steelconcrete Composite Structures

2015 ◽  
Vol 15 (4) ◽  
pp. 23-32 ◽  
Author(s):  
Antoni Biegus ◽  
Wojciech Lorenc
Keyword(s):  
Composite Structures ◽  
Basic Research ◽  
Special Focus ◽  
Shear Connectors ◽  
Shear Connection ◽  
Shear Connections ◽  
Continuous Shear ◽  
Modelling Techniques ◽  
Year 2000 ◽  
Modern Solution

Abstract Different types of shear connectors and modelling techniques are presented. Basic research conducted or presented after year 2000 is taken into consideration, following the idea of concrete dowel implemented in the form of perfobond strip at the beginning of the 1980s by F. Leonhardt. The latest research in the field of continuous shear connectors applied in bridges is highlited with special focus at the composite dowel shear connection, as it seems to be the most modern solution being strongly introduced to the industry. Final shape of composite dowel shear connection is presented.

Analysis of Performance of Local Puzzle Sheet in a Joint Made of UHPC

2018 ◽  
Vol 272 ◽  
pp. 141-146
Author(s):  
Pavel Jursík ◽  
Jan L. Vítek ◽  
David Čítek
Keyword(s):  
Composite Structures ◽  
Concrete Slab ◽  
Experimental Measurements ◽  
Composite Action ◽  
Shear Connectors ◽  
Shear Connection ◽  
High Bond ◽  
Key Features ◽  
Precast Elements ◽  
Analysis Of Performance

Nowadays the extraordinary mechanical properties of UHPC can be used for real structures. The exceptionally high bond of reinforcement and UHPC together with significant shortening of lap length are the key features for the simplification of joining of precast elements. The properties of UHPC can be very well used also for providing of subsequent shear connection of composite structures. This paper is focused on analysis of performance of a combined joint where connection of precast elements as well as subsequent composite action between steel and concrete parts of steel-concrete composite structure are carried out in one compact detail. Instead of the traditional headed shear studs there were used local perforated puzzle sheets. More resilient connection of shear sheets to the top flange and a high resistance of UHPC allow for reduction of the extent of shear connectors. In experimental measurements carried out on six beams the behavior of shear connection of conventional monolithic concrete slab with continuous perforated shear sheet and shear connection of precast slab with the joint made of UHPC with local puzzle sheets were compared. During the experiment it has been proven that the performance of the beams with both variants of shear connection is very similar even with the significant reduction of the extent of shear connectors. Numerical analysis which describes the stressing in this detail confirms such behavior.

scholarly journals REVIEW OF VARIOUS SHEAR CONNECTORS IN COMPOSITE STRUCTURES

2021 ◽  
Keyword(s):  
Composite Structures ◽  
State Of The Art ◽  
Concrete Slabs ◽  
Composite Action ◽  
Shear Connectors ◽  
Shear Connection ◽  
Reinforced Concrete Slabs ◽  
Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Strength And Stiffness

Shear connectors are devices that provide shear connection at the interface of steel girders and reinforced concrete slabs in composite structures to accomplish composite action in a flexure. The seismic response of composite structures can be controlled using properly designed shear connectors. This state-of-the-art review article presents considerable information about the distinct types of shear connectors employed in composite structures. Various types of shear connectors, their uniqueness and characteristics, testing methods and findings obtained during the last decade are reviewed. The literature, efficacy, and applicability of the different categories of shear connectors, for example, headed studs, perfobond ribs, fibre reinforced polymer perfobonds, channels, pipes, Hilti X-HVB, composite dowels, demountable bolted shear connectors, and shear connectors in composite column are thoroughly studied. The conclusions made provide a response to the flow of the use of shear connectors for their behaviours, strength, and stiffness to achieve composite action.

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