Stud Shear Connection Design for Composite Concrete Slab and Wood Beams

2002 ◽  
Vol 128 (12) ◽  
pp. 1544-1550 ◽  
Author(s):  
Piero Gelfi ◽  
Ezio Giuriani ◽  
Alessandra Marini
Keyword(s):  
Concrete Slab ◽  
Shear Connection ◽  
Wood Beams ◽  
Connection Design

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>

LOCAL EFFECTS OF TRUSS NODE FORCES ON SHEAR CONNECTION IN COMPOSITE TRUSS BEAMS

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Josef Machacek ◽  
Martin Charvat
Keyword(s):  
Cross Sections ◽  
Concrete Slab ◽  
Longitudinal Shear ◽  
Limit States ◽  
Shear Connectors ◽  
Shear Connection ◽  
Bridge Structures ◽  
Using Data ◽  
Iteration Analysis ◽  
Connection Design

Design of composite steel and concrete truss girders is discussed, with an emphasis on longitudinal connection of the steel truss and a concrete slab. While a strongly non-uniform distribution of longitudinal shear due to localized force transfer in truss nodes occurs in elastic stages of early loadings, the plastic redistribution follows up to collapse. The former is of primary interest in the design of bridges, class 3 and 4 cross sections, non-ductile shear connection, and serviceability limit states in general. This research clears up the distribution in elastic phases and the process of plastic redistribution by using data of real bridge structures. Wide parametric studies provide insight into important parameters influencing the distribution, such as rigidities of shear connection, rigidities of steel chord and concrete slab, concentration of shear connectors above truss nodes, influence of temperature effects, shrinkage and creep. Design according to Eurocode 4 is discussed together with common procedures used by designers, referring to rather improper/conservative solutions. The necessity of densification of shear connectors above truss nodes is discussed in detail and suggestions for an iteration analysis for reasonable connection design is proposed.

Shear connection of prefabricated ultra-lightweight concrete slab systems (PUSSTM)

Structures ◽  
2022 ◽  
Vol 36 ◽  
pp. 65-97
Author(s):  
Inas Mahmood Ahmed ◽  
Konstantinos Daniel Tsavdaridis
Keyword(s):  
Lightweight Concrete ◽  
Concrete Slab ◽  
Shear Connection

scholarly journals STUDY OF THE FIRE PERFORMANCE OF HYBRID STEEL-TIMBER CONNECTIONS WITH FULL-SCALE TESTS AND FINITE ELEMENT MODELLING

2016 ◽  
Author(s):  
Aaron O. Akotuah ◽  
Sabah G. Ali ◽  
Jeffrey Erochko ◽  
Xia Zhang ◽  
George V. Hadjisophocleous
Keyword(s):  
Finite Element ◽  
Load Ratio ◽  
Full Scale ◽  
Test Results ◽  
Structural Members ◽  
Fire Performance ◽  
Shear Connection ◽  
Timber Connections ◽  
Full Scale Tests ◽  
Connection Design

Connection design is critical in timber buildings since the connections tend to have lower strength than the structural members themselves and they tend to fail in a brittle manner. The effect of connection geometry on the fire performance of a hybrid steel-timber shear connection is investigated by full-scale testing. These tests were conducted by exposing the test specimens to the standard time-temperature curve defined by CAN/ULC-S101 (CAN/ULC-S101, 2007). Test results showed that the fire resistance of these connections depends on the load ratio, the type of connection and the relative exposure of the steel plate to fire. Finite element models of the connections under fire were constructed using ABAQUS/CAE and these were validated using the test results. These numerical model results correlate well with test results with ±8.32% variation.

scholarly journals Test and analysis of a new ductile shear connection design for RC shear walls

2017 ◽  
Vol 18 (1) ◽  
pp. 189-204 ◽  
Author(s):  
Jesper Harrild Sørensen ◽  
Linh Cao Hoang ◽  
John Forbes Olesen ◽  
Gregor Fischer
Keyword(s):  
Shear Walls ◽  
Shear Connection ◽  
Ductile Shear ◽  
Connection Design

scholarly journals Structural analysis of steel-concrete composite beam bridges utilizing the shear connection model

2021 ◽  
Vol 72 (7) ◽  
pp. 811-823
Author(s):  
Thang Phung Ba ◽  
Anh Lai Van
Keyword(s):  
Structural Analysis ◽  
Concrete Slab ◽  
Beam Theory ◽  
Vital Role ◽  
Reinforced Concrete Slab ◽  
Actual Performance ◽  
Shear Connection ◽  
Proposed Model ◽  
Composite Bridge ◽  
Local Results

Shear connector (typically shear studs) plays a vital role as a transfer zone between steel and concrete in steel-concrete composite bridge girder. In the previous studies, the connection between steel beam and reinforced concrete slab were considered as continuous joint. However, in practice, this connection is discrete, which allows the slipping and peeling phenomenon between two layers (the influence of peeling is usually very small and could be ignored). To reflect this actual working mechanism, this study proposed a model of shear connection in the form of discrete points at the actual positions of studs for structural analysis. The model was simulated utilizing Timoshenko beam theory considering transverse shear effects. The numerical applications are carried out in order to compare two types of connections. The obtained results indicated that the proposed model properly reflected the actual performance of the structure and in some necessary cases, we should consider discrete connection for more accurate local results.

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.

Theoretical Analysis of Shearing Capacity of U-Section Steel-Encased Concrete Composite Beams with the Full Connection Design

2011 ◽  
Vol 94-96 ◽  
pp. 958-961
Author(s):  
Xue Jun Zhou ◽  
Ting Zhang
Keyword(s):  
Theoretical Analysis ◽  
Composite Beams ◽  
Vertical Shear ◽  
Calculation Formula ◽  
Shear Connectors ◽  
Shear Connection ◽  
Shear Performance ◽  
Weak Plane ◽  
Connection Design ◽  
Relative Slippage

In this article, by studying the horizontal and vertical shear performance, the calculation formula for the fully shear connection is proposed. In order to avoid the overall vertical relative slippage between the steel and concrete, the vertical slippage formula is proposed to calculate the required number of the shear connectors for the first weak plane and second weak plane.

Fire performance of single plate shear connections in a composite floor

2016 ◽  
Vol 7 (4) ◽  
pp. 316-327
Author(s):  
Serdar Selamet ◽  
Caner Bolukbas
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Concrete Slab ◽  
Element Model ◽  
Mechanical Analysis ◽  
Steel Beam ◽  
Fire Performance ◽  
Content Type ◽  
Shear Connection ◽  
Single Plate

Purpose This paper aims to present a numerical investigation on the fire performance of a single plate shear connection in a steel-framed composite floor. Large-scale fire experiments show that the tensile membrane action of the concrete slab enhances the fire performance of composite floors. The enhancement in the performance is contributed to large slab deflections. However, these deflections cause significant rotations and tensile force in the single plate connection. Design/methodology/approach A finite element model is constructed, which consists of a secondary steel beam, concrete slab and shear connection components. The interaction between the connection components such as bolts and single plate is defined by contact surfaces. The analysis is conducted in two uncoupled phases: thermal analysis by creating fire boundaries on the composite floor model with convective and radiative heat transfer, and mechanical analysis by considering thermal expansion and changes in the material stiffness and strength due to temperature. Findings The thermo-mechanical analysis of the composite floor finite element model shows that the structure survives the 2-h Standard fire, but the connection fails by bolt shear and buckling of the connection plate. Originality/value This paper investigates the fire performance of a shear connection in a steel-framed concrete slab. Previous work generally focused on the concrete slab behavior only. The originality of the research is that the connection is considered as part of a sub-assembly and is subjected to forces due to concrete and steel beam interaction.

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