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

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

Lightweight Aggregate Concrete as an Alternative for Dense Concrete in Post-Tensioned Concrete Slab

2018 ◽  
Vol 926 ◽  
pp. 140-145 ◽  
Author(s):  
Małgorzata Mieszczak ◽  
Lucyna Domagała
Keyword(s):  
Mechanical Properties ◽  
Lightweight Concrete ◽  
Concrete Slab ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
Large Span ◽  
Shrinkage And Creep ◽  
Theoretical Results ◽  
Post Tensioned

The paper presents the results of tests conducted on two lightweight aggregate concretes made of new national Certyd artificial aggregate. This research is intended to first application of lightweight concrete to construct large-span post-tensioned slab. In addition to mechanical properties development, shrinkage and creep during 3 months of loading were tested. The obtained results are compared with theoretical results predicted by standard. Conducted tests indicated, that measured values of shrinkage and creep are significantly lower than predicted ones. This is promise for application of tested concrete in construction of post-tensioned slabs.

The Importance of Lightweight Concrete Technology Development for IBS Industry in Malaysia Based on Cost Comparison between Concrete Slab and Hollow Core Slab: A Case Study of LRT Car Park Project

2014 ◽  
Vol 567 ◽  
pp. 637-641 ◽  
Author(s):  
Mohd Zakwan Ramli ◽  
Harlina Mohd Mahayudin ◽  
G. Hayder ◽  
Z.M. Hafiz ◽  
M. Daud ◽  
...  
Keyword(s):  
Lightweight Concrete ◽  
Concrete Slab ◽  
New Technology ◽  
Cost Comparison ◽  
Future Research ◽  
Hollow Core ◽  
Concrete Technology ◽  
Conventional Concrete ◽  
Starting Point ◽  
Hollow Core Slab

There are several issues related to the implementation of new Industrialised Building System (IBS) technology in Malaysia which some of them are the awareness among industry players, and lack of development on the new technology in the industry. The main constraint that has always been discussed by the IBS players is time and cost. To have more reliable product or technology in terms of cost and time, it is important to craft and develop new idea as well as technology in our own country. The objective of this study was to highlight the cost comparison between cast in-situ concrete slab and hollow core slab (lightweight) which it can be a starting point for future research on the development of new lightweight IBS technology in Malaysia to get the most reliable cost with latest technology by using local resources. Informations on costs and work durations are collected and analysed between two floors using two different construction methods (hollow core slab and conventional concrete slab). Hollow core slab (lightweight IBS) has similar or less cost with shorter construction period (30% shorter) for the project.

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.

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.

Experimental and Numerical Analysis of Timber-Lightweight Concrete Composite with Adhesive Connection

2014 ◽  
Vol 969 ◽  
pp. 155-160 ◽  
Author(s):  
Ján Kanócz ◽  
Viktória Bajzecerová ◽  
Marek Mojdis
Keyword(s):  
Numerical Analysis ◽  
Theoretical Analysis ◽  
Experimental Test ◽  
Lightweight Concrete ◽  
Composite Beams ◽  
Short Term ◽  
Shear Connection ◽  
Theoretical Results

In this paper experimental and numerical analysis of timber-lightweight concrete composite floor elements with glued shear connection under short term loading is presented. The composite connection of two materials by special adhesive for bounding wet concrete to timber was performed. For experimental test and theoretical analysis two type of composite beams was used. Comparison of test with theoretical results is finally presented.

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