FE analysis of continuous shear connector

2021 ◽  
Author(s):  
Patrícia Vaňová ◽  
Vincent Kvočák
Keyword(s):  
Element Model ◽  
Steel Beams ◽  
Shear Connector ◽  
Complex Solution ◽  
Shear Connectors ◽  
Excellent Research ◽  
Continuous Shear ◽  
Composite Bridges ◽  
Push Out ◽  
Material Tests

<p>Composite bridges with encased steel beams, or nowadays, rather encased steel continuous shear connectors are a welcome option for short span railway or road bridges. With lower construction height and easy construction of prefabricated composite beams it brings a new, complex, solution for replacement of older, overserved bridges, as well as for new tasks. At Technical University of Košice, Faculty of Civil Engineering a new designed of the steel perforated strip was developed. At Laboratory of Excellent Research several experiments for resistance finding were carried together with material tests. In this article the numerical analysis of push-out tests performed is closely described and the shear resistance of finite element model developed in Abaqus/CAE is compared to experimental results.</p>

scholarly journals Push-Out Test and FEM Analysis of Continuous Shear Connector

2021 ◽  
Vol 1203 (3) ◽  
pp. 032080
Author(s):  
Patricia Vanova ◽  
Daniel Dubecky ◽  
Vincent Kvocak
Keyword(s):  
Slovak Republic ◽  
Concrete Bridges ◽  
Bottom Flange ◽  
Element Analysis ◽  
Shear Connectors ◽  
Excellent Research ◽  
Finite Element Analysis Simulation ◽  
Continuous Shear ◽  
Push Out ◽  
Composite Steel

Abstract Composite steel concrete bridges with embedded continuous shear connectors are one of the newer popular options for short span (up to 20 m) bridges. They can be used for both road and railway bridges and due to their low structural height, nowadays, they are also a welcome alternative for bridge reconstructions – the concrete part serves as the bridge deck as well as the main structure. Unfortunately, In the Slovak Republic, no such bridges have been built as of yet (2020). At Technical University of Kosice, Department of Steel and Timber Structures, an extensive research regarding the steel shear connectors have been launched. Its goals are to bring new, easier for construction (due to prefabrication process), more resistant with even lower structural height, and more economical (due to lesser usage of materials and quick construction) geometrical solutions for composite steel concrete bridges as well as to open and popularize this solution for developers in the Slovak Republic. In this article, one of the new types is presented. It has a cross-section in a shape of a trapezoid, with holes in all its sides, except the bottom flange. Their purpose is to create concrete studs and secure full shear transmission with higher shear resistance, but they also serve to create space for transverse reinforcing bars. Its geometrical and material characteristics are closely specified. Results and process of push-out tests performed in Laboratory of Excellent Research onto three specimens are described and compared to results of finite element analysis simulation performed in Abaqus software.

scholarly journals Pengaruh Panjang dan Diameter Stud terhadap Keruntuhan Geser Struktur Komposit Baja-Beton

2019 ◽  
Vol 24 (2) ◽  
pp. 96
Author(s):  
Rahma Nindya Ayu Hapsari ◽  
Ilham Nurhuda ◽  
Nuroji Nuroji
Keyword(s):  
Composite Structures ◽  
Load Capacity ◽  
Bending Moment ◽  
Concrete Slabs ◽  
Steel Beams ◽  
Shear Connector ◽  
Shear Connectors ◽  
Concrete Blocks ◽  
Stud Shear Connector ◽  
Push Out

Composite structures of concrete slabs and steel beams require shear connectors to transfer shear force between steel beams and concrete slabs. The strength of stud shear connector specified on SNI 03-1729-2013 only considers the effect of stud diameter, however the length of a stud may influence its behavior and strength. This research observes the effects of length and diameter (𝓁/𝒹) of shear connectors on the strength. This research was conducted using the push out method explain in AS-4347- Part I. The test specimens observed in this research were concrete and steel composites, composing IWF 350x175x11x14 mm and concrete blocks of size 450x225x160 mm. The studs were made of steel reinforcements with diameter (𝒹) of 10, 16 and 22 mm, were welded on IWF with 5 mm weld thickness. The length of studs for each stud diameter were 4d, 5d, and 6d. The results indicate that the increase in stud diameter will increase the load capacity of stud. The length of studs effect its load capacity. A slim stud experiences large bending moment at the base of the shear connector. The results show that the highest value of load capacity is measured at specimens with 𝓁/𝒹 ratio of 5.

Behaviour of perfobond rib shear connectors: push-out tests

1992 ◽  
Vol 19 (1) ◽  
pp. 1-10 ◽  
Author(s):  
M. R. Veldanda ◽  
M. U. Hosain
Keyword(s):  
Concrete Slab ◽  
Composite Beams ◽  
Steel Beams ◽  
Shear Connector ◽  
Reinforcing Bars ◽  
Longitudinal Splitting ◽  
Shear Connectors ◽  
Beam Shear ◽  
Headed Stud ◽  
Push Out

This paper summarizes the results of tests performed on 48 push-out specimens to investigate the feasibility of using perfobond rib type shear connectors in composite beams with ribbed metal decks placed parallel to the steel beams. The perfobond rib shear connector is a flat steel plate containing a number of holes. The results indicate that perfobond rib connectors can be effectively used in composite beams with ribbed metal decks placed parallel to the steel beams. An appreciable improvement in performance was observed in test specimens when additional reinforcing bars were passed through the perfobond rib holes. Shank shear was the principal mode of failure in specimens with headed studs. In specimens with perfobond rib, failure was triggered by the longitudinal splitting of the concrete slab, followed by the crushing of concrete in front of the perfobond rib. Key words: composite beam, shear connector, perfobond rib, headed stud, push-out test, metal deck.

scholarly journals Material characteristics of push-out tests

2021 ◽  
Vol 1209 (1) ◽  
pp. 012065
Author(s):  
P Vanova ◽  
P Orolin ◽  
D Dubecky
Keyword(s):  
Shear Connector ◽  
Glass Laminate ◽  
Laminate Material ◽  
Research And Innovation ◽  
Material Characteristics ◽  
Continuous Shear ◽  
Technical University ◽  
Push Out ◽  
Material Tests

Abstract Two types of push-out tests were carried out at the Centre of Research and Innovation in Construction, the Technical University of Košice - one at a composite based on steel continuous shear connector and the second one at the same connector, however made of glass-laminate material. For further research, the material characteristics of the material used needed to be found. In this article, the material tests performed as well as their results are presented.

Push-out tests on bolted shear connectors in composite cold-formed steel beams

2021 ◽  
Vol 164 ◽  
pp. 107831
Author(s):  
Mahmoud Hosseinpour ◽  
Mehran Zeynalian ◽  
Abdoreza Ataei ◽  
Maryam Daei
Keyword(s):  
Steel Beams ◽  
Shear Connectors ◽  
Cold Formed Steel ◽  
Push Out

scholarly journals Experimental Study on an Innovative Shear Connector in Steel-UHPC Composite Structure

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Yang Liu ◽  
Dan Zeng ◽  
Lei Cao ◽  
Naiwei Lu
Keyword(s):  
Bearing Capacity ◽  
Failure Modes ◽  
Steel Plate ◽  
Least Square Method ◽  
Maximum Load ◽  
Least Square ◽  
Shear Connector ◽  
Shear Connectors ◽  
Shear Bearing Capacity ◽  
Push Out

In order to improve the stiffness and shear bearing capacity of steel-UHPC composite bridge, an innovative shear connector named arc-shaped reinforcement shear connector was proposed and compared with the stud and perforated bar steel plate shear connector using the static push-out test. Considering shear connector diameter, a total of ten push-out specimens for five groups were designed. The results indicated that the failure modes and failure mechanism of the arc-shaped reinforcement shear connectors were significantly different from stud shear connector and perforated bar steel plate. Obvious failure characteristics such as crack and reinforcement were not observed for the arc-shaped reinforcement specimens except for fine cracks on the top of one specimen, but these were observed for the others two types of shear connector. The relative slip value of arc-shaped reinforcement shear connector at the maximum load was the smallest and less than 1 mm in three types of shear connectors. The stiffness and shear bearing capacity of arc-shaped reinforcement were higher than those of stud and perforated bar steel plate under the same diameter. Increasing arc-shaped reinforcement diameter could improve significantly static behavior of shear connector. When the diameter of arc-shape reinforcement was increased from 8 mm to 12 mm, the ductility factor, stiffness, and shear bearing capacity of arc-shaped reinforcement shear connector were improved by 174.32%, 214.76%, and 54.2%, respectively. A calculation method of shear bearing capacity was proposed by the least square method and multiple regression analysis and agreed well with the test result.

EXPERIMENTAL STUDY ON SHEAR RESISTANCE EVALUATION OF PERFOBOND STRIP WITHOUT PENETRATING REBAR

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Nguyen Minh Hai ◽  
Nakajima Akinori
Keyword(s):  
Experimental Study ◽  
Concrete Block ◽  
Shear Resistance ◽  
Hybrid Structures ◽  
Shear Connector ◽  
Concrete Compressive Strength ◽  
Shear Connectors ◽  
Concrete Members ◽  
Stress Transmission ◽  
Push Out

In steel-concrete hybrid members and structures, to ensure required stress transmission between the steel and the concrete members, shear connectors are generally arranged between the two. A perfobond strip is widely used as the shear connector in various hybrid structures, and when applying the perfobond strip it is important to confirm its shear resistance. In this study, the shear resistance of the perfobond strip without the penetrating rebar is investigated experimentally by employing a simple push-out specimen. As a result, a design formula is proposed for evaluating the shear resistance of the perfobond strip, taking into account the dimensions of concrete block and the thickness of the perfobond plate, as well as the perforation diameter, and the concrete compressive strength.

Perforated FRP Shear Connector for the FRP-Concrete Composite Bridge Deck

2007 ◽  
Vol 334-335 ◽  
pp. 381-384 ◽  
Author(s):  
Jeong Hun Nam ◽  
Soon Jong Yoon ◽  
Dong Min Ok ◽  
Sun Kyu Cho
Keyword(s):  
Bridge Deck ◽  
Experimental Investigations ◽  
Shear Connector ◽  
Composite Action ◽  
Shear Connectors ◽  
Load Carrying ◽  
Composite Bridge ◽  
New Type ◽  
Composite Bridge Deck ◽  
Push Out

In recent years, the FRP-concrete composite bridge deck system has been introduced because of its light-weight and durability. The FRP-concrete composite bridge deck is composed of FRP module and concrete, and they are connected with shear connectors. In order to insure the composite action between FRP module and concrete, appropriate types of shear connector need to be installed. In this study, new type of FRP shear connector was suggested and the experimental investigations are conducted based on the studies of Perfobond. In the experimental study, the push-out test was conducted and the load carrying mechanism was analyzed including the friction effect of sand coating. Considering the load carrying mechanism of perforated shear connector under shear force, the empirical equation for the prediction of shear strength of perforated FRP shear connector was suggested.

FEASIBILITY OF USING BOLTED SHEAR CONNECTOR WITH COLD-FORMED STEEL IN COMPOSITE CONSTRUCTION

2016 ◽  
Vol 78 (6-12) ◽  
Author(s):  
Mustapha Muhammad Lawan ◽  
Mahmood Md. Tahir ◽  
Emad Hosseinpour
Keyword(s):  
Shear Connector ◽  
Test Results ◽  
Composite Construction ◽  
Composite Action ◽  
Shear Connectors ◽  
Shear Connection ◽  
Cold Formed Steel ◽  
Hot Rolled ◽  
Hot Rolled Steel ◽  
Push Out

In conventional composite construction for hot-rolled steel (HRS) section, the composite action is usually achieved by using headed studs shear connectors. But, for cold-formed steel (CFS) section, the use of headed studs is not feasible as the section is very thin and difficult to be weld.  Therefore, an innovative way of shear connection mechanism of using bolt and nut is suggested in this study. This paper presents the feasibility of using bolt as shear connector by presenting experimental test results so as to explore more on their capability to be used as shear connectors. The study investigated the structural capability of the proposed bolted shear connector when used in concrete known as Self-compacting concrete (SCC) integrated with CFS to provide the required composite action. Push out test specimens with bolted shear connector of grade 8.8 at designated intervals longitudinally spaced were fabricated, cast and tested to failure. The results showed that the proposed shear connector was structurally capable and also an appreciable strength resistance was achieved. 

scholarly journals Push-Out Tests for a Novel Prefabricated Steel-Concrete Composite Shallow Flooring System

2018 ◽  
Author(s):  
Inas Mahmood Ahmed ◽  
Konstantinos Daniel Tsavdaridis ◽  
Farzad Neysari ◽  
John Forth
Keyword(s):  
Lightweight Concrete ◽  
Lightweight Aggregate ◽  
Longitudinal Shear ◽  
Shear Behaviour ◽  
Lightweight Aggregate Concrete ◽  
Steel Beams ◽  
Floor Slab ◽  
Concrete Floor ◽  
Shear Connectors ◽  
Push Out

This paper introduces a novel prefabricated and shallow steel-concrete composite flooring system which is consisted of two main structural components: two C-channel steel beams and a partially encased concrete floor. The concrete floor, which is in the form of T ribbed slab sections, was constructed using two types of concrete (reinforced normal concrete and reinforced lightweight aggregate concrete). The steel edge beams partially encase the floor slab and provide clear and straight finish edges. The floor slab spans to a maximum of 2.0m inclusive of the width of the steel edges with a finished depth of only 230mm. The unique features of the proposed system are reducing the weight and the number of erection lifts (during installation) by using lighter elements (lightweight concrete and shallow steel beams) while the wider possible units have been proposed to fit on transportation tracks; further reducing the extent of site works by pre-off site fabrication, examining the material cost against the fabrication and site erection costs. For the composite slab in bending, the longitudinal shear force is transferred by a unique shear mechanism which results from the special shear connectors. This paper includes the work of a total 2 full-scale push-out tests aimed at investigating the longitudinal shear behaviour of these novel flooring systems and the effects of additional shear connectors. An analytical work is also carried out to investigate the failure mechanism of the system.

Sign in / Sign up

Export Citation Format

Share Document