Study on effective height of stud shear connector

For decades, Hot Rolled Steel (HRS) section was in use in construction of buildings and bridges. The simple reason is that the use of HRS section in composite systems is well established by standard rules and their design necessities as provided in the codes. In this paper, the use of doubly oriented back-to-back Cold-Formed Steel (CFS) section coupled with bolted shear connectors in composite floor system was demonstrated. The bolted system of shear connector provides an alternative to headed stud shear connector with CFS section as welding of the stud connector is practically not feasible on CFS section because of its thinness nature. The loading system used was four-point bending test to determine the flexural strength capabilities of the composite floor system. The resulting composite floor system has proven to provide adequate strength and stiffness properties under the applied loads. The results have shown that the theoretical value of flexural capacities calculated agrees reasonably well with the experimental values. In conclusion, the composite floor system can be used in small and medium size buildings, as well as in light weight construction industries.

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Mechanical Effect of Steel Fiber Reinforced Concrete on Stud Shear Connector in Composite Bridge

IABSE Symposium Report ◽

10.2749/222137815815775204 ◽

2015 ◽

Vol 104 (13) ◽

pp. 1-8

Author(s):

Chen Xu ◽

Hiroshi Masuya ◽

Saiji Fukada

Keyword(s):

Reinforced Concrete ◽

Steel Fiber ◽

Mechanical Effect ◽

Fiber Reinforced Concrete ◽

Shear Connector ◽

Fiber Reinforced ◽

Steel Fiber Reinforced Concrete ◽

Composite Bridge ◽

Stud Shear Connector

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Shear Capacity Study on Double-Nut Stud Shear Connector

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.512-515.1991 ◽

2012 ◽

Vol 512-515 ◽

pp. 1991-1994

Author(s):

Yang Wang ◽

Tian Li

Keyword(s):

Bearing Capacity ◽

Concrete Slab ◽

Concrete Strength ◽

Shear Capacity ◽

Steel Beam ◽

Adjustment Coefficient ◽

Shear Connector ◽

Stud Shear Connector ◽

Better Than

A new stud—double-nut stud was present. The goals of the study were two fold, firstly to compare with traditional stud and secondly to search the affect factors of capacity, get calculation equations .We present an analysis of double-nut stud, include different concrete strength and different stud size. This study showed double-nut stud is better than traditional stud, for it has higher shearing stiffness and bearing capacity, makes steel beam and the concrete slab to work together. These results suggest that all equations of stud are not applicable computation double -nut stud, it should make 1.35-1.5 adjustment coefficient.

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Experimental Investigation of Steel Confinement of Clustered Large-Size Stud Shear Connector in Full-Depth Precast Bridge Deck Panel

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.856.99 ◽

2020 ◽

Vol 856 ◽

pp. 99-105

Author(s):

Krissachai Sriboonma ◽

Sacharuck Pornpeerakeat

Keyword(s):

Bridge Deck ◽

Precast Concrete ◽

Relative Displacement ◽

Wire Mesh ◽

Shear Connector ◽

Maximum Resistance ◽

Large Size ◽

Different Types ◽

Concrete Bridge Deck ◽

Stud Shear Connector

The research focuses on investigating different types of steel confinements around a clustered large-size stud shear connector using in full-depth precast concrete bridge deck panel. The tests were based on Push-off test of two main groups of specimens: (1) the specimens with 4-stud shear connector where three different types of confinement were adopted including of O-ring confinement, Wire-mesh confinement, and L-angle confinement), and (2) the specimens with 8-stud shear connector where two different types of confinement were investigated including of Plate-ring confinement and L-angle confinement. The test results concluded that L-angle confinement type of the group of specimens with 4-Stud is the most sufficient type comparing between the different types of confinement in the same group. The maximum resistance was found at 41-ton, while as the displacement was found to be the most expansible and gradually reduced until the failure point. This means that the sign of failure can be noticeable prior to a collapse of the structure. For the group of specimens with 8-Stud, the resistance of this group was higher than the group of specimens with 4-Stud about 50 - 100% increase depending on each type of confinement. The maximum resistance was found for Plate-ring confinement type at 70-ton, which was agreed with the increment of the displacement about 20 - 50%. In comparison between specimens with 8-Stud, the Plate-ring confinement showed greater resistance and more relative displacement about 15% than the L-angle confinement.

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

MEDIA KOMUNIKASI TEKNIK SIPIL ◽

10.14710/mkts.v24i2.16998 ◽

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.

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Numerical Simulation on Failure Process of Rubber-Sleeved Headed Stud Shear Connector

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.577-578.617 ◽

2013 ◽

Vol 577-578 ◽

pp. 617-620

Author(s):

Xiao Qing Xu ◽

Yu Qing Liu ◽

Jun He ◽

Jie Luo

Keyword(s):

Finite Element ◽

Failure Mode ◽

Composite Structures ◽

Failure Process ◽

Material Model ◽

Shear Loading ◽

Shear Connector ◽

Element Analysis ◽

Stud Shear Connector ◽

Headed Stud

Rubber-sleeved headed stud shear connector is flexible shear connector used in steel-concrete composite structures. In this work, nonlinear finite element model has been developed to simulate the failure process of the shear connector under shear loading. The stress distribution, deformation, crack propagation and failure mode were analyzed. The material nonlinearities of rubber, headed stud, concrete were considered in the material model. The rubber was assumed as a perfect material with no defect, and a modified reduced polynomial form of strain energy including an energy limiter and a new constant was introduced into the user material subroutine VUANISOHYPER-INV of ABAQUS software. Damaged plasticity model was used to model the concrete material. A tri-linear elastic-plastic curve was used in stud material model. Comparing the results obtained from the finite element analysis with those from push-out test, good agreement is highlighted in the capacity, ductility and failure mode of rubber-sleeved headed stud shear connector.

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