Behavior of Boxed Cold-Formed Steel as Composite Beam with Rebar as Shear Connector

2018 ◽  
pp. 324-332 ◽  
Author(s):  
Musab N. A. Salih ◽  
Mahmood Md. Tahir ◽  
Shahrin Mohammad ◽  
Yusof Ahmad
Keyword(s):  
Composite Beam ◽  
Shear Connector ◽  
Cold Formed Steel

scholarly journals Push-out Test of Profiled Metal Decking Slabs with Cold-formed Steel Beams and Rebar Shear Connector

2021 ◽  
Vol 18 (12) ◽  
Author(s):  
Achmad Abraham S. ARMO ◽  
Anis SAGGAFF ◽  
Mahmood Bin Md. TAHIR
Keyword(s):  
Composite Beam ◽  
Failure Modes ◽  
Shear Capacity ◽  
Shear Connector ◽  
Test Results ◽  
Modes Of Failure ◽  
Beam Design ◽  
Two Samples ◽  
Cold Formed Steel ◽  
Push Out

New methods to provide shear strength on the cold-formed steel (CFS) lipped c-channel section composite beam encased with concrete partially is proposed using rebars embedded in concrete. The development of research on the CFS composite beams technology with partial encasement shows that the section of the composite beam encased with concrete partially can provide ductile flexural action for the composite beam. The application of profiled metal decking slabs in the composite beam is becoming increasingly popular compared to solid slabs. However, it has a detrimental effect on the structural behavior of a composite beam. This research is aimed primarily at presenting the behavior of the rebar shear connector to evaluated ductility, shear capacity, and modes of failure. Two samples using a rebar 12 mm in diameter in the profiled metal decking slabs and solid slabs were tested using the standard push-out test till failure. For the composite beam design, the proposed shear connector embedded in the slab concrete and the CFS encased with concrete partially used the test results’ shear capacity, greater than the values as proposed by section 3.1, BS 5950. Due to rebars shear-off, the solid slab specimen failed with the highest load of 489.6 kN while the Profiled Metal Decking Slab specimen failed due to the formation of the cracks on the PMDS at 421.1 KN ultimate loading. HIGHLIGHTS A new system of the rebar shear connectors for the Cold-Formed Steel (CFS) composite beam partially encased in concrete have been developed The main purpose of push-out testing is to investigate the shear capacity and ductility of the proposed shear connector failure modes and load-slip connections The shear capacity of the test results is greater than the values as indicated by BS 5950 Part 3.1 The proposed rebars as a shear connector for partly embedded CFS can be used in the construction GRAPHICAL ABSTRACT

scholarly journals Behaviour of rebar shear connector in a push test for composite beam with cold-formed steel section

2019 ◽  
Vol 620 ◽  
pp. 012037
Author(s):  
Achmad Abraham S Armo ◽  
Anis Saggaff ◽  
Mahmood Md Tahir ◽  
Shek Poi Ngian ◽  
Arizu Sulaiman ◽  
...  
Keyword(s):  
Composite Beam ◽  
Shear Connector ◽  
Cold Formed Steel ◽  
Steel Section

COMPOSITE CONSTRUCTION OF COLD-FORMED STEEL (CFS) SECTION WITH HIGH STRENGTH BOLTED SHEAR CONNECTOR

2015 ◽  
Vol 77 (16) ◽  
Author(s):  
Mustapha Muhammad Lawan ◽  
Mahmood Md. Tahir ◽  
Mohd. Hanim Osman
Keyword(s):  
Composite Beam ◽  
High Strength ◽  
Shear Connector ◽  
Composite Construction ◽  
Moment Capacity ◽  
Shear Connection ◽  
Strength Capacity ◽  
Cold Formed Steel ◽  
Ultimate Moment ◽  
Push Out

Composite construction is well known to be effectively used in the construction of buildings and bridges using hot rolled steel (HRS) and headed studs connectors. The shear connectors provides the enhancement as established in current design codes. In this paper, the shear connection mechanism was proposed using high strength bolted shear connector to provide composite action between concrete and the steel section. The conventional headed stud shear connector was eliminated since Cold-formed steel (CFS) was used and welding was not practically possible due to thinness nature of the CFS section. Therefore, in this study investigation was carried out on the strength capacity, ductility and the ultimate flexural capacity of the proposed high strength bolted shear connector and the composite beam specimens respectively. Four push-out and two full-scale composite beam specimens were fabricated using high strength M16 bolted shear connector of Grade 8.8 connected to the top flanges of the CFS I-section and tested to failure using push-out and four-point bending tests respectively. The results show that ultimate load and ultimate moment capacities of the proposed system were significantly improved by using the proposed connectors. The experimental results were compared with theoretical results based on the provision of Eurocode 4, and good agreement between the results was observed. In conclusion, compared results proved that the ultimate moment capacity of the proposed composite beams can be estimated efficiently by using the constitutive laws as prescribed by Eurocodes and British standards.

A Comparative Study of Ultimate Strength and Behaviour of Steel Concrete Composite Beam with Shear Connectors Subjected to Pure Torsion

2016 ◽  
Vol 13 (10) ◽  
pp. 6892-6895
Author(s):  
J Thivya ◽  
R Malathy ◽  
D Tensing
Keyword(s):  
Comparative Analysis ◽  
Comparative Study ◽  
Ultimate Strength ◽  
Composite Beam ◽  
Torsion Test ◽  
Shear Connector ◽  
Pure Torsion ◽  
Shear Connectors ◽  
Physical Response ◽  
Strength And Stiffness

This study concerns the employment of pure torsion analysis to determine ultimate strength of composite beam with shear connectors. The effect of shear connector is used for increasing the strength and stiffness of composite beam. This behavior is influenced by physical response of the beam under pure torsion. Totally 12 beams are tested and comparative analysis has been made within this 12 beams. The curvature, rotation and angle of twist are calculated throughout entire load by torsion test. This investigation proves that the composite beam with 75 mm spaced shear connector provides good ultimate strength.

Behavior of pre-cast U-Shaped Composite Beam integrating cold-formed steel with ferro-cement slab

2016 ◽  
Vol 102 ◽  
pp. 18-29 ◽  
Author(s):  
T.M. Alhajri ◽  
M. M Tahir ◽  
M. Azimi ◽  
J. Mirza ◽  
M.M. Lawan ◽  
...  
Keyword(s):  
Composite Beam ◽  
Cold Formed Steel

scholarly journals Comparative Study between Linear-Interpolation and Stress-Block Methods of Composite Design Using Cold-Formed Steel Section

2018 ◽  
Vol 7 (3.9) ◽  
pp. 38 ◽  
Author(s):  
M M. Lawan ◽  
P N. Shek ◽  
M M. Tahir
Keyword(s):  
Linear Interpolation ◽  
Bending Test ◽  
Medium Size ◽  
Shear Connector ◽  
Shear Connectors ◽  
Cold Formed Steel ◽  
Strength And Stiffness ◽  
Stud Shear Connector ◽  
Headed Stud ◽  
Floor System

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.    

Study on the Computing Method of Shear Connector in Steel-Concrete Composite Beam

CICTP 2019 ◽  
2019 ◽  
Author(s):  
Kunpeng Zhao ◽  
Fengkun Cui ◽  
Yuehua Li ◽  
Xiaoying Wang ◽  
Hongyun Xue ◽  
...  
Keyword(s):  
Composite Beam ◽  
Shear Connector ◽  
Computing Method
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