Experimental Investigation on Slip-In Connection for Cold-Formed Steel Double Channel Sections

The application of cold-formed steel in light steel framing design can become a popular choice of Industrialized Building System, by moving huge amount of construction work to the factory and leaving the construction site cleaner and safer. However the joints behaviour for primary structures, particularly the partial strength semi-rigid beam-to-column connection has not been studied in depth. This paper presents the isolated joint test on slip-in connection using 6 mm hot-rolled steel gusset plate. Two cold-formed lipped channel sections were placed back-to-back to form beam and column members. Three specimens with the depth of beam ranging from 150 mm to 250 mm were tested. From the experimental results, it is observed that the ratio of moment resistance of joint to the moment resistance of the connected beam increases in the range of 0.46 to 0.70. The rotational capacities of the joints exceed 30 mRad. The rotational stiffness achieves 511 kNm/rad to 1671 kNm/rad. It is concluded that the proposed connections could be classified as partial strength connection.

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BEHAVIOR OF PARTIAL STRENGTH OF BEAM-TO-COLUMN CONNECTION WITH GUSSET PLATE FOR COLD-FORMED STEEL SECTIONS

ASEAN Engineering Journal ◽

10.11113/aej.v10.16601 ◽

2021 ◽

Vol 10 (2) ◽

Author(s):

Muhammad Firdaus ◽

Anis Saggaff ◽

Mahmood Md Tahir ◽

Kiagus Muhammad Aminuddin ◽

Shek Poi Ngian ◽

...

Keyword(s):

Composite System ◽

Experimental Tests ◽

Gusset Plate ◽

Steel Sections ◽

Cold Formed Steel ◽

The Moment ◽

Hot Rolled ◽

Hot Rolled Steel ◽

Steel Section ◽

Good Agreement

The use of cold-formed steel (CFS) as part of a major construction has been rapidly increasing recently, as it is considered viable as an alternative to the conventional hot-rolled steel section. However, information about CFS as part of a non-composite system is still limited as the connection is designed as a pinned connection, only good for roof trusses and wall paneling. The aim of this research is to propose a connection for CFS sections that could enhance the strength of typical CFS connections, from pinned to partial strength connections. This paper presents the behavior of the partial strength of a non-composite beam-to-column connection for a cold-formed steel section where a gusset plate was used as a stiffener. This type of proposed connection for CFS is not limited only to the construction of roof trusses and wall cladding, but is also able to provide better flexural strength in semi-continuous construction. The proposed connections consisted of 6 specimens divided into two types, the first of which were stiffened by the gusset plate and the second of which were enhanced further with the top, seat and web angles. From the results of the experimental tests it was concluded that all the proposed connections can be categorized as partial strength connections, where the strength was more than 25% of the connected beam and suitable for use in semi-continuous construction. A relatively good agreement was recorded for the comparison between the experimental results and the predicted results from the EC3 component method super-imposed with a haunched gusset plate and top, seat and web angle components, which differed in the range of 1.31 to 1.5 times for the moment resistance and 1.07 to 1.37 times for the stiffness of the proposed connections.

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Review on Cold-Formed Steel Connections

The Scientific World JOURNAL ◽

10.1155/2014/951216 ◽

2014 ◽

Vol 2014 ◽

pp. 1-11 ◽

Cited By ~ 4

Author(s):

Yeong Huei Lee ◽

Cher Siang Tan ◽

Shahrin Mohammad ◽

Mahmood Md Tahir ◽

Poi Ngian Shek

Keyword(s):

Structural Characteristics ◽

Steel Structures ◽

Rolled Steel ◽

Steel Connections ◽

Steel Framing ◽

Steel Sections ◽

Cold Formed Steel ◽

Hot Rolled ◽

Hot Rolled Steel ◽

Review Current

The concept of cold-formed light steel framing construction has been widespread after understanding its structural characteristics with massive research works over the years. Connection serves as one of the important elements for light steel framing in order to achieve its structural stability. Compared to hot-rolled steel sections, cold-formed steel connections perform dissimilarity due to the thin-walled behaviour. This paper aims to review current researches on cold-formed steel connections, particularly for screw connections, storage rack connections, welded connections, and bolted connections. The performance of these connections in the design of cold-formed steel structures is discussed.

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EXPERIMENTAL INVESTIGATION OF CFRP STRENGTHENED I-SHAPED COLD FORMED STEEL BEAMS

Jurnal Teknologi ◽

10.11113/jt.v79.10255 ◽

2017 ◽

Vol 79 (5) ◽

Cited By ~ 1

Author(s):

Nahushananda Chakravarthy ◽

Sivakumar Naganathan ◽

Jonathan Tan Hsien Aun ◽

Sreedhar Kalavagunta ◽

Kamal Nasharuddin Mustapha ◽

...

Keyword(s):

Carrying Capacity ◽

Experimental Results ◽

Steel Beams ◽

Load Carrying Capacity ◽

Load Carrying ◽

Length Width ◽

Cold Formed Steel ◽

Formed Channel ◽

Hot Rolled ◽

Hot Rolled Steel

Cold formed steel differ from hot rolled steel by its lesser thickness and weight. The cold formed steel applicable in roof purlin, pipe racks and wall panels etc. Due its lesser wall thickness the cold formed steel member subjected to buckling. The enhancement of load carrying capacity of the cold formed steel member can be achieved by external strengthening of CFRP. In this study cold formed channel members connected back to back to form I shaped cross section using screws. These built up beam members were 300mm, 400mm and 500mm in length with 100mm screw spacing and edge distance of 50mm were chosen for testing. CFRP fabric cut according to length, width of built up beams and wrapped outer surface of beam using epoxy resin. Experiments were carried out in two sets firstly plain built up beams and secondly CFRP wrapped beams. The test results shows that increased load carrying capacity and reduction in deflection due to CFRP strengthening. Experimental results were compared with AISI standards which are in good agreement. Experimental results shows that CFRP strengthening is economic and reliable.

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Confining effect by hot rolled steel and cold formed steel on coconut shell concrete with quarry dust

European Journal of Environmental and Civil engineering ◽

10.1080/19648189.2017.1278724 ◽

2017 ◽

Vol 23 (3) ◽

pp. 368-394 ◽

Cited By ~ 1

Author(s):

K. Gunasekaran ◽

T.S. Lakshmi ◽

K.S. Satyanarayanan

Keyword(s):

Coconut Shell ◽

Rolled Steel ◽

Confining Effect ◽

Cold Formed Steel ◽

Hot Rolled ◽

Hot Rolled Steel ◽

Quarry Dust

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TEMPERATURE RISE OF COLD-FORMED STEEL BUILT-UP BACK-TO-BACK COLUMN UNDER STANDARD FIRE

Jurnal Teknologi ◽

10.11113/jt.v78.8526 ◽

2016 ◽

Vol 78 (5-4) ◽

Author(s):

Fadhluhartini Muftah ◽

Mohd Syahrul Hisyam Mohd Sani ◽

Shahrin Mohammad ◽

Shek Poi Ngian ◽

Mahmood Md Tahir

Keyword(s):

Critical Issue ◽

Standard Fire ◽

Thermocouple Reading ◽

Cold Formed Steel ◽

Lower Temperature ◽

Private Homes ◽

Hot Rolled ◽

Hot Rolled Steel ◽

Failure Temperature ◽

The Web

Cold-formed steel (CFS) has been used for various applications in building structure. Due to its many advantages, the uses of CFS can be widened to build new or to renovate existing single one or two families private homes. However, the fire resistance of the CFS is a critical issue whereby inclined to lose its vigour when it is exposed to fire, compared to hot-rolled steel member. This study takes the opportunity to investigate the application of this material as column members subjected to the standard fire. Four columns were tested. One column with a static load was tested under the ambient condition, while the three other columns were loaded at different degrees of utilisation under the standard ISO 834 fire conditions. The increases of temperature on the column surface were monitored using thermocouple Type K and the analyses of this thermocouple reading was taken to evaluate the mean temperature of the column. The temperature behaviours of back-to-back column for all degrees of utilisation showed that, the web was a lower temperature compared to the flange due to the greater thickness of the web. Meanwhile, the failure temperature of the CFS could reach up to 651.0 ºC for 30.0 % degree of utilisation with 8.0 minutes of resistant time.

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Structural Efficiency Of Cold-Formed Steel Purlins

International conference KNOWLEDGE-BASED ORGANIZATION ◽

10.1515/kbo-2015-0137 ◽

2015 ◽

Vol 21 (3) ◽

pp. 809-814

Author(s):

Vlad Cucu ◽

Daniel Constantin ◽

Dan-Ilie Buliga

Keyword(s):

Economic Impact ◽

Automotive Industry ◽

Weight Ratio ◽

Steel Structures ◽

Building Industry ◽

Rolled Steel ◽

Practical Situation ◽

Cold Formed Steel ◽

Hot Rolled ◽

Hot Rolled Steel

Abstract Cold-formed steel structures represents an alternative to classic buildings made of hot rolled steel profiles which bring a lot of savings based on advanced calculations and also some practical measures in order to provide optimum strength and weight ratio. Due to these advantages, cold-formed steel structures are used in more technical fields including automotive industry, storage industry, military sheltering and of course building industry. The paper is focused on the economic impact of using lightweight members for the main applications of these structures – roof structures and cladding support. The comparison will be made between classic system with hot formed purlins and advanced lightweight purlins made of cold-formed steel elements, in the same practical situation.

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Study on Strength and Behaviour of Cold-Formed Steel Built-up Columns

Recent Advancements in Geotechnical Engineering ◽

10.21741/9781644901618-2 ◽

2021 ◽

Keyword(s):

Steel Structures ◽

Strength Prediction ◽

Ultimate Capacity ◽

Specific Design ◽

Design Strength ◽

Heavy Load ◽

Compression Members ◽

Cold Formed Steel ◽

Hot Rolled ◽

Hot Rolled Steel

Abstract. Cold-formed Steel (CFS), a sort of steel weighing lesser, suits to be a wise choice of material in the construction of steel structures. It has more benefits that indeed make CFS get famous. Effortless installation can be accomplished with the CFS. It also renders a factor that only a few materials show, that is, longevity. Corrosion does not affect the CFS. Employing under moderate loads, CFS finds to be economically feasible when compared with hot-rolled steel. It can be used as compression members comprising single or built-up members. Since a single member cannot sustain the heavy load, the built-up members can be utilized. Open and closed sections are the two sorts of built-up profiles and these profiles show diverse buckling characteristics. This paper lays out a clear outline of the research works done on providing design recommendations to the codes by employing diverse built-up sections. It is reviewed by categorizing the investigated research works based on the kind of CFS sections chosen by each researcher. It was evident from the study that after validation, many researchers have done parametric study on CFS built-up columns to assess the accuracy of the design strength prediction by code specifications. Many codes failed to estimate the section’s ultimate capacity accurately as there are no specific design equations.

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Experimental Investigation on Flexural Behavior of Cold Formed Beams with Lightweight Concrete

Materials Science Forum ◽

10.4028/www.scientific.net/msf.992.149 ◽

2020 ◽

Vol 992 ◽

pp. 149-155

Author(s):

AL-Hasnawi Yasser Sami Ghareb ◽

Omar Ismael Alhashimi ◽

Andrey V. Shevchenko ◽

Nowruzi Mohammad Shoja

Keyword(s):

Lightweight Concrete ◽

Weight Ratio ◽

High Strength ◽

Flexural Behavior ◽

Project Work ◽

Wide Range ◽

Cold Formed Steel ◽

Reinforcement Bar ◽

Hot Rolled ◽

Hot Rolled Steel

In recent years, thin-walled, cold-formed steel (CFS) structural members have gained expanding use in building construction and various sorts of structural systems [1,2,3].The utilization Cold-Formed Steel (CFS) structures has become progressively popular in different fields of building technology. The reasons behind the developing popularity of these products include their ease of fabrication, high strength/weight ratio and suitability for a wide range of applications. These advantages can result in more economic designs, as compared with hot-rolled steel, especially in short-span applications. In this project work attempt has been made to use Cold formed steel section as replacement to conventional steel reinforcement bar.

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