scholarly journals A Comprehensive Analysis of Light Weight Steel Structure and Wind Load

2021 ◽  
pp. 396-403
Author(s):  
Nitin Khare ◽  
Dr. Rajeev Chandak
Keyword(s):  
Structural Damage ◽  
Steel Structure ◽  
Steel Structures ◽  
Light Weight ◽  
Structure Damage ◽  
Cold Formed Steel ◽  
Strong Winds ◽  
And Performance ◽  
Hot Rolled ◽  
Extreme Winds

Review to hot-rolled steel structures, cold-formed steel structures are susceptible to extreme winds because of the light weight of the building and its components. Many modern cold-formed steel structures have sustained significant structural damage ranging from loss of cladding to complete collapse in recent cyclones. This article first provides Review some real damage cases for light steel structures induced by the high winds. After that, the paper reviews research on the damage analysis and evaluation of light steel structures caused by strong winds, which include connection failure, fatigue failure, purlin buckling, and primary frame component instability problems. Moreover, this review will mention some applications of structure damage assessment methods in this area, such as vulnerability analysis and performance-based theory, etc.

Mechanical Properties Prediction for Cold-formed Steel Angle Connection with Various Flange Cleat Thickness

2015 ◽  
Vol 74 (4) ◽  
Author(s):  
Yeong Huei Lee ◽  
Cher Siang Tan ◽  
Shahrin Mohammad ◽  
Yee Ling Lee
Keyword(s):  
Mechanical Properties ◽  
Numerical Models ◽  
Steel Structures ◽  
Rotational Stiffness ◽  
Steel Angle ◽  
Cold Formed Steel ◽  
Mechanical Properties Prediction ◽  
Thin Walled ◽  
Angle Connection ◽  
Hot Rolled

Connection is an important element in structural steelwork construction. Eurocode does not provide adequate design information for mechanical properties prediction of top-seat flange cleat connection, especially for thin-walled cold-formed steel structures. Adopting hot-rolled design with neglecting thin-walled behaviour could lead to unsafe or uneconomic design. This research aims to provide accurate mechanical properties prediction for bolted top-seat flange cleat connection in cold-formed steel structures. The scope of work focuses on the effect of various thickness of the flange cleat to the rotational stiffness and strength behaviour of a beam-to-column connection. Experimentally verified and validated finite element modelling technique is applied in the parametric investigation. Two categories of flange cleat thickness, ranged from 2 mm to 40 mm are studied. From the developed numerical models, it is observed that Eurocode has overestimated the initial rotational stiffness prediction, calculated with component method. The over-estimation would influence the overall stiffness of structures and force distribution within the components. As a conclusion, a set of newly proposed accurate predictions for initial rotational stiffness and strength of cold-formed steel top-seat flange cleat connection, with the influence of the thickness of flange cleat is presented.

scholarly journals Review on Cold-Formed Steel Connections

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
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.

Design Study of Steel Structure Fire-Retardant Coatings under High Temperature (Fire) Conditions

2012 ◽  
Vol 594-597 ◽  
pp. 849-859
Author(s):  
Man Li Ou ◽  
Wei Jun Cao ◽  
Long Min Jiang ◽  
Hui Cao
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Fire Resistance ◽  
Fire Protection ◽  
Structural Damage ◽  
Fire Retardant ◽  
Steel Structure ◽  
Steel Structures ◽  
Strength And Stiffness ◽  
Fire Conditions

As the result of great changes occurring to mechanical properties under high temperature (fire) conditions, steel structures will soon lose the strength and stiffness and lead to structural damage. Through analysis of the steel structure fire resistance design methods under the conditions of high temperature (fire), this article explores the most used fire protection methods in steel structures—brushing or painting fire-resistant coatings, studies the fire-resistance theory of steel structure under fire conditions; in addition, the author proposes the reasonable thickness of the steel structure fire retardant coating of fire-resistant design through design examples.

scholarly journals Structural Efficiency Of Cold-Formed Steel Purlins

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.

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

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.

Effects of Snow Load on Light-Weight Steel Structures

2014 ◽  
Vol 501-504 ◽  
pp. 777-781 ◽  
Author(s):  
Fang Hui Li ◽  
Fan Meng
Keyword(s):  
Construction Industry ◽  
Rapid Development ◽  
Steel Structure ◽  
Steel Structures ◽  
Light Weight ◽  
Structural System ◽  
Snow Load ◽  
The Impact ◽  
Research Situation ◽  
Modern Building

With the rapid development of economic and construction industry, light-weight steel structural system is widely used in the modern building construction. While, the light-weight steel structures are more sensitive under the effect of snow load than the other structure systems according to the data from the large amount of accidents of steel structure failures, which indicated the necessary and urged us to focus on the impact of snow on the light-weight steel structures. This paper introduces the current research situation and analyzes the method of snow load determination on gable frames in the load code of different countries, and provides some suggestions on the snow load design of light-weight steel structures finally.

Frequency Domain Analysis on Horizontal Wind-Induced Dynamic Responses of Light-Weight Steel Structures with Gabled Frames

2011 ◽  
Vol 71-78 ◽  
pp. 3610-3614
Author(s):  
De Zhi Liang ◽  
Xiao Juan Song
Keyword(s):  
Technical Specification ◽  
Steel Structure ◽  
Steel Structures ◽  
Wind Load ◽  
Dynamic Responses ◽  
Horizontal Wind ◽  
Light Weight ◽  
Natural Period ◽  
Finite Element Software ◽  
Wind Induced Vibration

Wind-induced dynamic responses of light-weight steel structures with gabled frames are significant because of their light weight, small stiffness and long natural period, according to Reference [1]. While the current "Technical specification for steel structure of light-weight buildings with gabled frames" (CECS102:2002) and "Lode code for the design of building structures” (GB50009-2001) generally don’t consider the wind-induced vibration influence of gabled frames. Based on rational model, the light-weight steel structure with gabled frame subjected to wind load is simulated by finite element software. The numerical simulation about horizontal wind-induced vibration response is carried out. Calculated results show that the influence of horizontal fluctuating wind load is harmful for light-weight steel plants with gabled frames and suggest that more attention should be paid in design.

scholarly journals STUDI EKSPERIMENTAL TEKUK LOKAL BATANG BAJA RINGAN CANAI DINGIN

2019 ◽  
Vol 3 (1) ◽  
pp. 16
Author(s):  
Astrida Puspita Sari ◽  
Agus P Rahamadi ◽  
Stefanus Adi Kristiawan
Keyword(s):  
Local Buckling ◽  
Steel Structure ◽  
Building Construction ◽  
Light Weight ◽  
Load Carrying Capacity ◽  
The Finite Element Method ◽  
Channel Section ◽  
Load Carrying ◽  
Steel Column ◽  
Cold Formed Steel

<p><em>Cold-formed steel structure is the most chosen alternative in the world of building construction nowadays, because of its light weight,  fast and easy to construct. This study conducted local buckling study on cold-formed steel channel section to study the critical load of cold-formed steel column when the load centric and eccentric and to indentify the failure mode through numerical and experimental study. The local buckling of cold-formed steel channel section was analyzed analytically using SNI 7971: 2013, numerically using Abaqus and Experimental at centric (COG) and eccentric (ECC) loading. The centric load calculated analytically with the formula SNI 7971: 2013 is 12.37% otherwise eccentic load 31.52% greater than the numerical analysis of the Finite Element Method (FEM) which is verified by the Experimental test. In the case of the channel section eccentric loading, the load carrying capacity decreased by 21% compared to centric loading.</em></p>

scholarly journals Structural features of cold-formed steel profiles

2018 ◽  
Vol 4 (2) ◽  
pp. 77
Author(s):  
Osman Tunca ◽  
Ferhat Erdal ◽  
Arif Emre Sağsöz ◽  
Serdar Çarbaş
Keyword(s):  
Building Materials ◽  
Green Building ◽  
Steel Structure ◽  
Structural Features ◽  
Rolled Steel ◽  
Steel Sections ◽  
Cold Formed Steel ◽  
Thin Walled ◽  
Hot Rolled ◽  
Hot Rolled Steel

Using capacity of cold-formed steel sections increases thanks to the opportunities which are offered by the developing technology. Low production cost and variety of profiles that can be produce easy, fast, high quality provide to improve its popularity as a structural material. In production, Sulphur and Phosphorous accumulation region occurs at intersection region of flanges and web of hot rolled steel profile. This causes to decrease strength of profile. Other difference between cold-formed and hot rolled steel sections is that mechanical properties of steel material homogeneously distributes throughout the profile. Both in frame and truss systems, cold-formed steel profiles develop both as main and secondary bearing element. These present variety options to the designers with pure, galvanized, aluminized applications. As with many building materials, mechanical behavior of cold-formed steel profile is quite complex due to the nature of thin walled steel sections. Design and analysis methods of cold-formed steel profile are rapidly shaped day by day. The general theory of beams investigated in past studies make possible analyses of cold-formed steel profile. Moreover, in structural systems, using of cold-formed steel profile provide height strength besides sustainable, environmentalist, green building because it requires less material and cost. Although these profiles have many advantages, use of cold-formed steel profiles in our country structures is rather limited unfortunately. New steel construction regulations in Turkey also do not mention cold-formed thin walled steel structure. Main purpose of this study reviews structural specifications of cold-formed steel profiles which are applied world-wide.

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