Shear Strength of a Cold-Formed Steel Sheet in Bolted Connections Using Oversized Holes

2013 ◽  
Vol 139 (5) ◽  
pp. 860-864 ◽  
Author(s):  
Cheng Yu ◽  
Ke Xu
Keyword(s):  
Shear Strength ◽  
Steel Sheet ◽  
Bolted Connections ◽  
Cold Formed Steel

High-strength cold-formed steel framed shear wall with steel sheet sheathing

2021 ◽  
Vol 162 ◽  
pp. 107584
Author(s):  
Wenying Zhang ◽  
Xiangzhi Xu ◽  
Yang Liu ◽  
Cheng Yu ◽  
Xuechun Liu ◽  
...  
Keyword(s):  
Steel Sheet ◽  
High Strength ◽  
Shear Wall ◽  
Cold Formed Steel

Experimental Investigations on Spot Welded Built-Up Cold-Formed Steel Beams

2018 ◽  
Vol 1146 ◽  
pp. 142-151
Author(s):  
Viorel Ungureanu ◽  
Ioan Both ◽  
Mircea Burca ◽  
Ştefan Benzar ◽  
Thai Hoang Nguyen ◽  
...  
Keyword(s):  
Spot Welding ◽  
Steel Sheet ◽  
Experimental Program ◽  
Experimental Investigations ◽  
Steel Beams ◽  
Technological Solution ◽  
Research Project ◽  
Steel Sheets ◽  
Cold Formed Steel ◽  
Thin Walled

Within the WELLFORMED research project, ongoing at the CEMSIG Research Center of the Politehnica University of Timisoara, a new technological solution was proposed for built-up beams made of corrugated steel sheets for the web and thin-walled cold-formed steel profiles for the flanges, connected by spot welding. The research project integrates an extensive experimental program on such beams, using full scale specimens, to demonstrate the feasibility of the proposed solutions and to assess their performance, followed by numerical simulations to characterize and optimize the connecting details. The present paper presents the results of a large experimental program, on small specimens subjected to shear, consisting of two or three layers of steel sheet connected by spot welding.

Residual shear capacity of cold-formed steel-to-sheathing screwed connections at elevated temperatures

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kun Liu ◽  
Wei Chen ◽  
Jihong Ye ◽  
Jian Jiang ◽  
Wenwen Chen ◽  
...  
Keyword(s):  
Shear Strength ◽  
Elevated Temperatures ◽  
Input Parameter ◽  
Single Layer ◽  
Shear Capacity ◽  
Base Layer ◽  
Residual Shear Strength ◽  
Content Type ◽  
Cold Formed Steel ◽  
Fire Conditions

Purpose Most previous thermal-mechanical modeling of cold-formed steel (CFS) walls did not consider the failure of screwed connections under fire conditions because of the limited data of such connections at elevated temperatures. Design/methodology/approach In this study, 285 steady-state tests are conducted on CFS screwed connections with single-layer gypsum plasterboard (GPB) and Bolivian magnesium board (BMB) sheathing at ambient and elevated temperatures. The failure of these connections is described as the breaking of the loaded sheathing edge. Findings For the BMB sheathing screwed connections, hydrochloric acid gas is generated and released above 300°C, and the shear strength becomes much less than that of the GPB sheathing screwed connection above 370°C. Hence, BMB may not be suitable for use as the face-layer sheathing of CFS walls but is still recommended to replace GPB as the base-layer sheathing. The major influencing parameters on the shear strength of screwed connections are identified as the type of sheathing material and the loaded sheathing edge distance. Originality/value Based on the previous and present test results, a unified expression for the residual shear strength of screwed connections with GPB and BMB is proposed at ambient and elevated temperatures with acceptable accuracy. It can be used as the basic input parameter of the numerical simulation of the CFS structures under fire conditions.

Structural Performance of Cold-Formed Steel Structures with Bolted Connections

2005 ◽  
Vol 8 (3) ◽  
pp. 231-245 ◽  
Author(s):  
K. F. Chung
Keyword(s):  
Steel Structures ◽  
Internal Force ◽  
Structural Performance ◽  
Bolted Connections ◽  
Structural Behaviour ◽  
Moment Connections ◽  
Analysis And Design ◽  
Lap Shear ◽  
Numerical Predictions ◽  
Cold Formed Steel

This paper presents a number of experimental and theoretical investigations into the structural behaviour of cold-formed steel structures with bolted connections. Firstly, the basic deformation characteristics of bolted fastenings between cold-formed steel strips in lap shear tests is described, and advanced finite element modelling with solid elements as well as contact elements is carried out for comparison. Secondly, the structural behaviour of lapped Z sections with bolted moment connections is reported, and both analytical and numerical predictions on strength and stiffness of lapped Z sections are presented. Finally, the structural performance of double span lapped Z purlins is investigated numerically where the effects of lapped Z sections over internal supports on the internal force distributions along the purlin members are examined. The description is intended to provide both analysis and design methods as well as understandings to structural engineers, enabling them to design and build cold-formed steel structures rationally with improved structural performance.

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