Advanced Steel Construction

Vol. 16, No. 4, pp. 370-379 (2020)


 BUCKLING BEHAVIOR OF EQUAL ANGLE RESTRAINED BY

WELD SEAM AT BOTH ENDS: NUMERICAL ANALYSIS

 

Zhong-Wei Zhao 1, 2, *, Xiong-Tao Fan 1, Xiang-Yang Jian 1, Bing Liang 3 and Hai-Qing Liu 1

1 School of Civil Engineering, Liaoning Technical University, Fuxin 123000, China;

2 School of Civil Engineering, Southeast University, Nanjing, Jiangsu, 211189, China;

 3 School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China

* (Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

Received: 8 March 2020; Revised: 12 September 2020; Accepted: 18 September 2020

 

DOI:10.18057/IJASC.2020.16.4.10

 

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ABSTRACT

Welding the reinforced component on the surface of a steel structure is a common method for reinforcing steel structures in practical engineering. Intermittent weld has been recognized as an efficient method for reducing the amount of field welding work and the cost of reinforcing work. The angles welded by intermittent weld have been widely utilized in practical engineering, such as the strengthening of steel column presented in this work. However, the mechanical behavior of angles welded by intermittent weld has not been clearly clarified. The buckling behavior of angles with weld limbs (AWL) is systematically investigated in this work to determine their loading capacity. The buckling factor and slenderness of AWLs are derived through a numerical analysis. The influences of weld length (Lw), yield strength (fy), residual stress, and initial geometrical imperfection on the buckling factor (φcr) are also investigated. The results indicate that material strength can be fully played out when applying intermittent weld. The results derived in this paper can provide reference for the design of angles welded by intermittent weld.

 

KEYWORDS

Angles with weld limbs, Buckling factor, Compression–flexure member, Bearing capacity, Finite element analysis


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