Study on Designs to Prevent Fracture in Beam-to-Welded Box Column Connection

Partl Study of the Stress in Vicinity of Joint by Finite Element Analysis

Abstract

There has been a concern on fracture in weld zones between interior diaphragms and a built-up box column at a beam-to-column connection. The concern may become increased when large heat input welding such as electro-slag welding is employed. From this background, it is necessary to consider designs to prevent fracture in beam-to-welded box column connection. Then, in order to confirm the stress in vicinity of joint, finite element analyses were carried out first. It was shown through the analyses that the longitudinal stress area of beam web was smaller than that of the reference 5)'s calculation equation. In addition, a parametric study showed that the stress distributions were influenced by the thickness of column plate, the thickness of diaphragm plate, etc.