Research on static performance of T-shaped stiffener Reinforced Box Space joints under Spatial Loading

Abstract

The problem of inner partition reinforced box column are the weld quality, time-consuming and laborious. In view of the problem, T-shaped stiffener externally reinforced box space beam-column joinst are proposed in this paper. The finite element simulation was used to study the evolution of the initial stiffness of the T-shaped stiffener reinforced joints under spatial static loading, and the mechanism of the mutual force transfer between the T-shaped stiffener and the H-shaped beam and square column are revealed. The beam section height, the width of the T-shaped stiffener web, the height of the T-shaped stiffener flange are analyzed which are the T-shaped stiffener geometric parameters. The static performance of the reinforced box space joints are gained. The results show that the plastic hinge of the T-shaped stiffener reinforced the space joint is formed in the distance from the beam flange which is the point connecting with the end of the T-shaped stiffener. Such as the stress distribution is reasonable. The bearing capacity, plastic limit bending moment and initial stiffness of the box space joint can be effectively improved with increasing of the beam section height, stiffener web width and stiffener flange height. Therefore, the external T-shaped stiffener reinforced square steel column H-beam space joint has good static performance.