Numerical Parametric Study on Hysteresis Performance of the Novel Dovetail Joint for Single-layer Grid Shells Subjected to Out-of-Plane Bending Moment

Mashrah, W.A.H.; Chen, Zhihua; Rima, Boufendassa; Liu, Hongbo

doi:10.1007/s12205-023-1615-6

Cited by 1 publication

(1 citation statement)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A bolt-column-plate joint [13] has enough out-of-plane rotational stiffness, but is weak under in-plane bending. Ball-cylinder joints [14], pre-embedded bolt joints [15,16], semi-rigid pin joints [17,18], dovetail joints [19][20][21][22], assembled hub joints [23][24][25], and SLO joints [26] require high installation accuracy since they connect shell members by threading the bolts into holes with internal threads instead of conventional bolt holes with installation clearance. Prestressed high-strength bolt joints [27] and semi-rigid pin joints [17,18] have complex joint details, similar to precision mechanical parts.…”

Section: Introductionmentioning

confidence: 99%

Rotational Stiffness Investigation and Parametric Analysis of a Novel Assembled Joint in Lattice Shells

Xu,

Zhu,

et al. 2024

Buildings

View full text Add to dashboard Cite

Although there are currently many types of lattice shell joints with different characteristics, assessing the flexural capacity of lattice shell joints is always a great challenge. In this paper, a fan-shaped assembled joint and a welded joint for comparison were subjected to bending tests to investigate the flexural behavior and rotational stiffness of the assembled joint. The strain distribution, load–displacement curve, moment–rotation curve, and damage modes of key parts were analyzed to determine the vulnerable parts of the joints. Our test results show that, with an initial rotational stiffness of about one third of that of the welded joint, the assembled joint specimen exhibits the obvious characteristics of a semi-rigid joint. The finite element analysis results were in good agreement with the experimental results. The results of our parametric analysis show that the rotational stiffness and ultimate moment of the assembled joint increase with increases in the spacing of the bolts and the number of bolts. The performance of the high-strength bolts had a significant influence on the flexural stiffness of the assembled joints. The spacing of the bolts and the number of bolts for the assembled joint are suggested to be greater than the height of the member section and more than three, respectively. The proposed theoretical formula can approximately simulate the initial rotational stiffness of the joint. More in-depth investigations are required in the future for assessing the mechanical behavior of FSA joints subjected to combined bending–compression loads.

show abstract