RT info:eu-repo/semantics/article
T1 Structural behaviour of demountable tubular column-to-base plate joints with welded studs
A1 García García, Ismael
A1 López-Colina Pérez, Carlos
A1 Serrano López, Miguel Ángel
A1 López Gayarre, Fernando
A1 Lorenzana Ibán, Antolín
K1 Demountable construction
K1 Tubular structures
K1 Welded studs
K1 Bolted connections
K1 Joint characterization
K1 Component method
K1 33 Ciencias Tecnológicas
AB Demountable joints play a key role in enabling structural reuse and sustainable construction. By reducing ma-terial waste and facilitating future adaptability, they contribute to more resource-efficient building lifecycles.This study presents a novel demountable column-to-base plate joint for tubular steel structures, designed toenable disassembly and structural reuse in alignment with circular economy principles. The proposed connec-tion, composed of four angle cleats and welded studs, is evaluated through full-scale testing and validated finiteelement modelling. A validated numerical model was first developed using data from eight experimentally testedjoints, achieving good agreement with measured rotational stiffness, with a mean absolute percentage error of1.87 %. This model was then used to simulate an extended set of 23 configurations to investigate the influence ofgeometric parameters. Results reveal that wall thickness exerts a structural effect beyond its contribution to themoment of inertia, which may be attributed to local deformation mechanisms or elastic instabilities influencingjoint stiffness in slender tubular profiles. When stiffness values are properly scaled, they collapse onto a singletrend governed by the slenderness ratio, enabling the derivation of a generalized stiffness decay law forgeometrically similar tubular joints. A refined component-based analytical model was also developed, capturingthe observed trends and providing conservative estimates with acceptable accuracy. Compared to Eurocodeformulations, which exhibit limited predictive capability for this joint typology, the proposed models offer areliable and practical design tool for demountable tubular steel connections
PB Elsevier
SN 0143-974X
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/78616
UL https://uvadoc.uva.es/handle/10324/78616
LA eng
NO Journal of Constructional Steel Research, 2025, vol. 235, p. 109867
NO Producción Científica
DS UVaDOC
RD 08-nov-2025