RESEARCH ON THE PERFORMANCE OF STEEL JOINT CONNECTORS IN CROSS-BEAM CONSTRUCTIONS MADE OF GLULA
DOI:
https://doi.org/10.31650/2707-3068-2025-29-24-33Keywords:
research of the connector of the cross-beam structure node, testing of wooden structuresAbstract
Cross-beam systems involve the use of beams that are connected to each other at a
certain angle, which allows for effective load bearing and increased structural rigidity. Connections using bolted joints with metal connectors are particularly relevant in cases where it is necessary to increase resistance to dynamic and static loads. The paper presents the results of a study of the stress-strain state of a joint with an original connector of a cross-beam slab made of glued wood under the influence of a static load. Two samples of the joint connection were manufactured for testing. The first is a prototype of a cross-beam slab joint, supported at the corners, with variable cross-sections of elements, and the second is a control sample with constant cross-sections of elements along their entire length. A distinctive feature of the connector for joining frame elements is the presence of a diagonal fastening element, the connecting ends are made at an angle of 45º to the longitudinal central axis of the connecting end of the corresponding frame element, and the two frame elements of the building structures are connected by the edges of their connecting ends, forming an angle of 90° between them. To analyse the stress-strain state of the element, a spatial computer model was developed in the LIRA-CAD software package. The stiffness characteristics of the volumetric finite elements were set taking into account the anisotropic properties of wood in accordance with regulatory requirements. The node was modelled using rod and plate elements. The results of the numerical experiment and testing showed that the node with the proposed connector had sufficient load-bearing capacity.
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