Publicacións

@article{carrero_new_2024,

title = {New enhanced hybrid glulam-framed OSB wall for tall timber buildings},

author = {Tulio Carrero and Jairo Montaño and Luis Perez and Ghasan Doudak and Hernán Santa María and Matías F. Chacón and Pablo Guindos-Bretones},

url = {https://www.sciencedirect.com/science/article/pii/S2352012424019234},

doi = {10.1016/j.istruc.2024.107770},

issn = {2352-0124},

year  = {2024},

date = {2024-12-01},

urldate = {2026-07-28},

journal = {Structures},

volume = {70},

pages = {107770},

abstract = {The article covers the cyclic lateral performance of a new hybrid timber shear wall called GLUlam-Frame OSB (GLUFO), composed of glulam frames connected to OSB (Oriented-Strand Board) sheathing panels and conventional nails. The key constructive detail of this new wall relies in that the OSB sheathings are embedded at grooved glulam members, which largely enhance the lateral strength capacity and stiffness of the element than the conventional light-frame timber or Cross-Laminated Timber (CLT) walls. The experimental campaign includes the Framing-to-Panel (F2P) connections and full-scale wall testing under cyclic loads. The wall failed due to a horizontal tensile fracture along the top beam, mainly caused by insufficient nail spacing. However, the wall reached a lateral drift of 1.48 % and a ductility of 5.8, which could have been higher if the failure had not occurred. Moreover, the proposed wall is three times stronger and stiffer than a conventional CLT wall and comprises one-fourth of the wood amount (0.89 m3) compared to a CLT wall of similar strength capacity. Finally, the proposed wall was characterized by a nonlinear macro-Finite Element (FE) model, whose F2P connections were simulated with the MSTEW hysteretic model, and three Single-Degree-Of-Freedom (SDOF) models, each with a different hysteretic model from the literature (MSTEW, DowelType, and ASPID). All numerical models show an error of up to 8 % for the lateral strength capacity, while the SDOF models are more precise for the energy dissipation prediction, with a error lower than 4.3 % and R2 for their history over 99.5 %. Hence, both numerical models provide a feasible alternative to simulate this new wall prototype.},

keywords = {Cyclic full-scale wall testing, Framing-to-panel timber connection, Hybrid glulam-framed OSB wall, Hysteretic timber models, Lateral strength capacity, Nonlinear finite element, Timber shear wall},

pubstate = {published},

tppubtype = {article}

}

@article{chacon_p2pe_2024,

title = {P2PE: A finite element formulation for panel-to-panel cross-laminated timber connections},

author = {Matías F. Chacón and Pablo Guindos-Bretones},

url = {https://www.sciencedirect.com/science/article/pii/S0045794924001330},

doi = {10.1016/j.compstruc.2024.107404},

issn = {0045-7949},

year  = {2024},

date = {2024-08-01},

urldate = {2026-04-21},

journal = {Computers & Structures},

volume = {300},

pages = {107404},

abstract = {This paper presents a new multi-spring finite element formulation called P2PE that simulates the cyclic behavior of panel-to-panel Cross-Laminated Timber (CLT) connections. The formulation comprises five types of uncoupled linear/nonlinear springs representing the fasteners and contact between panels. For instance, the in-plane fastener behavior is simulated with a co-rotational spring and the Modified Richard–Abbott (MRA) model, which is adapted to account for the asymmetry, pinching, degradation, and low-cycle fatigue of timber connections. The model was implemented into ANSYS through user-element/materials, including all computer implementation steps, and can be freely downloaded. The model's response and sensitivity were studied in three demonstrative CLT diaphragms, and it was validated at the connection and assembly stage with benchmark tests. In the first stage, the fastener model was verified with four cyclic CLT connections, while in the second stage, the model was validated with three medium-to-large scale CLT assemblies. The model accurately predicts the stiffness, strength, deformation, slip, and failure mechanisms of both stages. Finally, a parametric analysis of in-plane bending CLT diaphragms was assessed by varying their panel dimensions. This analysis demonstrated that diaphragms with slender panels have larger capacities, fastener energy dissipation, and shear slips but lower ductilities than shorter ones.},

keywords = {CLT diaphragms, Cross-laminated timber, Hysteretic timber models, Nonlinear finite element model, Panel-to-panel CLT connection, Parametric analysis},

pubstate = {published},

tppubtype = {article}

}