Browsing by Author "Almazan Campillay, José Luis"

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    Case study: Seismic and gravitational design of 15-story office and residential building archetypes with a semirigid clt diaphragm and reinforced concrete shear walls in Chile
    (World Conference on Timber Engineering (WCTE), 2025) Barrios Pi, Sebastián Andres; Veliz Sanzana, Fernando Daniel; Berwart Astudillo, Sebastián Ignacio; Montaño Castañeda, Jairo Alonso; Araya Miranda, Raúl Eduardo; Lagos, Guzmán Jorge; Beltrán Beltrán, Martín Aleksei Ignacio; Chacón De La Cruz, Matías Fernando Nicolás; Valdivieso Cascante, Diego Nicolás; Guindos Bretones, Pablo; Almazan Campillay, José Luis; Santa María, Oyanedel Hernan
    This study is part of the "Ciudad Madera" technological consortium, which seeks to promote widespread wood construction in Chile, whose seismic code provides no guidance for cross-laminated-timber (CLT) seismic diaphragms. Currently, this lack of a design methodology for Hybrid Mass-Timber-Reinforced-Concrete (HMT-RC) buildings, has pushed a tendency for structural designers to solely rely on the concrete topping as the seismic horizontal diaphragm element. This study validates HMT - RC and develops a seismic-design method for buildings up to 15 stories high, with CLT floor system performing as the seismic diaphragm. Twenty monotonic/cyclic connector tests and six full-scale 4 m × 4 m Radiata-pine CLT diaphragm tests will calibrate nonlinear models of office and residential building archetypes, analyzed in a 72-case parametric matrix (height, seismic zone, soil class, design philosophy). Findings show: (i) RC-core and coupling-beam detailing governs drift, (ii) flooring size is controlled by a vibration criterion, and (iii) commercial timber column-to-column splices meet seismic inter-story rotation demands.
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    Testing the influence of system effects on the lateral response in t-shaped wood frame shear walls
    (2025) Valdivieso Cascante, Diego Nicolás; Almazan Campillay, José Luis; Lopez-García González, Diego; Montaño Castañeda, Jairo Alonso; Liel A.B.; Guindos Bretones, Pablo
    This paper examines the impact of transverse shear walls (TSW), out-of-plane bending stiffness of diaphragms (FDIA), and axial (gravity) loading (AXL) on the lateral response of strong wood-frame shear walls (SWs) in multistory light frame timber buildings (LFTBs). Experimental tests assessed the lateral cyclic response of T-shaped SW assemblies with and without diaphragms and gravity load. Tests showed that the TSW effect enhances the lateral stiffness and strength but reduces the deformation capacity. The FDIA and AXL effects further influence the stiffness and strength and compensate in part for the reduction of the deformation capacity due to the TSW effect. Diaphragms also made the T-shaped SW response more symmetrical and improved the evolution of secant stiffness, cumulative dissipated energy, and equivalent viscous damping as the lateral drift increases. Numerical analyses of a theoretical building model with T-shaped SWs showed significant reductions in lateral drift and uplift compared to those of Planar SWs alone, highlighting the importance of considering system effects in the seismic design of LFTBs.