Browsing by Author "Montaño, J."

Now showing 1 - 7 of 7
  • No Thumbnail Available
    Item
    A simplified approach to assess the technical prefeasibility of multistory wood-frame buildings in high seismic zones
    (2022) Berwart, S.; Estrella, X.; Montaño, J.; Santa-María, H.; Almazán, J.L.; Guindos Bretones, Pablo
  • Thumbnail Image
    Item
    Development of an amplified added stiffening and damping system for wood-frame shear walls
    (2020) Montaño, J.; Maury, R.; Almazán, J.L.; Estrella, X.; Guindos Bretones, Pablo
  • Thumbnail Image
    Item
  • No Thumbnail Available
    Item
    Framework invention of hybrid walls with cross laminated timber for buildings in Chile
    (2021) Carrero, T.; Montaño, J.; María, H.S.; Guindos Bretones, Pablo
  • Thumbnail Image
    Item
    New Glulam-Framed Shear Wall Concept with Enhanced Behaviour Characteristics for Tall Timber Buildings in Seismic Areas
    (2022) Carrero, T.; Montaño, J.; Perez, L.; Doudak, G.; María, H.S.; Guindos Bretones, Pablo
  • No Thumbnail Available
    Item
    Seismic behavior of innovative hybrid CLT-steel shear wall for mid-rise buildings
    (2021) Carrero, T.; Montaño, J.; Berwart, S.; Santa María, H.; Guindos, P.
    This paper examines the seismic behavior of CLT-steel hybrid walls at 6- and 10-story heights to increase seismic force resistance compared to conventional wooden walls. The ultra-strong shear walls proposed in this paper are called Framing Panel Shear Walls (FPSW), which are based on a robust articulated steel frame braced with CLT board panels and steel tendons. Timber structures are well-known for their ecological benefits, as well as their excellent seismic performance, mainly due to the high strength-to-weight ratio compared to steel and concrete ones, flexibility, and redundancy. However, in order to meet the requirements regarding the maximum inter-story drifts prescribed in seismic design codes, a challenging engineering problem emerges, because sufficiently resistant, rigid and ductile connections and lateral assemblies are not available for timber to meet both the technical and economical restrictions. Therefore, it is necessary to develop strong and cost-effective timber-based lateral systems, in order to become a real alternative to mid- and high-rises, especially in seismic countries. In this investigation, the dynamic response of cross-laminated timber (CLT) combined with hollow steel profiles has been investigated in shear wall configuration. After experimental work, research was also carried out into numerical modelling for simulating the cyclic behavior of a hybrid FPSW wall and the spectral modal analysis of buildings of 6- and a 10-stories with FPSW. A FPSW shear wall can double the capacity and stiffness.
  • No Thumbnail Available
    Item
    Seismic performance factors for timber buildings with woodframe shear walls
    (2021) Estrella, X.; Guindos, P.; Almazán, J.L.; Malek, S.; Santa María, H.; Montaño, J.; Berwart, S.
    Seismic performance factors are an engineering tool to estimate force and displacement demands on structures designed through linear methods of analysis. In Chile, the NCh433 standard provides the regulations, requirements, and factors for seismic design of several structural typologies and systems. However, when it comes to wood frame structures, previous research has found that the NCh433 provisions are highly restrictive and result in over-conservative designs. Therefore, this paper presents an experimental and numerical investigation aimed at proposing new, less restrictive seismic performance factors for wood frame buildings. Following the FEMA P-695 guidelines and a novel ground motion set for subduction zones, this research embraced: (1) testing of several full-scale specimens, (2) developing of detailed and simplified numerical models, and (3) analyzing the seismic performance of a comprehensive set of structural archetypes. 201 buildings were analyzed and results showed that changing the current NCh433 performance factors from R = 5.5 & Delta(max) = 0.002 to R = 6.5 & Delta(max) = 0.004 decreases the average collapse ratio of wood frame structures by 13.3% but keeps the collapse probability below 20% for all the archetypes under study. Besides, it improves the cost-effectiveness of the buildings and enhances their competitiveness when compared to other materials, since savings of 40.4% in nailing, 15.9% in OSB panels, and 7.3% in timber studs were found for a 5-story building case study. Further analyses showed that the buildings designed with the new factors reached the "enhanced performance objective" as defined by the ASCE 41-17 standard, guaranteeing neglectable structural and non-structural damage under highly recurring seismic events. Finally, dynamic analyses revealed that the minimum base shear requirement Cmin of the NCh433 standard is somewhat restrictive for soil classes A, B, and C, leading to conservative results compared to archetypes where the Cmin requirement did not control the structural design.