Print Email Facebook Twitter Comparing In-Plane Equivalent Shear Stiffness of Timber Diaphragms Retrofitted with Light and Reversible Wood-Based Techniques Title Comparing In-Plane Equivalent Shear Stiffness of Timber Diaphragms Retrofitted with Light and Reversible Wood-Based Techniques Author Mirra, M. (TU Delft Bio-based Structures & Materials) Ravenshorst, G.J.P. (TU Delft Bio-based Structures & Materials) van de Kuilen, J.W.G. (TU Delft Bio-based Structures & Materials; Technische Universität München) Date 2021 Abstract In-plane behavior of timber diaphragms is usually characterized by means of an equivalent shear stiffness. However, this value depends on how the stiffness of the floors is evaluated from the experimental tests. Although an increasing number of research studies have provided a deeper insight into the seismic characterization of as-built and retrofitted timber diaphragms, the use of different standards or assumptions have led to inhomogeneous and not comparable results. With a focus on light, reversible, wood-based strengthening techniques applied to existing diaphragms, this study proposes a uniform and simple method based on the calculation of the secant stiffness of the floors at reference drifts. By means of this procedure, relevant research studies from the literature were compared, and homogeneous, indicative values of equivalent shear stiffness were proposed for each considered strengthening technique. These results can contribute to a more aware and reliable use, design, and linear modeling of wood-based retrofitting solutions for existing timber diaphragms. Subject In-plane stiffnessOSB panelsPlywood panelsReversible seismic strengtheningSeismic retrofittingTimber diaphragms To reference this document use: http://resolver.tudelft.nl/uuid:64ff125f-2a68-4a9a-a82a-08f87e41b154 DOI https://doi.org/10.1061/(ASCE)SC.1943-5576.0000602 ISSN 1084-0680 Source Practice Periodical on Structural Design and Construction, 26 (4) Part of collection Institutional Repository Document type journal article Rights © 2021 M. Mirra, G.J.P. Ravenshorst, J.W.G. van de Kuilen Files PDF Comparing_in_plane_stiffn ... floors.pdf 1.53 MB Close viewer /islandora/object/uuid:64ff125f-2a68-4a9a-a82a-08f87e41b154/datastream/OBJ/view