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    Mechanical Characterization of Connections for Modular Cross-Laminated Timber Construction Using Underutilized Lumber

    Source: Journal of Structural Engineering:;2024:;Volume ( 150 ):;issue: 002::page 04023221-1
    Author:
    Sujit Bhandari
    ,
    Erica C. Fischer
    ,
    Mariapaola Riggio
    ,
    Lech Muszynski
    ,
    Sina Jahedi
    DOI: 10.1061/JSENDH.STENG-12465
    Publisher: ASCE
    Abstract: This study was part of a larger project investigating the feasibility of using ponderosa pine (Pinus ponderosa, PP) harvested from forest restoration programs in the Northwestern United States for low-rise modular buildings. The panels have a standard width of 1.2 m to consider dimensions available from local manufacturers. To use these panels as walls or floors, they must be joined using in-plane connections. The stiffness and capacity of these connection systems under reversal lateral loading affect the behavior of the multipanel wall systems. Such multipanel systems are proposed for use in modular construction, with the goal of finding suitable market outlets for PP cross-laminated timber (CLT). In-plane connections within the multipanel system here play the role of the intramodular connection, while intermodular connections connect different multipanel systems to form a structure. Butt joints with 45° screws and a bolted point-type connection system were selected as intramodular and intermodular connections, respectively, due to their suitability for prefabrication and ease of installation. The aim of the study was to determine the mechanical characteristics of these two types of connections in PP CLT. Ten intramodular connections under monotonic and cyclic loading in shear and tension, and 12 intermodular connections in monotonic and cyclic in two different configurations were tested. The resulting force-displacement curves were used to extract the mechanical characteristics of the connections, which were then compared to the performance of the same type of connections in CLT panels made from other wood species. The intramodular connection showed high ductility in shear and low to medium ductility in tension, while the intermodular connection had lower initial stiffness compared to tests of commercial CLT in all tested directions except compression.
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      Mechanical Characterization of Connections for Modular Cross-Laminated Timber Construction Using Underutilized Lumber

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4296763
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    • Journal of Structural Engineering

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    contributor authorSujit Bhandari
    contributor authorErica C. Fischer
    contributor authorMariapaola Riggio
    contributor authorLech Muszynski
    contributor authorSina Jahedi
    date accessioned2024-04-27T22:29:09Z
    date available2024-04-27T22:29:09Z
    date issued2024/02/01
    identifier other10.1061-JSENDH.STENG-12465.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4296763
    description abstractThis study was part of a larger project investigating the feasibility of using ponderosa pine (Pinus ponderosa, PP) harvested from forest restoration programs in the Northwestern United States for low-rise modular buildings. The panels have a standard width of 1.2 m to consider dimensions available from local manufacturers. To use these panels as walls or floors, they must be joined using in-plane connections. The stiffness and capacity of these connection systems under reversal lateral loading affect the behavior of the multipanel wall systems. Such multipanel systems are proposed for use in modular construction, with the goal of finding suitable market outlets for PP cross-laminated timber (CLT). In-plane connections within the multipanel system here play the role of the intramodular connection, while intermodular connections connect different multipanel systems to form a structure. Butt joints with 45° screws and a bolted point-type connection system were selected as intramodular and intermodular connections, respectively, due to their suitability for prefabrication and ease of installation. The aim of the study was to determine the mechanical characteristics of these two types of connections in PP CLT. Ten intramodular connections under monotonic and cyclic loading in shear and tension, and 12 intermodular connections in monotonic and cyclic in two different configurations were tested. The resulting force-displacement curves were used to extract the mechanical characteristics of the connections, which were then compared to the performance of the same type of connections in CLT panels made from other wood species. The intramodular connection showed high ductility in shear and low to medium ductility in tension, while the intermodular connection had lower initial stiffness compared to tests of commercial CLT in all tested directions except compression.
    publisherASCE
    titleMechanical Characterization of Connections for Modular Cross-Laminated Timber Construction Using Underutilized Lumber
    typeJournal Article
    journal volume150
    journal issue2
    journal titleJournal of Structural Engineering
    identifier doi10.1061/JSENDH.STENG-12465
    journal fristpage04023221-1
    journal lastpage04023221-17
    page17
    treeJournal of Structural Engineering:;2024:;Volume ( 150 ):;issue: 002
    contenttypeFulltext
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