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7 records – page 1 of 1.

Cyclic Response of Insulated Steel Angle Brackets Used for Cross-Laminated Timber Connections

https://research.thinkwood.com/en/permalink/catalogue2765
Year of Publication
2021
Topic
Seismic
Acoustics and Vibration
Connections
Material
CLT (Cross-Laminated Timber)
Application
Walls
Floors
Author
Kržan, Meta
Azinovic, Boris
Publisher
Springer
Year of Publication
2021
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Walls
Floors
Topic
Seismic
Acoustics and Vibration
Connections
Keywords
Angle Bracket
Sound Insulation
Insulation
Monotonic Test
Cyclic Tests
Wall-to-Floor
Stiffness
Load Bearing Capacity
Shear
Tensile
Language
English
Research Status
Complete
Series
European Journal of Wood and Wood Products
Summary
In cross-laminated timber (CLT) buildings, in order to reduce the disturbing transmission of sound over the flanking parts, special insulation layers are used between the CLT walls and slabs, together with insulated angle-bracket connections. However, the influence of such CLT connections and insulation layers on the seismic resistance of CLT structures has not yet been studied. In this paper, experimental investigation on CLT panels installed on insulation bedding and fastened to the CLT floor using an innovative, insulated, steel angle bracket, are presented. The novelty of the investigated angle-bracket connection is, in addition to the sound insulation, its resistance to both shear as well as uplift forces as it is intended to be used instead of traditional angle brackets and hold-down connections to simplify the construction. Therefore, monotonic and cyclic tests on the CLT wall-to-floor connections were performed in shear and tensile/compressive load direction. Specimens with and without insulation under the angle bracket and between the CLT panels were studied and compared. Tests of insulated specimens have proved that the insulation has a marginal influence on the load-bearing capacity; however, it significantly influences the stiffness characteristics. In general, the experiments have shown that the connection could also be used for seismic resistant CLT structures, although some minor improvements should be made.
Online Access
Free
Resource Link
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Mechanical Experimental Study on Tensile Bolted Connections of Crosslaminated Timber

https://research.thinkwood.com/en/permalink/catalogue2450
Year of Publication
2020
Topic
Connections
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Walls
Floors
Author
Su, Chenxiao
Xiong, Haibei
Publisher
Tech Science Press
Year of Publication
2020
Country of Publication
United States
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Walls
Floors
Topic
Connections
Mechanical Properties
Keywords
Monotonic Loading
Cyclic Loading
Deformation
Failure Modes
Wall-to-Wall
Wall-to-Floor
Bolted Connection
Load-Slip
Bearing Capacity
Yielding Point
Stiffness
Ductility
Language
English
Research Status
Complete
Series
Structural Durability & Health Monitoring
Online Access
Free
Resource Link
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Elevated Temperature Effects on the Shear Performance of a Cross-Laminated Timber (CLT) Wall-to-Floor Bracket Connection

https://research.thinkwood.com/en/permalink/catalogue2106
Year of Publication
2019
Topic
Fire
Connections
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Walls
Floors

Hysteretic Behaviour of Metal Connectors for Hybrid (High- and Low-Grade Mixed Species) Cross Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue1659
Year of Publication
2016
Topic
Mechanical Properties
Connections
Material
CLT (Cross-Laminated Timber)
Application
Walls
Floors
Author
Mahdavifar, Vahid
Barbosa, André
Sinha, Arijit
Muszynski, Lech
Gupta, Rakesh
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Walls
Floors
Topic
Mechanical Properties
Connections
Keywords
Cyclic Loading
Wall-to-Floor
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 3591-3598
Summary
Cross-laminated timber (CLT) is a prefabricated solid engineered wood product made of at least three orthogonally bonded layers of solid-sawn lumber that are laminated by gluing longitudinal and transverse layers with structural adhesives to form a solid panel. Previous studies have shown that the CLT buildings can perform well in seismic loading and are recognized as the essential role of connector performance in structural design, modelling, and analysis of CLT buildings. When CLT is composed of high-grade/high-density layers for the outer lamellas and low-grade/lowdensity for the core of the panels, the CLT panels are herein designated as hybrid CLT panels as opposed to conventional CLT panels that are built using one lumber type for both outer and core lamellas. This paper presents results of a testing program developed to estimate the cyclic performance of CLT connectors applied on hybrid CLT layups. Two connectors are selected, which can be used in wall-to-floor connections. These are readily available in the North American market. Characterization of the performance of connectors is done in two perpendicular directions under a modified CUREE cyclic loading protocol. Depending on the mode of failure, in some cases, testing results indicate that when the nails or screws penetrate the low-grade/low-density core lumber, a statistically significant difference is obtained between hybrid and conventional layups. However, in other cases, due to damage in the face layer or in the connection, force-displacement results for conventional and hybrid CLT layups were not statistically significant.
Online Access
Free
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Structural Redundancy in Cross Laminated Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue1785
Year of Publication
2016
Topic
Connections
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Shear Walls
Author
Lukacs, Ildiko
Björnfot, Anders
Tsalkatidis, Themistoklis
Tomasi, Roberto
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Shear Walls
Topic
Connections
Mechanical Properties
Keywords
Wall-to-Floor
Stiffness
Finite Element Model
Horizontal Loads
Vertical Loads
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 5811-5818
Summary
In high timber structures, cross-laminated timber panels are common structural elements. The wall and floor panels are typically connected with steel plates, angle brackets, hold-downs, and screws. Based on analytical research, it seems that panel-to-panel connections give additional stiffness due to structural redundancies resulting from...
Online Access
Free
Resource Link
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Cross-Laminated Timber Fasteners Solutions for Tall Wood Buildings

https://research.thinkwood.com/en/permalink/catalogue2197
Topic
Seismic
Connections
Material
CLT (Cross-Laminated Timber)
Application
Floors
Shear Walls
Walls
Organization
TallWood Design Institute
Country of Publication
United States
Material
CLT (Cross-Laminated Timber)
Application
Floors
Shear Walls
Walls
Topic
Seismic
Connections
Keywords
Wall-to-Floor
Wall-to-Wall
Wall-to-Foundation
Strength Properties
Screw Connectors
Research Status
In Progress
Notes
Project contact is Arijit Sinha at Oregon State University
Summary
Constructing buildings with CLT requires development of novel panel attachment methods and mechanisms. Architects and engineers need to know the engineering strength properties of connected panels, especially in an earthquake prone area. This project will improve knowledge of three types of wall panel connections: wall-to-floor, wall-to-wall, and wall-to-foundation. Testing will determine the strength properties of metal connectors applied with diffferent types and sizes of screw fasteners. The data will be used to develop a modeling tool that engineers can use when designing multi-story buildings to be constructed with CLT panels.
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7 records – page 1 of 1.