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Experimental Study on Loading Capacity of Glued-Laminated Timber Arches Subjected to Vertical Concentrated Loads

https://research.thinkwood.com/en/permalink/catalogue2581
Year of Publication
2020
Topic
Design and Systems
Material
Glulam (Glue-Laminated Timber)
Application
Arches
Author
Zhou, Jiale
Chuanxi, Li
Ke, Lu
He, Jun
Wang, Zhifeng
Publisher
Hindawi
Year of Publication
2020
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Application
Arches
Topic
Design and Systems
Keywords
In-Plane Loading
Capacity
Douglas-Fir
Model
Failure Modes
Language
English
Research Status
Complete
Series
Advances in Civil Engineering
Summary
Glued-laminated timber arches are widely used in gymnasiums, bridges, and roof trusses. However, studies on their mechanical behaviours and design methods are still insufficient. This paper investigates the in-plane loading capacity of circular glued-laminated timber arches made of Douglas fir. Experiments were conducted on four timber-arch models with different rise-to-span ratios under concentrated loads at mid-span and quarter-point locations. The structural responses, failure modes, and loading capacity of the timber arch specimens were obtained. The results show that the timber arches presented symmetric and antisymmetric deformation under mid-point and quarter-point loading conditions, respectively. The downward shifting of the neutral axis of the cross section was observed under mid-point loading condition, which contributes to higher loading capacity compared to that under quarter-point loading condition. The loading condition significantly affects the ultimate loads and the strain distribution in the cross section. Based on the design formula in current standards for timber structures, an equivalent beam-column method was introduced to estimate the loading capacity of the laminated timber arches under vertical concentrated loads. The moment amplification factor in the formula was compared and discussed, and the value provided in the National Design Specification for Wood Construction was recommended with acceptable accuracy.
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Flexural Performance of Novel Nail-Cross-Laminated Timber Composite Panels

https://research.thinkwood.com/en/permalink/catalogue2649
Year of Publication
2020
Topic
Mechanical Properties
Design and Systems
Material
CLT (Cross-Laminated Timber)
Author
Zhang, Yannian
Nehdi, Moncef
Gao, Xiaohan
Zhang, Lei
Publisher
MDPI
Year of Publication
2020
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Topic
Mechanical Properties
Design and Systems
Keywords
Panels
Flexural Performance
Nails
Bending
Model
Prediction
Fracture
Language
English
Research Status
Complete
Series
Applied Sciences
Summary
Cross-laminated timber (CLT) is an innovative wood panel composite that has been attracting growing interest worldwide. Apart from its economic benefits, CLT takes full advantage of both the tensile strength parallel to the wood grain and its compressive strength perpendicular to the grain, which enhances the load bearing capacity of the composite. However, traditional CLT panels are made with glue, which can expire and lose effectiveness over time, compromising the CLT panel mechanical strength. To mitigate such shortcomings of conventional CLT panels, we pioneer herein nail-cross-laminated timber (NCLT) panels with more reliable connection system. This study investigates the flexural performance of NCLT panels made with different types of nails and explores the effects of key design parameters including the nail incidence angle, nail type, total number of nails, and number of layers. Results show that NCLT panels have better flexural performance than traditional CLT panels. The failure mode of NCLT panels depends on the nail angle, nail type, and quantity of nails. A modified formula for predicting the flexural bearing capacity of NCLT panels was proposed and proven accurate. The findings could blaze the trail for potential applications of NCLT panels as a sustainable and resilient construction composite for lightweight structures.
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Connection and Performance of Two-Way CLT Plates Phase II

https://research.thinkwood.com/en/permalink/catalogue2086
Year of Publication
2019
Topic
Mechanical Properties
Connections
Material
CLT (Cross-Laminated Timber)
PSL (Parallel Strand Lumber)
LVL (Laminated Veneer Lumber)
Author
Zhang, Chao
Asselstine, Julian
Lee, George
Lam, Frank
Organization
University of British Columbia
Year of Publication
2019
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
PSL (Parallel Strand Lumber)
LVL (Laminated Veneer Lumber)
Topic
Mechanical Properties
Connections
Keywords
Deflection
Two-Way
Bending
Finite Element Method
Model
Language
English
Research Status
Complete
Summary
In Phase I of Developing Large Span Two Way CLT Floor System (2017-18) we studied the performance of a steel plate connection system for the minor direction of CLT plates. The connected specimens had higher stiffness and strength compared to intact members under bending. In Phase II (2018-19) we designed and tested another connector based on...
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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

A Scheduling Model for Industrial Process Management: An Innovative Application of Cross-Laminated Timber (CLT) Manufacturing

https://research.thinkwood.com/en/permalink/catalogue2109
Year of Publication
2019
Topic
General Information
Material
CLT (Cross-Laminated Timber)
Author
de Araujo Carneiro, Bruno
Organization
University of British Columbia
Year of Publication
2019
Country of Publication
Canada
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Topic
General Information
Keywords
Production
Model
Language
English
Research Status
Complete
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Free
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Simple Cross-Laminated Timber Shear Connections with Spatially Arranged Screws

https://research.thinkwood.com/en/permalink/catalogue1716
Year of Publication
2018
Topic
Connections
Mechanical Properties
Design and Systems
Material
CLT (Cross-Laminated Timber)

Building Information Modeling (BIM) and Design for Manufacturing and Assembly (DfMA) for Mass Timber Construction

https://research.thinkwood.com/en/permalink/catalogue1921
Year of Publication
2018
Topic
Design and Systems
Application
Wood Building Systems
Author
Staub-French, Sheryl
Poirier, Erik
Calderon, Francisco
Chikhi, Imen
Zadeh, Puyan
Chudasma, Divyarajsinh
Huang, Shitian
Publisher
BIM TOPiCS Research Lab
Year of Publication
2018
Country of Publication
Canada
Format
Report
Application
Wood Building Systems
Topic
Design and Systems
Keywords
Model
Building Information Modeling
Design for Manufacturing and Assembly
Construction
BIM
DfMA
Language
English
Research Status
Complete
Summary
The increasing appetite for innovation, performance and sustainability in the Canadian Architecture, Engineering, Construction, Owners and Operators (AECOO) community is leading to the development and deployment of approaches, be they tools, technologies, practices, etc., that are causing a significant shift in the delivery and management of built assets. When deployed...
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Prototype Mass Timber Office Building Models: Material Quantities and Preliminary Life Cycle Assessment: Internal Report

https://research.thinkwood.com/en/permalink/catalogue2547
Year of Publication
2018
Topic
Design and Systems
Environmental Impact
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Author
Ganguly, Indroneil
Eastin, Ivan
Simonen, Kathrina
Year of Publication
2018
Country of Publication
United States
Format
Report
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Topic
Design and Systems
Environmental Impact
Keywords
Mid-Rise
Mass Timber
Prototype
Model
LCA
Life-Cycle Assessment
Language
English
Research Status
Complete
Summary
The goal of this work was to develop material quantity estimates of a typical mid-rise office building in the Pacific Northwest and to deliver the results to the Forestry Research Team in the University of Washington (UW) College of the Environment School of Environmental and Forest Sciences. The Forestry Research Team will then use these results to develop regionally specific life cycle inventory data to support the greater study funded by the 2015 McIntire-Stennis Research Grant, which is “to assist small and medium-sized wood products companies and Native American tribal enterprises to understand and adapt to changing market conditions” (http://depts.washington.edu/sefsifr/2015-mcintire-stennis-grantwinners/).
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Glulam Timber Bridges for Local Roads

https://research.thinkwood.com/en/permalink/catalogue2131
Year of Publication
2017
Topic
Design and Systems
Material
Glulam (Glue-Laminated Timber)
Application
Bridges and Spans
Author
Carnahan, Zachary
Publisher
South Dakota State University
Year of Publication
2017
Country of Publication
United States
Format
Thesis
Material
Glulam (Glue-Laminated Timber)
Application
Bridges and Spans
Topic
Design and Systems
Keywords
Bridge Decks
Performance Based Design
Model
Full-Scale Glulam Girder Bridge Test
Language
English
Research Status
Complete
Online Access
Free
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Structural Fire Design of Tall Timber Buildings Using Cross Laminated Timber (CLT) to Eurocodes

https://research.thinkwood.com/en/permalink/catalogue1779
Year of Publication
2016
Topic
Design and Systems
Fire
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Zhang, Binsheng
Zhao, Xuan
Sandersaon, Iain
Kilpatrick, Tony
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Design and Systems
Fire
Keywords
Fire Safety
Model
Numerical Simulation
Eurocode
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 5445-5454
Summary
The development and renaissance of modern engineered products, advanced connections and modern construction technology have made it viable to design and construct multi-storey timber buildings. However, a number of issues need to be raised urgently, in particular fire safety and secondary structural effects. This research aims to...
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10 records – page 1 of 1.