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Cross Laminated Timber under Concentrated Compression Loads - Methods of Reinforcement

https://research.thinkwood.com/en/permalink/catalogue2932
Year of Publication
2021
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Maurer, Bernhard
Maderebner, Roland
Organization
University of Innsbruck
Publisher
Elsevier
Year of Publication
2021
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Mechanical Properties
Keywords
Multi-storey Buildings
Point-supported Flat Slabs
Reinforcement
System Connector
SPIDER Connector
Punching Test
Research Status
Complete
Series
Engineering Structures
Summary
Point-supported flat slabs made of cross laminated timber (CLT) for multi-storey buildings pose various challenges to structural timber design. One aspect are concentrated compressive loads, which cause stress concentrations in the form of shear and compression perpendicular to the grain at the point supports. The present work deals with this problem and shows a method, how the support area can be reinforced with a system connector. After a specification of the connector, the functionality of this construction element is described on the basis of experimental, numerical and analytical studies for a symmetrical loading. The interaction of the connector with the (CLT) is presented with an anlaytical model and numerical simulations, and evaluated with mechanical tests.
Online Access
Free
Resource Link
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Preliminary Design Proposals for Dovetail Wood Board Elements in Multi-Story Building Construction

https://research.thinkwood.com/en/permalink/catalogue2969
Year of Publication
2021
Topic
Market and Adoption
Application
Wood Building Systems
Author
Ilgin, Hüseyin Emre
Karjalainen, Markku
Organization
Tampere University
Editor
Zona, Alessandro
Publisher
MDPI
Year of Publication
2021
Format
Journal Article
Application
Wood Building Systems
Topic
Market and Adoption
Keywords
Dovetail Wood Board Elements
Multi-storey Buildings
Sustainability
Research Status
Complete
Series
Architecture
Summary
Adhesives and metal fasteners play important roles in the composition and connections of engineered wood products (EWPs) such as cross-laminated timber and glue-laminated timber in the building construction industry. However, due to their petroleum-based nature, adhesives can cause toxic gas emissions, while metal fasteners compromise the end-of-life disposal and reusability of EWPs. These issues adversely affect the sustainable material properties of EWPs. Numerous studies have been conducted in the literature on the technological, ecological, social, and economic aspects of EWPs in construction with different construction solutions, but no studies have been conducted to evaluate the technical performance of dovetail wood board elements (DWBE) in multi-story or tall building construction. This study focuses on adhesive- and metal fastener-free DWBE as sustainable material alternatives for ecologically sensitive engineering solutions. Various preliminary design proposals are presented for DWBE using architectural modeling programs as an environmentally friendly approach intended for use in the timber construction industry. The research findings are based on a theoretical approach that has not yet been practically tested but is proposed considering existing construction practices that need further investigation, including technical performance tests. It is believed that this paper will contribute to the promotion and diffusion of DWBE for more diverse and innovative architectural and structural applications, particularly in multi-story timber building construction, as one of the key tools in tackling climate change challenges.
Online Access
Free
Resource Link
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