Mechanical Behaviour of Dovetail Connections for Cross Laminated Timber Wall Elements
https://www.uibk.ac.at/holzbau/aktuelles/aktuelles... [Mechanical Performance] [Conference Paper] 2014
Georg Stecher, Josef Kogl, Wilfried Beikircher
The goal of this study is to determine the shear and tension resistance capacity of a tenon connector made out of beech plywood for the connection of cross laminated timber wall elements. To determine the tensile and shear capacity of the connector according to EN 26 891 [1], tensile and shear tests were performed on cross laminated timber elements with thicknesses of 100 mm, 150mm and 180 mm which were connected with the pin connector. The sample set consisted of 36 test specimens of which were...

Lateral Behavior of Post-Tensioned Cross Laminated Timber Walls Using Finite Element Analysis
https://repository.tudelft.nl/islandora/object/uui... [Mechanical Performance] [Conference Paper] 2014
Zhouyan Xia, Jan Willem van de Kuilen
Cross laminated timber (CLT) has been rapidly developed and utilized for multi-rise constructions in recent years, even high-rise CLT buildings with 40 stories have been proposed and designed. A use of unbonded post-tensioning (PT) steel bars through over CLT walls of the high-rise CLT buildings to take up the tensile forces produced by wind load has been considered, following the regulations of unbonded post-tensioned (UPT) concrete walls. This paper introduces a finite element model to simulat...

Stub Girder Flooding System for Timber Construction
http://schd.ws/hosted_files/wcte2014/69/ABS655_Mas... [Design/Architectural aspects] [Conference Paper] 2014
Reza Masoudnia, Pierre Quenneville
This article presents the concept of the stub girder flooring system adapted to timber structures. The floor system consists of LVL beams covered by CLT floor panel separated by a series of short shear connection called stubs. The paper focusses on the analytical development to predict the optimized flooring system dimensions for future experimental tests. The proposed model contains structural parameters such as the main girder and secondary Gerber beam, the stubs and the CLT panel with various...

Non-Linear Modelling of the Three and Seven Storey X-Lam Buildings Tested Within the Sofie Project
http://schd.ws/hosted_files/wcte2014/e1/ABS076_Fra... [Seismic Performance] [Conference Paper] 2014
Giovanni Rinaldin, Guilaume Herve Pho’sie, Massimo Fragiacomo, Claudio Amadio, Francesco Pontarin
The seismic behaviour of the three- and seven-storey cross-laminated (Xlam) buildings tested on the shaking table within the SOFIE project is analysed in this paper using advanced FE simulations. Two numerical models are developed with a component approach where all the wooden parts are considered as elastic and the connectors are modelled with elasto-plastic springs with a predefined tri-linear hysteretic behaviour implemented as an external user subroutine in widespread software packages such ...

Time-Dependent Behaviour of CLT
http://schd.ws/hosted_files/wcte2014/a3/ABS486_Pir... [Mechanical Performance] [Conference Paper] 2014
Cirprian Pirvu, Erol Karacabeyli
Creep tests were carried out on nine cross-laminated timber (CLT) billets to assess time-dependent behaviour of CLT made with Canadian lumber. This paper describes the layup of the CLT billets, test methods (i.e. non-destructive and destructive) that were used to assess their behaviour when loaded in bending, and summarizes the results. The objective of the study is to develop technical information to support proposals for code implementation....

Progress on the Development of Seismic Resilient Tall CLT Buildings in the Pacific Northwest
https://www.fpl.fs.fed.us/documnts/pdf2014/fpl_201... [Seismic Performance] [Conference Paper] 2014
Shiling Pei, Jeffery Berman, Daniel Dolan, John van De Lindt, James Ricles, Richard Sause, Hans-Erik Blomgren, Marjan Popovski, Douglas Rammer
As urban densification occurs in U.S. regions of high seismicity, there is a natural demand for seismically resilient tall buildings that are reliable, economically viable, and can be rapidly constructed. In urban regions on the west coast of the U.S., specifically the Pacific Northwest, there is significant interest in utilizing CLT in 8-20 story residential and commercial buildings due to its appeal as a potential locally sourced, sustainable and economically competitive building material. In ...

Evaluation of Adhesive Bond Strength of Two-Layer Asymmetric Cross-Laminated LSL Specimens
http://repositum.tuwien.ac.at/obvutwoa/content/pag... [Bonding/Adhesives] [Conference Paper] 2016
Meng Gong, Y.H. Chui, Ling Li
Massive timber panels (MTPs) has shown a great potential in construction of tall buildings. Evaluation of the face-bond strength of MTPs is of an interest to use of this kind of products. This study was aimed at developing an appropriate test procedure for evaluating the adhesive bond strength of cross-laminated laminated strand lumber (LSL). Short span bending tests were conducted on two-layer asymmetric cross-laminated LSL specimens, which were adhesively bonded using two-component polyurethan...

Recent Attempts on Timber Structures in Japan
http://repositum.tuwien.ac.at/obvutwoa/content/pag... [Markets] [Conference Paper] 2016
Kaori Fujita, Mikio Koshihara
This paper attempts to introduce the recent situation of timber structures and timber architecture in Japan. Examples of fire resistant timber structures, light frame construction, new application to public buildings and Cross Laminated Timber structures are introduced and discussed....

Québec allowing lumber use for 12-storey buildings
http://www.constructioncanada.net/quebec-allowing-... [Tall Buildings] [Magazine/Newspaper Article] 2015
Construction Canada
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Tall timber buildings: Applications of solid timber construction in multi-storey buildings
http://global.ctbuh.org/resources/papers/download/... [Tall Buildings] [Journal Article] 2011
M. Wells
Timber construction offers the possibility of minimal cost and no carbon footprint combined. Cross-wall high-rise structures - residential buildings in particular - have relatively low stresses in their structural components. Walls and floors that are dimensioned to provide adequate acoustic separation and thermal performance have plenty of substance to resist the levels of applied loading encountered. This paper describes the design of construction of a nine story cross-laminated timber apartme...

Japanese architect to build worlds tallest hybrid timber building in Coal Harbour
http://dailyhive.com/vancouver/1255-west-pender-sh... [Tall Buildings] [Magazine/Newspaper Article] 2016
Kenneth Chan
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Self-extinguishment of cross-Laminated timber
http://repository.tudelft.nl/view/ir/uuid:c7e7ade5... [Fire Performance] [Thesis/Dissertation] 2015
R. Crielaard
Cross-laminated timber, or CLT, is currently receiving attention for its potential use in tall building structures. Timber being a combustible material, one of the main challenges for the construction of these buildings is the potential fire risk that results from its use in the structure. For tall buildings, there is an increased severity of the consequences of structural failure as result of a fire. In order to obtain the desired level of safety, building codes typically require tall buildings...

Hysteresis behavior of bracket connection in cross-laminated-timber shear walls
http://www.sciencedirect.com/science/article/pii/S... [Connectors] [Journal Article] 2013
Yin-Lan Shen, Johannes Schneider, Solomon Tesfamariam, Siegfried F. Stiemer, Zai-Gen Mu
Cross Laminated Timber (CLT), a new generation of engineered wood-based products, provides promising solutions to the mid- and high-rise wood building. A series of connection tests and CLT shear walls tests subjected to general quasi-static monotonic and cyclic loading protocols have been undertaken at FPInnovations of Canada to gain comprehensive understanding of its structural properties. Using these testing results, two hysteretic models (Saws model and Pinching4 model) in OpenSees are calibr...

PLP Architecture proposes Londons first wooden skyscraper at the Barbican
http://www.dezeen.com/2016/04/08/plp-architecture-... [Tall Buildings] [Magazine/Newspaper Article] 2016
Jessica Mairs
PLP Architecture and researchers from the University of Cambridge have revealed a concept for Londons first wooden skyscraper – a 300-metre-tall addition to the Barbican housing estate. PLP Architecture and Cambridge Universitys Department of Architecture developed the proposal with engineer Smith and Wallwork to offer an alternative to traditional steel and concrete construction. The use of timber as a structural material in tall buildings is an area of emerging interest for its variety of pot...

Focus Solid Timber Solutions - European Conference on Cross Laminated Timber
https://www.holzbauforschung.at/fileadmin/user_upl... [General Information] [Book/Book Section] 2013
Richard Harris, Andreas Ringhofer, Gerhard Schickhofer
Timber and wood-based engineered products are becoming very important as structural materials, especially in the drive towards sustainable technologies and construction. For structural wooden products, it is very important to improve their properties to be more competitive and reliable as a sustainable low-carbon material and a major contributor to affordable buildings. This applies particularly to larger, more complicated structures where timber is becoming a realistic alternative....

Hybrid Beech and Spruce Cross-Laminated Timber
https://www.researchgate.net/publication/307629972... [Raw Materials] [Conference Paper] 2016
Simon Aicher, Maren Hirsch, Zachary Christian
A hybrid, three-layered, softwood-hardwood cross-laminated timber build-up with outer layers of European spruce (Picea abies) and a center cross-layer of European beech (Fagus sylvatica) has been investigated with regard to out-of-plane bending. The determination of the rolling shear properties of the beech cross-layer performed by different test and measurement methods comprising bending and compression shear tests was of primary interest. The shear capacity of the composite is significantly in...

A project contribution to the development of sustainable multi-storey timber buildings
http://www.irbnet.de/daten/iconda/CIB_DC26366.pdf... [Tall Buildings] [Conference Paper] 2013
Catarina V. Silva, Jorge M. Branco, Paulo B. Lourenço
Wood is a natural material, renewable, easily recyclable, and able to store carbondioxide, which makes tall timber buildings a solution with potential to answer the main sustainability targets. Cross laminated timber (CLT) has been pointed out as the best wood-based material to make this ambition a real thing. In order to understand why, this paper introduces the material and describe some demonstration buildings recently built. Based on diagnosed weaknesses of CLT buildings, it is presented an ...

Experimental Investigation of Tensile Strength and Stiffness Indicators Regarding European Beech Timber
https://www.researchgate.net/publication/306915201... [Raw Materials] [Conference Paper] 2016
Thomas Ehrhart, Gerhard Fink, René Steiger, Andrea Frangi
In the present paper, several visual and physical strength and stiffness related indicators are investigated concerning their influence on the tensile strength and stiffness of European beech timber boards. Besides well-known visual characteristics, such as knots and bark inclusions, further ones are analysed. Destructive tensile tests on 150 timber boards were performed in order to determine the actual tensile strength and the static modulus of elasticity. By means of correlation analysis, the ...

Form Exploration of Folded Plate Timber Structures based on Performance Criteria
https://www.researchgate.net/publication/257859930... [Design/Architectural aspects] [Conference Paper] 2011
Andreas Falk, Peter Von Buelow
This paper presents an explorative study on applications of cross-laminated timber (CLT) elements in shell structures. Previous studies of plate tensegrity, folded plate roofs interacting with stabilising steel-based systems and studies inspired by origami show a widening range of possibilities to develop timber-based shells. Steadily rising interest in rationality during pre-fabrication, transport and on-site construction in contemporary industrialised production increases the competitiveness o...

Which Seismic Behaviour Factor for Multi-Storey Buildings made of Cross-Laminated Wooden Panels?
http://www.dedalegno.com/home_eng.html... [Seismic Performance] [Conference Paper] 2006
2018
DedaLENGO is a structural engineering company that focuses exclusively on the design and research of timber structures at an international level....