Performance of coupled CLT shear walls with internal perforated steel plates as vertical joints
https://www.sciencedirect.com/science/article/abs/... [Mechanical Performance] [Journal Article] 2022
Selamawit Dires, Thomas Tannert
Cross-laminated timber (CLT) constitutes a promising solution for numerous structural applications, including as shear walls in lateral load resisting systems. The research presented herein investigated the viability of internal-perforated-steel-plates with self-drilling dowels as high-performance connections for CLT shear walls. To achieve this objective, quasi-static monotonic and reversed cyclic tests at the material level (dowels and steel plates), the component level (shear connections and ...

Parametric Framework for Early Evaluation of Prescriptive Fire Design and Structural Feasibility in Tall Timber
https://ascelibrary.org/doi/full/10.1061/JAEIED.AE... [Tall Buildings] [Journal Article] 2023
Isabelle Hens, Ryan Solnosky, Nathan Brown
This paper describes a computational framework that performs automated structural design of tall timber buildings at the resolution of conceptual design while considering typical loads and load combinations, material properties, and a set of architectural requirements. The framework is used to assess a range of tall timber geometries in terms of feasibility for different fire design approaches and structural systems. Based on constructed precedents, two structural systems are considered: a post–...

Digital Twin for Monitoring In-Service Performance of Post-Tensioned Self-Centering CLT Shear Walls
https://ascelibrary.org/doi/pdf/10.1061%2F(ASCE)CP... [Mechanical Performance] [Journal Article] 2023
Ryan Longman, Yiye Xu, Qi Sun, Yelda Turkan, Mariapaola Riggio
A digital twin (DT) can be defined as a multiphysics, multiscale model in which a digital model, such as a building information model (BIM), is updated based on data obtained from a physical system, such as sensor data, results from probabilistic simulations, and material/structural models. This study describes sensor data integration within a BIM as the first critical step toward the implementation of DTs to support structural health monitoring (SHM). In particular, the study defines a methodol...

The History of Getting a Sustainable Tall Building Option—Mass Timber—Approved in the U.S. Building Codes
https://meridian.allenpress.com/fpj/article/72/4/2... [Standards/Building code] [Journal Article] 2022
Heather Stegner, Nikki Fotheringham
Simply substituting wood for conventional building materials could provide almost a tenth of the global carbon emission reductions needed to meet 2030 goals. However, while structural light-frame wood products are the go-to building material in the United States for low-rise residential construction, capturing over 90 percent of the market, any kind of wood-frame construction at the time under examination was limited to 5 stories and 85 feet in height. These story and height limitations dated ba...

A generalized method for numerical modeling of seismically resilient friction dampers using flat slider bearing element
https://www.sciencedirect.com/science/article/pii/... [Seismic Performance] [Journal Article] 2023
Arman Tatar, Alexander M. Baker, Daniel M. Dowden
There has been a growing interest in recent years by both researchers and industry in developing friction dampers that have enhanced seismic performance by using inclined friction interfaces (i.e., not colinear with the plane of loading) in combination with a re-centering mechanism such as steel disc springs and/or SMA materials. These friction and friction-hybrid dampers provide both energy dissipation and self-centering characteristics. Compared to conventional flat-slider friction dampers (wh...

Cross-Laminated Timber Concrete Composite Systems for Long-Span Floors
https://primo.lib.umn.edu/primo-explore/fulldispla... [Moisture/Durability] [Conference Paper] 2022
Shahnewaz, Md ; Jackson, Robert ; Tannert, Thomas; Soules, JG
Experimental investigations on full-scale (9.6 m) and half-scale (4.8 m) cross-laminated timber (CLT)-concrete-composite (TCC) slab bands are presented. The out-of-plane shear and ultimate flexural capacities of these TCC floors utilizing several types of shear connectors were determined. The TCC system was comprised of a 245 mm thick, 7-ply CLT with 150 mm concrete topping joined with shear connectors. The efficiency of three types of shear connectors: self-ta...

Study on in-plane compressive performance of cross-laminated bamboo and timber (CLBT) wall elements
https://link.springer.com/article/10.1007/s00107-0... [Mechanical Performance] [Journal Article] 2022
H Li, L Wang, BJ Wang, Y Wei
Cross-laminated bamboo and timber (CLBT), as a new kind of mass composite product, can efficiently use available regional resources for manufacturing. Although CLBTs have a wide range of application prospects in the construction field, the studies on the in-plane compressive performance have not yet been fully developed. This work investigated the in-plane compressive performance of CLBT specimens with compressive angles of 0, 45, and 90 deg. Experimental results showed that the compressive perf...

Investigation on the Composite Action of Various Connections in CLT-Glulam T-Sections
https://tspace.library.utoronto.ca/bitstream/1807/... [Connectors] [Thesis/Dissertation] 2022
Barry Qiu
In recent years, there has been much investigation into various timber products and ways to enhance structural behaviour. This research looks into investigating more efficient and compact sections, specifically by means of considering composite action in CLT-Glulam T-sections. Pine wood was selected to be studied for its material properties alongside a combination of four different mechanical and adhesive connections. By using these material and connection properties, a finite element model was ...

Bonding performance of cross-laminated timber-bamboo composites
https://www.sciencedirect.com/science/article/pii/... [Bonding/Adhesives] [Journal Article] 2022
W Dong, Z Wang, G Chen, Y Wang, Q Huang, M Gong
Bamboo is one of the most important renewable resources in China, leading to the development of bamboo products as well. Alternative applications of bamboo need to be developed in the field of construction, especially in cross-laminated timber (CLT) construction, due to better mechanical performance of bamboo and the increasing popularity of CLT construction in recent years. The bonding performance of cross-laminated timber-bamboo (CLTB) composites fabricated with Spruce-pine-fir (SPF) dimension...

Design of BioMonitor Model Toolbox
http://biomonitor.eu/wp-content/uploads/2022/10/D4... [Economics/Costs] [Report] 2021
Hans Verkerk, Ana Rosa Gonzalez-Martinez, Mariana Hassegawa, Marko Lovric, Myrna Van Leeuwen, Robert M'barek, Alexander Moiseyev, George Philippidis, Petra Salamon, Viktoriya Sturm, Alessandro Varaca, Willem-Jan Van Zeist
The design of the BioMonitor Model Toolbox ideally focuses only on improvements needed to strengthen the bioeconomy modelling capacity. However, the design could not be completely separated from other issues such as data availability. In many cases, available data series are short and incomplete (missing country data), which presumably reflect confidentiality issues, missing product codes, or simply that some bio-based products have not been long on the market yet. The design of the BioMonitor M...

Mechanical performance and failure characteristics of CLT manufactured from tropical hardwoods species
https://www.degruyter.com/document/doi/10.1515/psr... [Mechanical Performance] [Journal Article] 2022
Alia Syahirah Yusoh, Mohd Khairun Anwar Uyup, Paridah Md Tahir, Lee Seng Hua, Ong Chee Beng
The study on the mechanical properties of cross laminated timber (CLT) panels made from tropical hardwood species is essential in order to promote the use of CLT as buildings material in Malaysia. The objective of this study were to evaluate the mechanical performance and failure characteristics of CLT fabricated from tropical timbers species, namely, batai (Paraserianthes falcataria), sesendok (Endospermum malacensis), rubberwood (Hevea brasiliensis) and kedondong (family Burceraceae). The modu...

Land use change and carbon emissions of a transformation to timber cities
https://www.nature.com/articles/s41467-022-32244-w... [Environmental Performance] [Journal Article] 2022
Abhijeet Mishra, Florian Humpenöder, Galina Churkina, Christopher P. O. Reyer, Felicitas Beier, Benjamin Leon Bodirsky, Hans Joachim Schellnhuber, Hermann Lotze-Campen, Alexander Popp
Using engineered wood for construction has been discussed for climate change mitigation. It remains unclear where and in which way the additional demand for wooden construction material shall be fulfilled. Here we assess the global and regional impacts of increased demand for engineered wood on land use and associated CO2 emissions until 2100 using an open-source land system model. We show that if 90% of the new urban population would be housed in newly built urban mid-rise buildings with wooden...

Structural Fire Modeling Strategies for Exposed Mass Timber Compartments and Experimental Gaps for Model Validation
https://ascelibrary.org/doi/full/10.1061/%28ASCE%2... [Fire Performance] [Journal Article] 2022
E. Philion, B. Chorlton, J. Gales, P. Kotsovinos
Exposed mass timber is being increasingly used for tall hybrid structures due to its sustainability features, rapid construction time, and the aesthetic desire to see exposed timber. However, there are currently many knowledge gaps in timber’s performance in fire. Current prescriptive methods can be limiting, and designers are therefore required to develop alternative solutions to design tall and/or exposed timber structures. One approach that can be used to better evaluate timber’s performance ...

Computational design and on-site mobile robotic construction for CLT slab panels
https://www.sciencedirect.com/science/article/pii/... [Design/Architectural aspects] [Journal Article] 2022
H. Chai, H.J. Wagner, Z. Guo, Y. Qi, A. Menges, P.F. Yuan
Timber slabs design is currently limited to grid layouts derived from prefabricated rectangular panels. The lack of adaptability of timber slabs to accommodate multiple span directions makes it difficult to compete with reinforced concrete slabs constructed on site. This paper describes an adaptive slab system composed of thin Cross-Laminated Timber (CLT) panels and robot-fabricated beam networks for reinforcement. The beam network was developed through intricate negotiation of structural optimi...

Optimizing the Mid-Rise Building
https://etd.ohiolink.edu/apexprod/rws_etd/send_fil... [Design/Architectural aspects] [Thesis/Dissertation] 2022
Tyler C. Wilson
Construction methods have been rapidly changing in the past century, and in the past three decades, architects and engineers have developed new ways of constructing buildings utilizing timber. This new construction exercises the use of cross-laminated-timber (CLT) and mass timber construction methods that are stronger, more resistant to earthquakes and fire, quicker to construct, more sustainable, and greatly reduce carbon emissions. The studies of this paper were completed through an exploratio...

Experimental study on mechanical performance of shear connections in CLT-concrete composite floor
https://www.sciencedirect.com/science/article/pii/... [Connectors] [Journal Article] 2022
M. Wang, Q. Xu, K.A. Harries, L. Chen, Z. Wang, X. Chen
The results of a series of an experimental study and theoretical analyses of the shear performance of self-tapping screw connections in composite concrete-topped cross laminated timber floor systems are presented. Twenty-four specimens were prepared and tested in direct shear under monotonic loading conditions. The test variables included screw configuration, geometry and thread type. Endoscopy was used to investigate the observed failure modes at the CLT-concrete interfaces. Screws loaded in sh...

Numerical Simulation of Fire Spread in Multi-Story Cross Laminated Timber Buildings
https://researchbank.swinburne.edu.au/file/705b462... [Fire Performance] [Thesis/Dissertation] 2022
Suhaib Mohammad
The purpose of this work is to investigate the fire performance in a multistorey cross laminated timber (CLT) by the computational fluid dynamics (CFD) technique using the Fire Dynamics Simulator (FDS v.6.7). The importance of the research is to ensure that the fire performance of timber buildings is adequate for occupant safety and property protection. Moreover, the proposed technique provides safety measures in advance for the engineers for designing the fire safety buildings by predicting the...

Housing after Housing: Design strategies for resilient housing, focusing on adaptability concepts in modern architecture in wooden building
https://odr.chalmers.se/items/10eebc74-a7cf-4b29-8... [Design/Architectural aspects] [Thesis/Dissertation] 2022
Raquel Caldeira Azedo Afonso Domingues
This thesis demonstrates that implementing adaptability strategies can affect the spatial qualities of the dwelling and the social ...

https://www.proquest.com/intermediateredirectforez... [Markets] [other]

...

A Case Study on the Impact of Transportation of Mass Timber Products on the Cradle-to-Gate LCA Results for an Institutional Building
https://www.lidsen.com/journals/rpm/rpm-04-03-014... [Case Study/Projects] [Journal Article] 2022
C. Gu, H. Gu, M. Gong, J. Blackadar
Mass timber products (MTPs) are being adopted in new building constructions and remodels in the last three decades, credited to their renewable and low carbon footprint characteristics. However, there are no mass timber manufacturers currently existing in Atlantic Canada. Extended distances of transporting MTPs to this region from other Canadian provinces may sacrifice the environmental benefits of using MTPs. This study was aimed to understand, via conducting a cradle-to-gate life cycle assessm...