Contemporary and Novel Hold-Down Solutions for Mass Timber Shear Walls

Tannert, Thomas; Loss, Cristiano

doi:10.3390/buildings12020202

Cited by 19 publications

(6 citation statements)

References 41 publications

(44 reference statements)

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“…CLT panels are almost rigid under in-plane loading; therefore, ductility and energy dissipation in CLT shear walls must be achieved by the connections [24]. This occurs through rocking or sliding behavior.…”

Section: Clt Lateral Load Resisting Systemsmentioning

confidence: 99%

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Effects of Ground Motion Duration on the Seismic Performance of a Two-Storey Balloon-Type CLT Building

Jafari

Pan

Shahnewaz³

et al. 2022

Buildings

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The effects of long duration ground motions on the seismic performance of a newly constructed two-storey balloon-type cross-laminated timber (CLT) building located in Vancouver, Canada, was studied. A three-dimensional numerical model of the building was developed in OpenSees. The connection and shear wall models were validated with test data. Twenty-four pairs of long and short duration records with approximately the same amplitude, frequency content, and rate of energy build-up were used for nonlinear dynamic analyses. Fragility curves were developed based on the results of incremental dynamic analysis to assess the building’s collapse capacity. At design intensity level, ground motion duration was shown not to be a critical factor as the difference in inter-storey drift ratio between the two sets of records was negligible. However, due to the larger number of inelastic cycles, the long duration motions increased the median probability of collapse by 9% when compared with the short duration motions. Further research is required to evaluate the duration effects on taller and platform-type CLT buildings.

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Section: Clt Lateral Load Resisting Systemsmentioning

confidence: 99%

“…Hold-down (HDs) are designed to resist rocking and shear brackets are designed to resist sliding. Recent novel HD solutions include internalperforated steel plates, hyperelastic bearing pads, and high-strength HDs with self-tapping screws [24].…”

Section: Clt Lateral Load Resisting Systemsmentioning

confidence: 99%

Effects of Ground Motion Duration on the Seismic Performance of a Two-Storey Balloon-Type CLT Building

Jafari

Pan

Shahnewaz³

et al. 2022

Buildings

Self Cite

View full text Add to dashboard Cite

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“…Seismic analysis [10,15,21,[30][31][32]47, Connections design [31,98,106,127,129,131,137,149,150,153, Fire performance/fire design [12,14,143,157,163,164,173,176,[182][183][184][185][186][187][188][189][190][191][192][193][194][195][196][197][198][199] Behavior of shear walls, diaphragms, and timber-structural cores [63,71,123,147,149,166,175,[200]…”

Section: Sustainabilitymentioning

confidence: 99%

From Trees to Skyscrapers: Holistic Review of the Advances and Limitations of Multi-Storey Timber Buildings

et al. 2022

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Products derived from trees have been used by mankind for thousands of years, where timber has a long tradition as an ecological construction material. There is currently an increasing trend in multi-storey timber buildings, because of the projected growth in the demand for housing in urban areas between now and 2050, along with the urgent need for a more sustainable and productive construction industry. The construction of these buildings is now possible thanks to the new advances in architecture, engineering, and construction (AEC) and the new technological developments around timber construction. Its industrialization requirements imply a paradigm shift for the construction industry, which requires, among other aspects, the early and collaborative integration of stakeholders in its design and construction process. According to this, the objective of this review article is to determine the main advances and limitations related to the design and construction of multi-storey timber buildings, categorizing them in aspects such as sustainability, engineering and construction sciences, and collaborative design. The methodology of this article was based on the review of 266 articles published in Web of Science (WoS), as indexed scientific journals, between 2017 and mid-2022, performing a comparative and cooccurrence analysis of the contents. The results evidenced that 73% of the articles showed advances and limitations corresponding to the engineering and construction sciences category, 23% to sustainability, and the remaining 4% to collaborative design. The main advances in the development of multi-storey timber buildings are related to seismic analysis, connections design, fire performance, and fire design. While the main limitations are related to social sustainability, the results are not conclusive due to the low number of publications that support them.

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“…The prospect of building larger and taller timber buildings creates new structural design challenges due to wind and seismic actions, such as higher demands on HDs in CLT shear wall buildings: strength to resist loads, lateral stiffness to minimize deflections and damage, as well as deformation compatibility to accommodate the desired system rocking behaviour during an earthquake [2]. While in the proposal for the new Eurocode 8, the plastic deformations in HD connections are allowed [3], [4], the Canadian standard CSA 086 interprets HDs as nondissipative connections which shall be capacity protected by designing them to remain elastic under the force and displacement demands that are induced in them when the energy-dissipative connections reach the 95th percentile of their ultimate resistance [5].…”

Section: Introduction 567mentioning

confidence: 99%

Glued-in Rod CLT Connections With Flexible Polymer Adhesive

Azinović

Sebera

Kržan

et al. 2023

World Conference on Timber Engineering (WCTE 2023)

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This paper explores the possibility of using flexible adhesives for glued-in rods in cross laminated timber (CLT). In the first series of tests, a rod glued in a CLT panel with flexible adhesive was investigated for its mechanical resistance. The connection was tested in pull-pull configuration using monotonic and cyclic, tensile-only loading. Different glued-in lengths were tested, for which the rod diameter and glue-line thickness were constant. The tests have shown that the adhesive can resist large elastic deformations, while it does not exhibit large energy dissipation capacity. Based on the test results the numerical analyses were performed to study the behaviour of the connection where other parameters were considered. Existing constitutive models available in Ansys software were used to simulate the specific mechanical behaviour of the connection under monotonic loading. The results of the FE model exposed an optimal glueline thickness and glued-in length in relation to the engineering design parameters. The second series of tests were material emission tests, which were carried out in a Micro-Chamber (μ-CTE) with the intention to further explore the feasibility of such connections in terms of volatile organic compound (VOC) emissions.

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Contemporary and Novel Hold-Down Solutions for Mass Timber Shear Walls

Cited by 19 publications

References 41 publications

Effects of Ground Motion Duration on the Seismic Performance of a Two-Storey Balloon-Type CLT Building

Effects of Ground Motion Duration on the Seismic Performance of a Two-Storey Balloon-Type CLT Building

From Trees to Skyscrapers: Holistic Review of the Advances and Limitations of Multi-Storey Timber Buildings

Glued-in Rod CLT Connections With Flexible Polymer Adhesive

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