A methodology to determine the seismic low-cycle fatigue strength of timber connections

Casagrande, Daniele; Bezzi, Stefano; D’Arenzo, Giuseppe; Schwendner, Sascha; Polastri, Andrea; Seim, Werner; Piazza, Maurizio

doi:10.1016/j.conbuildmat.2019.117026

Cited by 22 publications

(6 citation statements)

References 26 publications

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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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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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“…The value of the yield slip defined accordingly, V y,EEEP,m , used for cyclic testing in this campaign is 3 mm for both wood species. Hence the displacement rates on the new draft are yet to be specified, the rates within this campaign were set with reference to Casagrande et al (2020), who have studied the interaction between the strength degradation and the ductility capacity for dowel-type type joints through testing multiple cyclic protocols, employing different displacement rates. The study has provided that by increasing the number of steps, higher accuracy in the results can be achieved.…”

Section: Cyclic Testsmentioning

confidence: 99%

Reinforcement of Dowel-Type Timber Joints with Self-tapping Screws

Branco

Elbashir

2021

Lecture Notes in Civil Engineering

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An experimental campaign was carried out for dowel type joints made of two wood species, Maritime Pine (Pinus pinaster) and Scot's Pine (Pinus sylvestris). Monotonic (EN 26891) and cyclic (EN 12512) tests were performed on the joints, with and without reinforcement, and the effect of the reinforcement in the overall capacity of the joint is presented and analyzed. The effectiveness of the reinforcement was found to be linked directly to the slenderness of the dowel, which has proven to have an essential role in determining the failure mode of the joints. Reinforcement in general have projected different effects by means of the joints' load-carrying capacity, ductility and strength degradation, depending on many factors, such as the different densities and mechanical properties of each of the wood species, as well as the different loading procedures, as the effect was more evident with cyclic tests.

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“…(i) two ductility classes, namely -DC2 -(classifiable as moderate dissipative class) and -DC3 -(classifiable as high dissipative class), have been assigned to CLT structures in case of a dissipative structural behaviour 4 ; (ii) specific analytical expressions for the applicability of the capacity-based design both at local-and building-level have been drafted 8 ; (iii) a revised procedure for the determination of the ductility capacity of dissipative connections subjected to cyclic loads has been included 9,10 ; (iv) new values for the ductility demand of dissipative connections have been proposed. 4,8 Firstly, the verification of the behaviour factor q was performed by means of parametric non-linear static (pushover) analyses according to the revised procedure drafted in the "material independent" section of the new Eurocode 8.…”

Section: Introductionmentioning

confidence: 99%

“…With the aim to verify if the selected values of the behaviour factors q are consistent with the attained seismic performances of CLT buildings designed in accordance with the new “timber chapter” of Eurocode 8, a novel study for the evaluation of the behaviour factor q is presented in this paper. Unlike from the previous studies, the calculation of the behaviour factor q for CLT buildings has been conducted by selecting archetypes designed according to the provisions drafted in the new Eurocode 8 and, more specifically, taking into account that: two ductility classes, namely – DC2 – (classifiable as moderate dissipative class) and – DC3 – (classifiable as high dissipative class), have been assigned to CLT structures in case of a dissipative structural behaviour 4 ; specific analytical expressions for the applicability of the capacity‐based design both at local‐ and building‐level have been drafted 8 ; a revised procedure for the determination of the ductility capacity of dissipative connections subjected to cyclic loads has been included 9,10 ; new values for the ductility demand of dissipative connections have been proposed 4,8 …”

Section: Introductionmentioning

confidence: 99%

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Verification of the behaviour factors proposed in the second generation of Eurocode 8 for cross‐laminated timber buildings

Rinaldi

Casagrande

Fragiacomo

2022

Earthq Engng Struct Dyn

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After 20 years since the publication of the Eurocodes, in 2012, the European Commission gave mandate to the European Committee for Standardization (CEN) to develop a second generation of Eurocodes. Among the different parts of Eurocodes, a substantial revision process has been undertaken for the seismic design rules of timber buildings included in Eurocode 8 (EC8). In particular, a major effort has been made to implement the design rules for Cross‐Laminated Timber (CLT) buildings and to define the behaviour factors q for such structural type. The choice of the behaviour factor q for CLT buildings in the new “timber” chapter of EC8 has been made by examining several proposals available in literature. Most of these studies were not referred to any specific design provision and certainly could not have followed the design rules drafted in the second generation of Eurocodes. This paper presents a study aimed to verify whether the proposed values of the behaviour factors q are consistent with the attained seismic performances of CLT buildings designed in accordance with the new “timber chapter” of EC8. Parametric non‐linear static (pushover) analyses and a risk‐consistent approach, based on the use of Incremental Dynamic Analyses (IDA) and fragility curves were conducted to evaluate the performance of a few selected archetypes. The results obtained from the analyses and the risk‐consistent approach showed that the proposed values of q‐factor for CLT buildings in second generation of Eurocode, namely 2.30 and 3.20 for a ductility class 2 (DC2) and 3 (DC3) respectively, can be reasonably accepted.

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A methodology to determine the seismic low-cycle fatigue strength of timber connections

Cited by 22 publications

References 26 publications

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

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

Reinforcement of Dowel-Type Timber Joints with Self-tapping Screws

Verification of the behaviour factors proposed in the second generation of Eurocode 8 for cross‐laminated timber buildings

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