Analytical and Experimental Lateral-Load Response of Self-Centering Posttensioned CLT Walls

Akbaş, Tuğçe; Sause, Richard; Ricles, James M.; Ganey, Ryan; Berman, Jeffrey W.; Loftus, Sarah E.; Dolan, J. Daniel; Pei, Shiling; Lindt, John W. van de; Blomgren, Hans-Erik

doi:10.1061/(asce)st.1943-541x.0001733

Cited by 78 publications

(26 citation statements)

References 4 publications

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“…The second type uses fiber-discretized elements or distributed springs to simulate the rocking interface while extending the wall to the actual width (in order to simulate rocking moment lever arm) with simple rigid elements. [13][14][15] There are other simplified models such as Sandoli et al 16 where rigid body rocking of the rocking panels is assumed. But when high aspect ratio rocking panels are present, which will have significant elastic deformations and higher-mode responses, rigid body panel models could not capture dynamic deformation of the panel itself.…”

Section: F I G U R E 1 Kinematics Configuration Of the Simplified Rocking Wall Modelmentioning

confidence: 99%

“…These models can be quite accurate but also computationally expensive. The second type uses fiber‐discretized elements or distributed springs to simulate the rocking interface while extending the wall to the actual width (in order to simulate rocking moment lever arm) with simple rigid elements 13–15 . There are other simplified models such as Sandoli et al 16 where rigid body rocking of the rocking panels is assumed.…”

Section: Introductionmentioning

confidence: 99%

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Simplified Dynamic Model for Post‐tensioned Cross‐laminated Timber Rocking Walls

Pei

Huang

Berman

et al. 2020

Earthq Engng Struct Dyn

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This paper presents a computationally efficient numerical model for predicting seismic responses of post‐tensioned cross‐laminated timber (CLT) rocking wall systems. The rocking wall is modeled as a simple linear beam element with a nonlinear rotational spring at the base. The model is primarily intended for preliminary design and assessment of multistory buildings using this particular lateral system. A method was developed to determine the nonlinear rotational spring parameters by considering the dimension of the CLT wall panel and post‐tensioned steel rods and energy dissipating devices’ contributions. The proposed model was validated by comparing the simulated results with the responses from a series of shake table tests of a full‐scale two‐story building with CLT rocking walls. The numerical results show reasonable agreement with the shake table test results considering the simplicity of the model.

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Section: F I G U R E 1 Kinematics Configuration Of the Simplified Rocking Wall Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simplified Dynamic Model for Post‐tensioned Cross‐laminated Timber Rocking Walls

Pei

Huang

Berman

et al. 2020

Earthq Engng Struct Dyn

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show abstract

“…The success of the system inspired component tests implementing CLT instead of LVL, with the specific intention of improving the ductility of contemporary lateral force-resisting systems in CLT buildings (Ganey et al 2017). Akbas et al (2017) derived model parameters from the experimental test data of Ganey et al (2017). These results were then used to design a full-scale shake table test of a two-story CLT building with posttensioned rocking walls.…”

Section: Time-to-functionality Fragility Curvesmentioning

confidence: 99%

Time-to-Functionality Fragilities for Performance Assessment of Buildings

et al. 2021

Self Cite

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This paper presents a new stochastic methodology for evaluating and quantifying the downtime of a structure in terms of a family of fragilities that represent the probability of exceeding prescribed times to return to functionality. This methodology integrates several existing concepts, namely, Federal Emergency Management Agency P-58 and Resilience-based Earthquake Design Initiative (REDi), to build a family of system (building) level fragility curves corresponding to the time needed to achieve different recovery levels (reoccupancy, functional recovery, and full recovery). This approach enables one to propagate uncertainty throughout the procedure so that variations in the delay time and repair schedules are accounted for in the resulting fragilities. As an illustrative example of this approach, the methodology is applied to assess the downtime of a two-story mass timber building that was originally tested at the NHERI@UCSD outdoor shake table in 2017. One unique aspect of this analysis is that it incorporates a relatively new material, cross-laminated timber (CLT), in a resilient posttension rocking wall design application. Nonstructural components representing a typical office building were selected and incorporated into the procedure for the two-story CLT rocking wall building. Time-to-functionality fragility curves are then developed for the two-story building, and potential design and resilience-focused applications are discussed.

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“…Several studies have been conducted to analyze the recentering and dissipative characteristics of structures made with this technology (Akbas et al, 2017;Ganey et al, 2017;Hashemi et al, 2020). As well as the dissipative effects due to the insertion of rocking elements inside existing structures to be entrusted with the migration of damage (Pilon et al, 2019;Sandoli et al, 2020;, or due to the presence of metal connections for reinforcement interventions in its plane with CLT panels (Longarini et al, 2018) or off-plan (Riccadonna et al, 2019).…”

Section: Parasite Architecture: Structural Aspectsmentioning

confidence: 99%

A sustainable material for sustainable architecture: wood in parasite architecture

Rinaldi¹,

Frunzio²,

Guadagnuolo³

et al. 2021

Congresso Internacional Sobre Patologia E Reabilitação Das Construções

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The pandemic Covid-19 has distorted the way of living and enjoying the spaces. Unfortunately, cities are often saturated and many of the public buildings fail to meet the new needs. The need to expand the spaces is a problem and an opportunity: intervening on the existing patrimony, however, requires a multidisciplinary commitment. The interventions on the built heritage have several problems, on the one hand technological, aimed at improving the energy impact of the new building, and on the other properly structural, because the existing heritage was not always built with seismic requirements. This article presents some possible solutions for intervention on the existing patrimony for the implementation of the spaces through volumetric addition, "parasitic architecture", and how the use of wood and its derivatives can allow it.

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Analytical and Experimental Lateral-Load Response of Self-Centering Posttensioned CLT Walls

Cited by 78 publications

References 4 publications

Simplified Dynamic Model for Post‐tensioned Cross‐laminated Timber Rocking Walls

Simplified Dynamic Model for Post‐tensioned Cross‐laminated Timber Rocking Walls

Time-to-Functionality Fragilities for Performance Assessment of Buildings

A sustainable material for sustainable architecture: wood in parasite architecture

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