Experimental Cyclic Testing of URM Pier-Spandrel Substructures

Knox, Charlotte; Dizhur, Dmytro; Ingham, Jason

doi:10.1061/(asce)st.1943-541x.0001650

Cited by 17 publications

(4 citation statements)

References 19 publications

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“…In accordance with the analysis of the literature on masonry structures [1,2,7,34,38], the stiffness ratio of pier to spandrel of design of masonry walls was in the range of 0.4-2.0. Considering the various sizes of the pier and spandrel in the existing masonry structures, 21 models with different aspect ratio of pier and stiffness ratio of pier to spandrel were designed.…”

Section: Model Designsupporting

confidence: 82%

Numerical Analysis of Different Influencing Factors on the In-Plane Failure Mode of Unreinforced Masonry (URM) Structures

Yao

2022

Buildings

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The research work herein presented is aimed at investigating the effects of different influencing factors on the in-plane failure mode of unreinforced masonry (URM) structures. Firstly, the in-plane stress failure criterion cited in this paper was introduced, and the corresponding judgment procedure was demonstrated. Then, various finite element models considering different influencing factors were established, which included the aspect ratio of pier (η), stiffness ratio of pier to spandrel (ρ) and vertical load (σ). Furthermore, the in-plane stress failure criterion that we introduced was used to evaluate the failure modes of each model. The main findings of the simulations were as follows: under the condition of (η ≤ 1.0), three failure modes emerged in all models, which included pier, mixed and spandrel failure modes, with the gradual increase in ρ. Once the value of η exceeded 1.0, all models exhibited the pier failure mode regardless of whether the value of ρ increased or decreased. Moreover, under the identical aspect ratio (η = 1.0), the failure modes of the models altered regularly with the increase in the value of σ (from 0.3 MPa to 0.6 MPa), which transferred from pier failure to mixed failure, and from mixed failure to spandrel failure. The research results not only provide theoretical reference for the design of new masonry buildings, but also provide technical guidance for the judgement and prediction of failure modes of existing masonry buildings.

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Section: Model Designsupporting

confidence: 82%

Numerical Analysis of Different Influencing Factors on the In-Plane Failure Mode of Unreinforced Masonry (URM) Structures

Yao

2022

Buildings

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“…The obtained test data can be used for further relevant parameters for seismic design concepts, like behaviour factor, stiffness and stiffness degradation. This topic is discussed in (Knox & Ingham, 2011;Tomazevic et al, 1996a;Zimmermann et al, 2010b). A further possibility for experimental testing is the performance of shake table tests on a vibrating table.…”

Section: Testing Methods Of Dynamic Parametersmentioning

confidence: 99%

Earthquake Resistant Structures

Park¹,

Hamza²

2016

Reference Module in Materials Science and Materials Engineering

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“…Experimental evidence showed that most of the observed damage was localized in the spandrel-panel, whereas rocking of piers governed the hysteretic response, and the strengthening system was effective in improving lateral response. Knox and his co-authors presented two experimental studies [21][22] focusing on the influence of spandrel panels on the mechanical response of URM structures under in-plane cyclic lateral loads. Pier-spandrel sub-assemblages were tested in [21] in which different failure modes of the whole structure were observed depending on different spandrel's aspect-ratio (namely, height-to-width ratio).…”

Section: Introductionmentioning

confidence: 99%

“…Knox and his co-authors presented two experimental studies [21][22] focusing on the influence of spandrel panels on the mechanical response of URM structures under in-plane cyclic lateral loads. Pier-spandrel sub-assemblages were tested in [21] in which different failure modes of the whole structure were observed depending on different spandrel's aspect-ratio (namely, height-to-width ratio). The experimental outcomes derived from testing a half-scale two-story perforated (i.e., with multiple door-and window-type openings) URM wall were provided in [22].…”

Section: Introductionmentioning

confidence: 99%

Experimental in-Plane Lateral Response of a Full-Scale Adobe Masonry Wall With Opening

Cassese¹,

Fenu²,

Asprone³

et al. 2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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A large amount of world population lives nowadays in earthen buildings, often constructed only based on construction practice and within earthquake-prone regions. In the recent history, several strong earthquakes had dramatic consequences on these structures, highlighting their significant seismic vulnerability due to multiple reasons, such as poor mechanical properties, poor detailing, and large inertia mass. Several aspects of seismic performance of existing earthen constructions need to be investigated through full-scale experimental testing. In this regard, the present study aims at contributing to the investigation by testing a full-scale adobe masonry wall with a central door-type opening under in-plane lateral loading with cyclic fashion. The mechanical behaviour of materials, specimen's design, loading protocol and instrumentation setup are described. The experimental response curves, observed damage evolution and failure mode are discussed, especially focusing on dissipation capacity of the wall.

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Experimental Cyclic Testing of URM Pier-Spandrel Substructures

Cited by 17 publications

References 19 publications

Numerical Analysis of Different Influencing Factors on the In-Plane Failure Mode of Unreinforced Masonry (URM) Structures

Numerical Analysis of Different Influencing Factors on the In-Plane Failure Mode of Unreinforced Masonry (URM) Structures

Earthquake Resistant Structures

Experimental in-Plane Lateral Response of a Full-Scale Adobe Masonry Wall With Opening

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