Shake table tests on the two-storey dry-joint stone masonry structures reinforced with timber laces and steel wires

Wang, Ming; Li, Kai; Guragain, Ramesh; Shrestha, Hima; Ma, Xing

doi:10.1007/s10518-018-00528-6

Cited by 13 publications

(10 citation statements)

References 16 publications

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“…Costa et al 14,15 and Candeias et al 16 tested two C-plan wall assemblies without roof, with wall thickness ranging from 0.50 to 0.65 m and mortar compressive strength of 1.3 MPa. Sathiparan et al, 17 Ali et al 18 and Wang et al 19 tested single-room, single-story models with geometric scale ranging between 1:4 and 1:2 and mortar being either absent or up to a 4.0 MPa strong in compression. Benedetti et al, 20 Dolce et al, 21 Mazzon et al, 22 Magenes et al 23 and Vintzileou et al 24 investigated single-room, two-stories models with geometric scale ranging between 1:2 to approximately natural scale and mortar compressive strength between 0.7 and 4.6 MPa.…”

mentioning

confidence: 99%

Seismic behaviour of rubble masonry: Shake table test and numerical modelling

Felice

Liberatore

Santis

et al. 2022

Earthq Engng Struct Dyn

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The destruction of Amatrice and the surrounding villages in Central Italy after the 2016 seismic sequence was so impressive that engineers, authorities and local communities started sharing the common feeling that historical stone masonry buildings were too below current safety standards. The severe damage caused by the earthquakes led to a general distrust of traditional building techniques, leading to the conclusion that there is nothing to do but demolish and rebuild, perhaps with a false antique. Is there an alternative? Is there a way to combine safety and preservation of architectural heritage? This paper aims contributing to the understanding of the seismic behaviour of stone masonry by reproducing, through simulation on a shake table, the progressive loss of compactness of a real scale rubble masonry wall up to the ruinous collapse with the separation between the two external leaves. The laboratory simulation allowed to evaluate the decrease of the fundamental frequency with increasing damage and estimate the maximum displacement profile and the amount of cracking that the wall is able to sustain before failing. Eventually, two modelling strategies based on finite and discrete element methods were proposed and applied to verify the capability of simulating the out-of-plane seismic response and the failure mechanisms of rubble masonry.

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confidence: 99%

Seismic behaviour of rubble masonry: Shake table test and numerical modelling

Felice

Liberatore

Santis

et al. 2022

Earthq Engng Struct Dyn

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“…This parameter depends on the arrangement of the units at the corners and on the presence of openings near the corners, which both need to be accurately surveyed, and/or on the presence of tie-bars, for which the number at each oor and the effectiveness of end plates need to be carefully evaluated. A number of solutions have been proposed to improve the connections between orthogonal walls, ranging from traditional tie-bars and connectors (Ismail et al, 2010) to low-technological solutions using timber laces (Wang et al, 2019), crowning beam in reinforced masonry (Castori et al, 2018) and externally bonded reinforcements (De Santis and de Felice, 2021).…”

Section: Connection Between Orthogonal Walls (#1)mentioning

confidence: 99%

An Expeditious Tool for the Vulnerability Assessment of Masonry Structures in Post-Earthquake Reconstruction

Santis

2022

Preprint

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Post-earthquake reconstruction activities need tools for assessing the vulnerability of structures, based on visual inspection and quick survey. So far, the public administrations in charge of granting the funds and monitoring reconstruction have adopted different methods taken from scientific literature or developed ad hoc for specific events. The time is ripe for a standard method to be developed, treasuring from the lessons learned in the field. This paper proposes an expeditious tool based on visual survey for the assessment of the seismic vulnerability of unreinforced masonry buildings, starting from available methods, whose parameters were reassessed and recalibrated, and scientific evidence from recent literature. The influence of the main structural features was considered to calculate a vulnerability index in the 0 ÷ 100 range. The effects of materials and arrangement of masonry were quantitatively evaluated through the masonry quality index, which represents an advancement with respect to current practice. The method was validated on a sample of 50 masonry aggregates and nearly 200 structural units of L’Aquila, Italy, where reconstruction is underway after a destructive earthquake in 2009, which is representative of the built heritage of other earthquake prone areas in Italy and many European Countries.

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“…A single halfscale stone masonry structure was constructed on a rigid steel base connected to a shake table [21]. Three dry stone masonry models scaled by a factor of 0.55 were constructed outside the shake table on a concrete base frame simultaneously [22], but the process of moving those structures up to the shake table was not reported. A similar concrete base was used to construct two 1:3 reduced-scale adobe models [23]; the displacement of the model up to the table was performed using a forklift, and the final lifting and placement of the models on the table were performed with the help of an overhead crane.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Use Time of a Shake Table with Specimen Preparation outside the Table Surface

et al. 2022

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The shake table test is one of the preferred techniques used to understand the dynamic response of a structure. However, due to the limited number of facilities available to perform such tests and their expensiveness, researchers often must rely on numerical models validated with the results of the static tests only. Moreover, most research papers concerning shake table tests lack details on how the tests were planned and executed. This paper explains the steps used for the preparation and execution of shake table tests on three reduced-scale buildings. These buildings were constructed outside the shake table surface, on a metallic base frame, and later moved to the shake table used for the tests in order to optimize the time of the experimental campaign. This approach enabled us to complete the tests in only 6 days. The approach presented in this paper may be helpful to researchers who want to increase the effectiveness of the available shake table facility and overcome the limitations of time and budget. Moreover, the solution presented in this article helps in the displacement of specimens without the use of a crane or other sophisticated hydraulic machinery. Thus, it could also be useful for testing specimens that have been aged and that are sensitive to displacements.

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Shake table tests on the two-storey dry-joint stone masonry structures reinforced with timber laces and steel wires

Cited by 13 publications

References 16 publications

Seismic behaviour of rubble masonry: Shake table test and numerical modelling

Seismic behaviour of rubble masonry: Shake table test and numerical modelling

An Expeditious Tool for the Vulnerability Assessment of Masonry Structures in Post-Earthquake Reconstruction

Optimization of the Use Time of a Shake Table with Specimen Preparation outside the Table Surface

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