Masonry elements with multi-layer bed joints: Behaviour under monotonic and static-cyclic shear

Mojsilović, Nebojša; Petrović, Miloš; Anglada, Xavier Riba

doi:10.1016/j.conbuildmat.2015.09.065

Cited by 15 publications

(18 citation statements)

References 9 publications

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“…9a. As it was in the case for static-cyclic shear tests on masonry triplets with a multi-layer bed joint [12], and in spite of the fact that sliding had already occurred, values of the recorded horizontal force increased as the number of performed cycles increased, cf. Specimens WB and WG slid more than Specimens WGK and WK.…”

Section: Preliminary Testing Phasementioning

confidence: 81%

“…Using the friction coefficients, tanφ, determined from the investigation on masonry triplets with a multi-layer bed joint [12], while neglecting the small cohesion values and taking into account the applied pre-compression stress level, the experimentally obtained values of the maximum horizontal force resistance of specimens of the preliminary testing phase could be predicted well, cf. Table 5.…”

Section: Horizontal Force Resistance and The Wall Size Effectmentioning

confidence: 95%

“…All walls were tested under fixed-end boundary conditions. Within the first phase of the experimental programme and according to findings from shear tests on masonry triplets [12], four different core soft layer types, namely rubber granulate, cork-rubber granulate, cork and bitumen, were tested. The objectives of the preliminary phase were to determine the most promising type of core soft layer for the main testing phase, and to verify the applied vertical pre-compression levels and the measurement system.…”

Section: Test Programme and Masonry Materialsmentioning

confidence: 99%

“…Rubber granulate soft layers were in some cases heavily damaged during the sliding, whereas the elastomer layers were found to be significantly more durable. Recently, as a part of the presented research project, several series of monotonic and quasi-static cyclic, displacement controlled tests were performed on masonry triplets with a multi-layer bed joint, see Mojsilović et al [12]. The so-called multi-layer bed joint consisted of a core soft layer (rubber granulate, cork, cork-rubber granulate, bitumen and PVC based membranes were used) which, in order to reduce the damage caused by cyclic loading, was protected by two layers of elastomer, and placed in the middle of the mortar bed joint.…”

Section: Introductionmentioning

confidence: 99%

“…where it was found that the loading speed affected the shear characteristics of masonry triplets with bitumen-and polyester-based DPCs soft layers placed in bed joints. In addition, it was shown in [12] that the friction coefficient is also a function of the normal pressure (precompression) acting at the interface where the sliding occurs. Having this in mind, it appears that the loading speed and pre-compression are the important parameters for the proper assessment of the horizontal force-deformation characteristics of masonry multi-layer bed joints during sliding.…”

Section: Introductionmentioning

confidence: 99%

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Masonry walls with a multi-layer bed joint subjected to in-plane cyclic loading: An experimental investigation

Petrović

Mojsilović

Stojadinović

2017

Engineering Structures

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A series of static-cyclic shear tests on full-scale unreinforced masonry (URM) walls with multi-layer bed joints have been performed within a research project on the seismic behaviour of unreinforced masonry walls with soft layer membrane placed in the bed joint to induce sliding. Walls were made using typical perforated Swiss clay blocks and standard cement mortar and the so-called multi-layer bottom bed joints, which comprise a core soft layer protected by two layers of extruded elastomer and placed in the middle of mortar joint. The preliminary testing phase was aimed at choosing the most suitable core soft layer type among the four types considered (rubber granulate, cork, cork-rubber granulate and bitumen). The main testing phase comprised five tests on storey-high URM specimens with rubber granulate core soft layers performed to investigate the influence of the size, the pre-compression level and the aspect ratio on the seismic behaviour of URM walls with a multi-layer bed joint. Sliding occurred in all tested specimens. However, the final failure mode as well as the displacement capacity of test specimens were governed by the extent of shear and tensile (vertical) cracks that developed from the bottom brick course. The response of specimens can be interpreted using a multilinear horizontal forcedisplacement response idealization, whose parameters can be estimated using the proposed equations.

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Section: Preliminary Testing Phasementioning

confidence: 81%

Section: Horizontal Force Resistance and The Wall Size Effectmentioning

confidence: 95%

Section: Test Programme and Masonry Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Masonry walls with a multi-layer bed joint subjected to in-plane cyclic loading: An experimental investigation

Petrović

Mojsilović

Stojadinović

2017

Engineering Structures

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A macro‐model for describing the in‐plane seismic response of masonry‐infilled frames with sliding/flexible joints

Dhir

Tubaldi

Pantò

et al. 2022

Earthq Engng Struct Dyn

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Masonry infill walls are among the most vulnerable components of reinforced concrete (RC) frame structures. Recently, some techniques for enhancing the performance of the infills have been proposed, aiming at improving both the global and the local behaviour of the infilled frame structure. Among the most promising ones, there are those that aim to decouple or reduce the infill-frame interaction by means of flexible or sliding joints, relying respectively on rubber or low-friction materials at the interface between horizontal subpanels or between the panels and the frame. Numerous models have been developed in the last decades for describing the seismic response of masonry-infilled RC frames, but these have focused mainly on the case of traditional infills. This study aims to fill this gap by proposing a two-dimensional macro-element model for describing the in-plane behaviour of RC infilled frames with flexible or sliding joints.The proposed modelling approach, implemented in OpenSees, is an extension of a discrete macro-element previously developed for the case of traditional infill panels. It is calibrated and validated in this study against quasi-static tests from the literature, carried out on masonry-infilled RC frames with sliding and rubber joints. The study results show the capabilities of the proposed modelling approach to evaluate the benefits of using flexible joints in terms of minimising the negative effects of the interaction between infill and RC frame and limiting the increase of global stiffness of the system with respect to the bare frame condition.

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Multi-layer masonry bed joint subjected to shear: Analytical modelling

Mojsilović

Petrović

Stojadinović

2019

Construction and Building Materials

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Masonry elements with multi-layer bed joints: Behaviour under monotonic and static-cyclic shear

Cited by 15 publications

References 9 publications

Masonry walls with a multi-layer bed joint subjected to in-plane cyclic loading: An experimental investigation

Masonry walls with a multi-layer bed joint subjected to in-plane cyclic loading: An experimental investigation

A macro‐model for describing the in‐plane seismic response of masonry‐infilled frames with sliding/flexible joints

Multi-layer masonry bed joint subjected to shear: Analytical modelling

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