A Fe Model for TRM Reinforced Masonry Walls with Interface Effects

Gulinelli, Pietro; Aprile, Alessandra; Rizzoni, Raffaella; Grunevald, Yves Henri; Lebon, Frédéric; Lovisetto, Roberto; Tralli, Sergio

doi:10.4028/www.scientific.net/kem.817.57

Cited by 3 publications

(4 citation statements)

References 27 publications

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“…Columns wrapping with C-FRP 2.7 a (1.7-3.5) 2.4 a (1.5-3) 11.8 a (8.2-19.4) RC Beams shear strengthening with ETS RC Infill walls replacement by RC panels 2.7 (1.6-3.5) 2.1 (1.1-3) 22.6 (13.6-31.3) Fig. 12 Application of a steel portal frame to a URM building Reinforced Mortar (TRM) was extensively applied for damaged URM strengthening's works during post-earthquake reconstruction since it have been proved to be extremely effective if properly applied (Gulinelli et al 2019).…”

Section: Masonry Buildingsmentioning

confidence: 99%

Assessing community resilience, housing recovery and impact of mitigation strategies at the urban scale: a case study after the 2012 Northern Italy Earthquake

Basaglia

Aprile

Spacone

et al. 2020

Bull Earthquake Eng

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In this paper, the reconstruction process of a town affected by the 2012 Northern Italy Earthquake is analysed using information published on the town journal. Relevant aspects are highlighted, and the housing recovery is compared with that of a nearby city. Then, a what-if scenario is considered, by proposing a set of seismic mitigation strategies. These strategies are applied to a small sub-system of the city and the variation of the buildings’ vulnerability and expected damage is evaluated using a recently introduced methodology for risk assessments at the urban scale. Finally, a cost–benefit analysis is performed to assess the effectiveness of the proposed strategies. The analysis highlights a significant reduction in the expected damage and socioeconomic impact, as well as an increase in the overall performance of the urban system.

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Section: Masonry Buildingsmentioning

confidence: 99%

Assessing community resilience, housing recovery and impact of mitigation strategies at the urban scale: a case study after the 2012 Northern Italy Earthquake

Basaglia

Aprile

Spacone

et al. 2020

Bull Earthquake Eng

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“…In RP1, masonry infill panels are strengthened with FRCM, an innovative composite material that is based on high strength fibers grids embedded into inorganic matrices, such as natural mortars or cements. The application of FRCM at both panel's surfaces can lead to an increment of their in-plane strength up to twice the unreinforced one [56]. Figure 12 shows the comparison between in-plane force-displacement relationships of strengthened and AB infill panels, using the same symbology of Figure 8.…”

Section: Infill Panels Strengthening (Rp1)mentioning

confidence: 99%

Advanced Techniques for Pilotis RC Frames Seismic Retrofit: Performance Comparison for a Strategic Building Case Study

Grossi¹,

Zerbin²,

Aprile³

2020

Buildings

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Pilotis buildings have widely spread out in developed countries since World War II onwards. From the structural point of view, Pilotis RC frames exhibit substantial lack in ductility capacity and shear resistance localized at the first floor, since they have been mainly realized before the seismic codes’ era. The present study shows the performance comparison of four advanced retrofit techniques when applied to typical Pilotis RC frame designed for gravity loads only according to Italian building code of ‘60s. A preliminary investigation has been performed to select non-linear numerical models suitable to describe the considered RC frame behavior, involving flexural inelastic hinges of RC beams and columns and in-plane axial inelastic hinges of masonry infill panels. Two seismic retrofit projects have been designed at a local level, by strengthening the masonry infilled panels with Fiber Reinforced Cementitious Matrix (FRCM) technique and alternatively by replacing infilled panels with prefabricated panels disconnected from the structure, so that no infill/frame interaction occurs. Two more retrofit projects have been designed at a global level, in order to improve the overall structural performance making use of energy dissipation and, alternatively, base isolation techniques. Nonlinear time history analysis and structural assessment have been carried out for the as-built case as well as for the four retrofit solutions according to Eurocode 8 and Italian Building Code, in order to highlight the structural deficiencies and relative improvements, respectively. Performances offered by the proposed retrofit techniques have been finally compared in terms of structural behavior, expected damage, and economic impact.

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“…(Ferrara, Italy), concerned in-plane diagonal compression tests on TRM-reinforced masonry panels as well as the mechanical characterisation of the materials (cf. [36]).…”

Section: Experimental Campaignmentioning

confidence: 99%

“…Lastly, the proposed numerical model is tested on the original experimental results (cf. [36]). The present paper contains a complete description of the numerical model developed to simulate the TRM systems.…”

Section: Introductionmentioning

confidence: 99%

Multiscale Numerical Analysis of TRM-Reinforced Masonry under Diagonal Compression Tests

et al. 2020

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The present paper reports an experimental study coupled with a numerical modelling approach to simulate masonry walls strengthened with textile-reinforced mortar (TRM). This innovative reinforcing technique is based on high-strength fibre grids embedded into inorganic matrices, and it has recently been promoted for the seismic retrofitting of historical masonry buildings. In the experimental campaign presented here, two different commercial TRM systems are applied to single-leaf clay masonry panels. The specimens are then subjected to diagonal compression tests in order to evaluate the effects of TRM on the structural performance. The proposed finite element (FE) model, based on an original multiscale approach, is employed to simulate the diagonal compression tests. The numerical results show a very good agreement with the experimental data, including in terms of failure mode. In particular, the approach reproduces the macroscopic behaviour of the masonry panels as regards the force-displacement response, and it allows for the possibility of simulating bed joint sliding and TRM layer debonding.

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A Fe Model for TRM Reinforced Masonry Walls with Interface Effects

Cited by 3 publications

References 27 publications

Assessing community resilience, housing recovery and impact of mitigation strategies at the urban scale: a case study after the 2012 Northern Italy Earthquake

Assessing community resilience, housing recovery and impact of mitigation strategies at the urban scale: a case study after the 2012 Northern Italy Earthquake

Advanced Techniques for Pilotis RC Frames Seismic Retrofit: Performance Comparison for a Strategic Building Case Study

Multiscale Numerical Analysis of TRM-Reinforced Masonry under Diagonal Compression Tests

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