Innovative Method for Seismic and Energy Retrofitting of Masonry Buildings

Facconi, Luca; Lucchini, Sara S.; Minelli, Fausto; Grassi, Benedetta; Pilotelli, Mariagrazia; Plizzari, Giovanni

doi:10.3390/su13116350

Cited by 9 publications

(5 citation statements)

References 16 publications

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“…The concern for seismic risk and its differentiated distribution in the territorial and urban context creates asymmetries in the map of spatial and temporal disadvantages, respectively, due to the different conformations of the built heritage and to the diversified perception of risk by residents and administration [52][53][54][55][56]. Similarly, the energy issue, especially in the background of its double dimensions-the general one, concerning the reduction of the climate change effects, and the specific one, the issue of the energy-building poverty-creates further aspects of urban imbalance, triggering filtering down processes in the disadvantaged districts [57][58][59][60][61][62][63][64][65].…”

Section: Contents and Aimsmentioning

confidence: 99%

Seismic–Energy Retrofit as Information-Value: Axiological Programming for the Ecological Transition

Trovato,

Ventura,

Lanzafame

et al. 2024

Sustainability

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The research deals with the issue of the seismic and energy retrofit of historic building fabrics having as reference a historic district of Syracuse (Italy). The prospect of the ecological transition on the one hand and the public support funding on the other claim for a valuation programming approach implying the creation of multiple scenarios, each of which is inspired by a different and complementary degree of “saliency and urgency”. These two dimensions of “being worth” by a building aggregation having an its own shape and belonging to a larger and more complex urban system need to be addressed according to some axiological reference, in this case, the concerns of the efficiency and fairness of public spending. This experience concerns the creation of a value-based programming pattern of the seismic–energy retrofit process framed in a Building Information Modelling (BIM) environment aimed at identifying the best intervention strategy among the several ones that can be generated in the logic of the parametric design. Both seismic and energy retrofit expected performances, in fact, can be scaled, complementing the extension and intensity of the interventions. This experiment takes advantage of the BIM multidimensional logic in line with the multiple scales and purposes implied by the relationships between individual/communal axiological profiles and present/future prospects. The experiment consists of the creation of an additive cost-oriented design platform based on which the different and progressive combinations of intensity and extension of the interventions can be compared and selected.

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Section: Contents and Aimsmentioning

confidence: 99%

Seismic–Energy Retrofit as Information-Value: Axiological Programming for the Ecological Transition

Trovato,

Ventura,

Lanzafame

et al. 2024

Sustainability

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“…performance of similar systems applied on RC and masonry members [22][23][24] and proof of concept regarding the effectiveness of such solutions has been provided. 21,25 A numerical study by Gkournelos et al 23 concluded that the combined seismic and energy retrofitting of existing RC buildings can reduce seismic vulnerability and minimize the expected annual loss related to earthquake risks.…”

Section: Introductionmentioning

confidence: 99%

“…who investigated this system's applicability on masonry walls subjected to out‐of‐plane and in‐plane loading. Subsequently, several experimental and numerical studies were conducted to examine the performance of similar systems applied on RC and masonry members 22–24 and proof of concept regarding the effectiveness of such solutions has been provided 21,25 . A numerical study by Gkournelos et al 23 .…”

Section: Introductionmentioning

confidence: 99%

Seismic and energy upgrading of existing buildings—full‐scale testing of retrofitted masonry‐infilled RC frames

Christis Z,

Renos,

Nicholas

et al. 2023

Earthq Engng Struct Dyn

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Taking into consideration the seismic vulnerability and the poor energy performance of the European building stock, and the increasing socio‐economic and environmental need for integrating seismic upgrading with energy efficiency improvement, an experimental study involving the lateral load testing of full‐scale one‐story one‐bay masonry infilled RC frames and load‐bearing masonry walls was carried out in the framework of the SupERB research project aiming to investigate the efficiency of integrated seismic and energy upgrading systems. The integrated approach is based on the use of textile reinforced mortar (TRM) overlays combined either with traditional thermal insulation (extruded polystyrene, XPS) or with thermally efficient mortar incorporating phase change material (PCMs). The proposed integrated approach can be applied on the exterior face of the structure, so as to facilitate its application in real structures in the easiest possible way and with minimum disturbance to the inhabitants of the buildings. In this paper, only the structural performance of masonry‐infilled RC frames retrofitted with the proposed integrated approach is presented, while the energy benefits will be presented in a separate paper. Thus, in this paper, the structural performance of an integrated seismic and energy upgrading approach was assessed through five full‐scale one‐story one‐bay masonry infilled RC frames that were retrofitted with different schemes of TRM combined with thermal insulation materials subjected to in‐plane displacement‐controlled cyclic loading. The following parameters were investigated experimentally: the number of TRM overlays (one or two layers of TRM combined with thermal insulation), the use of thermally efficient PCM‐enhanced TRM layer in contrast to the use of conventional XPS insulation, and different retrofitting configurations (placement of the TRM in a sandwich form over and/or under the novel or the traditional insulation). From the results obtained in this study, it can be concluded that all energy and seismic upgrading systems examined have a positive impact on the response of the structural system to cyclic loading, with the ones with two layers of TRM having a better performance compared to the ones with one layer of TRM and all of them a better performance than the control specimen. The use of two layers of TRM cancels the drawback of infilled frames, which at very small drifts they reach their maximum capacity and after that they rapidly fall to the capacity of the bare frame, providing capacities above 80% of their peak capacity for drifts up to 2%. In all the tests the TRM whether it was combined with XPS or included PCMs contributed to a better distribution of the cracks in the infill and delayed premature brittle failures. The presence of the TRM had also the advantage that it remained intact throughout the tests preventing the fall of debris out of the plane of the infilled frame, both in the retrofitted and unretrofitted sides.

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“…Generally, the beam-column joint experiences a brittle shear failure. Therefore, efforts are needed to strengthen the structures that were built in the 70s and 80s for their sustainability [16][17][18][19]. Several structural strengthening methods have been proposed to withstand seismic loads.…”

Section: Introductionmentioning

confidence: 99%

Deformation Capacity of RC Beam-Column Joints Strengthened with Ferrocement

et al. 2022

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Beam-column joints constructed in the pre-seismic building code do not provide transverse reinforcement and good reinforcement detailing within the region. These cause the occurrence of brittle shear failure, which is one of the factors affecting the number of reinforced concrete (RC) moment resistance building structures collapsing during an earthquake. Therefore, in this study a brittle beam-column joint with a non-seismic building code was designed and strengthened by a ferrocement. Four layers of wire mesh with a diameter of 1 mm and a mesh size of 25.4 mm were installed on both sides of the beam-column joint and cement mortar was cast on it. As a comparison, a ductile beam-column joint was also designed following the current building code, which considers seismic effects. The test results by applying reversed cyclic loading at the beam tip showed that strengthening using ferrocement prevents crack propagation, increasing the deformation capacity, ductility, stiffness, and energy dissipation of beam column joint which are higher than those of the beam-column joint which is designed following the current building code. However, the strengthening does not improve the load carrying capacity significantly.

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Innovative Method for Seismic and Energy Retrofitting of Masonry Buildings

Cited by 9 publications

References 16 publications

Seismic–Energy Retrofit as Information-Value: Axiological Programming for the Ecological Transition

Seismic–Energy Retrofit as Information-Value: Axiological Programming for the Ecological Transition

Seismic and energy upgrading of existing buildings—full‐scale testing of retrofitted masonry‐infilled RC frames

Deformation Capacity of RC Beam-Column Joints Strengthened with Ferrocement

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