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Seismic and Energy Retrofitting of Existing Buildings

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: closed (31 August 2024) | Viewed by 650

Special Issue Editor


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Guest Editor
Department of Structural and Geotechnical Engineering, Sapienza University of Rome, Via Gramsci, 53, 00184 Rome, Italy
Interests: seismic design of structures; assessment and retrofitting of existing bridges and structures; seismic protection of structures with dissipative devices
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Special Issue Information

Dear Colleagues,

The seismic and energy retrofitting of existing buildings represents a significant engineering and environmental imperative, particularly notable in regions with high seismicity and in cases where optimizing the use of energy resources is crucial for environmental sustainability. From the perspective of seismic safety, existing buildings may be inherently vulnerable due to less stringent or even absent seismic regulations at the time of their design and construction. Therefore, seismic retrofitting is fundamental to the preservation of the existing building stock and, simultaneously, the enhancement of the structural resilience of the built environment through targeted interventions such as implementing seismic energy dissipation systems. Concurrently, energy retrofitting is essential for reducing the environmental footprint of the construction sector, which significantly contributes to gas emissions and overall energy consumption. Synergizing seismic and energy retrofitting presents an opportunity to ensure the greater resilience of buildings against natural hazards and contribute to the creation of more sustainable built environments.

Dr. Alessandro Vittorio Bergami
Guest Editor

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Keywords

  • seirsmic retrofitting
  • energy retrofitting
  • sustainability
  • green buildings
  • earthquakes
  • seismic risk

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Published Papers (1 paper)

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Research

21 pages, 4140 KiB  
Article
Investigation of the Seismic Performance of a Multi-Story, Multi-Bay Special Truss Moment Steel Frame with X-Diagonal Shape Memory Alloy Bars
by Dimitrios S. Sophianopoulos and Maria I. Ntina
Appl. Sci. 2024, 14(22), 10283; https://doi.org/10.3390/app142210283 - 8 Nov 2024
Viewed by 401
Abstract
In this work, the seismic response of a multi-story, multi-bay special truss moment frame (STMF) with Ni-Ti shape memory alloys (SMAs) incorporated in the form of X-diagonal braces in the special segment is investigated. The diameter of the SMAs per diagonal in each [...] Read more.
In this work, the seismic response of a multi-story, multi-bay special truss moment frame (STMF) with Ni-Ti shape memory alloys (SMAs) incorporated in the form of X-diagonal braces in the special segment is investigated. The diameter of the SMAs per diagonal in each floor was initially determined, considering the expected ultimate strength of the special segment, developed when the frame reaches its target drift and the desirable collapse mechanism, i.e., the formation of plastic hinges, according to the performance-based plastic design procedure. To further investigate the response of the structure with the SMAs incorporated, half the calculated SMA diameters were introduced. Continuing, three more cases were investigated: the mean value of the SMA diameter was introduced at each floor (case DC1), half the SMA diameter of case DC1 (case DC2), and twice the SMA diameter of case DC1 (case CD3). Dynamic time history analyses under seven benchmark earthquakes were conducted using commercial nonlinear Finite Element software (SeismoStruct 2024). Results were presented in the form of top-displacement time histories, the SMAs force–displacement curves, and maximum inter-story drifts, calculating also maximum SMA displacements. The analysis outcomes highlight the potential of the SMAs to be considered as a novel material in the seismic retrofit of steel structures. Both design approaches presented exhibit a certain amount of effectiveness, depending on the distribution, with the placement of the SMA bars and the seismic excitation considered. Further research is suggested to fully understand the capabilities of the use of SMAs as dissipation devices in steel structures. Full article
(This article belongs to the Special Issue Seismic and Energy Retrofitting of Existing Buildings)
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