Repair and Strengthening of Existing Reinforced Concrete Structures (Second Volume)
A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Construction and Building Materials".
Deadline for manuscript submissions: 20 January 2025 | Viewed by 1481
Special Issue Editor
Interests: novel construction materials; seismic strengthening of existing structures; sustainability and resilience engineering; reinforced concrete
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Recent devastating earthquakes have highlighted the urgent need for the structural upgrade of existing Reinforced Concrete (RC) structures that are prone to structural failures and collapses.
At the same time, the need for immediate actions to mitigate the dramatic consequences of the climate emergency is a key priority, and novel cost-effective solutions are required for the enhancement of energy efficiency and the thermal insulation of existing structures using sustainable resources.
This second volume of the Special Issue “Repair and Strengthening of Existing Reinforced Concrete Structures” is focused on the development of novel repair and strengthening techniques using sustainable materials for the enhancement of structural performance and energy efficiency.
Authors are welcome to submit original contributions in the following areas:
- Low-cost repair and strengthening techniques.
- The development of novel repair and strengthening techniques using sustainable materials.
- Enhancing the structural performance, resilience, and longevity of existing RC structures.
- Structural and energy upgrade of existing RC structures.
- Multi-hazard protection of existing RC structures.
Dr. Andreas Lampropoulos
Guest Editor
Manuscript Submission Information
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Keywords
- repair and strengthening
- reinforced concrete structures
- structural strengthening
- sustainability
- energy upgrade
- multi-hazard protection
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Planned Papers
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Comparison between design methods for seismic retrofit of R.C. frames using dissipative bracing systems
Authors: Piero Colajanni; Muhammad Ahmed; Jennifer D’Anna
Affiliation: University of Palermo, Department of Engineering, Viale delle Scienze, 90128 Palermo, Italy
Abstract: The use of braces equipped with dissipative devices for the seismic strengthening of seismically prone reinforced concrete frames is among the most widespread methods, as it allows for high reductions in seismic vulnerability with inexpensive, quickly executed interventions, which can often be carried out mainly by the exterior, resulting in interruptions of use limited both in time and to only small portions of the building. The design methods of dissipative devices are based on the extensive use of pushover analyses capable of highlighting the structural deficiencies of the building and comparing the performances achievable by developing designs according to different methods and sizing criteria. In the present work, with reference to a case study represented by a four-story spatial frame having characteristics representative of design and construction common practice of the 1970s in Southern European countries, the performance of three different design methods is compared. The examined procedures differ for: methods for estimating the peak displacement response of the nonlinear systems, namely the well-known Equal Displacement Rule and the Equivalent (secant) stiffness and Damping rule; and criteria for distributing stiffness and strength of the bracing along the height, namely the distribution of stiffness and strength proportionally to those of the frame, and methods that vary the stiffness and strength along the height in order to minimize the eventual irregularity in elevation of the bare frame. The effectiveness of the procedures is checked by static pushover analysis and nonlinear response history analysis, performed by unidirectional and bidirectional input. Pros and cons of each procedure are summarized, all of them able to provide bracing designs that meet the performance requirements set during the design phase.
