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Infrastructures
Special Issues
Structural Rehabilitation, Retrofitting and Strengthening
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Structural Rehabilitation, Retrofitting and Strengthening

A special issue of Infrastructures (ISSN 2412-3811). This special issue belongs to the section "Infrastructures and Structural Engineering".

Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 10222

Special Issue Editor

Dr. Francesca Sciarretta

E-Mail Website
Guest Editor
CY Tech Sciences et Techniques, Cergy Paris Université, 5 mail Gay-Lussac, Neuville-sur-Oise, 95031 Cergy-Pontoise CEDEX, France
Interests: material testing; masonry; historic buildings; structural testing; preservation; strengthening; structural repair; fire behavior; structural monitoring; non-destructive testing

Special Issue Information

Dear Colleagues,

Civil buildings and infrastructures are constantly subjected to the risk of extreme events—e.g., earthquakes, fire, and flooding—but also to aging, pollution, and lack of maintenance. In particular, the structural decay and material deterioration of strategic and/or historic buildings and infrastructures can entail serious economic damage or even danger of losing unique assets belonging to communities’ cultural heritage. Moreover, both ancient and old buildings may not comply with current design code provisions, especially concerning the capacity to withstand extreme events. To increase the service life and preservation of such manufacts, it is essential to test, improve, and increase the available range of techniques and processes for rehabilitation, strengthening, and retrofit. Simple, fast, ready-made, and cost-effective solutions are wished for, especially to limit the time and resources needed for interventions. Additionally, the long-term sustainability of retrofitted structures is a primary goal, which can be pursued with the introduction of new materials or the update of traditional solutions. This brings on high demands for increased knowledge of the properties, behavior, and applicability conditions of advanced materials as well as of their compatibility and interactions with traditional ones.

This Special Issue aims at collecting original papers on research, the state of the art, and case studies, covering developments concerning (but not limited to) the following topics:

  • Sustainability in strengthening, rehabilitation, and retrofit; interventions and maintenance practices;
  • Civil, strategic, and historic buildings and infrastructures;
  • Repair and rehabilitation after earthquake, fire, flooding, and other extreme events;
  • Short- and long-term monitoring and survey for retrofit and strengthening design.

Dr. Francesca Sciarretta
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Infrastructures is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Structural rehabilitation
  • Seismic retrofit
  • Structural monitoring
  • Post-earthquake
  • Post-fire
  • Provisional safety
  • Repair techniques
  • Testing and physical modeling
  • Numerical modeling

Published Papers (4 papers)

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Research

13 pages, 671 KiB  
Article
The Historical and Cultural Value of RC Constructions and the Main Critical Issues for Rehabilitation
by Marco Vona and Benedetto Manganelli
Infrastructures 2022, 7(3), 35; https://0-doi-org.brum.beds.ac.uk/10.3390/infrastructures7030035 - 06 Mar 2022
Cited by 1 | Viewed by 2353
Abstract
In recent years, the preservation strategies of cultural heritage have become an element of considerable importance. Unfortunately, research has often been conducted in an excessively mono-sectoral or disaggregated manner. Moreover, there is a significant number of reinforce concrete (RC) buildings and engineering works [...] Read more.
In recent years, the preservation strategies of cultural heritage have become an element of considerable importance. Unfortunately, research has often been conducted in an excessively mono-sectoral or disaggregated manner. Moreover, there is a significant number of reinforce concrete (RC) buildings and engineering works that are of historical interest and play a key role during the earthquakes. An urban center, its historical structures and infrastructures or single buildings, if well managed, preserved, protected, recovered and enhanced can represent an excellent source of income and induce a considerable economic development in the neighboring areas. On the other hand, a lack of value appreciation and/or incorrect management represent a significant economic loss in the long-term, but an immediate loss after earthquakes. In this work, the historical and cultural value of these RC structures and infrastructures is discussed and the main critical issues are identified, outlining the fundamental requirements for conservation. Full article
(This article belongs to the Special Issue Structural Rehabilitation, Retrofitting and Strengthening)
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15 pages, 5009 KiB  
Article
Effect of Chases with Renovation Techniques on the Load Carrying Capacity of Masonry Walls
by Adnan Al-Sibahy and Rodger Edwards
Infrastructures 2021, 6(11), 160; https://0-doi-org.brum.beds.ac.uk/10.3390/infrastructures6110160 - 09 Nov 2021
Cited by 1 | Viewed by 2483
Abstract
Infrastructure through the masonry walls (for example, wiring and piping works) are usually installed using chases in different directions. Introducing these chases in a newly built wall will affect its overall load carrying capacity. However, there has thus far been very limited research [...] Read more.
Infrastructure through the masonry walls (for example, wiring and piping works) are usually installed using chases in different directions. Introducing these chases in a newly built wall will affect its overall load carrying capacity. However, there has thus far been very limited research into the effects of chases on the response and load carrying capacity of walls. This study has been undertaken to evaluate the structural behaviour of new masonry walls having chases in both horizontal and vertical directions and subjected to compression load throughout an extensive experimental programme. In addition, two renovation techniques have been proposed to infill the chases created in small scale walls (wallettes). The first technique involved the use of plastic wire mesh and cement mortar, while the second incorporated using galvanized steel channel together with the plastic wire mesh and cement mortar. Furthermore, a reference case of wallette without chases has been considered to enable reasonable comparisons to check the effect of the chases and the efficiency of the proposed renovation techniques. The outcomes of this study were used to modify the design equations proposed in the relevant codes of practice. The obtained results showed a notable reduction in the load carrying capacity of the masonry wall due to the introduction of the chases with a reduction percentage of 29% compared to the masonry wall without chase. The percentage decrease depends on the depth of the chase and the inclination angle of the load flow. The walls with horizontal chases exhibited more reduction in the load carrying capacity compared to those with vertical chases. The adopted renovation techniques using galvanized steel channel and/or plastic wire mesh with cement mortar recovered 55% and 93% of the lost load carrying capacity due to the presence of the chase and the failure was due to the de-bonded phenomena of the infill materials. Suitable factors of safety have been proposed to be incorporated in the compressive strength and modulus of elasticity formulas of the masonry walls of the BS EN codes. Full article
(This article belongs to the Special Issue Structural Rehabilitation, Retrofitting and Strengthening)
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13 pages, 1635 KiB  
Article
A Resilience-Based Model for the Seismic Assessment of the Functionality of Road Networks Affected by Bridge Damage and Restoration
by Alessandro Rasulo, Angelo Pelle, Bruno Briseghella and Camillo Nuti
Infrastructures 2021, 6(8), 112; https://0-doi-org.brum.beds.ac.uk/10.3390/infrastructures6080112 - 12 Aug 2021
Cited by 10 | Viewed by 2531
Abstract
Road network functionality after an earthquake is a crucial aspect for an already struck community. In particular, bridges are susceptible to earthquake-induced damages and to lengthy restoration works. This may lead to severe and unexpected disruption of traffic. In this paper, a model [...] Read more.
Road network functionality after an earthquake is a crucial aspect for an already struck community. In particular, bridges are susceptible to earthquake-induced damages and to lengthy restoration works. This may lead to severe and unexpected disruption of traffic. In this paper, a model for the assessment of the seismic resilience of a road network is presented. The proposed model permits us to evaluate the earthquake-induced perturbations to the functionality of a network in terms of transportation capacities, traffic congestion, and travel times due to bridge damages and subsequent restoration interventions. The evolution over time of the functionality of the network is studied by means of a multi-stage approach describing the evolution of the situation in terms of reducing the normal pre-earthquakes transportation capacities. The methodology has been illustrated with reference to a hypothetical case study, a road network composed of 14 nodes and 31 links. Full article
(This article belongs to the Special Issue Structural Rehabilitation, Retrofitting and Strengthening)
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19 pages, 1861 KiB  
Article
Sensitivity Assessment of the Seismic Response of a Masonry Palace via Non-Linear Static Analysis: A Case Study in L’Aquila (Italy)
by Ilaria Capanna, Angelo Aloisio, Franco Di Fabio and Massimo Fragiacomo
Infrastructures 2021, 6(1), 8; https://0-doi-org.brum.beds.ac.uk/10.3390/infrastructures6010008 - 08 Jan 2021
Cited by 16 | Viewed by 2118
Abstract
The city of L’Aquila (Italy) includes a significant amount of masonry palaces erected from the middle of the 13th century up to the first half of the 20th century. This paper focuses on the seismic response of a masonry palace built during the [...] Read more.
The city of L’Aquila (Italy) includes a significant amount of masonry palaces erected from the middle of the 13th century up to the first half of the 20th century. This paper focuses on the seismic response of a masonry palace built during the first half of the 20th century and characterized by regularity in plan and elevation. The authors investigate the seismic response by varying a suite of modelling parameters that express the actual scatter of the mechanical properties typical of the masonry palaces erected in L’Aquila. The authors discuss the seismic performance exhibited by this building during the 2009 earthquake. Then, they assess the sensitivity of the selected building’s seismic performance via non-linear static analysis to the mechanical properties of masonry, the in-plane stiffness of the floors, and the mechanical resistance of the spandrels. The parametric analysis shows that the three variables markedly affect the shear resistance, the ultimate displacement, and the behavior factors. The fragility functions were then estimated from the results of non-linear static analysis. A significant scatter of the probability of collapse for the considered limit states reveals the limitations of typological approaches for masonry palaces. Full article
(This article belongs to the Special Issue Structural Rehabilitation, Retrofitting and Strengthening)
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