Integrated non-destructive assessment of relevant structural elements of an Italian heritage site: the Carthusian monastery of Trisulti

Rainieri, Carlo; Marra, Adriana; Rainieri, G.; Gargaro, Danilo; Pepe, Massimiliano; Fabbrocino, Giovanni

doi:10.1088/1742-6596/628/1/012018

Cited by 14 publications

(8 citation statements)

References 3 publications

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“…IR thermography has been used for more than 25 years to detect subjacent defects in buildings, such as fissures, cracks and humidity, as these features cause contrasting thermal responses. In cultural heritage, the most usual application of IR thermography is moisture location in historic buildings; other common applications in historic constructions are the assessment of previous conservation treatments such as cleanings, consolidations and restorations; and the identification of hidden structures behind the painting of the walls . Frescos have been also widely studied with IR thermography to detect previous interventions, hidden damages and, in some cases, to discover the cause of their deterioration (humidity, unknown structures in the wall, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…In cultural heritage, the most usual application of IR thermography is moisture location in historic buildings; other common applications in historic constructions are the assessment of previous conservation treatments such as cleanings, consolidations and restorations; and the identification of hidden structures behind the painting of the walls. [3][4][5][6][7][8][9][10][11][12][13][14][15][16] Frescos have been also widely studied with IR thermography to detect previous interventions, hidden damages and, in some cases, to discover the cause of their deterioration (humidity, unknown structures in the wall, etc.). [17][18][19][20][21][22][23][24] In case of mosaics, IR thermography permits to evaluate the mortar and the suitability of the consolidative materials and treatments.…”

Section: Introductionmentioning

confidence: 99%

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Comparative assessment of stained‐glass windows materials by infrared thermography

Palomar

Agua

Gómez-Heras

2018

Int J of Appl Glass Sci

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This paper reports the analyses of infrared thermography images of two stained‐glass windows with the objective of the in situ characterization of this type of artworks. The analyses were carried out by active thermography. The observations revealed that glasses absorbed the long‐wave IR radiation emitted by the halogen lamps and their apparent surface temperature progressively increased. After switching the spotlight off, they experienced a progressive decrease in temperature. Silver stained glasses presented the same thermographic behavior than uncolored glasses because silver nanoparticles were too small or the yellow layer was too thin to produce a different response than the base glass with the IR radiation. The apparent surface temperature of enamels and grisailles depended on their thickness and color. Lead cames maintained an almost constant surface apparent temperature, except those painted that behave in a similar way than enamels. Metallic tin‐lead welds experienced the most important variation in the surface apparent temperature in reflection mode due to the energy reflected by the surface of the weld. Glass defects such as big bubbles were also observed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative assessment of stained‐glass windows materials by infrared thermography

Palomar

Agua

Gómez-Heras

2018

Int J of Appl Glass Sci

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“…Lagomarsino and Calderini (2005) found in the ties of three buildings values in the 32-129 MPa range, which would involve a prestress normalised over average yield strength in Calderini et al (2016) in the range 0.15-0.59. Rainieri et al (2015) found in another building normalised prestress in the range 0.16-0.23. Consequently, for the parametric analysis a reasonable range 0.0-0.6 was assumed, comprising the lack of any pre-stress as well as rather large forces at wall anchor.…”

Section: Role Of Tie Characteristicsmentioning

confidence: 85%

Dynamic One-Sided Out-Of-Plane Behavior of Unreinforced-Masonry Wall Restrained by Elasto-Plastic Tie-Rods

AlShawa

Liberatore

Sorrentino

2019

International Journal of Architectural Heritage

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Past earthquakes have shown the high vulnerability of existing masonry buildings, particularly to out-of-plane local collapse mechanisms. Such mechanisms can be prevented if façades are restrained by tie rods improving the connections to perpendiculars walls. Whereas in the past only static models have been proposed, herein the non-linear equation of motion of a monolithic wall restrained by a tie rod is presented. The façade, resting on a foundation and adjacent to transverse walls, rotates only around one base pivot and has one degree of freedom. Its thickness is explicitly accounted for and the tie rod is modelled as a linear elastic-perfectly plastic spring, with limited displacement capacity. The model is used to investigate the response to variations of wall geometry (height/thickness ratio, thickness), tie rod features (vertical position, length, prestress level), material characteristics (elastic modulus, ultimate elongation, yield strength) typical of historical iron. The most relevant parameter is the steel strength, whereas other characteristics play minor roles allowing to recommend reduced values for pre-tensioning forces. The force-based procedure customary in Italy for tie design is reasonably safe and involves protection also against collapse, although probably not enough as desirable. KEYWORDS rocking, historical iron, linear static procedure, prestress, steel, tie bar, ultimate elongation RUNNING HEAD Dynamic one-sided out-of-plane behaviour of unreinforced-masonry wall restrained by elastoplastic tie rods 1 INTRODUCTION Earthquakes have shown that unreinforced-masonry structures frequently present a higher vulnerability than reinforced-concrete structures (Zucconi, Ferlito, and Sorrentino 2017; Zucconi, Sorrentino, and Ferlito 2017), with out-of-plane loading being particularly dangerous if connections of façades to transversal structures are inadequate (Bruneau 1994; Brando et al. 2018; Moon et al. 2014; Mendes et al. 2017). Metal tie rods are among the most ancient details adopted to improve earthquake performance in unreinforced masonry buildings (Figure 1a), and their use is documented in several countries, such as Haiti (

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“…To accomplish this task, several in-situ tests were conducted along with the finite element analysis. As heritage and monuments are the types of buildings that require special attention during every intervention, understanding the state of the building has great importance [27][28][29]. To this end, field tests and investigations are of the utmost priority as reconstruction may not be a plausible solution in most of the cases.…”

Section: Qualitative Evaluationmentioning

confidence: 99%

“…In the case study building, the height to width ratio of brick units is less than 0.75; slenderness ratio of walls is below 6; and no portion of the wall has an area lower than 0.2 m 2 ; thus, per the IS 1905:1987 [31] recommendations, the permissible stress in masonry for design equals basic compressive strength of masonry, which is one fourth of the average compressive strength of masonry (1 MPa). Several studies (e.g., [27][28][29]) highlight the necessity of non-destructive tests and material identification in order to predict the actual behavior of complex aggregate buildings and historical constructions. Thus, laboratory tests are required to characterize such properties.…”

Section: Analytical Modelingmentioning

confidence: 99%

Seismic Strengthening of the Bagh Durbar Heritage Building in Kathmandu Following the Gorkha Earthquake Sequence

Adhikari¹,

Jha²,

Gautam

et al. 2019

Buildings

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The so-called Greco-Roman monuments, also known as neoclassical monuments, in Nepal represent unique construction systems. Although they are not native to Nepal, they are icons of the early 19th century in the Kathmandu valley. As such structures are located within the heritage sites and historical centers, preservation of Greco-Roman monuments is necessary. Since many buildings are in operation and accommodate public and critical functions, their seismic safety has gained attention in recent times, especially after the Gorkha earthquake. This paper first presents the background of the Bagh Durbar monument, reports the damage observations, and depicts some repair and retrofitting solutions. Attention is paid to the implementation of the different phases of the structural characterization of the building, the definition of reference material parameters, and finally, the structural analysis made by using finite element models. The aim of the contribution consists of comparison of the adequacy of the finite element model with the field observations and design of retrofitting solutions to assure adequate seismic safety for typical Greco-Roman buildings in Nepal. Thus, this paper sets out to provide rational strengthening solutions compatible with the existing guidelines rather than complex numerical analyses.

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Integrated non-destructive assessment of relevant structural elements of an Italian heritage site: the Carthusian monastery of Trisulti

Cited by 14 publications

References 3 publications

Comparative assessment of stained‐glass windows materials by infrared thermography

Comparative assessment of stained‐glass windows materials by infrared thermography

Dynamic One-Sided Out-Of-Plane Behavior of Unreinforced-Masonry Wall Restrained by Elasto-Plastic Tie-Rods

Seismic Strengthening of the Bagh Durbar Heritage Building in Kathmandu Following the Gorkha Earthquake Sequence

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