scholarly journals Structural health assessment of Puente del Inca natural monument using the integration of instruments and technologies

2020 ◽  
Vol 46 (2) ◽  
pp. 447-476
Author(s):  
E. Lannutti ◽  
M.G. Lenzano ◽  
J. Barón ◽  
S. Moragues ◽  
L. Lenzano
Keyword(s):  
Thermal Water ◽  
Dynamic Balance ◽  
Health Assessment ◽  
Satellite System ◽  
Ambient Vibration ◽  
Health State ◽  
Structural Deterioration ◽  
Ambient Vibration Testing ◽  
Geological Formation ◽  
Natural Monument

Puente del Inca is a natural monument standing over the Cuevas river in Mendoza, Argentina. The bridge currently exhibits structural deterioration due to natural and anthropic factors. This article seeks to offer a contribution to the conservation and restoration works of Puente del Inca by integrating instruments and technologies that allow the assessment of the health state of the natural bridge. The study relied on visual inspection, accretion-erosion rate measurements, hydrothermal flow characterization, ground-penetrating radar, soil dielectric sensor, Global Navigation Satellite System, laboratory testing, Structure from Motion, the Finite Element Method and ambient vibration testing. The results show that the morphology and health of the natural bridge depend on the dynamic balance between the erosion and the geobiological system intervening in the formation of the travertine constituting the natural bridge. The computational structural modeling demonstrates that there is a controversy between the benefit of irrigating the geological formation with thermal water and the loss of stability of the bridge under saturation conditions. Nevertheless, a continuous monitoring and an efficient administration of thermal water may ensure the deceleration of most of the erosive processes as well as the improvement of the geobiological system health.

Health assessment and ambient vibration testing of the “Ponte delle Torri” of Spoleto during the 2016–2017 Central Italy seismic sequence

2018 ◽  
Vol 8 (2) ◽  
pp. 199-216 ◽  
Author(s):  
Ivan Roselli ◽  
Marialaura Malena ◽  
Marialuisa Mongelli ◽  
Nicola Cavalagli ◽  
Massimiliano Gioffrè ◽  
...  
Keyword(s):  
Central Italy ◽  
Health Assessment ◽  
Ambient Vibration ◽  
Seismic Sequence ◽  
Vibration Testing ◽  
Ambient Vibration Testing

scholarly journals Sensor Placement Strategies for the Seismic Monitoring of Complex Vaulted Structures of the Modern Architectural Heritage

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Erica Lenticchia ◽  
Rosario Ceravolo ◽  
Paola Antonaci
Keyword(s):  
Sensor Placement ◽  
Seismic Damage ◽  
Operating Conditions ◽  
Ambient Vibration ◽  
Health State ◽  
Architectural Heritage ◽  
Optimal Sensor Placement ◽  
Damage Scenario ◽  
Restoration Planning ◽  
Ambient Vibration Testing

Effective diagnostic and monitoring systems are highly needed in the building and infrastructure sector, to provide a comprehensive assessment of the structural health state and improve the maintenance and restoration planning. Vibration-based techniques, and especially ambient vibration testing, have proved to be particularly suitable for both periodic and continuous monitoring of existing structures. As a general requirement, permanent systems must include a sensing network able to run a continuous surveillance and provide reliable analyses based on different information sources. The variability in the environmental and operating conditions needs to be accounted for in designing such a sensor network, but it is mainly the structural typology that governs the optimal sensor placement strategy. Architectural heritage consists of a great variety of buildings and monuments that significantly differ from each other in terms of typology, historic period, construction techniques, and materials. In this paper, the main issues regarding seismic protection and analysis of the modern architectural heritage are introduced and applied to one of the vaulted structures built by Pier Luigi Nervi in the Turin Exhibition Centre. The importance of attaining an adequate level of knowledge in historic structures is also highlighted. After an overview of the Turin Exhibition Centre and its construction innovations, this paper focuses on Hall B, describing the structural design conceived by Pier Luigi Nervi. A seismic assessment of the structures of Hall B is then presented, considering the potential seismic damage to nonstructural elements. Subsequently, the application of an optimal sensor placement strategy is described with reference to two different scenarios: the first one corresponding to the undamaged structure and the second one that considers a possible damage to the infill walls. Finally, a novel damage-scenario-driven sensor placement strategy based on a combination of the two above mentioned is proposed and discussed. One of the major conclusions drawn from the analyses performed is that nonstructural elements undergoing seismic damage or degradation may significantly affect the global dynamic response and consequently the optimal sensing configurations.

Damage identification on bridges using ambient vibration testing

2016 ◽  
pp. 283-290
Author(s):  
N.L.D. Khoa ◽  
M. Makki Alamdari ◽  
P. Runcie ◽  
V.V. Nguyen
Keyword(s):  
Damage Identification ◽  
Ambient Vibration ◽  
Vibration Testing ◽  
Ambient Vibration Testing

scholarly journals Health state of the citizens of Nothern Kosovska Mitrovica

2010 ◽  
Vol 138 (11-12) ◽  
pp. 746-751
Author(s):  
Momcilo Mirkovic ◽  
Snezana Simic ◽  
Jelena Marinkovic ◽  
Sladjana Djuric
Keyword(s):  
Health Survey ◽  
Health Assessment ◽  
Population Level ◽  
Cross Sectional Study ◽  
Health Condition ◽  
Health State ◽  
Cross Sectional ◽  
Significance Level ◽  
Self Rated Health ◽  
Significant Difference

Introduction. For health assessment, beside the data of routine health statistics, it is necessary to include and data obtained by a health survey of the citizens. Objective. The aim of this study was to establish how northern Kosovska Mitrovica adults assess their health and which diseases are most common among the population, as well as to investigate differences in relation to demographic and socioeconomic characteristics, the characteristics of social interaction and health behavior and habits. Methods. The research was conducted as a cross-sectional study conducted on the representative sample of adult citizens in northern Kosovska Mitrovica in 2006. Two hundred-eighteen respondents were included in the survey. In the research we used a questionnaire identical to the Health Survey conducted in Serbia in 2006. The significance of differences in responses about self-rated health and chronic diseases in relation to the characteristics of respondents? responses were determined by X2-test with the significance level of 0.05. Results. Over half of the respondents (54.7%) assessed their health condition as good or very good. There was a significant difference in self-rated health in relation to the respondents? age (?2=202.036; p=0.000), education (?2=72.412; p=0.000), social support (?2=12.416; p=0.015), smoking (?2=11.675; p=0.020) and physical activity (?2=61.842; p=0.000). The leading health problems among the respondents were high blood pressure, rheumatologic diseases of joints, ulcer of the duodenal or gastric ulcer, gall bladder disease and high blood fat. Conclusion. Adult residents of northern Kosovska Mitrovica assessed their health as better than the residents of Serbia without Kosovo and Metohia. The diseases in which stress plays the major role among etiological factors are in the leading position. The obtained data on the population level of specific areas represent the basis in the planning of health education and health promotion activities.

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