Fast Falling Weight Deflectometer Method for Condition Assessment of RC Bridges

Coni, Mauro; Mistretta, Fausto; Stochino, Flavio; Rombi, James; Sassu, Mauro; Puppio, Mario Lucio

doi:10.3390/app11041743

Cited by 16 publications

(6 citation statements)

References 36 publications

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“…[12] , including information from laser scanners [13], Non-Destructive Techniques (NDT) [14] - [15] and visual inspection [16].…”

Section: Original Article Abstractmentioning

confidence: 99%

A proposal for low cost condition assessment method for existing RC bridges

Stochino,

Mistretta,

Sassu

et al. 2023

ce papers

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Aging infrastructures require huge budgets to preserve their functionality and the lack of effective maintenance leads to increasing deterioration and therefore higher repair costs. For these reasons, assessing the condition of infrastructures becomes mandatory, with particular attention to the ones still in service even when their life limit has been exceeded. In particular, this problem is really important in Countries, like Italy, in which there are several operating bridges at the end of their service life. In this framework, many companies responsible for the management of road networks have turned their interest towards Bridge Management Systems (BMS). This paper presents a fast and low‐cost method for condition rating of reinforced concrete bridges. The proposal is based on visual inspection and non‐destructive testing. A specific parameter is designed to take into account the mechanical degradation of materials and the damage location at the structural sub‐component level. Some benchmark case studies have been discussed in order to compare the proposed method with other approaches available in literature.

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“…[12] , including information from laser scanners [13], Non-Destructive Techniques (NDT) [14] - [15] and visual inspection [16].…”

Section: Original Article Abstractmentioning

confidence: 99%

A proposal for low cost condition assessment method for existing RC bridges

Stochino,

Mistretta,

Sassu

et al. 2023

ce papers

Self Cite

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“…To this purpose, Benkelman Beam Deflectometers, lightweight deflectometers [8], and the Falling Weight Deflectometers (FWD) [9,10] were mainly used. Recording vibrations from sensors bonded to or embedded within the pavement was also exploited to derive performance parameters of road structures under different climate and traffic conditions [11,12,13]. Crack propagation and fatigue damage were monitored by means of in situ measures [14] taken through piezoelectric sensors, which are in fact typically used to detect damage in structural components [15].…”

Section: Introductionmentioning

confidence: 99%

An experimental approach for in-situ characterization of dynamic dissipative properties of road pavements

Loi,

Marongiu,

Rombi

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

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The dissipative properties of road pavements may have beneficial effects to reduce vehicle vibrations, traffic noise, vehicles-structure dynamic interaction, and degradation of pavement materials. Assessing the dissipative capacity and the damping properties of road pavements is, therefore, of critical importance. Such assessment has been mainly conducted in recent years by laboratory-scale dynamic experiments, while little effort has been devoted to in-situ tests. The latter are, in fact, cumbersome for practical reasons and typically require a more advanced data analysis when highly coupled modes of vibration are involved. Due to the heterogeneity of the road structure, classical methods are not capable of accurately estimating the road damping properties. The present study proposes an alternative experimental approach based on recording signals from accelerometers embedded in the road, which is impacted by an instrumented hammer. The data are analyzed both in the frequency and in the time domains through the combined use of stabilization diagrams and energy decay tools. Multi-mode fitting algorithms are employed to construct stabilization diagrams for the identification of resonance frequencies, while energy decay curves allow for a robust evaluation of the damping values at the identified frequencies. The effectiveness of the approach was assessed on an asphalt road structure.

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“…An important aspect that affects the seismic performance of existing RC bridges is the presence of corrosion in the structural elements due to carbonation phenomenon which can lead to a reduction of the piers steel reinforcements area [9][10][11][12]. Several Italian RC viaducts were built around 1970's and, consequently, require a series of maintenance interventions to guarantee an adequate safety level [13][14][15]. It is important to highlight that these structures were mainly designed to resist to vertical loads and only limited horizontal actions.…”

Section: Introductionmentioning

confidence: 99%