Fast Falling Weight Deflectometer Method for Condition Assessment of RC Bridges
| Autor: | Flavio Stochino, Fausto Mistretta, Mauro Coni, James Rombi, Mario Lucio Puppio, Mauro Sassu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Computer science
0211 other engineering and technologies 020101 civil engineering 02 engineering and technology non-destructive test lcsh:Technology Bridge (interpersonal) 0201 civil engineering lcsh:Chemistry Nondestructive testing 021105 building & construction medicine bridge health monitoring General Materials Science lcsh:QH301-705.5 Instrumentation Annual average daily traffic Fast Falling Weight Deflectometer (Fast-FWD) Fluid Flow and Transfer Processes lcsh:T business.industry Process Chemistry and Technology General Engineering Stiffness structural response Structural engineering lcsh:QC1-999 Finite element method Computer Science Applications Falling weight deflectometer Information engineering lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Force dynamics finite element modelling medicine.symptom lcsh:Engineering (General). Civil engineering (General) business lcsh:Physics |
| Zdroj: | Applied Sciences Volume 11 Issue 4 Applied Sciences, Vol 11, Iss 1743, p 1743 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11041743 |
| Popis: | In this paper, the use of Fast Falling Weight Deflectometer (Fast-FWD) is analyzed as a non-destructive and quick test procedure to evaluate the efficiency of short-span bridges. The Fast-FWD is an instrument that can produce a broadband dynamic force up to an impact value of 120 KN: The impact is constant and replicable, providing accurate action measures of bridge stiffness in a truly short period (30 ms). In this paper, a single-span reinforced concrete bridge is investigated, using the Fast-FWD. The considered bridge, approximately 12.0 m long and 15.5 m wide, was in critical condition. The bridge is in a suburban principal road near to the City of Cagliari in Sardinia (Italy), with an Annual Average Daily Traffic of 13,500 vehicles/day, and was suddenly closed, creating serious problems for urban mobility. In these conditions, the investigation through other standard techniques is time-consuming and labor intensive. For this reason, it is important to introduce methods that can be rapid, accurate and cost-efficient. In this paper, bridge stiffness values obtained during the in situ experimental campaign were compared with finite element models values. The Fast-FWD has the potential to provide engineering information that can help us to better understand bridge condition, in a rapid and cost-effective procedure. |
| Databáze: | OpenAIRE |
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