Verringerung der Versagenswahrscheinlichkeit von Brücken durch experimentelle Traglastversuche

Proske, Dirk; Sýkora, Milan; Gutermann, Marc

doi:10.1002/bate.201900117

Cited by 9 publications

(3 citation statements)

References 21 publications

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“…Structural Health Monitoring (SHM) and Non-Destructive Evaluation (NDE) have become increasingly used in practice to enhance periodic inspections of engineering structures with continuous measurement data [1][2][3][4][5]. Accelerometers can be used to determine the dynamic properties of these structures (e.g., eigenfrequencies, modal eigenmodes, and operating mode shapes) to detect structural damage [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Transfer Behavior and Environmental Influences of Low-Noise Integrated Electronic Piezoelectric Acceleration Sensors

Bartels,

Xu,

Kang

et al. 2024

Metrology

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Acceleration sensors are vital for assessing engineering structures by measuring properties like natural frequencies. In practice, engineering structures often have low natural frequencies and face harsh environmental conditions. Understanding sensor behavior on such structures is crucial for reliable measurements. The research focus is on understanding the behavior of acceleration sensors in harsh environmental conditions within the low-frequency acceleration range. The main question is how to distinguish sensor behavior from structural influences to minimize errors in assessing engineering structure conditions. To investigate this, the sensors are tested using a long-stroke calibration unit under varying temperature and humidity conditions. Additionally, a mini-monitoring system configured with four IEPE sensors is applied to a small-scale support structure within a climate chamber. For the evaluation, a signal-energy approach is employed to distinguish sensor behavior from structural behavior. The findings show that IEPE sensors display temperature-dependent nonlinear transmission behavior within the low-frequency acceleration range, with humidity having negligible impact. To ensure accurate engineering structure assessment, it is crucial to separate sensor behavior from structural influences using signal energy in the time domain. This study underscores the need to compensate for systematic effects, preventing the underestimation of vibration energy at low temperatures and overestimation at higher temperatures when using IEPE sensors for engineering structure monitoring.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Transfer Behavior and Environmental Influences of Low-Noise Integrated Electronic Piezoelectric Acceleration Sensors

Bartels,

Xu,

Kang

et al. 2024

Metrology

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“…Reliability is the ability of a structure or its member to fulfil the specified requirements during the service lifetime, for which it has been designed. Reliability covers safety, serviceability and durability of a structure [3][4][5][6]. Climatic conditions are defined as the long-term prevailing weather conditions and long-term means the period over one year.…”

Section: Introductionmentioning

confidence: 99%

Measurement of corrosion rates on reinforcement using the field test

Koteš,

Zahuranec,

Prokop

et al. 2023

ce papers

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Reinforcement corrosion is a phenomenon that affects not only the durability and serviceability of the structure itself but the economy of the countries, as well. In many cases, structures and bridges must be repaired or reconstructed as a result of corrosion of the reinforcement. In extreme cases, when maintenance is neglected, it is necessary to completely replace the structures with new ones, even if their planned service lifetime has not been reached ‐ it is not enough to strengthen them or it is economically inefficient. Corrosion of the reinforcement primarily causes a reduction in the cross‐sectional resistance of the load‐bearing elements by reducing the cross‐sectional area of the reinforcement, which means a reduction in the force in the reinforcement that it transmits. For this reason, it is necessary to know the rate of corrosion over time depending on the environment in which the element is located. The paper is focused on the experimental measurements of corrosion losses due to atmospheric corrosion on reinforcement samples using the field test. As a part of experimental measurements, corrosion rates on reinforcements of four diameters (diameters 6, 10, 14, and 25 mm) of steel for reinforcement, grade B 500B, are monitored at measuring stations and bridges in various aggressive environments.

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“…In situ proof load tests are commonly used effective methods of assessing the condition and safety of existing structures [1,2]; for example, historic bridges or ceilings [3,4], roofs, and frames [5], especially in earthquake-prone situations [6]. Proof load tests are necessary also for testing of replicas of historic timber machines, such as medieval cranes, before they are introduced into service on construction sites [7].…”

Section: Introductionmentioning

confidence: 99%

Load Testing of Cultural Heritage Structures and Sculptures: Unconventional Methods for Assessing Safety

Drdácký

Urushadze

2023

Heritage

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The paper presents the results of static and dynamic experimental tests conducted on historical heritage structures and sculptures. In recent years, there was an increasing need to address the behaviour of these types of structures due to several reasons. Diagnosing the actual condition of a historical structure involves not only identifying the cause of a detected defect, but also determining its impact and assessing whether the structure can continue to perform safely. This article utilises unconventional loading methods to generate measurable mechanical responses. In one case, a lifting procedure is employed to study strains in a composite structure, while in another example, the mass and movement of people are used as a form of loading. Proof load tests conducted on a monumental sculpture allowed for the determination of load distribution among its heterogeneous structural components, namely a bronze shell and an iron reinforcing frame. Furthermore, the static and dynamic loading of a ceiling supported by a masonry vault demonstrated its ability to withstand anticipated loads resulting from unconventional use as a temporary exhibition space.

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Verringerung der Versagenswahrscheinlichkeit von Brücken durch experimentelle Traglastversuche

Cited by 9 publications

References 21 publications

Experimental Investigation on the Transfer Behavior and Environmental Influences of Low-Noise Integrated Electronic Piezoelectric Acceleration Sensors

Experimental Investigation on the Transfer Behavior and Environmental Influences of Low-Noise Integrated Electronic Piezoelectric Acceleration Sensors

Measurement of corrosion rates on reinforcement using the field test

Load Testing of Cultural Heritage Structures and Sculptures: Unconventional Methods for Assessing Safety

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