Effectiveness of dampers in controlling a vibration problem near a highway bridge

Fukada, Saiji; Usui, Kimihisa; Yoshimura, Teizo; Okada, Toru; Hama, Hirokazu; Kishi, Takashi

doi:10.1007/s13349-012-0022-3

Cited by 6 publications

(6 citation statements)

References 11 publications

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“…A viscoelastic damper [15] consists of three plates and a viscoelastic material. One plate is installed in the lower flange of the girder, and it is sandwiched by the two plates cantilevered from the pier.…”

Section: Viscoelastic Dampermentioning

confidence: 99%

Investigation of Infrasound Radiated from Highway Bridge Owing to Moving Truck

Fukada¹,

Okada²,

Hama³

et al. 2013

JEP

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Several complaints arose from houses near an object bridge about rattling sounds caused by infrasound, a low-frequency noise in the 0 -20 Hz frequency range. In Japan, conventional trucks with a rear leaf suspension have vibration frequencies of about 3.0 Hz; furthermore, their tire spring vibration frequency is 10 -20 Hz. Infrasound is radiated from the bridge owing to the truck's suspension spring vibration and/or tire spring vibration. In this study, the bridge vibrations were investigated using test trucks or conventional trucks to determine the cause of rattling sounds. It was found that the truck's spring vibration caused excessive bending vibration in the object bridge; this in turn was transmitted to nearby houses as infrasound. Various preventive measures for infrasound were then considered, and their effectiveness was investigated through a simulation of the dynamic response using a running truck. The difference between each measure's effectiveness as obtained by a comparison with each simulation's result provided a clear picture about the infrasound reduction methods in consideration of both construction cost and working difficulty.

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Section: Viscoelastic Dampermentioning

confidence: 99%

Investigation of Infrasound Radiated from Highway Bridge Owing to Moving Truck

Fukada¹,

Okada²,

Hama³

et al. 2013

JEP

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“…When the infrasound problem induced by the bridge vibration modes with the same phase (Fig. 2(a)) occurs, we propose installing a viscoelastic damper at the end of the girders [17], as shown in Fig. 14, to suppress the vibration mode.…”

Section: For the Bridge Vibration Modes With The Same Phasementioning

confidence: 99%

“…In our past studies, experiments were conducted for the concrete bridge with short spans, aiming to clarify the relation between the infrasound and the bridge vibration modes [8][9]. According to the experimental results, it was clear that the concrete bridge with short spans had the frequencies close to the frequency of the tire spring vibration (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). It was also observed that the infrasound problem probably occurred due to the resonance between the concrete bridge vibration and the tire spring vibration (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20).…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the continuous steel bridge with medium-length spans has the frequencies close to the frequencies of the trucks' leaf suspension spring vibration (3 Hz) and the tire spring vibration (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). Experiments on continuous steel bridge with mediumlength spans were conducted to address the relationship between the infrasound and bridge vibration modes due to the vibration of the moving heavy trucks.…”

Section: Introductionmentioning

confidence: 99%

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Relation of the infrasound characteristics and the continuous steel bridge vibration modes generated by the vibration of moving heavy trucks

Fukada

Hama²,

Usui³

2012

J. Mod. Transport.

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As heavy trucks pass over highway bridges, bridge vibration occurs and generates infrasound. General trucks in Japan with rear leaf suspension have whole body vibration (suspension spring vibration) frequencies of about 3 Hz. Also, the frequencies of the wheel vibration (tire spring vibration) are about 10-20 Hz. The continuous steel highway bridges with middle span length have vibration modes with the same phase in each span at the frequencies of about 3 Hz and also have those with the secondary mode shape at the frequencies of about 10-20 Hz. Truck vibrations and bridge vibrations are closely related. In this work, vibration tests are conducted using a heavy test truck for two cases of infrasound complaints in order to investigate the relation between the continuous steel bridge vibration modes generated by the vibration of moving heavy trucks and its infrasound characteristics. As a result of the examination, two types of bridge vibration modes are caused by the vibrations of a moving heavy truck. Moreover, the bending vibration modes with the same phase in each span have the most powerful infrasound pressure, since each span vibrates with the same phase. Two countermeasures, including viscoelastic damper at the end of the girders and extended deck method, are proposed to reduce the amplitude of bridge vibration and its infrasound.

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“…The main task of these seismic measurements is to determine the maximum vibration velocities or acceleration, waveform parameters and the frequency spectrum of the measured signals. The data thus obtained serves primarily as input for civil engineers, based on which they can establish and specify influences on the existing technical condition of constructions, their possible susceptibility to damage followed by recommendations of appropriate measures against vibrations where required [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Fiber-Optic Interferometric Sensor for Dynamic Impact Measurement of Transport Trucks

Stolárik

Nedoma

2019

JERA

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Ground vibrations are commonly observed by using a standard seismic station equipped with speed seismometers or acceleration seismometers. The seismometers include three mechanical vibrating systems (sensors) and the primary output is the wave pattern of recording velocity or acceleration of the material point oscillation. An alternative new method how it is possible to realize seismic measurements is using of the fiber-optic interferometric sensors. These interferometers are well-known for their ability to make high-precision measurements of optical path difference or changes that may be induced by a refractive index change in the interferometer or a physical displacement. The paper presents a comparison of the results of the standard seismic measurement by using seismic station and of the fiber-optic interferometric sensor. As a source of dynamic load, truck transport was chosen. When trucks passing through unevenness on the road (due to the road damage, the transition area of the bridge etc.), it generates vibrations that are transmitted to the subsoil and can adversely affect the surrounding building objects. Data comparison of the subsoil dynamic response obtained during both approaches of measurements is present in the amplitude and primary in the frequency domain.

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Effectiveness of dampers in controlling a vibration problem near a highway bridge

Cited by 6 publications

References 11 publications

Investigation of Infrasound Radiated from Highway Bridge Owing to Moving Truck

Investigation of Infrasound Radiated from Highway Bridge Owing to Moving Truck

Relation of the infrasound characteristics and the continuous steel bridge vibration modes generated by the vibration of moving heavy trucks

Fiber-Optic Interferometric Sensor for Dynamic Impact Measurement of Transport Trucks

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