Potential of terrestrial laserscanning in load test measurements of bridges

Berenyi, Attila; Lovas, Tamás; Barsi, Árpád; Dunai, László

doi:10.3311/pp.ci.2009-1.04

Cited by 20 publications

(10 citation statements)

References 1 publication

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“…After survey completion the resulted files were exported to Autodesk ReCap. The acquired data can be exported to another software, such as FARO SCENE [14,15]. The main purpose of such software is to combine files of scans, to remove noises, and to trim the resulted point cloud [16].…”

Section: Resultsmentioning

confidence: 99%

Monitoring of Technogenic Destructions of Oil and Gas Facili-ties using 3D Laser Scanning

Gubanova¹,

Lovchikov²,

Mironchev³

et al. 2018

IJET

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This article discusses application of 3D laser scanning aimed at assessment of consequences of destructions resulted from fires and other technogenic disasters of oil and gas facilities. Deformations of structures and equipment as a consequence of emergencies sometimes cannot be detected visually. It is required to apply modern instrumentation to determine deviations from designed parameters. In addition, after disasters it is required to determine the scope of loss and faults of equipment. Application of 3D laser scanning makes it possible to estimate both availability of buildings and equipment for further operation and the scope of destructions at complex engineering facilities of oil and gas industry. Laser scanning makes it possible to reduce significantly time required for examination and data processing in comparison with other measurement methods.

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Section: Resultsmentioning

confidence: 99%

Monitoring of Technogenic Destructions of Oil and Gas Facili-ties using 3D Laser Scanning

Gubanova¹,

Lovchikov²,

Mironchev³

et al. 2018

IJET

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“…The angular resolution of the measurement device has high significance especially for the identification of details, e.g. edges in the case of big distances [10][11]. In the analysed a) b) Fig.…”

Section: Tachymetry Methodsmentioning

confidence: 99%

Dynamic testing of railway metal culvert using geodetic methods

Bęben

Anigacz

2017

MATEC Web Conf.

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The objective of the study was to compare and assess suitability of two methods of geodetic measurements (tachymetry i interferometry) used to determine changes of the geometric condition of building and engineering structures. The paper presents the selected results of experimental tests under dynamic loads that were conducted on a railway metal culvert. The dynamic loads were caused by the passages of various trains. The measurements were made for all trains which had been running over the culvert during a 24 hour period. Advantages and disadvantages of both applied methods were characterized. The disadvantage of the tachymetry method is the discreteness of measurements and the lack of the possibility of verifying the results after finishing the field works. The tachymetry measurements were conducted using precise tachymetry manufactured by Leica TC2002. The IBIS microwave coherent radar was used in the interferometry method. Moreover, a special microwave horns IBIS-H23 type with a maximum gain of 23 dBi were used as the interferometer antennas (transmitting and receiving). Conclusions drawn from the tests can be helpful in the measurements of such culverts.

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“…Therefore, using these methods can involve accessibility problems and traffic disruption. Recently, non-contact sensing systems like laser scanning and interferometric radar have been proposed as a measurement instrument in large structures, such as bridges, towers, and dams [24][25][26][27][28][29]. One such technique uses laser vibrometer for remote measurement of vibration in an attempt to detect damages indicated by variation in the dynamic characteristics of the structures.…”

Section: Introductionmentioning

confidence: 99%

Novel Approaches for Fracture Detection in Steel Girder Bridges

Abedin

Mehrabi

2019

Infrastructures

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The bottom flanges of steel plate girder bridges can be considered fracture-critical elements depending on the number of girders and bridge configuration. For such cases, it is required that inspection of these bridges be carried out using costly “arms-length” approach. New techniques in structural health monitoring (SHM) that use non-contact sensors and self-powered wireless sensors present alternative approach for inspection. Application of such techniques would allow timely detection and application of repair and strengthening, in other word, providing for more resilient bridges. This paper investigates the feasibility of using a handful of self-powered wireless or non-contact sensors for continuous or periodic monitoring and detection of fracture in steel plate girder bridges. To validate this concept, vibration measurements were performed on an actual bridge in the field, and detailed finite element analyses were carried out on a multi-girder bridge. The records obtained show that vibration amplitude was significantly increased for fractured girder, and a distinct pattern of strain variation was registered in the vicinity of fracture, all of which can be detected effectively with relevant sensors. Moreover, the amplitude and frequency of the vibration was shown to be significant enough for providing the required power for typical sensor(s).

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Potential of terrestrial laserscanning in load test measurements of bridges

Cited by 20 publications

References 1 publication

Monitoring of Technogenic Destructions of Oil and Gas Facili-ties using 3D Laser Scanning

Monitoring of Technogenic Destructions of Oil and Gas Facili-ties using 3D Laser Scanning

Dynamic testing of railway metal culvert using geodetic methods

Novel Approaches for Fracture Detection in Steel Girder Bridges

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