Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Numerical verification of accelerometer-based assessment of hollow-type pretensioned concrete girder
In this paper, a vibration-based damage detection method was employed to assess a hollow-type prestressed concrete (BS12) girder in two different states using its dynamic characteristics. Once, the girder was assessed in as-built condition presenting undamaged sate. Next, the evaluation was carried out after the performance of four-point bending test that caused various cracks in the tension part of the girder. Despite that, change in physical parameter was minor due to high strength materials used in the girder and the cracks appeared were in negligible range. Yet, the method was able to demonstrate a detectable change in modal parameter (notably natural frequency) of the girder which is the function of physical properties. The aim of the study was to validate the preciseness of accelerometer-based method. To this purpose, the test was conducted three times for the initial intact and its following damaged states to have an accurate recorded response of the specimen. The measured data were compared with that acquired numerically using Finite-Element Method (FEM) Midas civil software. This paper concluded that even a minor damage can cause detectable shifts in modal parameters of the structure by presenting the well-matched results of both experimental and numerical methods of pre-damage and post-damage states of the girder.
Numerical verification of accelerometer-based assessment of hollow-type pretensioned concrete girder
In this paper, a vibration-based damage detection method was employed to assess a hollow-type prestressed concrete (BS12) girder in two different states using its dynamic characteristics. Once, the girder was assessed in as-built condition presenting undamaged sate. Next, the evaluation was carried out after the performance of four-point bending test that caused various cracks in the tension part of the girder. Despite that, change in physical parameter was minor due to high strength materials used in the girder and the cracks appeared were in negligible range. Yet, the method was able to demonstrate a detectable change in modal parameter (notably natural frequency) of the girder which is the function of physical properties. The aim of the study was to validate the preciseness of accelerometer-based method. To this purpose, the test was conducted three times for the initial intact and its following damaged states to have an accurate recorded response of the specimen. The measured data were compared with that acquired numerically using Finite-Element Method (FEM) Midas civil software. This paper concluded that even a minor damage can cause detectable shifts in modal parameters of the structure by presenting the well-matched results of both experimental and numerical methods of pre-damage and post-damage states of the girder.
Numerical verification of accelerometer-based assessment of hollow-type pretensioned concrete girder
Asian J Civ Eng
Aasim, Bashir Ahmad (Autor:in) / Karimi, Abdul Khaliq (Autor:in) / Tomiyama, Jun (Autor:in) / Aydan, Ömer (Autor:in)
Asian Journal of Civil Engineering ; 21 ; 437-447
01.04.2020
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| Europäisches Patentamt | 2016
PSC End Zone-Enhancing Pretensioned Pre-Stressed Concrete Girder
| Europäisches Patentamt | 2016
| Europäisches Patentamt | 2018
Real scale fire test on an industrial hall: assessment of a pretensioned concrete girder after fire
| British Library Conference Proceedings | 2006