Operational modal analysis of a fixed-fixed beam under moving vehicular loads
Publish place: 4rd Iran International Conference on Structural Engineering
Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISSEE04_220
تاریخ نمایه سازی: 8 تیر 1398
Abstract:
Structural health monitoring of bridges as an infrastructure is essential to prevent damaging and collapse. For continuous monitoring, the operating traffic loads can be used as a good source of excitation. However, due to the unknown amount and random nature of the road excitation and the inherent uncertainties in a bridge-vehicle system, it’s challenging. In this paper, for the purpose of operational modal analysis (OMA), an efficient output-only modal analysis technique named stochastic subspace identification method (SSI) is used. First, a finite element model of an elastic beam excited with a mass train traversing the span is validated and calibrated using the dynamic response of an experiment. Then, further study is done on the developed model by simulating a real test and investigate OMA method.
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Authors
Fariba Shadan
Assistant Professor, University of Science & Technology, Mazandaran, Behshahr, Iran