Browsing by Author "Jussila, Antti"
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- Standardised Bridge Weigh-in-Motion data and its applications in bridge engineering
Insinööritieteiden korkeakoulu | Master's thesis(2021-01-25) Qvisen, JamiAs the fatigue load models in the Eurocode were developed based on the central European traffic, in some cases fatigue damage obtained with them may differ greatly from damage calculated with actual Finnish traffic loads. Applying actual traffic data in fatigue analysis can provide more accurate results compared to the ones obtained according to the Eurocode traffic models. Weigh-in-Motion (WIM) measurements are an excellent tool to produce such traffic data. Among the different WIM methods, Bridge Weigh-in-Motion (B-WIM) is one of the most suitable ones for bridge engineering as it offers an efficient way to measure the traffic flow and it can also offer structural information of the measured bridge. This enables multiple different applications for B-WIM data in the field of bridge engineering. Using B-WIM data as part of the bridge designing process has large potential, but the lack of standardised data format hinders broader utilisation of it. This study proposes a new standardised format to present the measured B-WIM data so that in the future, programs can directly utilise any available B-WIM data. This makes calculations with multiple different traffic compositions and traffic types easy and enables the basis for further utilisation of B-WIM data in bridge designing. In addition, a fatigue case study is conducted for an orthotropic bridge deck by utilising the Finnish B-WIM data. In the study, multiple different B-WIM measurements with varying traffic compositions are used to calculate the fatigue damage, and obtained results are compared with the damage calculated according to Eurocode fatigue load model 4 (FML 4). To calculate fatigue damage with B-WIM data, a new fatigue calculation software is developed with Python programming language. Additionally, the effects of new traffic regulations set in 2013 are studied by utilising B-WIM data, what are measured after these new regulations, in the fatigue calculation software. - Thailand as a travel destination: Foreign tourists and their socio-economic impacts
School of Business | Master's thesis(2003) Jussila, Antti