Browsing by Author "Paukkeri, Heikki"

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Väyläruoppauksen tietomallipohjaisen prosessin kehittäminen
(2012) Paukkeri, Heikki
School of Engineering | Master's thesis
In the fairway and dredging projects ordered by Finnish Transport Agency, the undeveloped data transfer and data utilization are aimed to be improved in the BIM-utilizing (Building Information Model) Dredging BIM project, of which this work is a part. BIM, or infraBIM on the area of civil engineering, means the whole of the parsed digital data of the product, in its whole life-cycle. In the model-based process, the current situation of the planning area is described in the initial model which becomes to the design model by adding the design data in it. The design model is edited to the as-planned model which is utilized in dredging monitoring systems. Furthermore, the as-designed model is compared to the as-built model, the measured data of the fairway is saved in the maintenance model, and the final situation of the fairway is described in the residual model. The main purpose of this work was to develop the specification of the as-designed model for navigation dredging. The usability of the specification was found out by processing and modelling the data of Rauma fairway. Moreover, the possibilities to utilize and develop infraBIM guidelines, the source data of navigation dredging process and the data transfer based on the open format inframodel2 (IM2), were researched. The work focused on the phases of the construction design and the construction of the fairway. Finnish InfraBIM guidelines were applied on the modelling of the source data of Rauma fairway. In this work, details from the view of fairways were developed for these guidelines. The development work of the specification of the as-designed model was mainly based on the InfraBIM guidelines on the as-designed modelling of roads and highways. Also, the dredging contractors were heard to gather the information for the development works. The as-designed model contained definitions for the digital data needed for navigation dredging works, including fairway model, bathymetric and subsurface data, boulders and pits for buoy weights. Concerning of the source data for dredging and planning works, remarkable needs were found for the development of the utilization of the measurements and also for the coverage and the programming of the investigations. The source data will be improved by increasing the amount of low-frequent soundings, the soil interpretations and the co-interpretations among the different investigation methods. Also, getting the investigations and the interpretations already in the early phases of the projects would be important. However, that is not always possible because of the economic reasons. The IM2 specification will also be improved by changing the cross section parameters of the fairways and by defining the point objects, such as boulders and safety devices. For commissioning the model-based process and the IM2-based data transfer, at least the development of the dredging monitoring systems is demanded. Also, the specification of the IM2-format insufficiently was unambiguous, which lead to the problems in the data transfer. This work only applies on the area of the dredging of fairways. Also, the costs of the development and commissioning works could not be estimated. Therefore, the specification of as-designed model may have to be changed in the future due to the uncertainties in this work. However, the model-based way of processing is estimated to notably improve the ensemble of the source data of navigation dredging and its usability, clarity, quality and manageability.
Valunnan syntymekanismit ja valuntaprosessien mallintaminen
(2010) Paukkeri, Heikki
Insinööritieteiden ja arkkitehtuurin tiedekunta | Bachelor's thesis