| Abstract [eng] |
In the master’s thesis, it is proposed to cover an open site of the shipyard, located in Klaipėda seaport, Lithuania, the EU, by mobile steel structures. In the review chapter the development of Klaipėda seaport and shipyard have been reviewed. The research of dynamically acting steel structures, provided by the scientific literature and similar mobile structures have being analysed, peculiarities of foundation design have being discussed. In the research chapter of site modernization possibilities, the shipyard existing open site conditions were investigated. An archival report of the geological conditions of the site area has been reviewed. Six transverse frames mobile structure of height of 23 m and span of 40 m have been proposed. The frames are arranged by the step of 6,0 m and jointed by the system of braces. Pile foundations have been calculated. In the chapter of static analysis of the models, according to the design codes and climatic conditions in Klaipėda city, two types of steel frames have being designed: trussed and continuous. A special algorithm from three stages has been made: three transverse frame calculation schemes have been created, cross sections have been determined, cross-sectional optimization has been performed. Finally, the trussed frame is lighter by 37 %, the continuous frame is stiffer up to 40 %. In the movement analysis chapter, the influence of dynamic effects is discussed. After third stage, the calculation results of different models were compared and the most appropriate trussed type was selected. In the economic assessment chapter, it has been calculated that the mobile facility would increase the productivity of the open site up to 92 %. To sum up, the conclusions of the research and suggestions for the implementation have been presented. During research, the scientific article was prepared and presentation was presented in the international conference. The thesis consists of 79 pages of the main text and 27 pages of annexes. The text contains 25 tables, 79 figures and a list of 64 references. |
