The steel tank B 8400 with the volume 500 m3 is intended for the storage of water. The shape of the tank is cylindrical with the inner radius 4000 mm, height 9795 mm and constant wall thickness 6 mm. The tank is covered with the self-supported cone steel roof with the inclination of 20° and with the thickness of 7 mm welded to the top ring stiffener. Due to specific conditions of the tank final location, the water tank B 8400 was fabricated 30 m away from its final position and then relocated with the help of a crane without any additional supports of the tank roof. To check the proper attachment of lifting equipment and to check the response of the tank during lifting, FE numerical simulation (software tool ABAQUS) was performed in two stages. In the first stage the reservoir was lifted and in the second stage it was placed on the foundation inclined by 2% to the bottom of the tank. Such fabrication with the tank relocation was economically the most efficient and the fastest. The safety of the relocation was proven in the project by a complex and demanding calculation.
F.09 Development of a new technological process or technology
COBISS.SI-ID: 5710177During the execution of the steel canopy roof that supports the solar power station, the contractor realized that the structure is flexible under a permanent load. The structure of the canopy roof was assembled from cold-formed steel profiles. In certain cases these profiles represent a very economical design solution due to their low weight. Special consideration in the design of such structures has to be given to the stability proof. Considering that the project was already in the implementation phase, the report proposed a very economical solution to stabilize the structure and to increase its stiffness. The proposed solution was based on the knowledge with value-added.
F.34 Consultancy
COBISS.SI-ID: 5709921The test programme and the partial test results were presented to ECCS TC 10 (The European Convention for Constructional Steelwork, Technical committee 10 – connections in steel structures) at the meeting in Bucharest in October 2011. The members of the committee are experts from academic world and industry. It is responsible for professional treatment of connections in steel structures and it is responsible for revisions of the standard EN 1993-1-8, addressing the topic. The Slovenian standard is identical to the European. I was invited to the meeting of ECCS TC 10 as a guest of Prof Darko Beg, Head of the Chair of Metal Structures in UL FG. The presentation was accepted very positively and with the discussion, which ended with an invitation to the next meeting, where I will report on the additional results of the project.
B.04 Guest lecture