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Use of High Strength Steel in industrial halls: A comparative study on the design and sustainability of S355 and S700
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Nowadays, sustainability is one of the most interesting topics for research due to the economic and environmental aspects which is constantly improving [1]. Furthermore, constructions were and will be under development because of the big number of social and economic needs, a perspective which is long sought in the EU [2]. It’s clearly seen that research involving those two topics can be at least very creative.Although the use of high strength steel (HSS) is not so popular in constructions yet, in this thesis, optimized HSS members are investigated [3] for the design of industrial building and compared to an equivalent hall made of typical S355 in terms of sustainability.It is noted that the Eurocodes [4]–[6] provisioning the designing of steel structures involves steel grade from S235 to S460. Currently there are no specific details for designing members with strength higher than 460 MPa. EN1993-1-12 [7] came up to specify that for the most of cases of designing S700 steel elements can be calculated with the same procedure as followed for S460.Herein the focus is on the design and the environmental assessment of industrial buildings, considering the production phase. From the environmental perspective, a big impact is dedicated to the use of phase while a considerable part comes from the production and erection phases. The energy consumption during the use phase is commented in [8].A 3-hinged frame with tapered beams and columns is chosen for the structural system, leading to a portal-frame design, ideal 20 m to 60 m spans [9]. Beam elements are preferred against trusses, as the later require big welding length. Especially for HSS, full strength requirement lead to extreme welding demands, indication of a structure with low environmental efficiency. Moreover, the tapered beams allow for an even better utilization of the material.The first part of thesis will cover the designing procedure for the industrial building using HSS and the second part will cover the calculation of the same building designed using mild steel. Throughout the thesis, S700 is considered for the HSS case and S355 for the mild steel case.The above decisions will lead to a comparative sustainability assessment. To what extend can the efficiency be improved, resulting to a more economic and environmentally friendlier construction? In the third part, such questions will be answered through a side-by-side comparison, aiming to conclude on the overall benefits achieved with the use of HSS.

Place, publisher, year, edition, pages
2015. , 96 p.
Keyword [en]
Technology, High-strength steel, Industrial building, tapered elements, sustainability, Eurocode
Keyword [sv]
URN: urn:nbn:se:ltu:diva-59316Local ID: fd8ddd3d-8ca3-4001-a9e3-72c272108963OAI: diva2:1032703
Subject / course
Student thesis, at least 30 credits
Educational program
Civil Engineering, master's level
Validerat; 20150217 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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