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Long Span High Strength Steel Trusses
2014 (Engelska)Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
Abstract [en]

Long span truss elements are required in modern applications like stadiums, show-rooms, exhibition halls, airports. Problems may be arise due to the dimensions and weight of the truss itself. Instability, buckling and finally collapse of the structure may be caused, if not installed and braced properly. A convenient solution to this may be the use of HSS, since this will lead to a reduction in weight of the steel structure and implicitly in the foundation area (not to be analysed in this work). Also, smaller amounts of CO2 emissions would be emitted (due to the reduced material and less transportation needs), which makes the study of the HSS usage an appealing one.For an even greater weight reduction and a more sustainable solution, a truss constructed of built-up polygonal cross-sections is analysed and proposed, instead of the classic circular hollow sections approach for the chord and diagonal members. U shaped profile will be considered for the lower chord, which is subjected to tensional forces, a shape that optimally uses the necessary area for undertaking the tensional stresses.Computational analysis will be performed in Abaqus Finite Element software. The main concern is the behaviour of the connections in the tension chord under various load levels and the buckling analysis of polygonal members. For understanding deeper the advantages of using HSS, 3 steel grades (S355, S500 and S650) are compared from an economical and environmental point of view, both for the CHS and the built-up polygonal section trusses.

Ort, förlag, år, upplaga, sidor
2014.
Nyckelord [en]
Technology, Truss, High strength steel, Steel, Long span, Polygonal
Nyckelord [sv]
Teknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-50751Lokalt ID: 7fa9a5ce-5a67-43ab-871e-b81dbee896b5OAI: oai:DiVA.org:ltu-50751DiVA, id: diva2:1024113
Ämne / kurs
Examensarbete, minst 30 hp
Utbildningsprogram
Väg- och vattenbyggnad, master
Handledare
Examinatorer
Anmärkning
Validerat; 20140211 (global_studentproject_submitter)Tillgänglig från: 2016-10-04 Skapad: 2016-10-04Bibliografiskt granskad

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Alechnavicius, VaidasBalint, Jozsef

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Totalt: 98 träffar
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