التفاصيل البيبلوغرافية
| العنوان: |
Reduced stress method for steel in class 4 cross-sections : Evaluation of the reduced stress method for a railway bridge ; Reducerad spänning för stål i tvärsnittsklass 4 : Utvärdering av metoden reducerad spänning för en järnvägsbro |
| المؤلفون: |
Badrous, Therese, Lund, Ebba |
| بيانات النشر: |
KTH, Byggteknik och design |
| سنة النشر: |
2021 |
| المجموعة: |
Royal Inst. of Technology, Stockholm (KTH): Publication Database DiVA |
| مصطلحات موضوعية: |
FEM, Reduced stress method, Effective cross-section method, Local buckling, Steel cross-section, Class 4 cross-section, Railway bridge, Reducerad spänningsmetoden, Effektivt tvärsnittsmetoden, Lokal buckling, Ståltvärsnitt, Tvärsnittklass 4, Järnvägsbro, Infrastructure Engineering, Infrastrukturteknik |
| الوصف: |
The effective cross-section method, also called reduced cross-section method is generally used for steel in class 4 cross-sections in considering local buckling. This method is a bit complicated and time consuming, which often leads to engineers not using profiles in class 4 cross-sections. The reduced stress method is an alternative method for handling slender steel cross-sections. These two methods are described in the Eurocode, of which the latter is less described. The national annex states that the reduced stress method should not be used, however, without explanation to the general recommendation. This study is a comparison of the two different methods and is intended to provide a better understanding of the reduced stress method. The calculation process and design for steel profiles in class 4 cross-sections can in this way become more efficient. This is done by determining when it is most profitable to use the reduced stress method instead of the effective cross-section method. Thus, can the use of profiles in class 4 cross-sections become a more obvious choice in the industry. This study considered a simply supported I-beam in an open railway bridge exposed to bending moment where the same conditions were investigated for each method. The effective crosssection method is implemented by reducing the cross-sectional area and was calculated manually. In the reduced stress method, it is the yield stress that is reduced. The reduced stress method was analyzed both through FEM and manual calculations in this study. The result showed that the reduced stress method performed through FEM gave a similar result as the effective cross-section method, which makes it an appealing method. The reduced stress method with manual calculation, however, gave a more conservative result. These methods are relativelydifferent and recommendations for each method are presented in this report. ; Idag behandlas ståltvärsnitt i tvärsnittklass 4 generellt med hjälp av metoden effektivt tvärsnitt för att beakta lokal buckling. ... |
| نوع الوثيقة: |
bachelor thesis |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
TRITA-ABE-MBT; 21571 |
| الاتاحة: |
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302525 |
| Rights: |
info:eu-repo/semantics/openAccess |
| رقم الانضمام: |
edsbas.494701D4 |
| قاعدة البيانات: |
BASE |