Crane girder design, investigation of web buckling and backup bracing

Publiceringsdatum: 2024-09-11

Är du intresserad av att jobba inom yrken med teknisk inriktning? AFRY AB är på jakt efter en skicklig civilingenjör, maskin och du kan vara rätt person för jobbet. AFRY AB söker en medarbetare på heltid som vill arbeta 3 månader – upp till 6 månader. Kan det vara du?

Platsen där jobbet finns ledigt är i Stockholm. AFRY AB har just nu en ledig tjänst som civilingenjör, maskin. Om du vill ta din karriär till nästa nivå, ta en titt på deras jobbannons och se om jobbet passar dig! Sök jobbet som civilingenjör, maskin hos AFRY AB och ta chansen att ta din karriär till nästa nivå. Ansök senast fredag den elfte oktober 2024.

Jobbannons

Företagsbeskrivning

AFRY provides engineering, design, digital and advisory services. We are devoted experts in industry, energy and infrastructure sectors, creating impact for generations to come. AFRY has Nordic roots with a global reach. Join us in accelerating the transition towards a sustainable society.

Om rollen

Background

• Crane runway girders are vital components in industrial structures, ensuring smooth crane operations. Failure in these components can halt production, causing significant financial losses and safety risks. Although they might seem simple at first glance—just a steel beam spanning over multiple supports—their design and performance are crucial.
• Optimizing crane girder design, particularly for heavier cranes, is essential for reducing costs and carbon emissions and ensuring durability. This includes using thinner web plates and optimizing backup bracing systems—horizontal trusses that support the top flange of long-span girders against lateral-torsional buckling and improve stiffness for horizontal loads.
• Backup bracing is normally formed as a warren truss to restrain the top (and sometimes the bottom) flanges for lateral torsional buckling, lateral deformations and also increasing the beam torsional capacity

Aim

• Comparison of current version of Eurocodes, new version of Eurocodes and American codes for crane girders with regard to web buckling
• Backup bracing stiffness calculations and sensitivity analysis, proposing a simplified approach for stiffness evaluation of bracings
• Understanding buckling behavior of the slender webs in crane girders

Method

• Review requirements regarding crane girders for web buckling and bracing (Eurocode, AISC, AIST, etc.)
• FE modeling of the girder with the backup truss
• Buckling analysis of slender web and comparison with results from Eurocode
• [Optimization of the design using Genetic Algortihm]

What you gain

• By the end of this project, you will have gained a comprehensive understanding of various aspects of design and optimization of crane runway girders, including relevant standards, fatigue design, and structural stability. This knowledge is essential for future roles as structural engineers, particularly in the field of industrial structures, where ensuring stability and efficiency is critical. Opportunity for recruitment

Kravspecifikation

• Good knowledge about steel structures and Eurocode 3
• Merit to have Experience with FE software (ex ABAQUS, Ansys, SAP2000 or other commercial software)

Ytterligare information

Welcome to submit your application, the deadline is 2024-10-31, selection of applicants takes place continuously. Please attach a cover letter and an academic transcript.

Contact persons for questions:

Hossein Zonouzimarand, hossein.zonouzi@afry.com

Babak Navid, babak.navid@afry.com

Joaquín García Avondet, joaquin.garciaavondet@afry.com

We kindly ask not to be contacted by staffing and recruitment agencies or salespeople offering additional job advertisements.

På AFRY driver vi förändring i allt vi gör. Vi anser att förändring sker när modiga idéer möts, när vi samarbetar, skapar innovation och omfamnar kreativa lösningar, det är så vi skapar framtiden. Vi söker konstant kvalificerade kandidater som vill ansluta sig till våra inkluderande team runt om i världen. Bli en del av oss och påskynda den gröna omställningen