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Advanced Analysis and Design of Steel Structures BYG665

The course mainly provides an advanced knowledge, principles and computer aided tools for analyzing, designing and maintaining civil and offshore steel structures. The course covers analysis and design philosophies in all the structural design limits states / situations such as ultimate, serviceability, fatigue and accidental.  


Course description for study year 2021-2022. Please note that changes may occur.

Facts
Course code

BYG665

Version

1

Credits (ECTS)

10

Semester tution start

Autumn

Number of semesters

1

Exam semester

Autumn

Language of instruction

English

Offered by

Faculty of Science and Technology, Department of Mechanical and Structural Engineering and Materials Science

Learning outcome
Upon completion of the course, the students shall have a fundamental knowledge of the advanced non-linear analysis and design principles of steel structures. The students will also be able to understand the behavior of structures under ultimate and accidental loadings. The students can apply existing theories, methods and scientific insight in the structural engineering field and work independently. The students may develop advanced skills in structural analysis and design, critical evaluation and solving critical issues of steel structures such as multi-story buildings, long span bridges and marine/offshore structures. In addition, the students should be able to recognize various types of collapse mechanisms fracture models, caused by structural damages, deterioration, and fatigue. The students should also obtain knowledge in monitoring, maintaining and repairing of the damaged steel structure.
Content

Analysis and design for ultimate actions/limit states

  • Overview of theories of plate bending, local buckling, torsional buckling, lateral torsional buckling and torsional flexural buckling.
  • Design of plated structures, thin-walled sections, stiffened plates, plate girders, bridge cross sections and bracing systems.
  • Design of tubular members and tubular joints for ultimate loads according to NORSOK N-004. Introduction to steel shell structures and design guidelines to the Eurocode.
  • Nonlinear modelling and analysis of structures for quasi-static and dynamic loadings. Plastic push over analysis, 2nd order analysis, P- Δ analysis, large displacement analysis and time-domain analysis. Case examples of non-linear multi-story buildings/offshore jacket structures. (Computer-aided case study assignment)
  • Elastic analysis of complex joints and design of joint components according to Eurocode.

Analysis and design for accidental actions

  • Overview of accidental loads to civil and marine structures.
  • Accidental actions from ship collisions with fixed and floating bridges, offshore platforms and other ships. Structural design against accidental loads according to codes and guidelines including NORSOK N-004, DNV RP and Eurocode.
  • Structural response analysis of dropped objects impact and explosions. Design philosophy and method with reference to various design standards are presented.
  • Case examples of collision and impact loads using LS-DYNA. (Computer-aided case study assignment)
  • Design and analysis of fixed and floating structures subjected to earthquake excitations.

Analysis and design for fatigue (Group project and presentation)

  • Basic fatigue theories and application of civil and offshore steel structures
  • Fatigue load models, fatigue strength curve of structural details and design methods according to Eurocode and DNV GL.

Structural health monitoring of steel structures (Group project and presentation)

  • General concepts in structural health monitoring of structures including fields of applications
  • Structural health monitoring methods, data acquisition, structural properties extraction, structural condition evaluation, and damage detection.
Required prerequisite knowledge
None
Recommended prerequisites
BYG530 Plastic Analysis of Structures, BYG550 Mechanical Vibrations, MSK540 Finite Element Methods, Advanced Course
Exam
Form of assessment Weight Duration Marks Aid
Written exam 1/1 4 Hours A - F

Coursework requirements
75% av obligatoriske regneøvelser
75% of the compulsory assignments must be approved in order to take the exam.
Course teacher(s)
Course coordinator: Yanyan Sha
Course coordinator: Sudath Chaminda Siriwardane Siriwardane Arachchilage
Head of Department: Tor Henning Hemmingsen
Method of work
6 hours of lectures and 2 hours tutorials per week. Compulsory assignments.
Open for
Exchange programme at Faculty of Science and Technology
Course assessment
By form and/or by discussions in class in accordance with university regulations.
Literature
The syllabus can be found in Leganto