Advanced Analysis and Design of Steel Structures (BYG580)

The course provides advanced knowledge, principles, and computer-aided tools for analyzing, designing, and maintaining onshore and offshore structures. The first part of the course focuses on building a fundamental understanding of the elastic-plastic behavior of materials and structures, along with principles of plastic collapse and energy dissipation, including theorems and methods in plastic analysis. The remaining parts of the course cover analysis and design philosophies related to ultimate, serviceability, and fatigue limit states. Additionally, the course discusses applications in collision and dropped-object analysis and introduces guidelines for accidental design situations.


Course description for study year 2025-2026. Please note that changes may occur.

Facts

Course code

BYG580

Version

1

Credits (ECTS)

10

Semester tution start

Spring

Number of semesters

1

Exam semester

Spring

Language of instruction

English

Offered by
Time table

View course schedule

Content

The course consists of three modules.

Module 1: Plastic Analysis of Structures

  • Principles of ultimate load design. Theory of plasticity and introduction to numerical analysis. Plastic capacities of cross sections (i.e. axial force, shear, torsion, bending moment capacities and reduced capacities due to force interaction).
  • Formation of plastic hinges and collapse mechanisms. Bound theorems of plastic analysis. Plastic capacities of beams and frames.
  • Plastic capacities plates/shells under transverse loading, without and with axial load. Plastic load capacities of bolted/welded joints and tubular joints. Plastic load capacities of dented structural element.
  • Plastic analysis and design case studies (collision, dropped object analysis and etc). Introduction to Accidental Limit State design guidelines, standards and codes.

Module 2: Analysis and design of thin-walled/plated structures

  • 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 system.
  • 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.

Module 3: Analysis and design for fatigue

  • 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.
  • General concepts in health monitoring and integrity assessment of structures including fields of applications (i.e. Introduction to structural health monitoring methods and damage detection).

Learning outcome

Upon completion of the course, the students shall have a fundamental understanding of the principles of plastic collapse and energy dissipation of structures and 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, fatigue 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.

Required prerequisite knowledge

None

Recommended prerequisites

BYG140 Structural Mechanics 1, BYG200 Steel Structures

Exam

Form of assessment Weight Duration Marks Aid
Written exam 1/1 4 Hours Letter grades - 1), Alle kalkulatorer, Norsk Standard NS-EN 1993-1-1:2005+A1:2014+NA:2015, Norsk Standard NS-1993-1-8: 2005+NA:2009, Alle sammendrag utdelt i forelesninger, Steel Profile and Formula book “Stålkonstrukjoner”, Maximum 10 pages (A4 size) of own handwritten,

1) All summary handouts distributed in the lectures, All power point lecture slides, Steel profile and formula book “Stålkonstrukjoner”, Maximum 10 pages (A4 size) of own handwritten notes.

Written exam on paper.

Coursework requirements

Exercises
80% of the compulsory assignments must be approved in order to take the written exam.

Course teacher(s)

Course teacher:

Mudiyan Nirosha Damayanthi Adasooriya

Course coordinator:

Sudath Chaminda Siriwardane Siriwardane Arachchilage

Head of Department:

Mona Wetrhus Minde

Method of work

6 hours of lectures per week.

Overlapping courses

Course Reduction (SP)
Advanced Analysis and Design of Steel Structures (BYG665_1) 5
Plastic Analysis of Structures (BYG530_1) 5

Open for

Admission to Single Courses at the Faculty of Science and Technology
Structural and Mechanical Engineering - Master of Science Degree Programme Structural and Mechanical Engineering - Master of Science Degree Programme. Five Years Marine and Offshore Technology - Master of Science Degree Programme
Exchange programme at Faculty of Science and Technology

Course assessment

There must be an early dialogue between the course supervisor, the student union representative and the students. The purpose is feedback from the students for changes and adjustments in the course for the current semester.In addition, a digital course evaluation must be carried out at least every three years. Its purpose is to gather the students experiences with the course.

Literature

Search for literature in Leganto