Metal constructions 2, 6th semester, III ICE

Summary

The structural design should provide steel structures with the following attributes:

  • Overall strength and stability under the design loads
  • Serviceability under all normal loads and imposed deformations
  • Integrity, ductility and robustness against abnormal loads from extreme events
  • Adequate fire resistance
  • Durability in various natural environments (durability = the ability of a product to maintain its required performance over a given or long time, under the influence of foreseeable actions)
  • Buildability (the extent to which design of the buildings facilitates ease of construction, subject to the overall requirements of completed building)
  • Operability during the design working life
  • Economy: The structure should fulfill the above requirements at economic costs
  • Low environmental impact over the entire life cycle

The course covers the following items:

  • Classification of steel members; plate elements in compression, effective width, cross sections classification
  • Elements in tension and elements in compression: configuration, strength verifications, concept of instability - stability verifications, code provisions
  • Restrained and unrestrained beams in bending: type of beams, beams resistance, serviceability, elastic buckling, design approach.
  • Short columns, slender columns; Non-dimensional slenderness; In plane behavior, uniaxial bending, lateral torsional buckling, out of plane buckling, biaxial bending; Code design provisions
  • Types of plate girders, applications; Behavior of plated structural elements with slender web; Design of plated structural elements in bending; Actions induced by cranes machinery, runway beams
  • Cold-formed steel sections, fabrication; Cold-formed steel design; Connections; Types of applications
  • Plastic analysis; General; Conditions of application; Type of analysis vs. cross section class; Cyclic behavior in bending; Factors affecting the plastic resistance
  • Fatigue in steel elements: High cycle fatigue; Low cycle fatigue; Fatigue curves; Connection details

Objectives

  • Understanding and awareness of the role of structural robustness
  • To initiate the students into the main problems related the design and verification of steel structures for civil applications. A good understanding of these problems is very important for the future graduate's career as structural engineer
  • Development of engineering judgment to rely on in the conceptual design stage

Lecture notes

Metal constructions 2

Applications

  • Simple structural configuration, evaluation of loads, analysis
  • Design and verification of a truss girder, including connections
  • Design and verification of a beam in different conditions: laterally restrained, laterally unrestrained. The verification of the beam splice connection
  • Design and verification of a column
  • Design and verification of a thin walled cold formed purlin