Design of Steel StructuresLaajuus (4 ECTS)

Objective

After completing the course students are able to design a steel beam and a column for different load combinations, and to design a small building complex according to the Eurocode Standards.

The students have the capability to design the bracing of structures as well as the local stiffening of structural parts. They are able to take into account point load resistance in the structure and they know how to design a truss structure made of hollow cross-sections and steel beam that belong to cross-section class 4 as well as take into account the impact of lateral buckling in bended beam design.

The students are able to explain the lateral torsional buckling as well as plastic design, torque and torsional buckling, and to know how the second-order effects must be taken into account.

The students are also able to design the steel structure of the fire situation and to take into account the local strength of welded hollow section joints.

Content

1. Stiffening of structures
2. Cross-sectional resistance according to EN1993-1-5 (cross-section class 4)
3. Point load strength
4. The lateral buckling of the beam
5. The design of a bent compression member
6. Hollow section truss design
7. Hollow section truss connection design
8. Fire design
9. Second order effects

Qualifications

Matematiikan perusopinnot
Rakenteiden mekaniikka ja statiikka
Rakennesuunnittelun perusteet

Assessment criteria, satisfactory (1)

The student
- Can explain the meaning of bracing and name the three most important methods used in connection with the steel structures.
- Can explain the core content of design for cross-section of class 4 and knows how to do calculation progress for the effective cross section.
- Can calculate the I profile point load resistance.
- Can check the beam's resistance for the lateral buckling.
- Is able to design a compressed and in one direction bent member of two symmetrical axis.
- Understands the steps of design and the operational principles of welded hollow section connections as well as is capable to design a simple hollow section truss.
- Can explain the procedure of the fire design of steel structures according to the critical temperature method.
- Can explain what is meant by the second-order effects.

Assessment criteria, good (3)

The student
- Understands the importance of bracing and knows how to choose a suitable bracing system and take into account the possible impact on the design of structures.
- Understands the cross-section of class 4 of the underlying phenomenon, and is able to calculate the cross section values of effective cross section for I section which web belongs to cross-section class 4.
- Understands what the issue of the point load resistance is and is able to calculate the point load resistance for different sections.
- Is able to calculate the critical lateral buckling moment, check the resistance against lateral buckling and design a beam under lateral buckling.
- Is able to design a compressed and in two directions bent member of two symmetrical axis.
- Understands the design steps of hollow section truss and the operation principles of connections as well as can design truss made of hollow section members and check the capacity of the most stressed welded joints.
- Can accomplish the fire design of steel structures according to the critical temperature method.
- Can take into account second order effects of the global initial sway imperfection and the local equivalent curvature.

Assessment criteria, excellent (5)

The student
- Knows how to choose the most suitable bracing system for the structure and how to take into account the effects for the load-bearing structures of the related structures.
- Can define the shear buckling resistance and calculate the cross section values of the effective cross section for I section that belong to cross-section class 4.
- Understands the phenomena associated with point loading, and is able to calculate the point load resistance for different profiles as well as its interaction with other loads.
- Can define the critical lateral buckling moment for differently supported beams, take into account the location of the load and design the beam under lateral torsional buckling.
- Is able to design the compressed and in two directions bent member with one symmetrical axis.
- Understands the design steps of hollow and the operation principles of connections as well as can design hollow section truss and check the capacity of its most stressed joints.
- Can do the fire design of steel structures according to the critical temperature method and can explain the progress of the fire design according to the strength method.
- Can take into account second order effects of the global initial sway imperfection and the local equivalent curvature and the additional horizontal forces caused to the supporting structure.