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CEN4029-N Advanced Structural Design - Teesside University
Numerical Analysis and Design Report
Learning Outcome 1. Demonstrate a comprehensive knowledge and critical understanding of complex mathematical and computer models relevant to structural design as well as an appreciation of their limitations.
Learning Outcome 2. Interpret knowledge of current practice, relevant to structural design, its limitations and an appreciation of likely new developments.
Learning Outcome 3. Extract and manipulate data pertinent to an unfamiliar problem, and apply its solution using computer based structural engineering tools where appropriate.
Learning Outcome 4. Demonstrate the ability to adapt a wide and comprehensive knowledge of the analytical elements in the application of the structural engineering design processes and their methodologies, to unfamiliar situations.
Learning Outcome 5. Integrate evidence and concepts taken from technical literature and other information sources to solve foreseen and unforeseen structural engineering design problems.
Learning Outcome 6. Apply a critical knowledge of the requirement for structural engineering design activities to promote sustainable development and its impact on wider environmental issues.
Learning Outcome 7. Make informed professional judgements in the application of codes of practice and industry standards used in structural and civil engineering, as well as in the wider engineering context.
Learning Outcome 8. Demonstrate competency in computing skills commensurate with the demands of research/scholarship in structural design.
Learning Outcome 9. Collaborate effectively with others in ways appropriate to the structural engineering profession.
Assignment Brief
Design and the assessment of a multi - storey building with a steel plate shear core using finite element software
You have been asked to design a twenty storey steel building for commercial use, whereby each storey is 3.5 metres high.
It is required by the client to consider a steel plate shear core for resisting the lateral wind loads.
Use a finite element approach with appropriate design software to analyse the steel building for the loading system described below.
The floor layout at every level (including roof) is as indicated in Figure 1. Assume that the minimum column spacing in each direction (and from the steel shear wall) is 6 metres.
Assume a dead load for all the floors, including roof, as 3.0 kN/m2. Appropriate imposed loads should be assumed based on Eurocode 1 (EN1991 Part 1.1)
Other assumptions:
1. The steel plate of the shear core is 15 mm thick, which is known to be adequately stiffened and braced against buckling.
2. A uniform horizontal wind load of 2.0 kN/m2 acts simultaneously on the front and a side elevation of the building.
3. The shear core base is fixed continuously to the underlying foundations.
4. Beams are pinned - connected to the columns.
Project deliverables:
For the project you need to submit an individual report, addressing the following:
Task 1:
Perform a preliminary design of the steel columns and beams of the building assuming: (1) only two different column section sizes along the height of the building and (2) beams are laterally restrained due to the composite action with concrete slab. Indicate the column and beam layout arrangement for a typical floor in a plan view drawing.
Task 2:
Build a numerical model of the multi-storey building using a structural analysis software (e.g., SpaceGass) adopting typical beam-column elements for all the steel (primary/secondary) beam and column members and plate elements for the steel core and the concrete slabs of the composite floors. Provide information about all key modelling steps supported by screenshots from the software. Perform simple hand (manual) calculations to demonstrate the reliability of your finite element model by comparing them with analysis results, including screenshots, from the software.
Task 3:
Check whether a 15mm thickness for the steel plate of the core is sufficient for a pure elastic behaviour. Consider appropriate load combinations with simultaneous actions of two variable loads (wind and imposed loads). Assume that a steel grade S355 was used for the shear core. Investigate if the 15mm plate thickness is sufficient to limit the deflection at the top of the building below a maximum allowable of H/400, where H is the total height of the building. What would be an optimised steel plate thickness to satisfy ‘exactly' the serviceability limit state deflection?
Figure 1: Plan view of the proposed office building
Attachment:- Advanced Structural Design.rar