Redesign of Existing Structures
Instructor: Dritsos Stefanos
Course code: A16104
- Redesign as a multi-dimensional issue. Seismic risk, vulnerability and resilience of old and new construction. The basic principles for the assessment of the seismic resistance and resilience and for the redesign of existing construction according to the current EC8-Part 3 Code and the Greek Codes KAN.EPE. and KADET. Strategy to prioritise the earthquake strengthening of an existing building stock applying the first and second level pre-earthquake assessment procedures.
- Pathology of structures under seismic actions. Criteria for pre-earthquake or post-earthquake interventions. Prioritisation. Strategy for individual construction. Selection of the appropriate performance and target assessment level. Economic criteria. Selection procedure for the optimal solution to enhance the resistance of an existing building under seismic actions.
- Redesign actions. Assessment of the seismic capacity of buildings using elastic and inelastic methods. Approximate methods to assess the seismic capacity of buildings.
- Methods of strengthening the structure as a whole. Addition of new vertical elements, infill walls, bracing systems, jacketing. Selective redesign of weak elements. Available resources, materials, technologies and techniques. Criteria for the choice on a case-by-case basis. Check of the connection between new and old elements. Mechanics of interfaces in multi-phase elements. Determination of the strength and deformation capacity of repaired/strengthened elements.
- An integrated study to assess the seismic capacity and retrofitting of a multi-storey building using elastic and inelastic methods according to KAN.EPE. Comparison with results from approximate methods.