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Seismic Assessment & Retrofitting of Existing RC Structures - PowerPoint PPT Presentation

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13-19 February, 2018 , Iran Seismic Assessment & Retrofitting of Existing RC Structures Using SeismoBuild and SeismoStruct Dr. Stelios Antoniou Seismosoft ltd. www.seismosoft.com Presentation Summary 1. Methods of Analyses 2. Checks

  2. 13-19 February, 2018 , Iran Seismic Assessment & Retrofitting of Existing RC Structures Using SeismoBuild and SeismoStruct Dr. Stelios Antoniou Seismosoft ltd. www.seismosoft.com

  3. Presentation Summary 1. Methods of Analyses 2. Checks and Acceptance Criteria 3. Strengthening Techniques 4. Evaluation of Different Seismic Retrofitting Solutions - An Example Strengthening Interventions’ Strategy 5. 6. Real Strengthening Projects 7. Assessment of a 2-storey RC Building with SeismoBuild Seismosoft ltd. www.seismosoft.com

  4. Presentation Summary 1. Methods of Analyses Brief description of Performance-based Engineering Methods of Analyses, linear and nonlinear Advantages and Disadvantages Limitations imposed by the Codes Guidelines on how to select method of analysis (preferred method) Seismosoft ltd. www.seismosoft.com

  5. Presentation Summary 1. Methods of Analyses 2. Checks and Acceptance Criteria 3. Strengthening Techniques 4. Evaluation of Different Seismic Retrofitting Solutions - An Example Strengthening Interventions ’ Strategy 5. 6. Real Strengthening Projects 7. Assessment of a 2-storey RC Building with SeismoBuild Seismosoft ltd. www.seismosoft.com

  6. Presentation Summary 2. Checks and Acceptance Criteria Classification of Structural Members - Primary / Secondary Classification of Actions - Force-controlled / Deformation-controlled Expected vs. Lower-Bound Strengths Knowledge Level & Knowledge Factor Capacity Checks - Linear methods & non-linear methods - Main checks of the assessment Seismosoft ltd. www.seismosoft.com

  7. Presentation Summary 1. Methods of Analyses 2. Checks and Acceptance Criteria 3. Strengthening Techniques 4. Evaluation of Different Seismic Retrofitting Solutions - An Example Strengthening Interventions ’ Strategy 5. 6. Real Strengthening Projects 7. Assessment of a 2-storey RC Building with SeismoBuild Seismosoft ltd. www.seismosoft.com

  8. Presentation Summary 3. Strengthening Techniques Presentation of the Basic Strengthening Techniques - RC Jackets - New RC walls - Steel Bracing - FRP Wrapping - FRP Laminates - Steel Plates - Seismic Isolation - Resins / Mortars Effects on the Structural Response Advantages / Disadvantages When they are used Seismosoft ltd. www.seismosoft.com

  9. Presentation Summary 1. Methods of Analyses 2. Checks and Acceptance Criteria 3. Strengthening Techniques 4. Evaluation of Different Seismic Retrofitting Solutions - An Example Strengthening Interventions ’ Strategy 5. 6. Real Strengthening Projects 7. Assessment of a 2-storey RC Building with SeismoBuild Seismosoft ltd. www.seismosoft.com

  10. Presentation Summary 4. Evaluation of Different Seismic Retrofitting Solutions - An Example Existing RC Building Different Strengthening Methods - Strengthening with Jacketing - Strengthening with RC Walls (ground floor only) - Strengthening with RC Walls (full height) - Strengthening with Braces - Strengthening with FRP Wrapping Interventions ’ Effect on Structural Response Advantages / Disadvantages Comparison between Methods Seismosoft ltd. www.seismosoft.com

  11. Presentation Summary 4. Evaluation of Different Seismic Retrofitting Solutions – An Example Comparative Plots 0.04 Initial Building New RC Walls (Ground Storey) 0.03 0.02 0.01 0 0 2 4 6 8 10 12 14 16 18 20 -0.01 -0.02 -0.03 -0.04 Seismosoft ltd. www.seismosoft.com

  12. Presentation Summary 4. Evaluation of Different Seismic Retrofitting Solutions – An Example Compare Response with/without Strengthening Perf. Ratio = 1.09 << 1.68 Seismosoft ltd. www.seismosoft.com

  13. Presentation Summary 1. Methods of Analyses 2. Checks and Acceptance Criteria 3. Strengthening Techniques 4. Evaluation of Different Seismic Retrofitting Solutions - An Example Strengthening Interventions’ Strategy 5. 6. Real Strengthening Projects 7. Assessment of a 2-storey RC Building with SeismoBuild Seismosoft ltd. www.seismosoft.com

  14. Presentation Summary 5. Strengthening Interventions Strategy Criteria for selecting Strengthening Methods Some Basic (empirical) Rules Seismosoft ltd. www.seismosoft.com

  15. Presentation Summary 1. Methods of Analyses 2. Checks and Acceptance Criteria 3. Strengthening Techniques 4. Evaluation of Different Seismic Retrofitting Solutions - An Example Strengthening Interventions ’ Strategy 5. 6. Real Strengthening Projects 7. Assessment of a 2-storey RC Building with SeismoBuild Seismosoft ltd. www.seismosoft.com

  16. Presentation Summary 6. Real Strengthening Projects Presentation of Several Strengthening Projects with Different Strengthening Techniques Seismosoft ltd. www.seismosoft.com

  17. Presentation Summary 6. Real Strengthening Projects Strengthening of Damaged Building from Recent Earthquake Seismosoft ltd. www.seismosoft.com

  18. Presentation Summary 1. Methods of Analyses 2. Checks and Acceptance Criteria 3. Strengthening Techniques 4. Evaluation of Different Seismic Retrofitting Solutions - An Example Strengthening Interventions ’ Strategy 5. 6. Real Strengthening Projects 7. Assessment of a 2-storey RC Building with SeismoBuild Seismosoft ltd. www.seismosoft.com

  19. Presentation Summary 7. Assessment of a 2-storey RC Building with SeismoBuild Construct the Structural Model Seismosoft ltd. www.seismosoft.com

  20. Presentation Summary 7. Assessment of a 2-storey RC Building with SeismoBuild Input the Assessment Parameters Seismosoft ltd. www.seismosoft.com

  21. Presentation Summary 7. Assessment of a 2-storey RC Building with SeismoBuild Input the Performance Objectives & Earthquake Hazard Levels Seismosoft ltd. www.seismosoft.com

  22. Presentation Summary 7. Assessment of a 2-storey RC Building with SeismoBuild Input the Seismic Action Seismosoft ltd. www.seismosoft.com

  23. Presentation Summary 7. Assessment of a 2-storey RC Building with SeismoBuild Carry out the Required Analyses (Eigenvalue & Pushover) Seismosoft ltd. www.seismosoft.com

  24. Presentation Summary 7. Assessment of a 2-storey RC Building with SeismoBuild Carry out the Capacity Checks Seismosoft ltd. www.seismosoft.com

  25. Presentation Summary 7. Assessment of a 2-storey RC Building with SeismoBuild Export the Deliverables (Report with checks) Seismosoft ltd. www.seismosoft.com

  26. Presentation Summary 7. Assessment of a 2-storey RC Building with SeismoBuild Export the Deliverables (CAD drawings) Seismosoft ltd. www.seismosoft.com

  27. Presentation Summary 7. Assessment of a 2-storey RC Building with SeismoBuild Strengthen the building and carry out the checks again Seismosoft ltd. www.seismosoft.com

  28. Presentation Summary 7. Assessment of a 2-storey RC Building with SeismoBuild Strengthen the building, run the analysis and export the deliverables Seismosoft ltd. www.seismosoft.com

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