2022 · Civil Engineering
Performance Based Seismic Design
Civil Engineering Structural Analysis ETABS
Performance Based Seismic Design
BITS Pilani | Jan 2022 – May 2022
ETABS SAP2000 Pushover Analysis FEMA Guidelines Structural Engineering
Project Overview
Developed comprehensive performance-based seismic design framework for reinforced concrete structures, enabling multi-level hazard assessment and optimized structural resilience.
Key Contributions
Pushover Analysis: Conducted nonlinear static pushover analysis in ETABS/SAP2000 for multi-story RC frames, generating capacity curves and identifying plastic hinge formations
Performance Objectives: Applied FEMA 356/440 guidelines to evaluate structural performance at multiple hazard levels (IO, LS, CP) for Zone IV/V seismicity
Design Optimization: Proposed ductile detailing modifications achieving 30% improvement in drift capacity while maintaining code-compliant strength requirements
Technologies Used
- Software: ETABS, SAP2000
- Standards: FEMA 356, FEMA 440, IS 1893
- Methods: Pushover Analysis, Response Spectrum
- Domain: Structural/Earthquake Engineering
Performance Levels
| Level | Description | Drift Limit |
|---|---|---|
| IO | Immediate Occupancy | 0.7% |
| LS | Life Safety | 2.5% |
| CP | Collapse Prevention | 4.0% |
Key Results
| Metric | Value |
|---|---|
| Drift Capacity Improvement | 30% |
| Seismic Zones Analyzed | IV, V |
| Performance Levels | 3 (IO, LS, CP) |
| Analysis Method | Nonlinear Static Pushover |
Design Framework
1. Preliminary Design → Code-based sizing
2. Modeling → ETABS/SAP2000 3D model
3. Pushover Analysis → Capacity curve generation
4. Performance Evaluation → FEMA guidelines
5. Retrofit Design → Ductile detailing
6. Verification → Target displacement check