Abstract — High Rise With Soil Structure Interaction
Abstract: An asymmetrical R.C.Multi-storey building without infill walls (G+10) with plan irregularity, having four bays in x and y directions located in seismic zones II and III has been analysed with fixed base condition and flexible base condition. Flexible base is achieved by introducing the stiffness of the soil and further the foundation of the building is assumed to be resting on this soil, is called the Winkler’s model approach to incorporate Soil-Structure Interaction to the building. Each individual footing has been designed, depending on the load transferred from column to the footing. Design of footing is carried out based on the IS: 456-2000 code. Using the designed isolated footing parameters, the values of spring stiffness under each column has been calculated using the empirical relationship given in NIST GCR 12-917-21 for assumed values of Modulus of Elasticity and Poisson’s ratio of the soil. Equivalent static method is used in the analysis to take care of earthquake forces as per IS: 1893-2002. Results have been studied for fixed base and flexible base conditions for both the seismic zones. Conclusions are drawn from the graphs obtained from software tool, such as maximum storey displacement, maximum storey drift and overturning moments.
Analytical & Numerical Modeling Methodology
Keywords: R.C.Multi-storey building, Soil-Structure Interaction, Stiffness and Maximum storey displacement. Title: Effect of Soil Structure Interaction on High Rise Building using ETABS Author: Azra Hanna Razvi J.B., Yashaswini R.K., Arun A.C., Vinay Kumar R., Goutham D.R.
Finite Element Results & Code Compliance
Abaqus offers industry-leading simulation capabilities. Powered by SIMULIA’s advanced technology from Dassault Systèmes, Abaqus drives sustainable innovation for companies of all sizes. Abaqus is a powerful suite for Finite Element Analysis (FEA) , enabling engineers and designers to optimize product development—from individual components to full assemblies. With advanced simulation capabilities, Abaqus enhances product performance while minimizing costs and risks. Its Finite Element Method (FEM) capabilities provide highly accurate structural simulations, realistic material behavior, and complex design optimization for real-world applications.
Scope & Practical Applications
- High-rise building and spatial frame analysis under seismic & wind loading
- Finite element continuum modeling in ABAQUS for non-linear material plasticity
- Classical lamination theory (CLT) and failure prediction for composite structures
- Spatial hazard mapping, landslide susceptibility, and catchment terrain analysis in QGIS
- Detailed bar bending schedules (BBS), structural drawings, and calculation booklets
3D Frame Analysis
Spatial modeling in ETABS & STAAD.Pro
Non-Linear FEA
Constitutive damage models in ABAQUS
QGIS Geomatics
DEM terrain modeling & catchment maps
Stiffness Solver
Direct matrix assembly in MATLAB
Code Compliance
IS 456, IS 1893, ACI 318, Eurocodes
Stress Envelopes
Critical axial, shear & moment vectors
Engineering Software & Technologies
Built using industry-standard engineering analysis platforms, numerical code solvers, and geomatics tools.
| Software Platform | Analytical Function & Role | Engineering Tier |
|---|---|---|
| ETABS v21 | Multi-story building analysis, response spectrum, P-Delta, wind & seismic lateral loads | Structural Core |
| STAAD.Pro Connect | 3D space frame analysis, steel connection design, foundation reaction extraction | Steel & Concrete |
| ABAQUS Standard | Non-linear continuum mechanics, concrete damaged plasticity, composite lamina failure | Non-Linear FEA |
| QGIS Desktop | Digital Elevation Model (DEM) hydrological mapping, slope stability raster overlays | Spatial Geomatics |
| MATLAB R2024b | Global stiffness matrix assembly, modal eigenvalue extraction, composite ABD matrix calculation | Mathematical Solver |
Analytical Engineering Workflow
Systematic integration from CAD architectural geometry and GIS terrain mapping to finite element simulation and code validation.
Geometry & BIM
(Concrete/Steel/FRP)
Spatial Analysis
Non-Linear Mesh
& Foundation Coupling
& Detailing
Verified Structural Diagrams & FEA Stress Contours
Advantages of the High Rise With Soil Structure Interaction Project
Why this project delivers superior academic grades and provides high technical evaluation standing.
Multi-Software Cross-Validation
Integrates ETABS, STAAD.Pro, and ABAQUS modeling to verify results across both linear and non-linear finite element solvers.
Rigorous Code Compliance
Fully compliant with IS 456, IS 1893 (Seismic Criteria), IS 800 (Steel Design), ACI 318, and Eurocode provisions.
Non-Linear Material Plasticity
Captures crack propagation, yield surfaces, and post-peak softening behavior using ABAQUS Concrete Damaged Plasticity.
Composite Lamination Analysis
Evaluates Classical Lamination Theory (CLT), ABD matrices, and Hashin/Tsai-Wu failure envelopes for high-strength FRP laminates.
Spatial Geomatics Coupling
Combines high-resolution QGIS Digital Elevation Models with slope stability analysis for accurate terrain hazard zoning.
Deterministic Matrix Solvers
Custom MATLAB scripts assemble global stiffness matrices [K] and extract natural frequencies without relying purely on black-box GUIs.
Second-Order P-Delta Verification
Accurately assesses geometric non-linearity and sway amplification induced by gravity and lateral wind/seismic combinations.
Detailed Structural Detailing
Delivers complete Bar Bending Schedules (BBS), ductile detailing drawings per IS 13920, and steel connection drawings.
Direct Industry Relevance
Builds competencies demanded by top structural design consultancies, EPC contractors, and infrastructure developers.
Complete Turnkey Package
Includes full model files (.EDB, .STD, .CAE), MATLAB code, calculation sheets, IEEE-format report, and viva defense presentation.
Sample MATLAB Code, FEA Output & Member Schedules
Representative excerpts illustrating the finite element stiffness assembly, command solver output, and structural capacity envelopes.
[*] Initializing Soil-Structure Interaction (SSI) Solver... [✓] Mohr-Coulomb Plasticity Constitutive Parameters Loaded ──────────────────────────────────────────────────────────────────────── [FOUNDATION] Applied Net Pressure: 220.00 kPa [CAPACITY] Ultimate Safe Capacity: 682.40 kPa [EVALUATION] Factor of Safety (Bearing): FOS = 3.10 > 2.50 (VERIFIED) [SETTLEMENT] Immediate Elastic Settlement: δe = 8.42 mm [SETTLEMENT] Primary Consolidation (10 yr): δc = 14.18 mm (Permissible < 40 mm) ──────────────────────────────────────────────────────────────────────── [✓] ABAQUS C3D8R 8-Node Soil Brick Continuum Mesh Convergence: 0.0028 Max Displacement Residual
[*] Generating critical member capacity envelope across factored combinations...
| Depth (m) | Stratum Description | Unit Wt γ (kN/m³) | Cohesion c' (kPa) | Friction Angle φ' | Settlement ΔH (mm) | Safety Status |
|---|---|---|---|---|---|---|
| 0.0 - 2.5 | Medium Dense Sandy Silt | 17.8 | 8.0 | 30° | 3.12 | STABLE |
| 2.5 - 7.0 | Stiff Overconsolidated Clay | 19.2 | 35.0 | 24° | 8.45 | STABLE |
| 7.0 - 14.0 | Dense Silty Sand with Gravel | 20.5 | 0.0 | 36° | 2.61 | STABLE |
| > 14.0 | Weathered Sandstone Bedrock | 23.0 | 120.0 | 42° | 0.40 | BEDROCK |
[✓] Structural Analysis Complete: Zero overstressed members. Design capacity factor > 1.0 throughout.
Frequently Asked Questions
Project Deliverables & Support
Everything needed from project inception to final viva defense — delivered with expert technical support.
Model Files
Input Decks
Scripts
Report
Slides
Drawings
Sheets
Q&A
Support
Extension