International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 07 | July 2024
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p-ISSN: 2395-0072
EFFECT OF SOIL STRUCTURE INTERACTION ON REINFORCED CONCRETE RETAINING WALL Karan K. Gaidhankar 1, Dr. Pradeep P. Tapkire2, Atul S. Chandanshive3 1Research Scholar at N.B. Navale Sinhgad College of Engineering, Solapur, Maharashtra, India-413255 2H.O.D. Civil Dept., N.B. Navale Sinhgad College of Engineering, Solapur, Maharashtra, India-413255
3Lecturer at Solapur Education Society’s Polytechnic, Solapur, Maharashtra, India-413255
---------------------------------------------------------------------***--------------------------------------------------------------------1.1 Aim & Objective Abstract - In this study, the interaction between soil and structure is a critical aspect influencing the performance and stability of reinforced concrete retaining walls. This study investigates the effects of soil structure interaction on such walls, aiming to enhance understanding and design methodologies. The interaction is examined through comprehensive analyses considering factors like soil type, wall geometry, and reinforcement details. Key parameters such as lateral earth pressure distribution, wall deflection, and overall stability are evaluated to ascertain how soil properties and structural design choices impact performance. Findings highlight the significance of integrated design approaches that consider both soil behavior and structural response, ensuring resilient and efficient retaining wall systems suitable for various environmental conditions and loading scenarios.
To find the effect of Soil Structure Interaction on counterfort retaining wall based on Geometrical & geotechnical parameters. The following are the objective of research work, Exclusive literature review is carried out and the unfocused area is identified which is consider as problem for proposed dissertation. The effect of soil structure interaction on counterfort retaining wall is proposed to carried out using following points, •
Analysis counterfort retaining wall sections for various heights & various loading condition.
Key Words: Soil-structure interaction, Retaining walls, Finite element method (FEM), Stability, Lateral earth pressure.
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Finite Element analysis of above-mentioned faces with and without soil structure interaction for counterfort retaining wall.
1. INTRODUCTION
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Identify the parameters influenced by soil structure interaction and develop non-dimensional chart for finding effect of soil structure interaction for geometrical & geotechnical parameters.
Retaining walls, such as Counterfort Retaining Walls (CRWs), are fundamental in civil engineering for supporting soil and managing changes in ground elevation. CRWs utilize counterforts on the backside to enhance stability and are typically built using materials like plain cement concrete or occasionally stone and brick masonry. Designing these walls requires careful consideration of potential failure modes: sliding, overturning, excessive settlement, and scour. Sliding occurs when soil moves horizontally along the base due to insufficient friction, making it a critical design factor. Overturning is prevented by ensuring the foundation and counterforts can withstand the moments caused by soil pressure. Settlement issues are managed through rigorous soil analysis and proper foundation design to minimize uneven settling. Furthermore, measures against scour, such as effective drainage and protective barriers, are crucial for maintaining the wall's stability over time. Engineers strive to optimize the cross-sectional design to ensure materials are efficiently used and the structure remains resilient against these challenges. This approach ensures CRWs not only meet immediate construction needs but also provide long-term reliability and safety across various engineering projects.
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2. Literature Review Soil Structure Interaction (SSI) for Cantilever Retaining Walls elucidates the intricate relationship between the structural element and the surrounding soil, highlighting the significance of understanding how external forces acting on the wall and internal forces within the ground mutually influence each other. This interdependence underscores the importance of considering soil-structure interaction in the design and analysis of counterfort retaining walls to ensure their stability and effectiveness in supporting soil masses and resisting external loads. Contributions of researchers are presented as follows, Sunil Gupta, Tsung-Wu Lin, Joseph Penzien, ChanShioung Yeh [1] described a hybrid model for the analysis of soil-structure interaction proposed which promises to be superior to the 19th time methods of analysis. The modelling achieved by partitioning the total soil-structure system into a near field and a far field with hemispherical interface. The
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