International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 06 | Jun 2024
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p-ISSN: 2395-0072
Comparative Analysis of Raft Foundation, Raft with Top Cap & Pile Raft Foundation Shaktisinh Raol1, Aakash Suthar2, 1M.Tech Student, L.J. University, Ahmedabad
2Aakash Suthar, Professor, Structural Engineering Department, L.J. University, Ahmedabad, India.
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improve the structural components of tall buildings. This includes assessing structural responses to diverse loads, ensuring compliance with safety regulations, and optimizing overall performance. Simultaneously, detailed foundation modelling with CSI SAFE software highlights the essential role of foundations in maintaining the structural integrity of high-rise buildings.
Abstract - This study provides a detailed comparative analysis of three different foundation systems: Raft Foundation, Raft with Drop, and Pile Raft Foundation. Utilizing advanced structural analysis and design software, the research explores the structural and geotechnical behaviors of these foundations. The performance is evaluated under various loading conditions and soil profiles, focusing on critical factors such as soil pressure, punching shear, settlement, and overall structural integrity. CSI SAFE software's finite element analysis capabilities are employed to model bearing capacity, settlement characteristics, and the interaction between the foundation and soil. This approach offers a comprehensive understanding of the geotechnical aspects involved.
2. OBJECTIVE
Key Words: Foundation Design, Raft Foundation, Pile Raft foundation, Raft with Top Cap, Structural Design, Seismic Load, CSI SAFE, Etabs.
1. INTRODUCTION
Choosing the appropriate foundation system for high-rise buildings is crucial for their stability and resilience in structural engineering. As urban landscapes continue to develop vertically, a deeper understanding of foundation design becomes increasingly important. This study utilizes ETABS and CSI SAFE software to perform a comprehensive comparative analysis of Raft Foundation, Raft with Top Cap, and Pile Raft Foundation, with the main objective being to evaluate and compare their geotechnical responses and structural performance in high-rise buildings.
By focusing on the complex interactions between these foundation systems under different seismic zones and soil types, this research aims to provide valuable insights for practitioners and stakeholders. These insights will facilitate informed decision-making in selecting foundation systems that effectively address the challenges of various seismic conditions and soil profiles. The ultimate aim is to contribute to the ongoing enhancement of foundation design techniques, ensuring the structural integrity and long-term resilience of high-rise buildings in dynamic urban environments.
3. METHODOLOGY The multistory building with a different seismic zone and soil condition analyzed and designed from Etabs software after that export base reactions file for CSI SAFE software then import this file to safe software. In safe there are majorly five steps for designed and analysis of foundation: Import ETABS Data File Define, Draw, Assign, Analysis, Design. For analysis of RCC structures there must be require good amount of knowledge of IS codes and Fundamental of structures. Total 27 models are made for the exact data validation and for comparison
The application of ETABS for structural analysis reflects a commitment to utilizing advanced computational tools to
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To compare Raft Foundation, Raft with Top Cap, and Pile Raft Foundation using structural analysis and design software. To support ongoing advancements in high-rise building foundation design methodologies, ensuring long-term resilience and structural integrity in dynamic urban environments. To provide a comprehensive understanding of different foundation types, their advantages and disadvantages, suitable applications, and design and construction considerations. To research and evaluate various foundation types used in the construction industry, exploring their designs and the use of alternative materials to enhance firmness, durability, and environmental sustainability. To develop robust, cost-effective, and environmentally friendly foundation bases for both bungalows and tall buildings. To examine factors such as soil bearing capacity, settlement, and seismic behaviour in relation to Raft, Raft with Top Cap, and Pile Raft foundations.
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