International Research Journal of Engineering and Technology (IRJET) Volume: 10 Issue: 07 | Jul 2023
e-ISSN: 2395-0056
www.irjet.net 2395-0072
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Comparative Analysis of Cantilever Retaining Wall With And Without Column-Beam System Naman Mishra 1, Anubhav Rai 2 1P.G. Student, Department of Civil Engineering, Gyan Ganga Institute of Technology & Science, Jabalpur, MP, India
2Prof & Head, Department of Civil Engineering, Gyan Ganga Institute of Technology & Science, Jabalpur, MP, India,
---------------------------------------------------------------------***--------------------------------------------------------------------When designing a retaining wall, several factors need to be Abstract - Retaining Walls are essential in civil engineering
considered, including the type of soil being retained, the height and slope of the wall, drainage conditions, and anticipated loads and forces acting upon the wall. Engineers and architects employ principles of structural analysis to determine the appropriate dimensions, reinforcement, and construction techniques necessary to ensure the stability and durability of the retaining wall.
projects, stabilizing soil, preventing erosion, and mitigating landslides. The successful design and analysis of retaining walls necessitate a deep understanding of soil mechanics, structural engineering principles, and the behaviour of different wall configurations. Among these configurations, the Cantilever Retaining Wall stands out due to its simplicity and effectiveness in resisting lateral earth pressures. However, when dealing with taller retaining walls, incorporating a column beam system can yield more economical outcomes. This research aims to comprehensively analyse cantilever retaining walls with and without a column-beam system. The research involves manual calculations and analysis using the STAAD Pro software and Excel spreadsheets for design optimization. The study strictly adheres to the guidelines outlined in the Indian Standard IS 456:2000 for reinforced concrete structures, ensuring compliance with industry standards. The research undertakes a comprehensive examination and design of both the Cantilever Retaining Wall (CRw) and the Column Beam Cantilever Retaining Wall (CBCRw) for a span of 35 meters and heights ranging from 3 meters to 9 meters, including their respective footings. By evaluating the construction cost of walls, this study concludes that CBCRw is more economical than the CRw.
Use of retaining walls in basements opens a world of possibilities for space utilization and expansion. For Residential, commercial, or institutional purposes, these walls play a vital role in creating functional, safe, and attractive below-ground spaces. 1.1. TYPES OF RETAINING WALLS • Gravity Retaining Wall
Key Words: Cantilever Retaining Wall, Column-Beam System, Stability, STAAD Pro, IS 456:2000, CRw, CBCRw
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Constructed using dense materials like concrete or stone.
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Suitable for retaining moderate heights.
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Not economical for design.
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A retaining wall serves as a construction element that is responsible for supporting and restraining soil or other substances at different elevations. It finds widespread application in the construction industry, serving to prevent erosion, control slopes, and create level surfaces on uneven ground. Retaining walls can be found in a variety of settings, including residential, commercial, and infrastructure projects.
Impact Factor value: 8.226
Min. reinforcement to be used in the wall to reduce the size of the wall.
• Cantilever Retaining Walls.
The primary objective of a retaining wall is to withstand the lateral pressure exerted by the retained soil or substances. In the absence of a retaining wall, the natural tendency of soil is to move downward due to the force of gravity. This movement can result in slope instability, erosion, and potential damage to nearby structures or areas. By constructing a retaining wall, the soil is effectively confined and prevented from sliding or collapsing.
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Rely on their weight to withstand soil pressure.
• Semi-gravity Retaining Wall
1. INTRODUCTION
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Made of reinforced concrete & Designed with a base slab and a vertical stem.
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Relatively economical for design.
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Suitable for retaining moderate to high heights.
• Counterfort / Buttressed Retaining walls.
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Have additional vertical supports called counterforts on the backside of the wall to help distribute the lateral forces and provide extra stability.
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Suitable for higher retaining wall heights.
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