International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 12 | Dec 2024
p-ISSN: 2395-0072
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A Review on Comparative Seismic Analysis of Multistrorey Building for Different Shapes Jayesh A Mane1, Prof. V. V. Nair2 1PG student, Department of Civil Engineering, Padmabhooshan Vasantraodada Patil Institute of Technology,
Budhgaon, Sangli, Maharashtra, India.
2Asssistant Professor, Department of Civil Engineering, Padmabhooshan Vasantraodada Patil Institute of
Technology, Budhgaon, Sangli, Maharashtra, India. ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Seismic analysis of multistorey buildings is
loads. However, with urbanization and architectural innovation, irregularly shaped buildings, such as L-shaped, Ishaped, and C-shaped structures, have become more prevalent. These irregular shapes, while aesthetically appealing or functionally advantageous, present unique challenges in seismic analysis. The non-uniform distribution of mass and stiffness in these buildings can result in torsional effects, which complicate the prediction of seismic response and require more advanced design strategies.
crucial in ensuring their safety and stability during earthquakes. The shape of a building significantly influences its seismic performance, as it affects the distribution of mass, stiffness, and the way lateral forces are resisted. This paper presents a comparative seismic analysis of multistorey buildings with different geometric configurations, including rectangular, L-shaped, I-shaped, and C-shaped plan layouts. The study explores how these various shapes respond to seismic loads, focusing on factors such as Base shear, Storey displacement and Storey drift. Seismic analysis techniques, such as linear static, dynamic response spectrum, and time history analysis, are reviewed for each building shape. The findings reveal that regular shapes like rectangular and square buildings generally exhibit more predictable and stable responses to seismic forces, while irregular shapes (such as Lshaped I-shaped structures) experience more complex dynamic behaviors, often requiring additional reinforcement and specialized design strategies. Overall, this review underscores the importance of selecting appropriate building shapes and utilizing advanced seismic analysis methods to ensure the safety of multistorey buildings in earthquake-prone regions.
The objective of this paper is to conduct a comparative seismic analysis of multistorey buildings with different shapes, including regular and irregular configurations. By evaluating the dynamic response of various building geometries under seismic loading, this study aims to highlight the key factors influencing seismic performance. Furthermore, the paper discusses the role of modern seismic design techniques, including base isolation and damping systems, in improving the resilience of irregular buildings. The findings from this review will offer valuable insights into how building shape affects seismic behavior and provide recommendations for optimizing structural design to ensure safety and performance in earthquake-prone regions.
Key Words: Multistorey Buildings, Seismic analysis, Response spectrum Analysis, Building Shapes, Structural Performance, ETABS, etc.
1.1 Shapes
1. INTRODUCTION Seismic performance is a critical consideration in the design of multistorey buildings, especially in regions prone to earthquakes. The ability of a structure to withstand seismic forces largely depends on its geometric configuration, as different shapes exhibit varying responses to lateral forces induced by ground motion. Building shapes not only influence the distribution of mass and stiffness but also play a significant role in the torsional behavior of the structure. For multistorey buildings, ensuring stability during seismic events is paramount, as excessive vibrations and uneven force distribution can lead to structural damage or failure.
Fig.1.1 rectangle shape (https://www.mdpi.com/sustainability/sustainability-0901708/article_deploy/html/images/sustainability-0901708-g001.png)
Traditionally, rectangular and square buildings have been the most common configurations in seismic design due to their symmetry and predictable performance under lateral
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