International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 11 | Nov 2024
p-ISSN: 2395-0072
www.irjet.net
A Review on Comparative Seismic Analysis of a High-Rise RCC Building Provided with the Shear Wall and Bracing System Suyash M. Yedage1, 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 - The seismic performance of multi-storey
Over the past few decades, considerable research has been conducted to understand the behaviour of RC buildings equipped with shear walls and bracing systems under seismic loading. Numerous studies have focused on optimizing the placement, configuration, and design of these systems to improve the seismic performance of buildings. The findings from these studies highlight the significant role that shear walls and bracing systems play in enhancing the stability, safety, and overall resilience of buildings subjected to earthquake forces. Additionally, advancements in computational tools and software, such as ETABS and response spectrum analysis, have allowed engineers to conduct more accurate simulations and analyses, enabling better-informed design decisions.
reinforced concrete (RC) buildings is a critical concern in earthquake-prone regions, with shear walls and bracing systems serving as primary structural elements to resist lateral seismic forces. This review paper synthesizes the findings from a diverse set of studies focused on the effectiveness, optimization, and analysis of shear walls and bracing systems in RC buildings. The research covers a broad spectrum of topics, including the impact of shear wall placement on building performance, comparative analyses of steel and concrete bracing systems, and the role of advanced simulation tools such as ETABS for dynamic analysis. Key findings from the reviewed literature indicate that shear walls significantly enhance the lateral stiffness and stability of highrise buildings, reducing displacements and improving overall structural resilience during seismic events. In contrast, bracing systems, particularly steel braces, offer a cost-effective and flexible alternative, though their effectiveness in very tall buildings may be limited compared to shear walls. Additionally, the research explores the role of coupled shear walls, hybrid systems, and novel material innovations in further improving seismic performance.
1.1 Shear Wall In structural engineering, a shear wall is a vertical component of a lateral load-resisting system designed to counteract horizontal forces such as wind and seismic loads. These walls are commonly found in tall buildings or in regions prone to strong winds or seismic activity. Shear walls are essential for resisting lateral forces generated by earthquakes, wind, or occasionally horizontal ground pressure or hydrostatic forces. They provide both lateral and vertical load support, in addition to functioning as partitions within the structure. As illustrated in Figure 1.1, shear walls extend from the foundation up to the roof level. They are particularly suitable for high-rise buildings due to their combination of strength and effective stiffness.
Key Words: RCC building, Seismic analysis, Response spectrum method, Shear wall, Bracing system, ETABS, etc.
1. INTRODUCTION Seismic resilience is a critical consideration in the design of multi-storey reinforced concrete (RC) buildings, particularly in regions prone to high seismic activity. Earthquakes impose complex lateral forces on buildings, and without appropriate structural interventions, these forces can lead to severe damage, structural failure, or even loss of life. Among the various structural systems used to mitigate seismic forces, shear walls and bracing systems have proven to be highly effective in improving the lateral load resistance of buildings. Shear walls, typically vertical structural elements, act as a stiffening mechanism to resist horizontal forces generated by seismic events. Similarly, bracing systems, which include various configurations of steel and concrete braces, provide additional stiffness and strength to the structure, reducing deformations during an earthquake.
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In buildings subject to wind or seismic forces, shear walls play a crucial role in resisting lateral loads. These walls can be either connected, non-planar assemblies or independent, planar structures. For buildings up to about 35 stories, shear walls are often more cost-effective and rigid than alternative lateral systems like rigid frames. In low to mid-rise buildings, it is typical for shear walls to carry the majority of the lateral loads, while the frame is primarily designed for vertical gravity loads. Research has shown that shear wall structures perform effectively during seismic events, with ductility being a key consideration in their design.
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