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 PERFORMANCE BASED DESIGN OF SHEAR WALL STRUCTURES USING PUSHOVER ANALYSIS Swaraj V. Surve1, N. G. Gore2 1PG Student, Dept. of Civil Engineering, Mahatma Gandhi Mission's College of Engineering and Technology
(MGMCET), Kamothe, Navi Mumbai, Maharashtra, India
2Professor, Dept. of Civil Engineering, Mahatma Gandhi Mission's College of Engineering and Technology
(MGMCET), Kamothe, Navi Mumbai, Maharashtra, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Performance-Based Design (PBD) offers a
optimizing structural design to enhance safety and resilience during seismic events. Pushover Analysis, therefore, plays a crucial role in ensuring that buildings designed using PBD can withstand and function effectively during earthquakes, mitigating damage and safeguarding occupants.
targeted approach to enhancing the seismic performance of structures, moving beyond traditional safety compliance to achieve specific performance goals. This review explores the application of pushover analysis—a nonlinear static method— for optimizing shear wall structures under seismic forces. Shear walls, crucial for lateral stability, are examined in terms of configuration, material selection, and reinforcement to maximize structural resilience. PBD not only identifies weak points through detailed performance evaluation but also ensures efficient material use and cost savings. By integrating advancements in design methodologies and innovative materials, PBD enhances both safety and functionality, particularly for critical infrastructure. This paper synthesizes current research to highlight the role of PBD in reducing repair costs, ensuring operational continuity, and promoting sustainable practices, while identifying gaps and proposing future directions for further improving seismic design strategies.
1.1 Performance Levels in Performance-Based Design Performance-Based Design (PBD) is an advanced structural engineering methodology that moves beyond traditional design codes by focusing on how a building will perform during seismic events. Unlike conventional approaches that often aim for compliance with basic safety requirements, PBD sets specific, measurable performance objectives tailored to a building’s intended use and occupancy. These objectives help ensure that structures remain functional, resilient, and safe, even under the extreme conditions caused by earthquakes. By focusing on performance rather than simply meeting code-prescribed safety thresholds, PBD offers a more refined and adaptable approach to earthquake-resistant design.
Key Words: Performance-Based Design, Pushover Analysis, Seismic Resilience, Shear Wall Structures, Earthquake Engineering, Structural Optimization.
The performance objectives in PBD are organized into four distinct levels, each reflecting a different degree of damage tolerance and building usability. These levels not only provide clear targets for engineers to design to but also offer a flexible framework that allows for tailored solutions depending on the building's role, location, and importance.
1. INTRODUCTION Performance-Based Design (PBD) is an advanced approach to structural engineering that aims to predict how buildings will perform under specific conditions, particularly during seismic events. Unlike traditional design methods that primarily focus on meeting basic safety standards, PBD sets predefined performance objectives that ensure structures meet specific goals such as operational functionality, immediate occupancy, life safety, and collapse prevention. This allows for a more tailored and effective design that prioritizes both the safety and usability of the building during and after an earthquake.
Operational Level (O): This level represents the highest priority for functionality, where the building should experience little to no damage after a minor earthquake. Critical infrastructure, such as hospitals, emergency response centres, and data centres, are often designed to meet this standard. The goal is to ensure that these buildings remain fully operational immediately after an earthquake, with no disruption to their essential services. Such buildings are expected to withstand minor tremors without any impact on their functionality.
A key tool in PBD is Pushover Analysis, a nonlinear static method used to evaluate a structure's capacity to resist seismic forces. In this method, lateral forces are gradually applied to the structure, simulating the effect of increasing seismic loads until failure occurs. This incremental approach helps identify the building’s weak points and assesses its overall performance, providing valuable insights for
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Immediate Occupancy (IO): For buildings designed at the Immediate Occupancy level, the structure must allow immediate use following a moderate earthquake. The building should sustain minimal damage, with no need for
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