International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 04 | Apr 2024
p-ISSN: 2395-0072
www.irjet.net
IMPROVEMENT OF THE LONG SPAN BRIDGE AFTER FIBER REINFORCED POLYMER JACKETING WITH LATERAL LOAD Laraib Ahmad1, Mr. Ushendra Kumar2 1Master of Technology, Civil Engineering, Lucknow Institute of Technology, Lucknow, India
2Head of Department, Department of Civil Engineering, Lucknow Institute of Technology, Lucknow, India
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Abstract - Long-span bridges represent vital components of
span bridges. By shedding light on the complex dynamics of these iconic structures and providing valuable recommendations for seismic design and retrofitting, this research advances the field of structural engineering. Ultimately, it ensures the safety and functionality of long-span bridges in seismically active areas or zones with high levels of seismic activity. In analyzing two models of a bridge using parameters like lateral force on the bridge, natural period, maximum displacement of the bridge, overturning moment on the bridge, mode shape, and self-weight of the bridge; we can gain further insight into how these structures behave under different conditions. This knowledge can inform better design choices that improve safety measures against potential damage from earthquakes. Long-span bridges play a crucial role in modern transportation infrastructure. Their unique designs require careful consideration when it comes to ensuring their resilience against earthquakes. Through comprehensive studies like this one that examine various aspects like static analysis and FRP jacketing retrofitting techniques alongside advanced technical methods such as energy dissipation devices or isolation bearings; we can make informed decisions that keep these structures safe while advancing our understanding of structural engineering as a whole.
infrastructure, encountering diverse environmental and operational exigencies over their operational lifespan. This scholarly review scrutinizes the efficacy of Fiber Reinforced Polymer (FRP) jacketing as a means to augment the performance of long-span bridges when subjected to lateral loads. Synthesizing extant literature, the review evaluates the structural behavior, performance enhancement, and longevity of long-span bridges retrofitted with FRP jackets. The examination delineates the fundamental mechanisms underlying FRP jacketing, elucidating its capacity to bolster the flexural strength, stiffness, and ductility of bridge elements. Moreover, the discussion encompasses the impact of lateral loads, such as wind, seismic events, and vibrations induced by traffic, on the behavior of long-span bridges reinforced with FRP jackets. Emphasis is placed on the importance of meticulous design, material selection, and construction methodologies to ensure the efficacy and enduring resilience of FRP retrofitting solutions. Case studies spanning diverse geographic regions and bridge typologies are analyzed to underscore the practical application and performance of FRP jacketing under lateral loading conditions. The review also confronts challenges and constraints associated with FRP retrofitting, including issues of adhesion, environmental degradation, and the imperative for sustained maintenance. Through its comprehensive examination, this review furnishes valuable insights into the optimization of long-span bridge performance via FRP jacketing under lateral loading circumstances, thereby providing guidance for researchers, engineers, and practitioners engaged in bridge retrofitting and maintenance endeavors.Long-span bridges are vital components of transportation infrastructure due to their vast lengths and intricate structural designs. However, their susceptibility to seismic forces makes it crucial to conduct a thorough seismic study to ensure their resilience and safety during earthquake occurrences. This study delves into the various facets of seismic analysis for long-span bridges, including Static analysis, adherence to seismic design guidelines, and the important role of Fibre Reinforced Polymer (FRP) jacketing. The research explores seismic retrofitting techniques (FRP Jacketing) for existing structures and emphasizes the significance of understanding the behavior of specific bridge components and materials under seismic loads. The use of advanced technical methods such as energy dissipation devices and seismic isolation bearings is also covered in the study to enhance the seismic resilience of long-
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Impact Factor value: 8.226
Key Words: Long-span bridges, Seismic analysis, Seismic design codes, Seismic retrofitting, Transportation infrastructure, FRP Jacketing, ETABS.
1.HISTORY Throughout history, the practice of jacketing bridge structures has evolved in tandem with advancements in engineering and construction materials. Initially, with the use of materials like stone, wood, and later iron, repairs were localized, focusing on replacing damaged components rather than reinforcing entire structures. However, the emergence of steel in the late 19th century allowed for longer and more ambitious bridge designs, prompting the need for jacketing to address issues such as corrosion and fatigue. Steel jackets were employed to strengthen vulnerable areas and support sections experiencing excessive loads. As concrete became a primary construction material in the early 20th century, jacketing techniques adapted to reinforce concrete elements, often involving the application of additional layers of concrete or steel reinforcement. Over time, advancements in materials science introduced specialized materials like fiber-
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