International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 10 | Oct 2024
p-ISSN: 2395-0072
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Analysis of Seismic Pounding between Two Adjacent Reinforced Concrete Buildings Kanifnath Baban Shelke1, Dr. P. K. Kolase2, 1P.G. Student, Dept. of Civil Engineering, Pravara Rural Engineering College, Loni, Maharashtra State, India 2Professor, Dept. of Civil Engineering, Pravara Rural Engineering College, Loni, Maharashtra State, India
---------------------------------------------------------------------***--------------------------------------------------------------------might sustain this kind of damage. If the floors of these structures are often built to the same height, pounding building failures during earthquake events in the past, damage is usually not as severe; however, if this is not the thus it is crucial to comprehend building failure patterns case, there are two issues. Because the floors of nearby and the causes of those failures in order to lower the structures are at different altitudes, each structure's floor building failure ratio and strengthen the building against may operate as a ramp, hammering the other building's future seismic occurrences. Seismic-induced pounding is columns. When a building is higher than the other, the one of the potential structural damages that most higher building has a significant stiffness discontinuity frequently results in significant building damage and has while the lower building experiences an unexpectedly high been seen in a number of previous earthquakes. The use of amount of lateral load. Even if a minimum seismic spacing viscous dampers is being researched in the current study is specified by many modern codes, it is still insufficient. to prevent or lessen the impact of pounding between Globally, seismic rules and laws stipulate that, in order to nearby buildings. Two nearby buildings, a 15-story prevent pounding, there must be a minimum space building and an 11-story building in SAP2000, are between neighboring structures that equals the relative evaluated to demonstrate the behavior and impact of displacement demand of the two potentially colliding viscous dampers. An examination of the linear time structural systems. The previous seismic course did not history of these two nearby buildings that experience provide clear rules to avoid pounding because of economic ground motion during earthquakes has been conducted. factors, such as maximum consumption requirements, For time history study, El Centro earthquake acceleration particularly in densely populated urban regions. Around record (NS) is utilized. The building's behavior in relation the world, there are a lot of buildings that are either to the pounding effects is compared and interpreted using directly next to one another or already in contact and storey drift and inter-story drift values. could sustain catastrophic harm. Key words: viscous dampers, pounding, reinforced The simplest and most efficient way to mitigate pounding concrete buildings and lessen damage caused by pounding is to provide enough separation; however, because of the high cost of 1. INTRODUCTION land, this is not always possible. An alternative to The simple definition of "pounding" is the collision of providing a seismic separation gap is to lessen the impact buildings that are constructed close to one another. The of pounding by aligning floors in nearby buildings and inadequate distance between the nearby buildings is the reducing lateral motion drift. To enhance the performance main cause of the seismic pounding. A multitude of other of structures lacking enough seismic separation between factors could also be involved, including the nontwo buildings, several vibration reduction techniques can compliance with codal provisions, especially for lateral be taken into consideration as an additional strategy to and torsional stiffness due to inadequate building lessen the impact of pounding during seismic excitation. configuration and structural framing system, the One method is to connect the buildings next to each other, unexpected severity of the ground motion, and cumulative which eliminates interactions by allowing forces to flow tilting caused by foundation movement. The majority of between the structures. For this objective, tests have been older structures that were built prior to the introduction conducted on viscoelastic elements and stiff linkages. and widespread use of earthquake-resistant design Adding more stiff beams to connect neighboring concepts exhibit this phenomena. Two kinds of pounding structures is another way to create a stiff link. Impacts damage are often possible. The first is damage that occurs may be partially absorbed and connections between locally at the site of impact, and the second is damage that nearby structures may also have certain energy occurs globally as a result of the collision's energy and dissipation characteristics. Structural conflicts between momentum transfer. The force of the collision causes local two neighboring structures can be controlled and damage, whilst the dynamic features of both buildings at eliminated with the use of joining elements. In the current the moment of the contact determine global damage. To study, the pounding effect is reduced and adjacent maximize space use, buildings that are constructed buildings are connected using fluid viscous dampers. without being divided all the way up to property lines
Abstract - There have been many various kinds of
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