International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 06 | Jun 2024
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A Research on Behavior of Connected Tall Buildings with Lateral Load Resisting Systems and Dampers Under Seismic Load Vishvesh Jayswal1, Aakash Suthar2, 1M. Tech Student, L.J. University, Ahmedabad
2Aakash Suthar, Head of Department, Structural Engineering Department, L.J. University, Ahmedabad, India.
---------------------------------------------------------------------***--------------------------------------------------------------------control systems. Structural control systems can be of Abstract: -In addition to issues with land acquisition, tall
numerous sorts, such as hybrid, semi-active, active, and passive. In this instance, a linear viscous damper a passive control system is employed. The Viscous Damper diagram and mathematical model are displayed in (Figures 1(a) and 1(b). Passive vibration control systems, or LVDs, use the motion of the structure to generate reactive forces. Velocitydependent linear viscous dampers provide more dampening to the structure without adding more rigidity. They function according to the idea that fluid passing through an opening creates the force needed to stop a building from moving during a seismic event. The damper is composed of a cylinder that is filled with a viscous fluid, such silicone or oil, and is attached to the structure by a piston rod that passes through a chamber that is filled with fluid. Damper force is produced by the differential pressure that is created across the piston head. The relative velocity between a damper's ends determines the force inside the viscous damper.[11]
buildings are becoming increasingly common. In general, a linked tall building is a skyscraper or high-rise that is physically joined to one or more neighboring structures by bridges or other structural components. It provides customers with horizontal connection in addition to improving structural performance under lateral stresses. Various lateral load resisting systems and vibration control systems must be implemented in order to regulate the lateral displacement of a tall building. This study compares linear viscous dampers and shear wall systems in tall buildings. The study examines models of interconnected, (25-story) tall structures with varying skybridge and damper locations. Reduction of several reactions such as displacement, acceleration, storey drift, etc. has been proven to be more successful in the constructions associated with Sky Bridge and dampers.
Key Words: (Connected Tall Building), (Shear Wall), (Bracing), (Damper), (Seismic load) & (wind load).
The relative velocity between a damper's ends determines the force inside the viscous damper. The formula for it is: -
1. INTRODUCTION: -
Fdi=Cdi(udi)a.
A building is classified as a "tall building" by (IS:6700: 2017) if its height is more than 50 meters but less than or equal to 250 meters. There is no set standard for what constitutes a "tall" structure. "Super Tall Building" refers to a structure taller than 250 meters. [3] Towering structures known as skyscrapers are usually found in crowded urban areas with expensive land. In the construction industry, lateral loadresisting devices are utilized to withstand lateral forces including wind and seismic forces. Shear wall structures, moment frames, braced frames, framed tube structures, diagrid structures, and so on are a few examples of these systems. These buildings are additionally protected from the effects of oscillations by vibration control devices, such as base isolation systems and dampers.
Where 𝛼 = damper exponent, 𝐹𝑑𝑖 = damping force of the it damper, and 𝑢𝑑𝑖 = relative velocity between the two ends of the damper, which is what has to be taken into account. The damper exhibits linear viscous damping behavior when α=1, and non-linear viscous damping behavior when α is less than unity.[1]
A shear wall structure is a kind of building construction where walls are used to resist wind and seismic stresses and to offer lateral stability. These walls, which are frequently seen in both tall and low-rise structures, are in charge of supporting columns and vertical loads.[1] Figure 1(a): Schematic diagram of fluid viscous damper [1]
The reactivity of structures to dynamic loads, such wind and earthquakes, is lessened by the employment of structural
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