International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 05 | May 2024
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p-ISSN: 2395-0072
Study of wind loads on RC building resting on sloping ground Darshan Ramachandra Todkar 1, U.R. Awari 2, 1P.G. Student, Dept. of Civil Engineering, AISSMS College of Engineering, Pune, Maharashtra State, India 2Professor, Dept. of Civil Engineering, AISSMS College of Engineering, Pune, Maharashtra State, India
---------------------------------------------------------------------***--------------------------------------------------------------------The force that results from wind blowing against a building and acting on its heights is referred to as the resulting force acting on the elevations is called the ‘wind "wind load." To prevent structural collapse, wind forces load’. The building’s structural design must absorb wind must be safely and effectively absorbed by the building's forces safely and efficiently and transfer them to the structural design and sent to the foundations. Wind loads foundations in order to avoid structural collapse. Wind can be challenging to anticipate with accuracy since they loads will typically depend on the wind velocity and the usually depend on the wind velocity and the form (and shape (and surface) of the building, and is why they can be surface) of the building. Any consequences of over- or difficult to predict accurately. The building shape may under-pressure may be exacerbated by the design of the exacerbate any over- or under-pressure effects. On the building. Wind overpressures on the windward side windward side (facing the wind), wind overpressures may (facing the wind) can force windows in, while under blow windows in, while on the leeward side (sheltered pressure (suction) on the leeward side (sheltered from the from the wind) under-pressure (suction) may blow wind) can force windows out. A glass-clad building with a windows out. Hill buildings differ from plains buildings in very smooth profile will tend to deflect the wind far more that they are highly uneven and asymmetrical in effectively than a sculpted or textured profile, as will a horizontal and vertical planes, as well as torsionally circular building compared to a square shape. linked. Because very few plain grounds are available in hilly locations, structures must be built on slopes. R.C.C Mechanism of Wind Loads on Structures structures with columns of varying heights at same story have sustained more harm in the columns with lesser Any kind of structure's design must take wind load into height than in the columns with greater height in the same account. The load exerted by wind on a structure's floor. A case study B+S+18 building has been considered in exterior is measured in kN per square meter. This is this research work. Step back and step back set back contingent upon: configurations are included to the actual plan of the building in our research. Building is considered resting • The angle at which the wind strikes the structure sloping ground with varying angle of 0°, 15°, 20° and 25°. • The shape of the structure (height, width, etc.) After the analysis we can conclude that Slope of building is maintained by increasing the height of columns from one Strengthening vulnerable building areas is necessary to side as compared to other side which creates additional prevent wind damage. The foundation, roof, and walls all torsional effect on the building. There is significant need to be sturdy, as do the fasteners that hold them increase in maximum story drift of the structure due to together. A continuous load path from the roof to the sloping ground. Also there is reduction in maximum story foundation—connections that hold all structural drift for step back set back configuration as compared to components together and are capable of withstanding step back configuration. various wind loads that could push and pull on the building during a storm—is necessary for a structure to Key words: Wind load analysis, step back, step back set withstand hurricanes and light tornadic winds. back, ETABS, story drift
Abstract - As the wind blows against a building, the
Wind exerts three types of forces on a structure:
1. INTRODUCTION
• Uplift load - Wind flow pressures that create a strong lifting effect, much like the effect on airplane wings. Wind flow under a roof pushes upward; wind flow over a roof pulls upward.
Every building's structure is susceptible to many loads, the first of which is gravity's pull on the structure. In a similar vein, the "live load"—the weight of the people, furnishings, fixtures, etc.—must be supported by the building. In addition to bearing its own weight, the structure must withstand loads from the wind, an earthquake, etc. Always design and build buildings, other structures, components, and cladding to withstand wind loads.
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Impact Factor value: 8.226
• Shear load – Horizontal wind pressure that could cause racking of walls, making a building tilt. • Lateral load – Horizontal pushing and pulling pressure on walls that could make a structure slide off the foundation or overturn.
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