Bilateral Interference of Wind Loads Induced on Duplicate Building Models of Various Shapes

Pal, Supriya; Raj, Ritu; Anbukumar, S.

doi:10.1590/1679-78256595

Cited by 12 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Through few published studies on interference effects in unusually shaped buildings, it was found that this parameter has significant influence on interference effects. To quantify this influence, local pressure distribution was investigated by Pal et al (2021aPal et al ( , 2021b, finding maximum suctions in a triangular model 40% higher than in square models and moments in the cross-wind direction dominating the overall model behavior due to its unsymmetrical crosssectional shape.…”

Section: Introductionmentioning

confidence: 99%

Interference effects mapping on the static wind loading of a tall building

Lavôr

Brito

Loredo-Souza

2023

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

Wind-induced loading on buildings may be altered due to presence of upwind structures. These variations are quantified by the interference factors (IFs), which is determined experimentally for each case analyzed, since obtaining this quantification in codes and standards is still impractical due to the complexity of the multiparameters involved. To understand the influence of some of these parameters on the interference effects, contour plots and power spectra density were presented for IFs corresponding to aerodynamic coefficients of the along-wind and cross-wind force, as well as for torsion. Wind tunnel tests were conducted applying the synchronous pressure measurement technique. Interference arrangements with one and two upstream interfering buildings were investigated for different wind angles, relative positions and terrain roughness. Results indicate that the shielding effect is predominant in most of the studied cases. Nevertheless, the amplification effects are generally present in specific configurations and are usually caused by channeling and buffeting effects, as well as vortex shedding.

show abstract

Section: Introductionmentioning

confidence: 99%

Interference effects mapping on the static wind loading of a tall building

Lavôr

Brito

Loredo-Souza

2023

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

show abstract

“…The case study revealed that numerical simulations can be reliable for more complex wind simulations and corner modified building model show better performance to reduce drag force. [20] experimentally investigated experimentally the wind effects on fish plan shaped building model and discussed the pressure distribution pattern using pressure contours.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Wind Loads on Y Plan-Shaped Tall Building Using CFD

et al. 2022

Self Cite

View full text Add to dashboard Cite

The increase in the population is at an exponential rate, and the available land is in the form of irregular shapes. That is why irregular shapes are very commonly built. Wind load increases with respect to height, so wind load evolution is necessary for such high-rise structures. Wind forces majorly depend on the plan's cross-sectional shape. Therefore, for an irregular shape, an investigation is needed for tall buildings. This paper demonstrates a detailed study on velocity stream line, external pressure coefficients, pressure distribution on the surfaces of the building and the turbulence kinetic energy for the Y-shaped plan for tall buildings under wind excitation for wind incidence angles of 0o to 180o. k- turbulence model is utilized to solve the problem using computational fluid dynamics techniques in ANSYS for terrain category II as per IS: 875 (Part3), 2015. Wind ward faces in all building models show positive pressure distribution, while the leeward faces are under the effect of negative pressure distribution. Wind load can be reduced on building models by modifying the corners, such as chamfering, rounding, and double recessed. The variation of pressure distribution on different faces of a "Y" plan shaped tall building for 0° and 180° is investigated using ANSYS CFX, and the pressure contours are plotted for all the faces of different "Y" shaped buildings to compute the effect of corner modification on pressure distribution. In this research, it was found that building models with rounded corners are highly efficient in resisting the wind load. Doi: 10.28991/CEJ-2022-08-02-06 Full Text: PDF

show abstract

“…According to the literature, modifying the shape of an entrant's corner by roughly 10% of the building width can reduce wind effects on high-rise buildings. Some researchers also evaluated the effect of interference of principal building models; for example, Pal et al [22] estimated drag and lift force coefficients on interfering square and fish plan shape models; Nagar et al [16] have studied interference effects on "H" and square model; Pal and Raj [23] evaluated the full blockage condition for various plan shapes of tall building models; Pal et al [24] studied interference effect of twin building models on square plan shape and remodelled triangle shape model; Nagar et al [25] studied interference effect on two "+" shape models. Few important outcomes of interfering studies are as follows: pressure distribution is symmetric for isolated building, and drag and lift force coefficient magnitude is based on the position and geometric shape of the neighbouring building model.…”

Section: Introductionmentioning

confidence: 99%

Wind Excited Action around Tall Building Having Different Corner Configurations

Meena

Raj

Anbukumar

2022

Advances in Civil Engineering

Self Cite

View full text Add to dashboard Cite

Aeroelastic instabilities are common in square or rectangular plan shape structures due to the development of powerful vortices by the rolling motion of the separated shear layers. Windward corner modifications such as corner cut, recession, rounded, and slotted help to reduce instabilities. Codal recommendations about common shapes like square, rectangle, triangle, and circular shapes are available in different international standards, but they did not provide the detailed analysis results for the different regular shapes with corner configurations. Although analysis was performed on various plan shapes of tall buildings using the computational fluid dynamics technique through k-ε turbulence model, a very small number of studies were performed on particular shapes with different corners having same plan area and height. The mean pressure coefficients of Model-A and Model-B were compared with various international standards and wind tunnel data, respectively, for validation, showing a nearly equivalent consistency; however, international standards consist of coefficients at 0° and 90° wind angles only. Wind effects on building shapes having different corners change the characteristics of the separated shear layer and reduce the downstream wake which helps to reduce drag and lift forces simultaneously. Recent study shows that the windward pressure distribution pattern is almost independent of building size and height. Therefore incorporation of corners in building helps to reduce the forces caused by extreme wind. A very large amount of numerical simulation data about wind pressure is generated, which can be used by the designer while designing such a building for wind load. Comparison have been made between buildings having different corners under same wind speed, and Model-D (round corner) performed very well against the wind.

show abstract

Bilateral Interference of Wind Loads Induced on Duplicate Building Models of Various Shapes

Cited by 12 publications

References 27 publications

Interference effects mapping on the static wind loading of a tall building

Interference effects mapping on the static wind loading of a tall building

Numerical Study of Wind Loads on Y Plan-Shaped Tall Building Using CFD

Wind Excited Action around Tall Building Having Different Corner Configurations

Contact Info

Product

Resources

About