WIND TUNNEL TESTS ON THE EFFECTS OF A HIGH-RISE BUILDING ON THE WIND PRESSURE OF SURROUNDING LOW-RISE HOUSES

The paper summarizes the results of wind tunnel tests of the influence of aerodynamic interference on wind action of a high-rise building design in Warsaw. Measurements were accomplished in Wind Engineering Laboratory of Cracow University of Technology. Wind pressures on external surfaces of the building model were acquired in two different situations. Firstly, only the building model was placed in the tunnel working section, secondly, the building model with the nearest surroundings was taken under consideration. A study of the character of wind action differences caused by the nearest surroundings of the building was the main aim of the paper. Wind pressure coefficients on the external building surfaces and the difference of horizontal wind action on full scale were compared.

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Wind tunnel tests of wind action on a high-rise building

Budownictwo i Architektura ◽

10.35784/bud-arch.1891 ◽

2014 ◽

Vol 13 (2) ◽

pp. 163-171

Author(s):

Grzegorz Bosak

Keyword(s):

Wind Tunnel ◽

Building Design ◽

Wind Pressure ◽

Horizontal Wind ◽

Wind Tunnel Tests ◽

Wind Action ◽

High Rise ◽

High Rise Building ◽

University Of Technology ◽

Wind Pressures

The paper summarizes the results of wind tunnel tests of a wind action on a high-rise building design in Warsaw. Measurements were accomplished in Wind Engineering Laboratory of Cracow University of Technology. Wind pressures on external surfaces of the building model were acquired. A study of the character of the wind action on a tower of the building was the main aim of the paper. A triangle shape with rounded corners of the cross section of the tower and a complex group of neighbor buildings support aerodynamic analysis in a wind tunnel. Wind pressure coefficients on the external building surfaces and the global horizontal wind action on the building tower on full scale were analyzed.

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Study of Wind Loads and Wind Speed Amplifications on High-Rise Building with Opening by Numerical Simulation and Wind Tunnel Test

Advances in Civil Engineering ◽

10.1155/2020/8850688 ◽

2020 ◽

Vol 2020 ◽

pp. 1-24

Author(s):

Fu-Bin Chen ◽

Xiao-Lu Wang ◽

Yun Zhao ◽

Yuan-Bo Li ◽

Qiu-Sheng Li ◽

...

Keyword(s):

Numerical Simulation ◽

Wind Speed ◽

Wind Tunnel ◽

Wind Pressure ◽

Wind Loads ◽

Structural Safety ◽

Pressure Coefficients ◽

High Rise ◽

High Rise Building ◽

The Mean

High-rise buildings are very sensitive to wind excitations, and wind-induced responses have always been the key factors for structural design. Facade openings have often been used as aerodynamic measures for wind-resistant design of high-rise buildings to meet the requirement of structural safety and comfort. Obvious wind speed amplifications can also be observed inside the openings. Therefore, implementing wind turbines in the openings is of great importance for the utilization of abundant wind energy resources in high-rise buildings and the development of green buildings. Based on numerical simulation and wind tunnel testing, the wind loads and wind speed amplifications on high-rise buildings with openings are investigated in detail. The three-dimensional numerical simulation for wind effects on high-rise building with openings was firstly carried out on FLUENT 15.0 platform by SST k − ε model. The mean wind pressure coefficients and the wind flow characteristics were obtained. The wind speed amplifications at the opening were analyzed, and the distribution law of wind speed in the openings is presented. Meanwhile, a series of wind tunnel tests were conducted to assess the mean and fluctuating wind pressure coefficients in high-rise building models with various opening rates. The variation of wind pressure distribution at typical measuring layers with wind direction was analyzed. Finally, the wind speed amplifications in the openings were studied and verified by the numerical simulation results.

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Experimental Study of Interference Effects of a High-Rise Building on the Snow Load on a Low-Rise Building with a Flat Roof

Applied Sciences ◽

10.3390/app112311163 ◽

2021 ◽

Vol 11 (23) ◽

pp. 11163

Author(s):

Qingwen Zhang ◽

Yu Zhang ◽

Ziang Yin ◽

Guolong Zhang ◽

Huamei Mo ◽

...

Keyword(s):

Wind Tunnel ◽

Snow Accumulation ◽

Interference Effects ◽

Wind Tunnel Tests ◽

Snow Load ◽

Building Roof ◽

High Rise ◽

High Rise Building ◽

Snow Distribution ◽

Flat Roof

To explore the interference effects of a high-rise building on the snow load on a low-rise building with a flat roof, a series of wind tunnel tests were carried out with fine silica sand as a substitute for snow particles. The effects of the height of the interfering building and the distance between buildings on the snow distribution of the target building under three different wind directions were studied. The snow depth on the target building roof and the mass of particles blown off from the target building were measured during the wind tunnel tests, and the results showed that the snow distribution of the target building roof tends to be uniform when the interfering building is located upstream of the target building due to the shelter effect. When the interfering building is on the side of the target building, the snow distribution of the target building tends to be more uneven, because the interfering building increases the friction velocity on the target building roof near the interfering building. However, when the interfering building is located downstream of the target building, there will be an amplification effect of snow accumulation, and the snow distribution on the target building roof is nearly the same as that of the isolated condition. Under each wind direction, the interference effect of the snow load increases with the increase of the building height and the decrease of the building spacing. Therefore, the influence of the surrounding buildings on the snow distribution of the building roof cannot be ignored and should be considered in the structure design.

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Effects of Geometrical Factors on Wind Pressure Characteristics of Cylindrical Roofs with Wind Tunnel Tests

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.351-352.284 ◽

2013 ◽

Vol 351-352 ◽

pp. 284-289 ◽

Cited By ~ 2

Author(s):

Bo Chen ◽

Qing Shan Yang

Keyword(s):

Wind Tunnel ◽

Probability Distributions ◽

Wind Pressure ◽

Wind Tunnel Tests ◽

Pressure Coefficients ◽

High Rise ◽

Mean Pressure ◽

The Mean ◽

Geometrical Factors ◽

Pressure Characteristics

With wind tunnel tests, simultaneous pressure measurements are made on 4 cylindrical roof models with different rise-span ratios and roof inclinations. Effects of these geometrical factors on wind pressure characteristics of the roofs are investigated, including mean pressure coefficients, RMS pressure coefficients, skewness, kurtosis, and probability distributions of wind pressure. Results show that the mean vertical wind force coefficient of high rise-span ratio roof is larger than that of the low rise-span ration roof; the mean pressure coefficient distribution of the low rise-span ratio roof is similar to that of RMS pressure coefficients and the skewness (or the kurtosis); the vortex center line occurs at the windward edge for the low rise-span ratio roof with inclination 0°, which occurs at the roof apex for the high rise-span ratio roof. The roof inclination has more effects on the low rise-span ratio roof, the vortex moves from the windward edge to the apex for the roof with inclination 7.2°when the wind flows from the low eave to the high eave. The distribution of the skewness is strongly correlative to that of the kurtosis. The probability distributions of the roof edges and corners deviate obviously from the Guass distribution. If this point is ignored, the peak suction pressure will be underestimated.

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Investigation of the Time Dependence of Wind-Induced Aeroelastic Response on a Scale Model of a High-Rise Building

Applied Sciences ◽

10.3390/app11083315 ◽

2021 ◽

Vol 11 (8) ◽

pp. 3315

Author(s):

Fabio Rizzo

Keyword(s):

Wind Tunnel ◽

Time Dependence ◽

Wind Tunnel Test ◽

Structural Response ◽

Cumulative Distribution ◽

Scale Model ◽

Acquisition Time ◽

Test Results ◽

High Rise ◽

High Rise Building

Experimental wind tunnel test results are affected by acquisition times because extreme pressure peak statistics depend on the length of acquisition records. This is also true for dynamic tests on aeroelastic models where the structural response of the scale model is affected by aerodynamic damping and by random vortex shedding. This paper investigates the acquisition time dependence of linear transformation through singular value decomposition (SVD) and its correlation with floor accelerometric signals acquired during wind tunnel aeroelastic testing of a scale model high-rise building. Particular attention was given to the variability of eigenvectors, singular values and the correlation coefficient for two wind angles and thirteen different wind velocities. The cumulative distribution function of empirical magnitudes was fitted with numerical cumulative density function (CDF). Kolmogorov–Smirnov test results are also discussed.

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Observations of typhoon effects on a high-rise building and verification of wind tunnel predictions

Journal of Wind Engineering and Industrial Aerodynamics ◽

10.1016/j.jweia.2018.11.026 ◽

2019 ◽

Vol 184 ◽

pp. 174-184 ◽

Cited By ~ 6

Author(s):

Xiao Li ◽

Q.S. Li

Keyword(s):

Wind Tunnel ◽

High Rise ◽

High Rise Building

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Wind tunnel study of wind effects on a high-rise building at a scale of 1:300

Journal of Wind Engineering and Industrial Aerodynamics ◽

10.1016/j.jweia.2018.01.017 ◽

2018 ◽

Vol 174 ◽

pp. 391-403 ◽

Cited By ~ 4

Author(s):

R. Sheng ◽

L. Perret ◽

I. Calmet ◽

F. Demouge ◽

J. Guilhot

Keyword(s):

Wind Tunnel ◽

Wind Effects ◽

High Rise ◽

High Rise Building ◽

Wind Tunnel Study

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Wind Loading on a Pyramidal Roof Structure

International Journal of Space Structures ◽

10.1177/026635118500100206 ◽

1985 ◽

Vol 1 (2) ◽

pp. 105-110 ◽

Cited By ~ 2

Author(s):

A. J. Dutt

Keyword(s):

Wind Tunnel ◽

Peripheral Region ◽

Wind Pressure ◽

Scale Model ◽

Wind Loading ◽

Wind Tunnel Experiments ◽

Wind Tunnel Tests ◽

Roof Structure ◽

Inner Region ◽

The Church

This paper deals with the investigation of wind loading on the pyramidal roof structure of the Church of St Michael in Newton, Wirral, Cheshire, England, by wind tunnel tests on a 1/48 scale model. The roof of the model was flat in the peripheral region of the building while in the inner region there was a grouping of four pyramidal roofs. Wind tunnel experiments were carried out; wind pressure distribution and contours of wind pressure on all surfaces of the pyramid roofs were determined for four principal wind directions. The average suctions on the roof were evaluated. The highest point suction encountered was — 4q whilst the maximum average suction on the roof was —0·86q. The results obtained from wind tunnel tests were used for the design of pyramidal roof structures and roof coverings for which localised high suctions were very significant.

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