Characteristics of fluctuating wind pressure on long low-rise buildings with gable roofs

Kanda, Makoto; Maruta, Eizo

doi:10.1016/0167-6105(93)90072-v

Cited by 32 publications

(17 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the 45° wind direction, the mean wind pressure coefficients on the windward wall and roof of M2 are approximate to those of M1. The mean pressure coefficients on the end region of leeward wall of M2 are larger than those of M1, which is in agreement with Kanda and Maruta's results [2] that an increase in the aspect ratio is shown to slightly increase the mean suction on the leeward wall for wind direction of 45°. In the 90° wind direction, the mean pressure coefficients on the walls and roof of M2 are significantly smaller than those of M1.…”

Section: Mean Wind Pressuresupporting

confidence: 91%

“…Holmes [1] investigated the characteristics of wind pressure acting on the walls and roofs of gable-roofed tropical houses considering the effects of elevation, roof pitch, and grouping of buildings on the external pressures. Kanda and Maruta [2] investigated the characteristics of long low-rise building with gable roof for the case of large aspect ratio. Case and Isyumov [3] showed that the suburban exposure produces lower wind loads than those experienced in the open country exposure by the comparisons of local pressures and selected structural loads on low buildings with 4 : 12 gable roof.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Wind Tunnel Tests for Wind Pressure Distribution on Gable Roof Buildings

Jing

2013

The Scientific World Journal

View full text Add to dashboard Cite

Gable roof buildings are widely used in industrial buildings. Based on wind tunnel tests with rigid models, wind pressure distributions on gable roof buildings with different aspect ratios were measured simultaneously. Some characteristics of the measured wind pressure field on the surfaces of the models were analyzed, including mean wind pressure, fluctuating wind pressure, peak negative wind pressure, and characteristics of proper orthogonal decomposition results of the measured wind pressure field. The results show that extremely high local suctions often occur in the leading edges of longitudinal wall and windward roof, roof corner, and roof ridge which are the severe damaged locations under strong wind. The aspect ratio of building has a certain effect on the mean wind pressure coefficients, and the effect relates to wind attack angle. Compared with experimental results, the region division of roof corner and roof ridge from AIJ2004 is more reasonable than those from CECS102:2002 and MBMA2006.The contributions of the first several eigenvectors to the overall wind pressure distributions become much bigger. The investigation can offer some basic understanding for estimating wind load distribution on gable roof buildings and facilitate wind-resistant design of cladding components and their connections considering wind load path.

show abstract

Section: Mean Wind Pressuresupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Wind Tunnel Tests for Wind Pressure Distribution on Gable Roof Buildings

Jing

2013

The Scientific World Journal

View full text Add to dashboard Cite

show abstract

“…On the windward wall, the mean pressure coefficient has a value of 0.5. Similar values were observed by Holmes (1987) for a long fourspan building, and by Kasperski (1996) and Kanda and Maruta (1993) for a long low-rise building with duo-pitch roof. The results FIGURE 9 | (A) Mean pressure coefficientscp determined at the center tap of the greenhouse faces, (B) mean pressure coefficients determined on the first 10 spans, and (C) mean horizontal force coefficient per roof span.…”

Section: Resultssupporting

confidence: 75%

“…of Kanda and Maruta (1993) indicate that with increasing length to eaves height ratio, in the range of 0.5 ≤ l/h ≤ 9.0, the windward wall pressure coefficient decreases asymptotically to values of approximately 0.5. The model in the current study had a length to eaves height ratio of l/h = 31.…”

Section: Mean Pressure Coefficientsmentioning

confidence: 99%

Wind Loads for Stability Design of Large Multi-Span Duo-Pitch Greenhouses

Bronkhorst

Geurts

Bentum

et al. 2017

Front. Built Environ.

View full text Add to dashboard Cite

An atmospheric boundary layer wind tunnel study was performed to determine the overall horizontal wind load on multi-span duo-pitch greenhouses. The results of this study are intended for the stability design of inflexible cladding system greenhouses (designated as Class A in EN 13031-1) with roof pitch angles of 23-24°and ridge heights of 7.5-8 m. Both static force and fluctuating pressure measurements were performed to determine the overall horizontal wind force. The results obtained with the static force measurements show that the overall horizontal wind force increases linearly with increasing number of spans. The overall horizontal wind load determined with the mean pressure coefficients derived from the fluctuating pressure measurements was found to be in good agreement with the static force measurements. An investigation into the correlation of the roof pressures showed that these pressures are relatively little correlated. The overall horizontal force on the roof of multi-span buildings reduces significantly because of this lack of correlation. Accounting for the lack of correlation between the roof pressures on a 30-span model resulted in a 65% reduction of the peak horizontal wind force on the roof. A comparison was made of the overall horizontal wind forces determined in the current study and calculated with European codes for wind load assessment on greenhouses. EN 13031-1 provides non-conservative outcomes for the overall horizontal wind force on the investigated duo-pitch greenhouse type with more than 30 spans. On the other hand, EN 1991-1-4 is increasingly conservative with larger number of spans.Keywords: static wind loads, multi-span duo-pitch greenhouses, stability design, wind tunnel measurements, force and pressure coefficients, correlation of wind pressures, size factor, dynamic coefficient HIGHLIGHTS 1. The finding that the overall horizontal wind force on multi-span duo-pitch greenhouses increases linearly with increasing number of spans. 2. The quantification of the lack of correlation between roof faces on multi-span duo-pitch buildings, demonstrating the importance of this effect for the overall horizontal wind force. 3. The identification of the need for positive values, besides negative values, for the pressure coefficients in EN 1991-1-4 and EN 13031-1 on wind-facing roof faces beyond the first roof span. 4. The conclusion that EN 13031-1 provides non-conservative outcomes for the overall horizontal wind force on duo-pitch greenhouses (with roof pitch angle 23-24°) larger than 30 spans, and that, beyond 10 spans, EN 1991-1-4 is increasingly conservative with larger number of spans.

show abstract

“…There has been much investigation of the wind characteristics on the gable roofs in different regions, see, [1], [2]. The magnitude and distribution of the wind pressures are analyzed in [3].…”

Section: Introductionmentioning

confidence: 99%

Measurements of dynamic wind pressures on gable roofs – comparison with ČSN EN 1991-1-4

et al. 2017

View full text Add to dashboard Cite

Abstract. The contribution is dealing with the wind tunnel measurements of dynamic pressures on the canopy roofs. It compares experimentally determined pressure coefficients Cp with the values in ČSN EN 1991-1-4 and former code ČSN 73 0035 as well. The pressures are expressed by the dynamic values. Thus, the averaged values are presented together with the fluctuating part, which significantly contributes to the overall loading. The measurement is carried out at two roof models, two basic directions, and two turbulence intensities.

show abstract

Characteristics of fluctuating wind pressure on long low-rise buildings with gable roofs

Cited by 32 publications

References 1 publication

Wind Tunnel Tests for Wind Pressure Distribution on Gable Roof Buildings

Wind Tunnel Tests for Wind Pressure Distribution on Gable Roof Buildings

Wind Loads for Stability Design of Large Multi-Span Duo-Pitch Greenhouses

Measurements of dynamic wind pressures on gable roofs – comparison with ČSN EN 1991-1-4

Contact Info

Product

Resources

About