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Flood impact on masonry buildings: The effect of flow characteristics and incidence angle.

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Title: Flood impact on masonry buildings: The effect of flow characteristics and incidence angle.
Authors: Postacchini, Matteo1 (AUTHOR) m.postacchini@univpm.it, Zitti, Gianluca1 (AUTHOR), Giordano, Ersilia1 (AUTHOR), Clementi, Francesco1 (AUTHOR), Darvini, Giovanna1 (AUTHOR), Lenci, Stefano1 (AUTHOR)
Source: Journal of Fluids & Structures. Jul2019, Vol. 88, p48-70. 23p.
Subjects: Masonry, Pressure transducers, Cities & towns, Froude number
Abstract: Climate change and the raising number of extreme events, such as severe floods, has increased the attention on their effects on urban systems. Urban floods generate important hydrodynamic loads on building and this work proposes a first systematic study on the actions generated by floods with different characteristics (depth, velocity and incidence angle) on masonry buildings. The study is carried out with experimental tests reproducing a masonry bay with scale 1:10, while the effect of the flow hitting the building has been obtained by moving the building in the water at rest. The pressure generated by the fluid at the four walls of the building was recorded using pressure transducers. It has been found that the overpressure acting on the building depends on the flow characteristics in different manner for the frontal, lateral and rear walls. Further, the incidence angle plays a major role in the generation of a pressure gradient along the impacted wall, and significantly affects both peak frequency and spectral energy. Use of theoretical models suggests that (i) the drag coefficient of the building decreases with the Froude number, and only slightly depends on the incidence angle, and (ii) the blocking effect largely affects the hydrodynamics around the structure. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 137374560
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Flood impact on masonry buildings: The effect of flow characteristics and incidence angle.
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  Data: <searchLink fieldCode="AR" term="%22Postacchini%2C+Matteo%22">Postacchini, Matteo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> m.postacchini@univpm.it</i><br /><searchLink fieldCode="AR" term="%22Zitti%2C+Gianluca%22">Zitti, Gianluca</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Giordano%2C+Ersilia%22">Giordano, Ersilia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Clementi%2C+Francesco%22">Clementi, Francesco</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Darvini%2C+Giovanna%22">Darvini, Giovanna</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lenci%2C+Stefano%22">Lenci, Stefano</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Fluids+%26+Structures%22">Journal of Fluids & Structures</searchLink>. Jul2019, Vol. 88, p48-70. 23p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Masonry%22">Masonry</searchLink><br /><searchLink fieldCode="DE" term="%22Pressure+transducers%22">Pressure transducers</searchLink><br /><searchLink fieldCode="DE" term="%22Cities+%26+towns%22">Cities & towns</searchLink><br /><searchLink fieldCode="DE" term="%22Froude+number%22">Froude number</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Climate change and the raising number of extreme events, such as severe floods, has increased the attention on their effects on urban systems. Urban floods generate important hydrodynamic loads on building and this work proposes a first systematic study on the actions generated by floods with different characteristics (depth, velocity and incidence angle) on masonry buildings. The study is carried out with experimental tests reproducing a masonry bay with scale 1:10, while the effect of the flow hitting the building has been obtained by moving the building in the water at rest. The pressure generated by the fluid at the four walls of the building was recorded using pressure transducers. It has been found that the overpressure acting on the building depends on the flow characteristics in different manner for the frontal, lateral and rear walls. Further, the incidence angle plays a major role in the generation of a pressure gradient along the impacted wall, and significantly affects both peak frequency and spectral energy. Use of theoretical models suggests that (i) the drag coefficient of the building decreases with the Froude number, and only slightly depends on the incidence angle, and (ii) the blocking effect largely affects the hydrodynamics around the structure. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Fluids & Structures is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.jfluidstructs.2019.04.004
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 23
        StartPage: 48
    Subjects:
      – SubjectFull: Masonry
        Type: general
      – SubjectFull: Pressure transducers
        Type: general
      – SubjectFull: Cities & towns
        Type: general
      – SubjectFull: Froude number
        Type: general
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      – TitleFull: Flood impact on masonry buildings: The effect of flow characteristics and incidence angle.
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            NameFull: Zitti, Gianluca
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            NameFull: Giordano, Ersilia
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            NameFull: Clementi, Francesco
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            NameFull: Darvini, Giovanna
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            NameFull: Lenci, Stefano
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            – D: 01
              M: 07
              Text: Jul2019
              Type: published
              Y: 2019
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              Value: 88
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