Effects of roof geometric details on aerodynamic performance of standing seam metal roofs

Azzi, Ziad; Habte, Filmon; Vutukuru, Krishna Sai; Chowdhury, Arindam; Moravej, Mohammadtaghi

doi:10.1016/j.engstruct.2020.111303

Cited by 16 publications

(4 citation statements)

References 40 publications

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“…To prevent damage, the aerodynamic characteristics acting on the roof panels must be understood. Azzi et al (2020) conducted a wind tunnel experiment to study the impact of the shape and slope of a roof and wind direction on the average and standard deviation of the maximum wind pressure coefficient in open buildings, which provides realistic dynamic data. The conditions and mechanisms of the large local peak suction that occurs on roofs and walls must be understood for the wind-resistant design of industrial structures.…”

Section: Introductionmentioning

confidence: 99%

Fragility Assessment of Installation Defects in Industrial Standing Seam Metal Roof Subjected to Wind Loads

Kwon,

Choi,

et al. 2024

Journal of Civil Engineering and Management

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In industrial structures in which standing seam metal roofs (SSMRs) are commonly used, heat insulation and waterproofing have emerged as crucial requirements for the protection of internal equipment. However, in newly developed SSMRs, the structural systems have become increasingly complex. The installation of insulation layers between the upper and lower panels poses challenges during roof panel installations, resulting in defects owing to the carelessness of the installer. These clip defects can significantly affect the wind-resistance performance of the SSMR structure during testing. In this study, we employed finite element method (FEM) modeling and verification, utilizing the wind resistance test results of SSMRs. In addition, we conducted a variable analysis as well as a fragility assessment focusing on the location and number of clip defects in the SSMRs. The results of this study indicate that the wind performance of the roof was significantly degraded owing to SSMR clip defects. Moreover, the wind resistance performance can be quantitatively evaluated by considering the roof zone and the exposed environment under a wind load.

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Section: Introductionmentioning

confidence: 99%

Fragility Assessment of Installation Defects in Industrial Standing Seam Metal Roof Subjected to Wind Loads

Kwon,

Choi,

et al. 2024

Journal of Civil Engineering and Management

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“…Compared with foreign countries, China's roofing systems industry developed relatively late, and the early selection of metal roof panel materials and roof structure forms was relatively limited [1]. However, since the early 21st century, driven by the continuous enhancement of the national economic landscape and ongoing advancements in new materials and technologies, roofing systems have evolved from the initial use of self-tapping screws for direct perforation of roof panels to diverse structural forms such as occlusion, buckling, and continuous welding [2,3]. Currently, the roof systems in projects mainly include the single-layer membrane roof system, the standing seam aluminum alloy roof system, and the continuous welding stainless-steel roof system.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Static Wind Uplift Resistance of Roofing Systems

Cheng,

Cheng

2023

Buildings

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Metal roof systems were widely utilized in various important buildings; however, cases of wind damage were often observed. In this paper, wind uplift tests of standing seam aluminum magnesium manganese and continuous welded stainless-steel roof systems were conducted, and the wind resistance bearing capacity and mechanical properties of key joints in the two roof systems were compared and analyzed. Strain gauges and displacement sensors were arranged at different structural layers and key nodes of the roof system to compare and analyze the stress and displacement changes. The results showed that the wind resistance capacity of the continuous welded stainless-steel roof system was more than 25% higher than that of the standing seam aluminum magnesium manganese roof system. The stress and displacement of the roof system gradually increased with the increase in wind load. Obvious differences in stress at different positions of the two roof systems were identified. The stress at the roof panel of the roof system was greater than that of other structural layers, and the maximum displacement of the roof panel in the elastic stage could reach more than 97.5 mm. The fitting coefficient between the test and the finite element was 0.976, and the ultimate bearing capacity of Specimen B was 479.64 MPa. The research results of this paper can provide some data support and reference for engineering design and applications.

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“…The mature application of cold bending forming technology brings excellent development opportunities for applying thin metal roof panels in building envelopes, and the metal roof system has been increasingly widely used [1,2]. In terms of materials, from the initial galvanized steel sheet, it has developed into aluminized zinc steel sheet, titanium zinc sheet, aluminum alloy sheet, copper sheet, and stainless steel sheet.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Natural Vibration Characteristics of Metal Roof Panel of Large-Span Standing-Seam Metal Roof System

Xie,

Zhang

2023

Buildings

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Metal roof systems are widely used in various landmark buildings. Understanding the natural vibration characteristics and primary influence of the roof system is useful for improving the roof system’s service life and maintaining the project’s safety. In addition, it is helpful to analyze the vibration force of the structure under earthquake and wind load. In this paper, the experimental investigation of the natural vibration characteristics (NVC) of two commonly used structural forms of standing-seam metal roof systems is carried out, and the influence of different boundary conditions, specimen width, panel width, and other parameters on the NVC are considered. The influence of different factors on the NVC of the roof system is analyzed in detail, and the main influencing factors and secondary influencing factors are studied. The research results show apparent differences in the NVC of the side and middle span of the roof panel under different parameters. The structural form has the most significant influence on the NVC of the roof panel, and the maximum influence on the peak acceleration (PA) and the fundamental frequency (FF) of the roof panel are 83.7% and 60%, respectively. The width of the specimen has a minor influence on the FF of the roof panel, and the minimum influence range is 6.9%. The influence of structural form, constraint form, specimen width, and panel width on the PA of the roof panel is far more significant than it is on the FF, with the difference between the two reaching 44.2%.

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Effects of roof geometric details on aerodynamic performance of standing seam metal roofs

Cited by 16 publications

References 40 publications

Fragility Assessment of Installation Defects in Industrial Standing Seam Metal Roof Subjected to Wind Loads

Fragility Assessment of Installation Defects in Industrial Standing Seam Metal Roof Subjected to Wind Loads

Experimental Study on Static Wind Uplift Resistance of Roofing Systems

Analysis of Natural Vibration Characteristics of Metal Roof Panel of Large-Span Standing-Seam Metal Roof System

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