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سازه های مهندسی
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • response of pierced fixed corrugated steel roofing systems subjected to wind loads

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 627
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the low-cycle fatigue response of corrugated metal roof cladding to fluctuating wind loads was studied by subjecting cladding specimens to a series of static, cyclic and simulated “real” cyclonic wind loads using a pressure loading actuator (pla), and measuring fastener response using a x–y–z load cell. the overall performance of cladding including crack initiation, propagation and patterns, and cycles to failure was found to be similar to previous tests that used line-loads to simulate wind pressure. the reaction at a fastener to spatially varying pressures was assessed by analysing the influence coefficients, to show that it is predominantly influenced by local loads acting along the screwed crest. in addition, the response of roofing specimens subjected to fluctuating cyclonic wind pressures replicated failures observed in the field. the fastener response varied with the load level and the response spectrum followed the wind load spectrum up to 5 hz even with deformation and cracking of the cladding showing that these higher frequency wind “load cycles” were transferred into the supporting structure via the fastener.

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