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مجله تحقیقات فولاد ساختمانی
جزئیات رویداد
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  • an advanced mechanical model for composite connections under hogging/sagging moments

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    • تاریخ ارائه: 1394/01/01
    • تاریخ انتشار در تی پی بین: 1394/01/01
    • تعداد بازدید: 505
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the behaviour of composite connections has been widely investigated in last years within the international scientific community following the introduction in eurocode 4 of the extension to composite connections of the component method, already suggested by eurocode 3 for bare steel connections. with respect to bare steel joints, eurocode 4 requires only the definition of two new components: the concrete slab in tension or in compression and the shear connectors. in last years, a lot of works have been carried out dealing with the application of this methodology to connections subjected to hogging moment, but there is still limited knowledge with reference to composite connections subjected to sagging moment as it can occur under seismic horizontal forces. therefore, aiming to introduce the connection modelling in seismic structural analyses, this work deals with the application of the component approach to different typologies of semirigid composite connections subjected to both hogging and sagging moment. in particular, with reference to joints subjected to hogging moment, the need of properly predicting the extension of the compressed zone is pointed out. starting from this observation, an alternative procedure with respect to the codified one is proposed. the main feature of the proposed procedure is the missing of any preliminary assumption regarding the location of the centre of compression in both the analysed cases (sagging moment and hogging moment). in addition, the prediction of the whole moment-rotation curve is obtained by means of an appropriate modelling of the joint components. finally, the comparison with available experimental results shows the improvements obtained by means of the proposed approach with respect to that suggested by eurocode.

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