• modelling and analysis of time-dependent behaviour of historical masonry under high stress levels

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 666
    • تعداد پرسش و پاسخ ها: 0
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     masonry which is subjected to high, sustained stress levels can suffer from long-term damage accumulations. this type of stress-induced damage interacts with other long-term phenomena, such as deterioration and fatigue. in this work, the time-dependent damage which is caused by elevated stress levels is analysed and modelled. a one-dimensional rheological model, which was calibrated on the results of an extensive experimental test campaign, is extended to a three-dimensional version. the time-dependent constitutive relations are implemented in a finite element code. the issues of triaxial stresses and mesh-dependency are addressed. in a first application, the model is used to simulate the long-term behaviour of a masonry tower. secondly, the effects of time-dependent stress redistributions on the long-term stability of three-leaf masonry are investigated.

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