• bending strength of threaded connections for micropiles

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1394/01/01
    • تاریخ انتشار در تی پی بین: 1394/01/01
    • تعداد بازدید: 757
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the bending strength of pin-box threaded connections for mortar-filled steel tubes used as micropiles is investigated in this paper. an experimental campaign has been carried out, including forty tests subjected to four-point bending until failure. the specimens consisted of mortar-filled steel tubes with a connection at the midsection. the results indicate that the failure mode of pin-box threaded joints is brittle and originates at the root of the last engaged thread of the pin end. moreover, the bending strength of the connection is significantly smaller than the strength of jointless tubes. the analysis of the results suggests a considerable influence of the size effect, with the bending strength decreasing as the outer diameter of the tube increases. in addition, it is shown that, within the dimensions tested, the bending strength does not increase when the relative threaded length is increased.

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