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دینامیک خاک و مهندسی زلزله 2011
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • sectional forces for seismic design of r/c frames by linear time history analysis and application to 3d single-story buildings

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 915
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the aim of the present paper is to present a rational procedure for the appropriate selection of the sectional forces needed for the calculation of the longitudinal reinforcement to r/c elements within the context of linear time history analysis. the proposed procedure is based on the maximum normal stresses, which occurs in each relevant cross section, and takes into consideration the critical angle of the seismic excitation, i.e., the angle that yields the maximum value of each response quantity of interest. moreover, in an attempt to realistically interpret pertinent code provisions, three other code compatible methods of selecting the cross sectional forces are presented and compared to the here proposed method. for this purpose, three single-story buildings subjected to 47 bi-directional strong earthquake ground motions are analyzed. for each ground motion, the longitudinal reinforcement at all critical cross sections is calculated using the above four methods. furthermore, the necessary reinforcement due to 3 and 7 representative earthquake records, required by the seismic code provisions, is determined. comparison of results clearly shows that methods compatible with current seismic code provisions can significantly underestimate the necessary reinforcement with regards to the proposed method.

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