• comparing the nonlinear dynamic behavior of concrete filled tube columns (cft) under near field and far field earthquakes

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    • تاریخ ارائه: 1396/05/18
    • تاریخ انتشار در تی پی بین: 1396/05/18
    • تعداد بازدید: 372
    • تعداد پرسش و پاسخ ها: 0
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    including discussions about the behavior of the seismic behavior of composite columns and more importantly how it is seismic design. procedures for authentic design of composite columns with different orientations and are sometimes conservative. the investigation into the case of the actual behavior of such structures is of great importance. columns composite (composite) to the face the can or pipe steel that with concrete fill have become take to briefly cft (concrete filled tube) call. at the end of a near field and far field behavior of columns records tools cft under review and compared. two-dimensional frames of 3, 5 and 8 floors were modeled in abaqus software. for each mode, three different types of column sections including square, circle, and rectangular sections were modeled and evaluated. based on the results of the research, three-stage frames are recommended for use with circular cross-sectional columns. also, with an increase in the number of floors and based on the most favorable amount in displacement and drafts, as well as the base cutting, rectangular sections in the 5-story and 8-story frames were the preferred technical option. based on results drift maximum floors at buildings of five and eight floor under earthquake area far way the least amounts drift at buildings with sections rectangular column and in building three floor the least amounts dirty to the face approximate to model with cross section column circular on data is. also under earthquake areas close to buildings of three, five and eight floors the best performance and the lowest drift for the column is rectangular. columns mry also had a poor performance. finally, it is observed that the column section is circular with the lowest cost compared to other sections have been examined in this study. despite this, according to technical controls, the best performance for a rectangular column is observed.

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