Influential Factor in Improving the Seismic Performance of the Kaiser Bolted Bracket Moment Connection
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 26، شماره: 2
سال انتشار: 1391
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 905
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شناسه ملی سند علمی:
JR_IJE-26-2_009
تاریخ نمایه سازی: 17 خرداد 1393
چکیده مقاله:
Following the Northridge earthquake of 1994, a significant number of steel moment resisting structural systems were damaged. Several studies have been conducted to improve the seismic performance ofsteel structures and specially their beam-to-column connections. One of the proposed connections forspecial moment-resisting frames included in AISC-358 is Kaiser bolted bracket moment connection, briefly named, KBB. The brackets in these connections are precast steel elements. In this study, the seismic behavior of moment connection KBB has been examined under standard loading history andnear-fault loading history according to ATC and FEMA codes. The results show that KBB connection has acceptable seismic performance except for deep beams. In deep beams a high prying force may occurs in upper rows of the bolts. the main reason for such phenomenon is rigidity of the bracket.Moreover use of Tapered Wedge Shims reduces pre-tensioned force in bolts and increases pinch in hysteresis curve of specimens
کلیدواژه ها:
Standard Loading History ، Near-fault Loading History ، Kaiser Bolted Bracket Connection (KBB) ، Pinch
نویسندگان
f Shahidi
Department of Civil Engineering and Surveying, Qazvin Branch, Islamic Azad University, Iran
f Nateghi-A
International Institute of Earthquake Engineering and Seismology of Tehran, Iran
m.s Razzaghi
Faculty of Civil Engineering and Surveying, Qazvin Branch, Islamic Azad University, Iran
f Shahidi
Department of Civil Engineering, Islamic Azad University of Takestan, Iran