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        楊尉彪       （冶金部建筑研究總院  北京 100088）

        高小旺  張維嶽  易方民  王  巍  肖  偉     （中國(guó)建筑科學(xué)研究院  北京 100013）

[提要] 1994年美圍Northridge地震和1995年日本阪神地震后，許多新型梁柱節(jié)點(diǎn)被提出，其中狗骨式節(jié)點(diǎn)是研究最多的一種節(jié)點(diǎn)形式?，F(xiàn)結(jié)合實(shí)際工程對(duì)這種節(jié)點(diǎn)進(jìn)行了試驗(yàn)研究，探討了其在模擬地震荷載作用下的性能。試驗(yàn)結(jié)果表明，通過對(duì)節(jié)點(diǎn)附近梁上下翼緣進(jìn)行合理的削弱可以增加節(jié)點(diǎn)的延性，同時(shí)對(duì)節(jié)點(diǎn)的剛度、強(qiáng)度影響很小，很好地改善了節(jié)點(diǎn)性能。在試驗(yàn)研究和數(shù)值計(jì)算的基礎(chǔ)上提出了一種狗骨式節(jié)點(diǎn)設(shè)計(jì)方法。
[關(guān)鍵詞]  高層鋼結(jié)構(gòu)  狗骨式節(jié)點(diǎn)  延性  強(qiáng)度  剛度

Since the 1994 Northridge carthquake and the 1995 Hanshcn carthquakc, a wide varicty of diffcrcnt momcnt conncctions have bccn dcvclopcd, the dog-bone conncction was a particularly popular momcnt conncction. Bascd on the cxpcrimcntal invcstigation of dog-bone connccrions of rcal structurc, the pcrformance of this kind of conncction undcr simulatcd carth-quake load is discusscd. The cxpcrimcntal rcsults show that, it can improve the pcrformance of conncction by trimming portions of the bcam flange ncar the bcam-column conncction with rcasonable dimcnsion, which can cnhance the ductility and have little influcnce on the stiffncss and the strcngth of conncction. Thcn a dcsign mcthod of dog-bone momcnt connccrions is put forward bascd on this cxpcrimcnt rcscarch and numcrical analysis.
Keywords:  tall stccl structurc; dog-bone conncction; ductility; strcngth; stiffncss