动力荷载作用下黏滞阻尼器对钢结构仿古建筑异形节点力学性能的影响

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关键词：仿古建筑；钢结构异形节点；动力荷载作用；黏滞阻尼器；力学性能 图分类号：TU392.1 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202404032

Abstract：Inoertoimprovethenergdisipaioncapacityofthereguarsteejointsofpseudoclaicarchitecture，tereplace ableviscousdampingdevicewassetupatthelocationofdecoratedbracket todisipateseismicenergySixspecimensof pseudo clasic architecturejoints weredesignedandmanufactured，including thesinglebeam-columnjoint（SBJ）seriesanddoublebeamcolumnjoint（DBJ）series.Thehystereticcurvesandskeletoncurvesofthespecimenandtheviscous damperwereobtained bythe sinewavedynamicloadingwithdisplacementandfrequencycontrol，andthedeformationandenergydisipationcapacityofthe specimenandtheviscousdamper wereanalyzed，respectivelyTheresults indicate thattheimproveddynamicloadingsystemhas achieved goodtestresults，ndthefailure modeofteiegularsteeljintofpseudoclaicarchitectureis improvedbyistalliga viscous damperatthedecoratedbracketposition.Theviscous damper hasgood working stateafterbuckling in theplastic hinge areaofthebeamendofthespecimen，andthehysteresisringoftespecimenbecomesfullgraduall.Thelargerthedampingcofi cientofthedamper，thefulerthehysteresisringsoftenodeandthestrongertheenergydisipationcapacity.Withtheincreaseof damping coeficient，the bearing capacity of specimens with controlled joints is increased by 18%～46% compared with that of withoutcontrolledandtheviscousdamperincreases thebearingcapacityofspecimens withdoublebam-columnjointsoresig nificantly.Thedisplacementductitycoeficientofthespeimenisbtween1.77and2.O5，andtheductilityofthespeimenis slightly improved after the viscous damper is installed.The strength degradation coefcients are allabout1.0.

Keywords：pseudo-claicarchitecture;iregularsteeljoints;dynamiccyclicloading;viscousdampers;mechanicalproperties

随着木材资源的短缺和环境保护以及结构耐久、防火和大空间的需求[1，近年来中国传统建筑和现代钢结构相结合发展成的钢结构仿古建筑得到广泛应用[2]。（剩余18184字）