后置翼墙法加固弱节点型RC框架试验研究

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关键词：钢筋混凝土；框架结构；抗震加固；后置翼墙；梁-柱节点；拟静力试验 中图分类号：TU375.4 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202308022

Abstract：Recentearthquakedamage investigations foundthatalargenumberofreinforcedconcreteframebuildings wereheavily destroyedatbeam-columnjointsandcolums，withoutformingthebeam-hingingmechanismexpectedinthedesig.Instalingreinforcedconcretewingwalsbesidetheexistingcolumnsremainsafundamentalandeffectivestrengthening method，byimproving seismic performance of both the columns and the joints，while promoting a beam-yielding mechanism. Two 1/2 -scale frame specimenswere manufactured，andoneofthem asstrengthenedbypostinstalationwingwall.Byquasistatic tests，hystereticbhav iour，deformationcapacityenergydisipationpowerandfailure modeoftetwospecimenswereexamined.Theresultsshowthat thestifess，earingcapacityandenergdisipationcapacityofthestrengthenedframeweresignificantlyimprovedAftestrength ening，failure modeof theframewaschanged fromjointsshearfailuretoexpectedbeam-hinging.Theeficiencyandapplicabilityof wing wallinstalltion method were validated forstrengthening existingframe structure buildings withseriouslyweak beam-column joints.

Keywords： reinforced concrete；frame structure；seismic strengthening;wing wall;beam-column joint;；quasi-static test

钢筋混凝土框架结构因受力传递路径清晰、结构布置灵活等优点而得到广泛应用[1。（剩余14065字）