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1、學(xué)兔兔www.xuetutu.com第32卷第3期JournalofCivil．Architectural&EnvironmentalEngineering土木建筑與環(huán)境工程V0L32No．32O1O年06月Jun．2010鋼筋混凝土框架夾心節(jié)點設(shè)計方法楊治洪，李英民，劉建偉，韓星(1．重慶大學(xué)土木工程學(xué)院，重慶400045；2．重慶市南岸區(qū)建委，重慶400060)摘要：為給出鋼筋混凝土框架夾心節(jié)點的設(shè)計方法，依據(jù)試件破壞特征等試驗結(jié)果提出了驗算內(nèi)容與設(shè)計準(zhǔn)則，通過對夾心節(jié)點抗震性能影響因素的分析及
2、其與傳統(tǒng)節(jié)點的對比提出了設(shè)計參數(shù)限值，基于試驗試件的承載力并結(jié)合非線性有限元模擬的結(jié)果提出了核心區(qū)承栽力驗算公式。結(jié)果表明：為達(dá)到所需的位移延性并滿足承載力要求，需設(shè)置剪壓比、軸壓比、柱梁混凝土強度比、最小配箍量等參數(shù)限值約束夾心節(jié)點適用范圍；通過核心區(qū)受壓驗算、受剪驗算保障節(jié)點的承載力必要時可采取適當(dāng)?shù)募訌姶胧?；此外需要采取合理的?gòu)造措施避免梁筋過度的粘結(jié)退化。關(guān)鍵詞：夾心節(jié)點；擬靜力試驗；有限元；設(shè)計方法中圖分類號：TU375．4文獻(xiàn)標(biāo)志碼：A文章編號：1674—4764(2010)03—003
3、5—06DesignMethodofReinforcedConcreteSandwichBeam’columnJointsYANGZhi—Hong～，LIYing—Min，LIUJian-Wei，HANJun(1．CollegeofCivilEngineering，ChongqingUniversity，Chongqing400045，P．R．China2．Nan’anConstructionCommittee，Chongqing，400060，P．R．China)Abstract：Theexper
4、imentalresultsofreinforcedconcretesandwichbeam—columniointswerestudiedintensivelyandfiniteelementmethodsimulationofsuchjointswereperformedforthesakeofdesignmethod．Basicdesigncriterionandcomputationcontentswereprovidedaccordingtofailuremodeofspecimensan
5、dotherexperimentalresults．Andthelimitsofparameterswereproposedbasedontheanalysisofseismicbehaviorinfluencefactorsandcomparisonoftraditionaljointsandsandwichjoints．Hence，formulasofloadresistantcapacitywereacquiredbytheresultsofloadresistantcapacityofspe
6、cimensandnonlinearfiniteelementmethodsimulation．Itisfoundthatthreemeasuresshouldbetakenforsandwichjointsinordertoreachdemandedductilityandloadresistantcapability．Firstly，severalparametersshouldbelimited，includingshear—compressionratio，axialloadratio，ra
7、tioofbeamconcretestrengthtocolumnconcretestrength，andminimalamountoftransversereinforcementofjoint．Secondly，shearloadresistantcapacityandaxialcompressiveloadresistantcapacityshouldbecomputedtoensureloadresistantcapabilityofjoint，andessentialstrengthenm
8、easurescouldbeappliedifnecessary．Thirdly，appropriateconstructiondetailsshouldbetakentoavoidreducingofbeambaranchoragecapacity．Keywords：SandwichJoints，Quasi—statictest，F(xiàn)initeElementMethod，DesignMethod對于高層建筑中普遍存在的柱混凝土強度高于強度與柱相同的節(jié)點)相比，此類節(jié)點
