1、重慶大學碩士學位論文鋼筋混凝土梁—薄墻正交節(jié)點試驗研究姓名：朱祖敬申請學位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：王志軍20060501IIAbstractTheperpendicularbeam–thinwalljointisonekindoftheveryimptantjointsinthereinfcedconcreteframeshearwallstructuresystemtheframetubestructuresystemwhi

2、charecommonlyusedinthehighrisebuildings.Theperfmancethestrengtheningmeasuresoftheperpendicularbeam–thinwallinterijointsaremainlystudiedinthispaper.Three1:2scaleR.C.perpendicularbeam–wallinterijointswithdifferentstrengthe

3、ningmeasuresweretestedunderconstantaxialloadonthetopofthewallcyclicverticalloadattheendofthebeam.Thestresspropertiesofthiskindofbeam–thinwalljointswithdifferentstrengtheningmeasuresgeometrieswerealsoanalyzedusingANSYSint

4、hispaper.Throughafementionedexperimentstheeticalanalysesthefollowingconclusioncanbeobtained.1.Theexperimentalstressconditionsoftheperpendicularbeam–walljointsattheearlystageareconsistentwiththeresultsofFEMelasticanalysis

5、.2.Spallingcracksresultedfromtensionfailureofconcreteinwalljointadjacentareaareprimarywhenthethinwall(includingthewallwithvisiblewidebeam)enduredoutofplanemoment.Thenumberareaofcracksonthebacksideofthewallwithconcealedco

6、lumnsaresmallerthanthewallwithvisiblewidebeam.3.Theconcealedcolumnsinwallhavelittleeffectonoutofplaneflexureofthejoint.Theconcealedcolumnscannotenhancethebendingresistancemomentfmedbytheasymmetricshearstressesonthecritic

7、alsectionsthuscannotimprovetheoutofplaneflexuralcapacityofthewallwhenthewallisthin.Thelackofhizontalanchagelengthoflongitudinalbarsisnotimprovedalso.4.Thevisiblewidebeamplaysagreatroleintheperpendicularbeam–thinwalljoint

8、.Thevisiblewidebeaminthewallcanenlargetheeffectivecriticalareatherefeenhancethebendingresistancemomentfmedbytheasymmetricshearstressesonthecriticalsections.Sooutofplaneflexuralcapacityofthewallcanbeincreasedsignificantly

9、.Theanchageoflongitudinalbarsbecomesbetterbecausethelackofhizontalanchagelengthoflongitudinalbarsisimproved.5.Thetsionalfailureofthevisiblebeamintheperpendicularbeam–thinwalljointisserious.Thiskindofjointhasarelativelypo