Izingxenye eziyinhloko zesakhiwo sensimbi ziyizinsika zensimbi eziboshwe ezimise okwe-H, imishayo nama-bracings.I-welding deformation ivame ukusebenzisa lezi zindlela ezintathu ezilandelayo zokulungisa amalangabi: (1) indlela yokushisisa ngomugqa;(2) Indlela yokushisisa indawo;(3) Indlela yokushisa engunxantathu.
1. Lungisa izinga lokushisa
Okulandelayo izinga lokushisa lokushisa ngesikhathi sokulungiswa komlilo (okwenziwe ngensimbi ethambile)
Ukulungiswa kwezinga lokushisa eliphansi 500 degrees ~ 600 degrees Indlela yokupholisa: amanzi
Ukulungiswa kwezinga lokushisa elimaphakathi 600 degrees ~ 700 degrees Indlela yokupholisa: umoya namanzi
Ukulungiswa kwezinga lokushisa eliphezulu 700 degrees ~ 800 degrees Indlela yokupholisa: umoya
Izexwayiso: Izinga lokushisa lokushisisa akufanele libe phezulu kakhulu lapho ukulungiswa kwelangabi liphezulu kakhulu, futhi ukuphakama kakhulu kuzobangela insimbi ukuthi ibe brittle futhi kuthinte ukuqina komthelela.I-16Mn ayikwazi ukupholiswa ngamanzi ngesikhathi sokulungiswa kwezinga lokushisa eliphezulu, okuhlanganisa izinsimbi ezinobukhulu obukhulu noma ukuthambekela kokuqina.
2. Indlela yokulungisa
2.1 Ukuguqulwa kwe-angular ye-flange plate
Lungisa ukwakheka kwamakholomu ensimbi amise okwe-H, imishayo nama-engeli asekelayo.Epuleti le-flange (ngaphandle kwe-weld yokuqondanisa) Ukushisa komugqa we-longitudinal (izinga lokushisa lokushisa lilawulwa ngaphansi kwama-degrees angu-650), qaphela ububanzi bokushisa abudluli uhla olulawulwa yizinyawo ezimbili zokushisela, ngakho-ke ungasebenzisi ukupholisa kwamanzi.Lapho ushisa emgqeni, qaphela: (1) akufanele ushiswe ngokuphindaphindiwe endaweni efanayo;(2) Ungacheleli ngesikhathi sokushisa.
2.2 I-arch engenhla nephansi nokuchezuka nokugoba
(1) Epuleti le-flange, elibhekene ne-weld longitudinal, kusukela phakathi kuya emikhawulweni emibili yokushisa okuqondile, ungalungisa ukuguquguquka kokugoba.Ukuze ugweme ukugoba nokusonta i-deformation, amabhande amabili okushisa aqhutshwa kanyekanye.Ukulungiswa kwezinga lokushisa eliphansi noma ukulungiswa kwezinga lokushisa eliphakathi kungasetshenziswa.Le ndlela ivumela ukunciphisa ukucindezeleka ku-weld, kodwa le ndlela ine-shrinkage enkulu ye-lateral ngesikhathi esifanayo ne-longitudinal shrinkage, okunzima kakhulu ukuyiqonda.
(2) Ukushisisa ngomugqa ku-flange plate kanye nokushisisa okungunxantathu kuwebhu.Sebenzisa le ndlela ukulungisa ukugoba kokugoba kwamakholomu, imishayo, izisekelo, umphumela uyamangalisa, ububanzi obuvundlile bomugqa wokushisisa ngokuvamile buthathwa 20-90mm, ubukhulu bepuleti buyihora, ububanzi bokushisa kufanele bube buncane, futhi inqubo yokushisisa kufanele. zinwetshwe kusukela phakathi kobubanzi ziye ezinhlangothini zombili.Ukushisa komugqa kusetshenziswa kangcono abantu ababili ngesikhathi esisodwa, bese ukushisa ububanzi bukanxantathu akumele budlule izikhathi ezi-2 ubukhulu bepuleti, futhi phansi kukanxantathu kulingana nobubanzi bokushisa obulinganayo bephiko elihambisanayo. ipuleti.Unxantathu oshisayo uqala phezulu bese unwebeka ukusuka phakathi nendawo ukuya ezinhlangothini, ushisisa ungqimba ngongqimba kuze kube phansi kukanxantathu.Izinga lokushisa akufanele libe phezulu kakhulu lapho kushisa iwebhu, ngaphandle kwalokho kuzodala ukuwohloka kokucindezeleka futhi kube nzima ukukulungisa.
Qaphela: Indlela yokushisa engunxantathu engenhla iyasebenza ekulungiseni ukugoba okuseceleni kwengxenye.Lapho kushisa, ukulungiswa kwezinga lokushisa eliphakathi kufanele kusetshenziswe, futhi ukuchelela kufanele kube kuncane.
(3) Ukuguqulwa kwamagagasi kwamakholomu, imishayo namawebhu okusekela
Ukuze silungise i-wave deformation, kufanele siqale sithole iziqongo eziphakeme futhi sisebenzise indlela yokushisisa amachashazi ngesando sesandla ukuze silungise.Ububanzi bechashazi lokushisisa ngokuvamile buba ngu-50 ~ 90mm, lapho ukujiya kwepuleti lensimbi noma indawo ye-wavy inkulu, ububanzi kufanele futhi bunwetshwe, obungacindezelwa d = (4δ + 10) mm (d ububanzi. indawo yokushisisa; δ ukujiya kwepuleti) kubalwa ukubala inani lokushisisa.I-grille ihamba ngokuzungeza ukusuka phezulu kwegagasi futhi ilungiswa ekushiseni okuphakathi.Lapho izinga lokushisa lifinyelela ku-600 kuya ku-700 degrees, isando sibekwe emaphethelweni wendawo yokushisa, bese i-sledgehammer isetshenziselwa ukushaya isando, ukuze insimbi endaweni yokushisa incinywe, futhi ukupholisa ukupholisa kuncishiswe.Ukucindezeleka kokunciphisa ngokweqile kufanele kugwenywe ngesikhathi sokulungiswa.Ngemuva kokulungisa ichashazi elilodwa, iphoyinti lesibili le-crest liyashiswa, njengenhla.Ukusheshisa izinga lokupholisa, insimbi ye-Q235 ingapholiswa ngamanzi.Le ndlela yokulungisa ingeyendlela yokushisisa amachashazi, futhi ukusatshalaliswa kwamaphoyinti okushisa kungaba amachashazi aminyene amise okweplamu noma iketango.Qaphela ukuthi ungeqi ku-750 degrees.
Izinqubo zokulungisa ze-fillet welds
Ama-welds we-fillet
Isigaba 5.23 sohlelo lwango-2015 lwe-AWS D1.1 sikhuluma ngezinhlinzeko mayelana namaphrofayili ashiselwe amukelekayo nangamukeleki.Uma ubukhulu be-fillet weld bukhulu kakhulu ngenxa yokunganaki, izinhlinzeko zephrofayili yokushisela ezibalwe eSigabeni 5.23 ngeke ziqondwe kahle.Ngokusho kwe-American Steel Structure Association, kucatshangwa ukuthi insimbi ye-weld eyeqile ayiphazamisi ukusetshenziswa kokuphela kwelungu, ngaphandle kokulungisa i-fillet weld, kungase kubangele imiphetho eyi-angular ye-weld fillet (kungakhathaliseki ukuthi ohlangothini olulodwa noma izinhlangothi zombili. ) ukuba mkhulu.Ukuzama ukususa insimbi yokushisela echazwe ngenhla kungase kubangele ukushwabana, ukuwohloka kanye/noma ukugqabuka kwe-weld.Ukuphathwa komumo we-fillet weld kuzolandela izimfuneko ezifanele ezibekwe eSigabeni 5.23.1 sohlelo lwango-2015 lwe-AWS D1.1.
Yiziphi izimo zokuhlanganisa ezamukelekile zokwakha ilunga lekhona?Isigaba 5.22.1 sohlelo lwango-2015 lwe-AWS D1.1 sithi ukusulwa kwempande okuvumelekile akukwazi ukudlula u-1.59mm (1/16 in.) ngaphandle kokuguqulwa.Ngokuvamile, uma usayizi we-weld ukhula ngokukhula kwesikhala sempande noma uma sekufakazelwe ukuthola i-angle ye-concave edingekayo, igebe lempande elivumelekile libhekwa njengelingeqi ku-4.76mm (3/16 in.).Ngogqinsi oludlula noma olulingana no-76.2mm (3 in.) Kumapuleti ensimbi, inani elivumelekile lokususa impande lingu-7.94mm (5/16 in.) uma usebenzisa amaphedi afanelekile.
Isikhathi sokuthumela: Jun-06-2022