Izvo zvikamu zvikuru zvechimiro chesimbi zvakashongedzwa neH-shaped steel columns, matanda uye bracings.Welding deformation inowanzoshandisa nzira nhatu dzinotevera dzekugadzirisa moto: (1) mutsara wekupisa nzira;(2) Spot kudziyisa nzira;(3) Triangle kudziyisa nzira.
1. Gadzirisa tembiricha
Izvi zvinotevera tembiricha yekudziya panguva yekugadziriswa kwemurazvo (yakagadzirwa nesimbi yakapfava)
Kugadziriswa kwekushisa kwakadzika 500 degrees ~ 600 degrees Kutonhora nzira: mvura
Kururamisa tembiricha yepakati 600 madhigirii ~ 700 madhigirii Kutonhora nzira: mhepo nemvura
Kugadzirisa tembiricha yepamusoro 700 madhigirii ~ 800 madhigirii Kutonhora nzira: mhepo
Chengetedzo: Tembiricha yekudziya haifanirwe kunge yakanyanya kukwirisa kana murazvo wemoto wakanyanya kukwirira, uye yakanyanyisa kukonzeresa kuti simbi iite brittle uye kukanganisa kuoma kwesimba.16Mn haigone kutonhodzwa nemvura panguva yekugadziriswa kwekushisa kwepamusoro, kusanganisira simbi dzine ukobvu hukuru kana kuomesa maitiro.
2. Kururamisa nzira
2.1 Angular deformation yeflange plate
Rongedza deformation yeH-yakaita sesimbi mbiru, matanda uye ekutsigira angles.On flange ndiro (kunze kurongeka weld) longitudinal linear kudziyisa (kudziyisa tembiricha inodzorwa pazasi 650 madhigirii), teerera kudziyisa siyana haapfuuri siyana kudzorwa netsoka mbiri welding, saka usashandisa mvura kutonhora.Paunenge uchipisa mumutsara, teerera kune: (1) haifaniri kudzokororwa kupisa munzvimbo imwechete;(2) Usadiridza panguva yekupisa.
2.2 Yekumusoro arch uye yakaderera deflection uye bending deformation
(1) Pamusoro peplate yeflange, yakatarisana neiyo longitudinal weld, kubva pakati kusvika kumagumo maviri ekudziya kwemutsara, unogona kugadzirisa deformation yekukotama.Kuti udzivise kukotama uye kumonyorora deformation, mabhandi maviri ekudziya anoitwa panguva imwe chete.Kugadziriswa kwekushisa kwepasi kana kugadzirisa kwekushisa kwepakati kunogona kushandiswa.Iyi nzira inobatsira kuderedza kushushikana mu weld, asi nzira iyi ine yakakura lateral shrinkage panguva imwechete iyo yakareba shrinkage, iyo inonyanya kuoma kubata.
(2) Linear kudziyisa paflange ndiro uye kudziya katatu pawebhu.Shandisa nzira iyi kugadzirisa kupenyeka kwembiru, matanda, mabhureshi, mhedzisiro inoshamisa, yakatwasuka mutsara yekupisa yakafara kazhinji inotorwa 20-90mm, ukobvu hweplate ndeyeawa, kupisa kunofanirwa kuve kudiki, uye maitiro ekudziya anofanira. ngachitambanudzwe kubva pakati pehupamhi kusvika kumativi maviri.Kupisa kwemutsara kunonyanya kushandiswa nevanhu vaviri panguva imwe chete, uye ipapo kupisa hupamhi hwegonyonhatu yegonyo haifaniri kudarika 2 nguva yehukobvu hweplate, uye pasi pekona yakaenzana nehupamhi hwekupisa kwehupamhi hwebapiro rinoenderana. ndiro.Kupisa katatu kunotangira kumusoro uye kunobva kwawedzera kubva pakati kuenda kumativi, ichipisa kumusoro nechidimbu kusvika pasi pegonyo.Iyo tembiricha haifanirwe kunge yakakwira zvakanyanya pakudziya webhu, zvikasadaro zvinokonzeresa deformation deformation uye zvakaoma kugadzirisa.
Ongorora: Iyo iri pamusoro pemakona ekudziya nzira inoshandawo kune mativi bend kururamisa kwechikamu.Paunenge uchipisa, kururamisa kwekushisa kwepakati kunofanira kushandiswa, uye kudiridza kunofanira kuva kushoma.
(3) Wave deformation yembiru, matanda uye tsigiro webs
Kuti tigadzirise deformation yemafungu, tinofanira kutanga tawana nhongonya dzakasimudzwa uye toshandisa dot kudziyisa nzira nesando yeruoko kugadzirisa.Iyo dhayamita yedoti rekudziya rinowanzo 50 ~ 90mm, kana ukobvu hwendiro yesimbi kana nzvimbo yewavy yakakura, dhayamita inofanirawo kuwedzerwa, inogona kudzvanywa d = (4δ + 10) mm (d ndiyo dhayamita. yenzvimbo yekudziya; δ ndiko ukobvu hweplate) inoverengerwa kuverenga kukosha kwekudziya.Iyo grille inofamba mumhepo kubva pamusoro pemasaisai uye inogadziriswa pane yepakati tembiricha.Kana tembiricha inosvika 600 kusvika 700 madhigirii, nyundo inoiswa kumucheto kwenzvimbo yekudziya, uye ipapo sledgehammer inoshandiswa kurova nyundo, kuitira kuti simbi iri munzvimbo yekudziya inosvinwa, uye kutonhora kunotonhora kunoputika.Kunyanya shrinkage kushushikana kunofanira kudziviswa panguva yekugadzirisa.Mushure mekugadzirisa imwe doti, yechipiri crest poindi inopisa, sepamusoro.Kuti ikurumidze kutonhora, iyo Q235 simbi inogona kutonhodzwa nemvura.Iyi nzira yekururamisa ndeyeiyo dot kudziyisa nzira, uye kugoverwa kwenzvimbo dzekudziya kunogona kuve-prum-shaped kana cheni-mhando dense dots.Chenjerera kuti usapfuure 750 madhigirii.
Kugadzirisa maitiro e fillet welds
Fillet welds
Chikamu 5.23 che2015 edition yeAWS D1.1 inobata nezvinodiwa maererano neanogamuchirwa uye asingagamuchirwe maprofayiri akaiswa.Kana saizi yefillet weld yakakura zvakanyanya nekuda kwekuregeredza, iyo welding profiles yakanyorwa muChikamu 5.23 ichave isinganzwisisike.Maererano neAmerican Steel Structure Association, tichifunga kuti yakawandisa weld simbi haikanganisi kushandiswa kwekuguma kwenhengo, pasina kugadzirisa fillet weld, inogona kukonzera makona emapendero efillet weld (kungave kune rimwe divi kana mativi maviri. ) kuva mukuru.Kuedza kubvisa yakawandisa weld metal inotsanangurwa pamusoro apa inogona kukonzera shrinkage, deformation uye / kana kuputika kweweld.Kubatwa kwechimiro chefillet weld kuchatevera zvinodiwa zvinodiwa zvakataurwa muChikamu 5.23.1 che2015 edition yeAWS D1.1.
Ndeapi mamiriro egungano anogamuchirwa ekugadzira mubatanidzwa wekona?Chikamu 5.22.1 che2015 edition yeAWS D1.1 inotaura kuti midzi inobvumirwa kubvisa haigoni kudarika 1.59mm (1/16 in.) pasina kugadziriswa.Kazhinji, kana weld size inowedzera nekuwedzera kwemudzi nzvimbo kana kana yakaratidza kuwana inodiwa inobudirira concave angle, iyo inobvumirwa midzi gap inofungidzirwa kuti haipfuuri 4.76mm (3/16 in.).Pahukobvu hunodarika kana kuenzana ne76.2mm (3 in.) Pamarata esimbi, midzi inobvumirwa clearance value i7.94mm (5/16 in.) paunenge uchishandisa mapedhi akakodzera.
Nguva yekutumira: Jun-06-2022