Isinyithi Esenziwe Ngokubandayo
Intsimbi epholileyo epholileyo ibhekiselele kwiiprofayili eziyinkimbinkimbi ezinqamlezayo ezenziwe ngentsimbi eshushu-eshushu okanye epholileyo phantsi koxinzelelo kwiqondo lokushisa.Ikwabizwa ngokuba yintsimbi ebhityileyo, luhlobo lwentsimbi yokwakha ekhanyayo.Intsimbi eyenziwe ngokubanda iye yaveliswa ngaphezu kweminyaka eyi-100, kwaye yaveliswa ekuqaleni kumatshini omnye onomatshini wokugoba.Ngowe-1910, iUnited States yaqala ukwakha iyunithi yokuqala eqhubekayo yokwenza umqulu.Emva kowe-1960, intsimbi ebunjwe ngokubanda iye yakhula ngokukhawuleza.Ngowe-1989, imveliso yayo yonyaka yafikelela kwiitoni ezizizigidi ezisi-8, kunye neentlobo ezingaphezu kwe-10,000 kunye neenkcukacha.Imveliso yentsimbi epholileyo kumazwe aphuhliswe yimizi-mveliso yenza malunga ne-5% yemveliso epheleleyo yensimbi.I-China yakha iyunithi yayo yokuqala yokuvelisa intsimbi epholileyo e-Shanghai ngo-1958. Ekupheleni kweminyaka yee-1980, kwakukho iiyunithi ezingaphezu kwama-30 ezenza iiyunithi, ezivelisa phantse iintlobo ze-100 kunye nemveliso yonyaka yeetoni ezingaphezu kwama-200,000 zentsimbi epholileyo.
Intsimbi epholileyo epholileyo luhlobo lwecandelo loqoqosho olunqamlezileyo, ubunzima obuncinane obuncinci, obubizwa ngokuba yintsimbi epholileyo okanye intsimbi epholileyo.Intsimbi epholileyo yinto ephambili yokwenza izakhiwo zetsimbi ezilula.Ineentlobo ngeentlobo ze-ultra-thin, ingqiqo kunye ne-cross-sections enzima engenakuveliswa ngokujikeleza okushushu.Xa kuthelekiswa nentsimbi eshushu eshushu, kwimeko yendawo efanayo ye-cross-sectional, i-radius ye-gyration inokunyuswa nge-50% ukuya kwi-60%, kwaye umzuzu we-inertia yecandelo unokunyuswa ngama-0.5 ukuya ku-3.0 amaxesha, ngoko ke amandla ezinto eziphathekayo anokusetyenziswa ngokufanelekileyo;(Oko kukuthi, isakhiwo sensimbi esenziwe nge-I-beam yendabuko, i-channel steel, i-angle yentsimbi kunye ne-steel plate) inokugcina malunga ne-30% ukuya kwi-50% yentsimbi.Kwezinye iimeko, ubungakanani bentsimbi esetyenziswe kwizakhiwo zetsimbi ezibandayo zilingana nezakhiwo zekhonkrithi eziqinisiweyo phantsi kweemeko ezifanayo, okuyintsimbi yecandelo loqoqosho.
Intsimbi epholileyo epholileyo inoluhlu olubanzi lokusetyenziswa, kwaye ngokuqhelekileyo isetyenziselwa ukwenza iinxalenye zesakhiwo kunye neengxenye ezincedisayo kumasebe emveliso afana nokwakha, izithuthi zikaloliwe, iimoto kunye neenqanawa.
Kukho iintlobo ezininzi zentsimbi epholileyo epholileyo, eyahlulahlulwe ibe yimilo evulekileyo, evaliweyo kwaye evaliweyo.Iimveliso eziphambili ziyintsimbi epholileyo eyenziwe ngumjelo, intsimbi ye-angle, intsimbi emile njenge-Z, ipleyiti yentsimbi epholileyo epholileyo, i-square pipe, i-rectangular pipe, i-electric welded special-shaped steel pipe, rolling shutter door Linda.Intsimbi epholileyo eveliswe ngokubanzi inobunzima be-6mm okanye ngaphantsi kunye nobubanzi be-500mm okanye ngaphantsi.Iimpawu eziqhelekileyo ezisetyenziswayo kwilizwe lethu ziyintsimbi ye-equilateral angle (ubude bomlenze 25～75mm), intsimbi yangaphakathi yokugoba intsimbi (ubude bomlenze 40～75mm), intsimbi yesitishi (ephezulu 25～250mm), intsimbi yangaphakathi yokugoba intsimbi (ephezulu 60～250mm), ukugoba intsimbi emise okwe-Z (i-100 ~ 180mm ukuphakama) kunye neenkcukacha ezingaphezu kwama-400 kunye neentlobo.Iimveliso zisetyenziswa ngokubanzi kwimigodi, ukwakhiwa, oomatshini bezolimo, ukuthutha, iibhulorho, i-petrochemical, imboni yokukhanya, i-electronics kunye namanye amashishini.
Intsimbi epholileyo yinto ephambili yokwenza izakhiwo zetsimbi ezilula, kwaye zenziwe ngamacwecwe ensimbi abandayo okanye iintambo zetsimbi.Ubukhulu bodonga lwayo abunakwenziwa kuphela buncinci kakhulu, kodwa bubuye bube lula kakhulu inkqubo yokuvelisa kunye nokuphucula ukusebenza kakuhle kwemveliso.Inokuvelisa iiprofayili ezahlukeneyo kunye neentsimbi ezenziwe ngokubanda zezixhobo ezahlukeneyo ezinobunzima obufanayo bodonga, okunzima ukuvelisa ngeendlela eziqhelekileyo ezishushu ezishushu, kodwa ezinemilo enzima yecandelo.Ukongeza ekusetyenzisweni kwizakhiwo ezahlukeneyo, intsimbi eyenziwe ngokubanda isetyenziswa ngokubanzi kwimveliso yemoto kunye nokuveliswa koomatshini bezolimo.Kukho iintlobo ezininzi zetsimbi ezibandayo, ezahlulwe zibe zivulekile, zivaliwe kwaye zivaliwe ngokwecandelo.Ngokwemilo, kukho intsimbi epholileyo eyenziwe ngumjelo, intsimbi ye-angle, intsimbi emise okwe-Z, ityhubhu yesikwere, ityhubhu enoxande, ityhubhu enobumba obukhethekileyo, ucango oluvaliweyo, njl. njl. ulwahlulo lwamandla emveliso yeemveliso zetsimbi ezibandayo, zongezwa intsimbi ecolekileyo, kunye nokwandisa izibonakaliso ezithile zokuvavanya kwiipropati zomatshini zemveliso.
