Izindonga zamakhethini ensimbi

Idizayini yesimanje yodonga lwamakhethini ngokuvamile idinga izisekelo zesakhiwo eziqinile njengoba ziguquguquka ukuze zihambisane nezibaluli zanamuhla zamahhala ezikhulayo, ama-engeli ayinselele, nobuhle obuyindida obugqoke ingilazi. Amafreyimu odonga lwamakhethini ensimbi angabhekwa njengenketho enhle ekwakhiweni kodonga lwamakhethini namuhla. Isikhathi eside, idumela lensimbi njengehhashi lomsebenzi wemboni yesimanje yokwakha lizuzwa kahle. Kusukela kumabhuloho akhuphukayo kuye kumabhilidi, iyakwazi ukumelana nemithwalo yesakhiwo edinga kakhulu ngaphandle kokonakala, ukuqhekeka, ngisho nokuqhekeka ngokuhamba kwesikhathi. Naphezu kokusebenza kwayo okukhethekile, imikhawulo yokukhiqiza ivimbele ukusetshenziswa kwayo kabanzi njengento eyinhloko yokufaka uhlaka emibuthanweni yodonga lwamakhethini acwebezelayo. Kodwa-ke, eminyakeni yamuva nje, izindlela ezithuthukisiwe zokucubungula ziye zayinqoba le nselele. Abanye abahlinzeki bodonga lwamakhethini bathuthukise zonke izingxenye zengxenye kuze kube yilapho uhlelo oluphelele luvame ukutholakala khona, okuhlanganisa: 1) imininingwane yokuxhumana nehadiwe; 2) i-gasketing; 3) amapuleti okucindezela kwangaphandle kanye namakepisi ekhava; kanye 4) neminyango ehambisanayo nezinhlelo zokungena, kanye nemininingwane. Ngaphezu kwalokho, isistimu yodonga lwamakhethini oluphelele lungaba usizo ekwenzeni lula futhi kufane nezindlela zokwenza kanye nokufaka, kuyilapho lisahlangabezana nemibandela yokusebenza ephezulu edingekayo ekwakhiweni kwezindonga zamakhethini zesimanje—kungakhathaleki ukuthi iyiphi into yokufaka uzimele ekhethiwe. Isibonelo, ukumelana namanzi kungaba kukhulu ngamaphesenti angu-25 ohlelweni lwamakhethini ensimbi angekho eshalofini kunesistimu yodonga lwamakhethini e-aluminium extruded evamile. Futhi, ukungena komoya cishe akukho ezindongeni zamakhethini ensimbi. Uma wenze isinqumo ekukhethweni kodonga lwamakhethini ensimbi kuphrojekthi yokwakha, kunezingqinamba ezimbalwa zokusebenzisa insimbi ngokugcwele ekusetshenzisweni kodonga lwamakhethini. Uma sikhuluma ngokuqondile, insimbi iqinile futhi inamandla amakhulu okuthwala ngemodulus ye-Young cishe eyizigidi ezingu-207 kPa (30 million psi), uma kuqhathaniswa ne-aluminium, cishe eyizigidi ezingu-69 kPa (i-psi eyizigidi ezingu-10). Lokhu kuvumela ochwepheshe bedizayini ukuthi bacacise amasistimu odonga lwamakhethini ensimbi anama-span amakhulu amahhala (kungaba ukuphakama okuqondile kanye/noma ububanzi bemojuli evundlile) kanye nobukhulu obuncishisiwe bozimele kunezindonga zamakhethini ze-aluminium ezivamile ezinobukhulu obufanayo nemithwalo esetshenzisiwe. Ngaphezu kwalokho, iphrofayili yensimbi ngokuvamile iba izingxenye ezimbili kwezintathu zosayizi wephrofayela ye-aluminium eqhathanisekayo kuyilapho ihlangabezana nemibandela efanayo yodonga lwamakhethini. Amandla ensimbi emvelo ayivumela ukuthi isetshenziswe kumagridi angewona awonxande, lapho ubude belungu lozimele bungase bube bude kunalokho ngokuvamile obudingeka kumagridi odonga lwamakhethini avamile, awunxande ovundlile/ome mpo. Eminyakeni yakamuva, ngenxa yezindlela ezithuthukisiwe zokucubungula insimbi, ingakwazi ukunamathisela ezigidini zensimbi zomumo ohlukene, okuhlanganisa okungenalutho, i-I-, T-, U-, noma i-L-channel, nama-mullions angokwezifiso. Ngezindleko zodonga lwamakhethini ezinengqondo, kungaba okumangalisayo kuwe ukuthi ube nezindonga zamakhethini ensimbi ezehlukene ezitholakalayo kuphrojekthi yakho yokwakha.