Ukukhetha I-Warehouse Yokuthiwa Ngamaphakathi Okwesiliva?

Qaphela Ubukhulu Bemateriali Nobukhulu Bekuphatha Kwe-corrosion

Ubukhulu bemateriali yisibhakabhaka sokugcina ubukhulu besithili sesithili esisemthwakathini. Ukukhetha amagradi amahle wesithili—futhi ukubambisana nazo izimo zokubhekwa kwezinhlobo nezinkinga zokuload—kuyadetermina ngqo ubukhulu besithili bokuphatha kwe-corrosion, ukuphatha kwe-fatigue, nobukhulu bekuphatha kwe-mechanical.

Amagradi Wesithili (Q235, Q355, ASTM A653) Nobukhulu Bakho Kube Nokuthiwa Kwesikhulu Sokugcina

• Q235 : Iyonga futhi isetshenziswa kabanzi ekusetshenzisweni kwangaphakathi noma kokukhishwa okuphansi, kepha ayinakho ukumelana nokugqwala ezindaweni ezinomswakama, ezisogwini noma zezimboni ngaphandle kokuvikelwa okwengeziwe.
• Q355 : Inamandla aphezulu okudonsa (355 MPa) namandla okudonsa (470630 MPa), okwenza kube kuhle ezindaweni ezinomthwalo osindayo, ezicindezela kakhulu njengokusekelwa kwe-mezanin noma imishayo yomgwaqo we-crane.
• I-ASTM A653 : Ichaza ishidi lensimbi elibunjiwe elishisayo elishisiwe elinomqulu olawulwayo we-zinc coating mass (isb. G90, G185). Isendlalelo sayo sokuzidela se-zinc sandisa isikhathi sokusebenza ngeminyaka eyi-1520 uma siqhathaniswa nensimbi engamboziwe ezimweni zezulu ezinesimo sezulu esiphakathi nendawoeqinisekiswe ngokuhlolwa okusheshisiwe kokusafaza usawoti ngokwe-ASTM B117.

Ukwehluleka kwesakhiwo kwehla ngo-40% lapho ukukhethwa kwekhwalithi yensimbi kuhambisana ngqo nemithwalo yokusebenza nokuchayeka kwemvelo, ngokusho kwe-ASCE 2023 Iziqondiso Zensimbi Yokwakha Ezakhiweni Zemboni .

Ukufanisa Ukuvikelwa Kokugqwala Nemvelo: Umswakama, Ukusawoti Ogwini, Nokungcolisa Kwezimboni

Ukuvikelwa kokugqwala kufanele kube okuhambisana nokusebenza kungakhiwa ngokweqile noma kungachazwanga kahle. Izindwangu ezijwayelekile 'ezifana ncamashí' zibeka engozini yokuwohloka ngaphambi kwesikhathi lapho izimo zidinga khona ukunemba.

Emazweni apho amachloride ayisikhele, izinhlangano zezincamtho ezingafanani zihamba ngokuphambuka kwemithwalo yokuqhubeka kwe-corrosion ku-70%, ngokwesibonelo sika-NACE International ngo-2022 Ukukhulisa Ukugcina Kwe-corrosion Ematholeni Emanzi ukuthiwa kwezinye izindaba—njengokuthiwa kwe-SSPC-QP 2 yokuvumela umsebenzisi wezincamtho noma ukuthiwa kwe-ISO 12944 kubalulekile kabusha ngaphambi kokuzicombulula.

Qinisekisa Ukuphatha Kwemithwalo Yomkhakha Ngokulingana Nokukhanya Kwemikhakha Nezimithwalo Zokusebenza

Ukuphatha Kwemithwalo Yomkhakha, Yomkhakha Womkhakha, Nezimithwalo Zokugcina Kwezinkundla Emakhakheni Ezenziwe Ngamathali

Izakhiwo zensimbi zensimbi zidinga ubunjiniyela obufanele bezingozi zabo zendawo ethile kunomsebenzi wokuhlanganisa nje kuphela. Ezindaweni ezineqhwa eliningi njengezingxenye ezisenyakatho ye-United States noma izifunda zezintaba kulo lonke elase-Asia, imiklamo yophahla kufanele ikwazi ukubhekana nemithwalo yeqhwa phansi efinyelela cishe kumakhilogremu angama-50 nge-square foot ngayinye ngokusho kwezindinganiso ze-IBC kusukela ngo Izindlu ezinophahla oluthambekele noma izinhlelo zokushisa zisiza ekuphatheni ukuqongelela iqhwa nezinkinga zokukhukhuleka. Izakhiwo eziseduze nogu zibhekene nenye inselele. Kumelwe zimelane nomoya ovunguza ngaphezu kwamamayela angu-150 ngehora njengoba kuchazwe eziqondisweni ze-ASCE 7-22 zezakhiwo zeSigaba III. Lokhu kusho ukunaka ngokukhethekile indlela ukwakheka kwezindonga okunamathela ngayo ezindongeni nokuqiniswa okwengeziwe emaphethelweni esakhiwo lapho umoya ugxila khona. Lapho kuziwa ezindaweni ezithandwa ukuzamazama komhlaba, onjiniyela bathembela ekwakhiweni kohlaka olungaphazamiseki oluhambisana nemininingwane ye-AISC 341 kanye nezixhumi ezingagoba futhi zigobe ngaphandle kokuphulwa lapho kuzamazama umhlaba. Izixazululo ezingokoqobo zihlanganisa amakholomu asekelayo, imicu emikhulu ezindaweni eziyinhloko zesakhiwo, kanye nalezo zingcwecwe zensimbi ezixhumanisa imishayo namakholomu ezindaweni ezibalulekile. Lezi zici zihlanganiswe ndawonye zivimbela cishe izingxenye ezintathu kwezine zazo zonke iziphazamiso zesakhiwo ezibangelwa izimo zezulu ezimbi noma izinhlekelele, ngokusho kokutholakele okwanyatheliswa i-Structural Engineering Institute ngemva kokuhlaziya umonakalo odalwe izinhlekelele zemvelo zamuva.

Izindaba Zokuxhuma Ezizingeni Eliphele: Izindlela Zokuxhuma Ngokwekhwela, Amabholthi Amanye Amahle, Namasimbi Okuxhuma

Izakhiwo zensimbi zithembele kakhulu ekuxhumekeni kwazo, okwenza izinto njengesimiso sezinzwa - lapho lokhu kwehluleka, izinkinga zisakazeka ngokushesha kuyo yonke indawo. Ngokwezindinganiso ze-AWS D1.1, ama-welds we-Complete Joint Penetration (CJP) enza ukuqhubeka okuphelele kwamandla emalungeni ohlaka olukhulu. Lokhu kubaluleke ngokukhethekile lapho kunengcindezi ephindaphindwayo evela ekuzamazameni komhlaba noma emimoyeni enamandla. Ukuze kube nezixhumanisi eziboshiwe ezidinga ukuhlala ziqinile ngesikhathi sokuhamba, onjiniyela bachaza ama-ASTM A325 noma ama-A490 ama-bolts aqine kakhulu. Lezi zigcina amandla okuqinisa afanele ngisho nalapho izinto zizamazama. Ama-anchor bolts agqoke i-epoxy kufanele afakwe ekujuleni ngokwanele emhlabathini, ngokuvamile okungenani izikhathi ezingu-30 ububanzi bawo, ukuze agcine eqinile ezimweni ezahlukene zenhlabathi. Lapho kuziwa ekuqinisekiseni ukuthi yonke into isebenza kahle emkhakheni, ukuhlola kunendaba kakhulu. Ukuhlola i-ultrasonic kuqinisekisa izinga le-weld, futhi ukukala kahle ukuqina kwe-bolt kwenza umehluko omkhulu. Ucwaningo olwenziwe yi-Structural Engineering Institute lubonisa ukuthi lolu hlobo lwe-QA lwasensimini lunganciphisa ukwehluleka kokuxhuma cishe ngamaphesenti amabili kwamathathu, ngokusho komhlahlandlela wabo wezenzo ezinhle zango-2023.

Khetha Amakhampani Okuhlinzekisa Okuphelele Nokuthintana Kwamaphaneli Okuthintana

Ukugalvaniza Kwesikhathi Sokukhula, Izilimi Zokuzinc-Nokuzinc-Aluminum, Nokuthintana Okuthintana Kwemithombo Yezinkundla Zokubhala Ngokwesikhathi Kukusebenza Kwemithombo Yezinkundla

Indlela enhle yokumboza idinga ukulinganisela ukuvikelwa kwe-metallurgical, ukusebenza kahle kwesithiyo, nokuphathwa kokushisa ngaphezu kokubukeka okuhle noma ukonga imali kusengaphambili. Ukufakwa i-hot dip galvanizing ngokuvumelana ne-ASTM A123/A153 kwakha ungqimba oluqinile lwe-zinc iron alloy oluzilungisa lapho luklwebhekile futhi luvikele ekugqileni ngisho nalapho insimbi isikiwe. Ama-alloys amasha e-zinc aluminium afana neGalvalume aqukethe cishe i-55% ye-aluminium, i-43.5% ye-zinc ne-1.5% ye-silicon asebenza kangcono ezimweni zangaphandle, ikakhulukazi ekulweni nokungcola kwe-chloride ne-sulphur okuvela emoyeni. Ukuhlolwa kubonisa ukuthi lezi zinto zihlala isikhathi eside izikhathi ezingu-3 kuya kwezingu-4 lapho zihlolwa ngosawoti uma kuqhathaniswa nensimbi evamile ebiyelwe. Ukungeza ama-polyurethane topcoat amelana nesimo sezulu kwenza izindawo zibonise ukukhanya kwelanga okungu-85%, okungabangela ukushisa phansi kube cishe ama-degree Celsius angu-15 kuya kwangu-20. Lokhu kusiza ekunciphiseni ukucindezeleka okwenziwa izikulufo namalungu epanel okubangelwa ukushintsha kwamazinga okushisa usuku lonke. Lapho zihlanganiswa namapaneli ensimbi angenawo umswakama anezinhlamvu eziqinile zezinhlayiya nezikhumba ezihlanganiswe nezimboni, sithola izinhlelo ezilwa nokugqwala futhi zithuthukise nokusebenza kahle kwamandla. Lezi zingqimba ezivalekile ngokuvamile zinamanani e-R afinyelela ku-R32, zinciphisa izindleko zokushisa nokupholisa cishe ngo-25 kuya ku-30% ngokwezifundo zamuva. Njalo cabanga ngezingubo namabhodi njengengxenye yohlelo olulodwa oluphelele kunokuba kube izingxenye ezihlukene. Le ndlela iqinisekisa ukuthi konke kusebenza kahle ngokuhamba kwesikhathi ngaphandle kokuphazamisa ukunamathela phakathi kwezendlalelo ezahlukene.

Qinisekisa Amakhredensheli, Amagama Okuhlonipha, nokuhlonipha Kwakho Kwezindawo Zokusebenza

Ukuthiwa Kwe-AISC, Ukuphatha Ngokulingana Ne-ISO 9001, nokulungiswa Kwemithambo Yezindawo Zokusebenza Ukuze Kwenziwe Ukubaluleka Kwesikhumba Sasezindaweni Zokusebenza

Ukufaka iziqu akuyona nje ukugcwalisa amafomu nokusayina imibhalo. Empeleni kubonisa ukuthi inkampani ingaletha ini ngempela. Lapho umkhiqizi ethola isitifiketi se-AISC, ufakazela ukuthi uhlangabezane nezindinganiso eziqinile eziphathelene nabasebenzi abaqeqeshiwe, izinqubo eziqinisekisiwe, izindlela zokuhlola ezifanele, nokulandeleka okugcwele kuyo yonke imisebenzi yabo. Lokhu kwenza umehluko omkhulu emkhakheni lapho amaphutha e-weld namaphutha wokulinganisa kwenzeka kaningi, okubalulekile ngoba lezo zinkinga zingathinta kakhulu ukuthi izakhiwo zimelana kanjani nokugqwala futhi zigcine ubuqotho besakhiwo ngokuhamba kwesikhathi. Izinga le-ISO 9001:2015 liyaqhubeka lisungula uhlelo olusemthethweni lokuphathwa kwekhwalithi oluhlanganisa zonke izinyathelo kusukela ekutholeni izinto zokusetshenziswa kuya ekwakheni izakhiwo eziphelile. Lokhu kusiza ukugcina izinto zihambisana phakathi kwamaphrojekthi ahlukahlukene nemikhiqizo. Ukuhambisana namakhodi ezakhiwo kungenye indawo ebalulekile. Abakhiqizi kudingeka babonise ukuthi bayaqonda futhi bayayilandela imithetho yendawo efana ne-International Building Code, imihlahlandlela ye-ASCE 7, kanye nanoma yimiphi imithetho ekhethekile eqondene nezifunda ezithile. Abahlinzeki abahle nabo abakhulumi nje ngalezi zinto. Zibaqinisekisa ngezinqubo zokubalwa kwezinto eziqondile, zicele ochwepheshe abazimele ukuba babuyekeze umsebenzi wazo, futhi zinikeza iziqinisekiso zesikhathi eside (ngokuvamile iminyaka engu-20 noma ngaphezulu) ezihlanganisa konke kusukela ezintweni ezisetshenzisiwe kuya ekutheni zenziwe kahle kangakanani nokuqina kokumboza. Amaphakheji esiqinisekiso ahlakaniphile ahlanganisa nokusekelwa okuqhubekayo ngezinto ezinjengokuhlolwa kokugqwala njalo, iseluleko sokuthi ungazifaka nini futhi kanjani izitsha zokugqokisa kabusha, nokufinyelela okulula kochwepheshe bezobuchwepheshe abangasiza ekuxazululeni izinkinga ngaphambi kokuba zibe yizinkinga ezinkulu endleleni.

Imibuzo Emaninzi (FAQ)

Yiziphi izinhlobo zensimbi ezivame kakhulu ezisetshenziswa ezindlini zokugcina izakhiwo zensimbi?

Izinhlobo zensimbi ezivame ukusetshenziswa zifaka i-Q235 yezinhlelo zokusebenza eziphansi, i-Q355 yezindawo ezinokucindezeleka okukhulu, ne-ASTM A653 enokufakwa kwe-zinc ukuze ihlale isikhathi eside ezindaweni ezahlukahlukene.

Izici zemvelo zithinta kanjani ukukhethwa kokumbozwa kwesakhiwo sensimbi?

Izici zemvelo ezinjengosawoti ogwini, umswakama, nezingcolisi zezimboni zinquma uhlobo lohlelo lokuvikela ukugqwala oludingekayo ukuze kuqinisekiswe ukuphila isikhathi eside nokusebenza.

Ingabe ukugunyazwa kubalulekile ezindlini zokugcina izakhiwo zensimbi?

Yebo, izitifiketi ezinjenge-AISC ne-ISO 9001 ziqinisekisa ukuhambisana nezindinganiso zekhwalithi, ziqinisekisa ukuthi izakhiwo zakhiwe ukuze zihlale isikhathi eside futhi zimelane nokugqwala ngempumelelo.