Umgangatho omtsha we-steel rebar ufikile kwaye uza kuqaliswa ngokusesikweni ekupheleni kukaSeptemba

Inguqulelo entsha yomgangatho wesizwe we-rebar yentsimbi i-GB 1499.2-2024 "intsimbi yekhonkrithi eqinisiweyo inxalenye yesi-2: iibha zentsimbi ezigoqiweyo ezishushu" iza kuqaliswa ngokusesikweni nge-25 kaSeptemba 2024

Kwixesha elifutshane, ukuphunyezwa komgangatho omtsha kunempembelelo encinci kwixabisoi-rebarimveliso kunye norhwebo, kodwa ekuhambeni kwexesha ibonisa ingcamango ekhokelayo iyonke yesiphelo somgaqo-nkqubo wokuphucula umgangatho weemveliso zasekhaya kunye nokukhuthaza amashishini esinyithi ukuya kwinqanaba eliphakathi neliphezulu lomxokelelwane wemizi-mveliso.
I. Utshintsho olukhulu kumgangatho omtsha: ukuphuculwa komgangatho kunye nokuveliswa kwezinto ezintsha kwinkqubo
Ukuphunyezwa komgangatho we-GB 1499.2-2024 kuzise utshintsho oluninzi olubalulekileyo, oluyilelwe ukuphucula umgangatho weemveliso ze-rebar kunye nokwenza imigangatho ye-rebar yaseTshayina ihambelane nemigangatho yamazwe ngamazwe. Ezi zilandelayo ziinguqu ezine ezibalulekileyo:

1. Lo mgangatho mtsha uqinisa kakhulu imida yokunyamezela ubunzima be-rebar. Ngokukodwa, ukuphambuka okuvumelekileyo kwe-rebar enobubanzi obuyi-6-12 mm yi-±5.5%, i-14-20 mm yi-+4.5%, kwaye i-22-50 mm yi-+3.5%. Olu tshintsho luya kuchaphazela ngokuthe ngqo ukuchaneka kwemveliso ye-rebar, nto leyo efuna abavelisi ukuba baphucule umgangatho weenkqubo zemveliso kunye nokukwazi ukulawula umgangatho.
2. Kwimigangatho ye-rebar enamandla aphezulu afanaHRB500E, I-HRBF600Ekunye ne-HRB600, umgangatho omtsha uyalela ukusetyenziswa kwenkqubo yokucoca iiladle. Le mfuneko iya kuphucula kakhulu umgangatho kunye nokuzinza kokusebenza kwezi zinamandla aphezulu.imivalo yentsimbi, kwaye ikhuthaze ngakumbi eli shishini ukuya kwicala lophuhliso lwentsimbi enamandla aphezulu.
3. Kwiimeko ezithile zesicelo, umgangatho omtsha uzisa iimfuno zokusebenza kokudinwa. Olu tshintsho luya kuphucula ubomi benkonzo kunye nokhuseleko lwee-rebar phantsi kwemithwalo enamandla, ingakumbi kwiibhulorho, izakhiwo eziphakamileyo kunye nezinye iiprojekthi ezineemfuno eziphezulu zokusebenza kokudinwa.
4. Iindlela zokuvavanya ezisemgangathweni kunye neenkqubo zokuvavanya, kubandakanya ukongezwa kovavanyo lokugoba olubuyela umva lwe-"E" grade rebar. Olu tshintsho luya kuphucula ukuchaneka kunye nokuthembeka kovavanyo lomgangatho, kodwa lunokunyusa neendleko zovavanyo lwabavelisi.
Okwesibini, impembelelo kwiindleko zemveliso
Ukuphunyezwa komgangatho omtsha kuya kuba luncedo kwintloko yamashishini emveliso yemisonto ukuphucula umgangatho wemveliso, ukwandisa ukhuphiswano lwemarike, kodwa kuzise neendleko zemveliso ezingaphantsi: ngokophando, intloko yamashishini emveliso yentsimbi ngokuhambelana neendleko zemveliso yemveliso esemgangathweni entsha iya kunyuka malunga ne-20 yuan / ton.
Okwesithathu, impembelelo yemarike

Lo mgangatho mtsha uza kukhuthaza uphuhliso nokusetyenziswa kweemveliso zentsimbi enamandla aphezulu. Umzekelo, iibha zentsimbi ye-seismic enamandla aphezulu angama-650 MPa zinokufumana ingqwalasela engakumbi. Olu tshintsho luya kukhokelela kutshintsho kumxube wemveliso kunye nemfuno yemarike, nto leyo enokuxhasa ezo mizi-mveliso zentsimbi ezinokuvelisa izinto eziphambili.
Njengoko imigangatho iphakanyiswa, imfuno yemarike ye-rebar esemgangathweni ophezulu iya kwanda. Izixhobo ezihlangabezana nemigangatho emitsha zinokufuna ixabiso eliphezulu, nto leyo eya kukhuthaza iinkampani ukuba ziphucule umgangatho wemveliso.