I-Rebar: ISikelethoni seNsimbi seZakhiwo

Kulwakhiwo lwangoku, i-rebar yeyona nto iphambili, idlala indima ebaluleke kakhulu kuyo yonke into ukusuka kwizakhiwo eziphakamileyo ukuya kwiindlela ezijikajikajikayo. Iimpawu zayo ezikhethekileyo zomzimba zenza ukuba ibe yinto ephambili ekuqinisekiseni ukhuseleko lwesakhiwo kunye nokuqina.

I-Rebar, igama eliqhelekileyo leentsimbi zentsimbi eziqengqelekayo ezishushu, lifumana igama lalo kumphezulu wembambo. Icandelwana layo elinqamlezayo liqhelekile ukuba lisetyhula, lineembambo ezimbini ezinde kunye neendawo ezinqamlezileyo ezinqamlezileyo ngobude bayo. Iimbambo ezinqamlezileyo zimile okwe-crescent kwaye azidibanisi neembambo zelongitudinal. Oku kuthungwa komphezulu okhethekileyo akuqinisekisi kuphela iqhina phakathi kwe-rebar kunye nekhonkrithi kodwa ikwanyusa kakhulu amandla ayo okuqina kunye nokuzinza ngokubanzi kwizakhiwo zokwakha. I-Rebar ngokuqhelekileyo yenziwe ngentsimbi ye-carbon structural okanye i-low-alloy structural steel kwaye iza kuluhlu olubanzi lweedayamitha, ukusuka kwi-6 mm ukuya kwi-50 mm, ukuze ihambelane neemfuno ezahlukeneyo zokwakha.

I-Rebar ineepropathi zoomatshini eziphezulu, isebenzisa ngokupheleleyo iipropathi zentsimbi ngexesha loxinzelelo, iyenza ibe phezulu kune rebar eqhelekileyo. Umphezulu wayo uphathwa ukwenza umaleko oshinyeneyo we-oxide, obonelela ngokumelana nokubola kunye nokwandisa ubomi bayo benkonzo. Isenokusikwa ngokulula ukuya kubude obunqwenelekayo ngoomatshini, ukuququzelela imisebenzi yokwakha.

I-Rebar ihlelwe ngeendlela ezahlukeneyo. Ngokomgangatho waseTshayina (i-GB1499), i-rebar ihlukaniswe ngamabakala amathathu ngokusekelwe kumandla (inqanaba lesivuno / amandla okuqina): I-HRB335, inamandla angama-335 MPa, afanelekileyo kwizakhiwo zokwakha ngokubanzi; I-HRB400, enegunya le-MPa ye-400, efanelekileyo kwizakhiwo ezithwele imithwalo emikhulu; kunye ne-HRB500, enamandla e-MPa engama-500, enika amandla anqabileyo aphezulu kunye nokuqina, ezifanelekileyo kwiiprojekthi zobunjineli ezikhethekileyo. I-Rebar inokwahlulwa ibe ngamabakala ashushu-aqengqelekayo kunye nabandayo ngokusekwe kwindlela yokuvelisa. I-rebar eqengqelekayo eshushu iveliswa ngokuqhubekekayo okanye kwishiti yentsimbi eqengqelekisiweyo, enika iingenelo ezinje ngokuqina okuphezulu, i-ductility elungileyo, kunye nokuncamathela okugqwesileyo kwikhonkrithi. I-rebar epholileyo, kwelinye icala, iveliswa kwi-coil-rolled-rolled, i-pickled ukususa isikali, kwaye emva koko i-cold-rolled. Ikwabonisa amandla aphezulu, i-ductility elungileyo, kunye namandla ebhondi eyomeleleyo ngekhonkrithi. Ngokusetyenziswa, inokwahlulwa ibe yi-rebar eqhelekileyo yekonkrithi eyomeleziweyo kunye ne-rebar ephethwe ngubushushu kwikhonkrithi egxininisiweyo.

I-Rebar isetyenziswa kwiindawo ezahlukeneyo zokwakha kunye nobunjineli. Kwizakhiwo zokwakha, ngokuqhelekileyo kusetyenziselwa ukuqinisa kunye nokudibanisa imiqadi, iikholomu, ii-slabs, kunye nezinye izinto kwizakhiwo zekhonkrithi eziqinisiweyo, ukuphucula ukuzinza kwabo kunye nomthwalo wokuthwala umthwalo. Kubunjineli boluntu, isebenza njengento yokomeleza kunye nokudibanisa kwiibhulorho, iitonela kunye nohola wendlela, ukuphucula ukuzinza kunye nokuchasana kwe-seismic. Kwinjineli kaloliwe, isetyenziselwa ukukhusela nokudibanisa iileyili, ukuqinisekisa ukusebenza kakuhle. Kwimigodi, isetyenziswa rhoqo njengento yokomeleza kunye nenkxaso, ukuxhasa uphahla lwemigodi kunye neendonga. Ikwasetyenziselwa ukuhombisa uyilo ukwenza izinto zokuhombisa ezifana nezandla, iileyili, kunye nezinyuko, ukudibanisa ubuhle kunye nokuqina.

Ukuveliswa kweRebar kufuna ukuqinisekisa ukuqhubeka phakathi kwenkqubo nganye. Inkqubo yohlulwe ngokwesiqhelo ibe yintsimbi, ukwenziwa kwentsimbi, kunye nokugqiba. Ubuchwephesha obuphambili bemveliso bubandakanya unyango lobushushu emva kokuqengqeleka, imveliso yentsimbi ecolekileyo, i-slitting and rolling, kunye ne-holeless rolling.

I-Rebar ikwabambe indawo ebalulekileyo kwimarike. Isebenza njengophawu oluphambili lophuhliso loshishino lokwakha, kwaye ukuguquguquka kwexabiso layo kunefuthe elithe ngqo kwiinkampani ezinyukayo nezisezantsi kwikhonkco loshishino lwentsimbi. Kubavelisi bentsimbi, ukunyuka kwamaxabiso e-rebar kuguqulela kwimida yengeniso ephezulu; kwiinkampani zokwakha ezisezantsi kunye nabaphuhlisi bezindlu, ukuguquguquka kwexabiso kuchaphazela ngqo iindleko zokwakha. Ngo-2023, amaxabiso elizwe lam atshintshatshintsha phakathi kwe-3,600 kunye ne-4,500 ye-yuan/toni, enyuka phakathi kuMatshi. Ukususela ekupheleni kuka-Matshi ukuya ekupheleni kukaMeyi, idatha ye-real estate yawa phantsi kolindelo lwemarike. Xa kudityaniswa nokwehla ngokubanzi kwamaxabiso amalahle angaphakathi emva kokuthomalaliswa kwengxaki yamandla aphesheya kweelwandle, amaxabiso e-rebar ehle ngokukhawuleza. NgoNovemba, uthotho lwemigaqo-nkqubo, kubandakanywa nezo zinxulumene neebhondi zikarhulumente zetriliyoni-yuan kunye ne-real estate, zandise kakhulu imvakalelo yentengiso kwaye zakhokelela ekubuyiselweni kwamaxabiso e-rebar. Ngeli xesha, imozulu entle kwimarike esemazantsi ikhokelele kumsebenzi ongxamisekileyo, kodwa imfuno iyonke ihlala yomelele. NgoDisemba, eqhutywa kukunyuka kwamaxabiso ezinto ezikrwada kunye nemigaqo-nkqubo yoqoqosho olukhulu, amaxabiso e-rebar aguquguquka malunga ne-4,100 yuan/toni, afikelela kwi-4,090.3 yuan/toni nge-29 kaDisemba.

I-Rebar, isiseko esiluqilima seeprojekthi zokwakha, ikhanya kwiinkalo ezahlukeneyo ngenxa yeempawu zayo ezizodwa, eziphembelela uphuhliso lweshishini lokwakha. Iza kuqhubeka nokuvela ngenkqubela phambili yezobuchwepheshe kunye nophuhliso lweshishini.