Mukuvaka kwemazuva ano, rebar isimbi yechokwadi, ichiita basa rinokosha mune zvese kubva kune skyscrapers kusvika kune inomonereka nzira. Hunhu hwayo hwakasiyana hwemuviri hunoita kuti ive chinhu chakakosha mukuona kuchengetedzwa kwekuvaka uye kusimba.
Rebar, iro zita rinowanzozivikanwa remasimbi anopisa-akatenderedzwa nesimbi, rinotora zita raro kubva kune ribbed pamusoro. Chikamu chayo chemuchinjiko chinowanzoita denderedzwa, chine mbabvu mbiri dzakareba uye mbabvu dzakapatsanurwa zvakaenzana pakureba kwayo. Mbabvu dzakachinjika dzakaita secrescent uye hadzipesani nembabvu dzakareba. Ichi chakasarudzika chepamusoro mameseji hachingosimbisa chisungo pakati peiyo rebar nekongiri asi zvakare inosimudzira zvakanyanya kusimba kwayo uye kugadzikana kwese muzvivakwa zvekuvaka. Rebar inowanzo gadzirwa kubva kucarbon structural simbi kana yakaderera-alloy simbi yekuvaka uye inouya muhupamhi hwemadhayamita, kubva pa6 mm kusvika pa50 mm, kuti ikwane zvakasiyana zvinodiwa zvekuvaka.
Rebar ine epamusoro mechanicha zvivakwa, ichishandisa zvizere simbi yemakanika zvivakwa panguva yekunetsana, ichiita kuti ive yepamusoro kune yakajairwa rebar. Nzvimbo yaro inobatwa kuti iite gobvu oxide layer, iyo inopa kusagadzikana kwecorrosion uye inowedzera hupenyu hwayo hwesevhisi. Inogona zvakare kuchekwa nyore kune hurefu hunodiwa kuburikidza nekugadzira, kufambisa mabasa ekuvaka.
Rebar yakakamurwa nenzira dzakasiyana. Zvinoenderana neChinese chiyero (GB1499), rebar yakakamurwa kuita mamakisi matatu zvichienderana nesimba (goho point / tensile simba): HRB335, ine simba re335 MPa, yakakodzera kune zvakajairwa zvivakwa zvekuvaka; HRB400, ine simba re400 MPa, inokodzera zvimiro zvinotakura mitoro mikuru; uye HRB500, ine simba re500 MPa, inopa yakasarudzika yakakwira tensile uye torsional simba, yakakodzera kune nyanzvi dzeinjiniya mapurojekiti. Rebar inogona kukamurwa kuita inopisa-yakatenderedzwa uye inotonhora-yakatenderedzwa mamakisi zvichibva pane yayo nzira yekugadzira. Kupisa-yakakungurutswa rebar inogadzirwa kubva kunoramba ichikandwa kana kutanga yakakungurutswa simbi mashizha, ichipa zvakanakira senge simba rakakwirira, yakanaka ductility, uye kunamira kwakanakisa kune kongiri. Cold-rolled rebar, kune rumwe rutivi, inogadzirwa kubva kune inopisa-yakakungurutswa coils, yakanyungudutswa kubvisa chiyero, uyezve inotonhora-yakakungurutswa. Iyo inoratidzawo simba rakakwirira, yakanaka ductility, uye yakasimba bond simba nekongiri. Nekushandisa, inogona kukamurwa kuita yakajairwa rebar kune yakasimbiswa kongiri uye inopisa-yakagadziriswa rebar ye prestressed kongiri.
Rebar inoshandiswa mune dzakasiyana siyana kuvaka uye engineering minda. Mukuvaka zvivakwa, inowanzoshandiswa kusimbisa uye kubatanidza matanda, makoramu, slabs, uye zvimwe zvikamu muakasimbiswa kongiri zvivakwa, kuwedzera kugadzikana kwavo uye kutakura mutoro. Muinjiniya yehurumende, inoshanda sekusimbisa uye yekubatanidza zvinhu mumabhiriji, tunnels, uye migwagwa mikuru, inovandudza kugadzikana kwavo uye seismic kuramba. Muinjiniya yechitima, inoshandiswa kuchengetedza nekubatanidza njanji, kuve nechokwadi chekushanda kwakanaka. Mumigodhi, inowanzoshandiswa sekusimbisa uye kutsigira zvinhu, kutsigira matenga emigodhi nemadziro. Inotoshandiswa mukushongedza kwekuvaka kugadzira zvinhu zvekushongedza zvakaita semaoko, njanji, uye masitepisi, achibatanidza aesthetics nekusimba.
Kugadzirwa kweRebar kunoda kuve nechokwadi chekuenderera pakati pega rega maitiro. Maitiro acho anowanzo kukamurwa kuita ironmaking, main steelmaking, uye kupedzisa. Makiyi ekugadzira matekinoroji anosanganisira post-kukungurutsa kupisa kurapwa, yakanaka-grained simbi kugadzirwa, kutsemura nekukunguruka, uye isina gomba kukunguruka.
Rebar zvakare inobata chinzvimbo chakakosha mumusika. Inoshanda sechiratidzo chakakosha chekusimudzira kweindasitiri yekuvaka, uye kushanduka kwayo kwemitengo kune kukanganisa kwakananga kumakambani ari kumusoro nekudzika mumaketani eindasitiri yesimbi. Kune vanogadzira simbi, kukwira kwemitengo yerebar kunoshandura kune yakakwira purofiti margin; kumakambani ekuvaka akadzika uye vanogadzira zvivakwa, kushanduka kwemitengo kunokanganisa mutengo wekuvaka. Muna 2023, mitengo yenyika yangu yakachinja pakati pe3,600 ne4,500 yuan/ton, ichikwira pakati paKurume. Kubva pakupera kwaKurume kusvika pakupera kwaMay, real estate data yakadonha pane zvaitarisirwa pamusika. Zvichienderana nekudzikira kwakawanda kwemitengo yemarasha epamba zvichitevera kudzikira kwedambudziko remagetsi mhiri kwemakungwa, mitengo yerebar yakaderera nekukurumidza. MunaNovember, nhevedzano yemitemo, kusanganisira iyo ine hukama netrillion-yuan hurumende zvisungo uye zvivakwa, zvakawedzera zvakanyanya manzwiro emusika uye zvakakonzera kudzoreredzwa kwemitengo. Zvichakadaro, mamiriro ekunze akanaka mumusika wekumaodzanyemba akatungamira kune rimwe basa rekumhanyisa, asi kudiwa kwese kunoramba kwakasimba. Muna Zvita, zvichisundwa nekukwira kwemitengo yezvigadzirwa uye macroeconomic marongero, mitengo yerebar yakawedzera kutenderera 4,100 yuan/tani, inosvika 4,090.3 yuan/tani musi wa29 Zvita.
Rebar, hwaro hwakasimba hwezvirongwa zvekuvaka, inopenya munzvimbo dzakasiyana siyana nekuda kwehunhu hwayo hwakasiyana, ichipesvedzera kusimukira kweindasitiri yekuvaka. Icharamba ichishanduka nekufambira mberi kwetekinoroji uye kuvandudzwa kwemaindasitiri.
Nguva yekutumira: Aug-18-2025