I. Iinkcukacha zobubanzi (Uluhlu oluPhambili lweSicelo) Iinkcukacha zobubanzi be-HRB400E rebar kufuneka zihambelane ngokungqongqo ne-"Hot-rolled Ribbed Steel Bars for Reinforced Concrete" (GB/T 1499.2-2018). Uluhlu lobubanzi oluqhelekileyo yi-6mm-50mm, lugubungela uninzi lweemeko zoxinzelelo kubunjineli. Iidayamitha ezahlukeneyo zihambelana neemfuno ezahlukeneyo zesicelo, ngolu hlobo lulandelayo: Ububanzi obuncinci (6mm-12mm): Isetyenziswa kakhulu kwiindawo ezincinci, iistirrups, kunye neebha zokusasaza, ezifana neebha zokusasaza zeslab yomgangatho, iibha zokubopha eludongeni, iistirrups zelintel, njl. Iinkcukacha eziqhelekileyo yi-6mm, 8mm, 10mm, kunye ne-12mm; Ububanzi obuphakathi (14mm-25mm): Eyona isetyenziswa kakhulu, ifanelekile kwiindawo ezithwala uxinzelelo oluphambili ezifana neebhari zesakhelo, iikholamu zesakhelo, amalungu omphetho wodonga olusheyiweyo, kunye nee-pile caps. Iinkcukacha eziphambili yi-14mm, 16mm, 18mm, 20mm, 22mm, kunye ne-25mm; Ububanzi obukhulu (28mm-50mm): Isetyenziswa kakhulu kwizakhiwo ezinkulu, izinto ezinzima okanye iindawo ezinomthwalo omninzi, njengeentsika ezinkulu zesakhelo, imiqadi ephambili yebhulorho, iikheji zentsimbi zesiseko seenqwaba, kunye nokuqinisa isiseko sezixhobo ezinkulu. Iinkcukacha eziqhelekileyo ziyi-28mm, 32mm, 36mm, 40mm kunye ne-50mm. II. Ubukhulu bangaphandle kunye neeParameters zeRib (Iimfuno ezinyanzelekileyo)
I-rebar ye-HRB400E ine-cross-section ejikelezayo ene-ribs kubude bayo. Iimbambo zahlulwe zaba yi-longitudinal ribs (ezihambelana ne-rebar axis) kunye ne-transverse ribs (kwi-engile ethile kwi-axis). Iiparameter kufuneka zihlangabezane neemfuno ezilandelayo ukuqinisekisa ukubopha kunye nokusebenza kwe-anchorage ngesamente:
Uyilo lweembambo ezinqamlezileyo:
I-engile: I-engile β phakathi kwe-transverse rib kunye ne-rebar axis kufuneka ibe phakathi kwe-45° kunye ne-60°. Xa ububanzi be-rebar buyi-d ≤ 12mm, i-engile ingandiswa ngokufanelekileyo ukuya kwi-30°.
Isithuba: Isithuba seembambo ezinqamlezileyo l kufuneka silungelelaniswe nobubanzi. Umzekelo, l ≤ 12mm xa d = 6mm, l ≤ 20mm xa d = 25mm, kunye l ≤ 25mm xa d = 50mm. Ukuphambuka kwesithuba seembambo ezinqamlezileyo kwi-rebar efanayo akufuneki kudlule ±10%.
Ukuphakama: Ukuphakama kwembambo enqamlezileyo u-h kufuneka kuhlangabezane neemfuno zamandla kunye nokubopha. Umzekelo, u-h ≥ 0.8mm xa u-d = 10mm, kunye no-h ≥ 0.8mm xa u-d = 20mm. Xa u-h ≥ 1.5mm, kunye no-d = 40mm, u-h ≥ 2.4mm, kwaye ukuphakama okulinganisiweyo akufuneki kube ngaphantsi kwe-90% yexabiso eliqhelekileyo. Uyilo lwembambo ende: Ubungakanani: I-rebar nganye ifuna iimbambo ezinde ezisasazwe ngokulinganayo ezi-2. Ububanzi u-b bembambo ende kufuneka buhambelane nobubanzi, umz., b = 2.0mm xa u-d = 16mm, b = 3.0mm xa u-d = 32mm; Ubude: Imbambo ende kufuneka ihambe ubude bonke be-rebar ngaphandle kwezithuba okanye ukuphazamiseka okuncinci, kwaye umphezulu wembambo ende kufuneka utshintshele kakuhle phezulu kwembambo enqamlezileyo ukuze kuthintelwe uxinzelelo olubangelwa yimiphetho ebukhali. Ukuphambuka kweCandelo: Ukuphambuka kokwenyani kobubanzi be-rebar kufuneka kube ngaphakathi kwe-±0.4mm (umz., kwi-rebar enobubanzi obuqhelekileyo be-20mm, ububanzi obulinganisiweyo bokwenyani kufuneka bube phakathi kwe-19.6mm kunye ne-20.4mm); Ukuphambuka komjikelezo wecandelo akufuneki kudlule i-±2%, kwaye i-ellipticity (umahluko phakathi kobubanzi obukhulu kunye nobuncinci becandelo) kufuneka ibe yi-≤0.4mm ukuqinisekisa imo yecandelo eqhelekileyo kunye nokusasazwa koxinzelelo olufanayo.
Ixesha leposi: Novemba-19-2025