I. Imininingwane Yobubanzi (Ububanzi Bokusetshenziswa Okuyinhloko) Imininingwane yobubanzi be-HRB400E rebar kumele ihambisane ngokuqinile ne-“Hot-rolled Ribbed Steel Bars for Reinforced Concrete” (GB/T 1499.2-2018). Ububanzi obujwayelekile bobubanzi bungu-6mm-50mm, buhlanganisa izimo eziningi zokucindezeleka kwezobunjiniyela. Ububanzi obuhlukene buhambisana nezidingo ezahlukene zohlelo lokusebenza, kanje: Ububanzi obuncane (6mm-12mm): Kusetshenziswa kakhulu izingxenye ezincane, ama-stirrup, kanye nama-distribution bar, njenge-floor slab distribution bar, ama-wall tie bar, ama-lintel stirrup, njll. Imininingwane evamile ingu-6mm, 8mm, 10mm, kanye no-12mm; Ububanzi obuphakathi (14mm-25mm): Esetshenziswa kakhulu, efanelekela izingxenye ezithwala ukucindezeleka okuyinhloko njengemigoqo yohlaka, amakholomu ohlaka, amalungu onqenqema lodonga olushefayo, kanye nama-pile caps. Imininingwane ejwayelekile ingu-14mm, 16mm, 18mm, 20mm, 22mm, kanye no-25mm; Ububanzi obukhulu (28mm-50mm): Isetshenziswa kakhulu ezakhiweni ezinkulu, izingxenye ezisindayo noma izingxenye ezithwala umthwalo omningi, njengezinsika zohlaka ezinkulu, imishayo emikhulu yebhuloho, amakheji ensimbi ayisisekelo, kanye nokuqinisa isisekelo semishini emikhulu. Imininingwane evamile ingu-28mm, 32mm, 36mm, 40mm kanye no-50mm. II. Ubukhulu Bangaphandle Namapharamitha Embambo (Izidingo Ezidingekayo)
I-rebar ye-HRB400E inesigaba esijikelezayo esinezimbambo ubude bayo. Izimbambo zihlukaniswe ngezimbambo ezinde (ezihambisana ne-axis ye-rebar) kanye nezimbambo eziphambeneyo (nge-engeli ethile ne-axis). Amapharamitha kumele ahlangabezane nezidingo ezilandelayo ukuqinisekisa ukubopha nokusebenza kahle kwe-concrete:
Umklamo Wezimbambo Eziguquguqukayo:
I-engela: I-engela β ephakathi kombambo ophambeneyo kanye ne-rebar axis kumele ibe phakathi kuka-45° no-60°. Uma ububanzi be-rebar bungu-d ≤ 12mm, i-engela ingandiswa ngokufanele ibe ngu-30°.
Isikhala: Isikhala sembambo evundlile l kumele sivumelane nobubanzi. Isibonelo, l ≤ 12mm uma d = 6mm, l ≤ 20mm uma d = 25mm, kanye l ≤ 25mm uma d = 50mm. Ukuphambuka kwesikhala sembambo evundlile se-rebar efanayo akumele kudlule ±10%.
Ukuphakama: Ukuphakama kombambo ophambeneyo h kumele kuhlangabezane nezidingo zamandla kanye nokubopha. Isibonelo, h ≥ 0.8mm uma d = 10mm, kanye h ≥ 0.8mm uma d = 20mm. Uma h ≥ 1.5mm, kanye d = 40mm, h ≥ 2.4mm, kanye nokuphakama kwangempela okulinganisiwe akumele kube ngaphansi kuka-90% wenani elijwayelekile. Umklamo Wombambo Ode: Ubuningi: I-rebar ngayinye idinga izimbambo ezinde ezi-2 ezisatshalaliswa ngokulinganayo. Ububanzi b bombambo ode kufanele bufane nobubanzi, isib. b = 2.0mm uma d = 16mm, b = 3.0mm uma d = 32mm; Ubude: Umbambo ode kumele ugijime ubude bonke be-rebar ngaphandle kwezikhala noma ukuphazamiseka okuyingxenye, futhi ingxenye ephezulu yombambo ode kumele ishintshele kahle phezulu kombambo ophambeneyo ukuze kugwenywe ukugxilisa ingqondo okubangelwa imiphetho ebukhali. Ukuphambuka Kwesigaba: Ukuphambuka kwangempela kobubanzi be-rebar kumele kube ngaphakathi kuka-±0.4mm (isb., kwi-rebar enobubanzi obujwayelekile obungu-20mm, ububanzi bangempela obulinganisiwe kumele bube phakathi kuka-19.6mm no-20.4mm); Ukuphambuka komjikelezo wesigaba akumele kudlule u-±2%, kanye ne-ellipticity (umehluko phakathi kobubanzi obukhulu nobuncane besigaba) kumele kube ngu-≤0.4mm ukuqinisekisa ukuma kwesigaba okuvamile kanye nokusatshalaliswa kokucindezeleka okufanayo.
Isikhathi sokuthunyelwe: Novemba-19-2025