I. Litlhaloso tsa Bophara (Sebaka se Seholo sa Tšebeliso) Litlhaloso tsa bophara ba HRB400E rebar li tlameha ho latela ka tieo "Libara tsa Tšepe tse Ribbed tse Chesitsoeng ka Mocheso bakeng sa Konkreite e Matlafalitsoeng" (GB/T 1499.2-2018). Sebaka se tloaelehileng sa bophara ke 6mm-50mm, se akaretsang maemo a mangata a khatello boenjiniere. Bophara bo fapaneng bo tsamaisana le litlhoko tse fapaneng tsa ts'ebeliso, ka tsela e latelang: Bophara bo bonyenyane (6mm-12mm): E sebelisoa haholo bakeng sa likarolo tse nyane, li-stirrup le li-distribution, joalo ka libara tsa kabo ea slab ea fatše, libara tsa lebota, li-stirrup tsa lintel, jj. Litlhaloso tse tloaelehileng ke 6mm, 8mm, 10mm, le 12mm; Bophara bo mahareng (14mm-25mm): E sebelisoang haholo, e loketse likarolo tse jarang khatello ea mantlha joalo ka libalaka tsa foreimi, likholomo tsa foreimi, litho tsa moeli oa lebota le li-pile caps. Litlhaloso tse tloaelehileng ke 14mm, 16mm, 18mm, 20mm, 22mm, le 25mm; Bophara bo boholo (28mm-50mm): E sebelisoa haholo-holo meahong e meholo, likarolo tse boima kapa likarolo tse nang le moroalo o moholo, joalo ka likholomo tsa foreimi tse kholo, maballo a maholo a borokho, lihoko tsa tšepe tsa motheo oa liqubu, le matlafatso a motheo a lisebelisoa tse kholo. Litlhaloso tse tloaelehileng ke 28mm, 32mm, 36mm, 40mm le 50mm. II. Litekanyo tsa Kantle le Liparamitha tsa Rib (Litlhoko tse Tlamang)
Rebar ea HRB400E e na le karolo e chitja e tšekaletseng e nang le likhopo tse bolelele ba eona. Likhopo li arotsoe ka likhopo tse telele (tse tsamaellanang le axis ea rebar) le likhopo tse tšekaletseng (ka sekhutlo se itseng ho ea ho axis). Liparamente li tlameha ho fihlela litlhoko tse latelang ho netefatsa hore ho tlamahana le ts'ebetso ea ho tiisa ka konkreite:
Moralo oa Likhopo tse Fetohang:
Sekhutlo: Sekhutlo sa β se pakeng tsa khopo e tshekaletseng le mothapo wa rebar se lokela ho ba pakeng tsa 45° le 60°. Ha bophara ba rebar bo le d ≤ 12mm, sekhutlo se ka atolosoa ka nepo ho fihlela ho 30°.
Sebaka: Sebaka sa likhopo tse tšekaletseng l se tlameha ho fetoloa ho ea ka bophara. Mohlala, l ≤ 12mm ha d = 6mm, l ≤ 20mm ha d = 25mm, le l ≤ 25mm ha d = 50mm. Ho kheloha ha sebaka sa likhopo tse tšekaletseng bakeng sa rebar e tšoanang ha hoa lokela ho feta ±10%.
Bophahamo: Bophahamo ba lehare le tshekaletseng h bo tlameha ho fihlela ditlhoko tsa matla le ho tlamahana. Mohlala, h ≥ 0.8mm ha d = 10mm, le h ≥ 0.8mm ha d = 20mm. Ha h ≥ 1.5mm, le d = 40mm, h ≥ 2.4mm, mme bophahamo ba nnete bo lekantsweng ha bo a lokela ho ba ka tlase ho 90% ya boleng bo tlwaelehileng. Moralo wa Lehare le Lelelele: Bongata: Rebar ka nngwe e hloka lehare le lelelele le arotsweng ka ho lekana. Bophara b ba lehare le lelelele bo lokela ho tshwana le bophara, mohlala, b = 2.0mm ha d = 16mm, b = 3.0mm ha d = 32mm; Bolelele: Lehare le lelelele le tlameha ho matha bolelele bohle ba rebar ntle le dikgeo kapa ditshitiso tse itseng, mme karolo e ka hodimo ya lehare le lelelele e tlameha ho fetela ka thelelo ho leba hodimo ho lehare le tshekaletseng ho qoba kgatello e bakwang ke mathoko a bohale. Phapang ea Karolo: Phapang ea 'nete ea bophara ba rebar e tlameha ho ba ka hare ho ± 0.4mm (mohlala, bakeng sa rebar e nang le bophara bo tloaelehileng ba 20mm, bophara ba 'nete bo lekantsoeng e tlameha ho ba pakeng tsa 19.6mm le 20.4mm); Phapang ea perimeter ea karolo ha ea lokela ho feta ± 2%, 'me ellipticity (phapang pakeng tsa bophara bo boholo le bo bonyane ba karolo) e tlameha ho ba ≤0.4mm ho netefatsa sebopeho se tloaelehileng sa karolo le kabo e ts'oanang ea khatello.
Nako ea poso: Pulungoana-19-2025