I-Best Steel Prestressed Engineering I-Prestressed Concrete Steel Strand
Intambo yensimbi ene-Prestressed intambo yensimbi eboshiwe ehlanganiswe izintambo zensimbi eziqinile ezingu-2, 3, 7 noma 19, futhi iye yathola ukwelashwa kokunciphisa ukucindezeleka (ukwelashwa kokuzinzisa), elungele ukhonkolo ocindezelwe ngaphambili noma izinjongo ezifanayo.
Izici eziyinhloko zemicu yensimbi ene-prestressed zingamandla aphezulu, ukusebenza kahle kokukhululeka, futhi ziqondile uma zembuleka. Ibanga elivamile lamandla e-tensile ngu-1860 MPa, futhi kukhona amamaki wamandla afana no-1720, 1770, 1960, 2000, kanye no-2100 MPa. Amandla okukhiqiza ale nsimbi nawo aphezulu kakhulu.
Intambo yensimbi enekhabhoni ephezulu idonswa kubanda ocingweni lwensimbi ngemva kokwelashwa kwendawo, bese kuthi inombolo ethile yezintambo zensimbi iphonswe ibe imicu ngokuya ngesakhiwo somucu wensimbi, bese kwakheka ngenqubo yokuqinisa ekhulula ukucindezeleka. Ukuze kunwetshwe ukuqina, ucingo lwensimbi lungaba nensimbi noma i-non-metal plating noma i-coating, njenge-galvanizing, i-epoxy coating, njll. Ukuze ukwandise amandla esibopho ngokhonkolo, indawo engaphezulu ingaba nama-nick nokunye. I-strand yensimbi ebunjiwe ye-prestressed ingena inqubo yokucindezela isikhunta ngemva kokubopha, isakhiwo siminyene futhi ungqimba olungaphezulu lufaneleka kakhulu ukubambelela. Ukuze wenze imicu yensimbi engaboshiwe (imicu yensimbi engaboshiwe) sebenzisa imicu yensimbi egcizelelwe ngaphambili, egcotshwe ngamafutha avimbela ukugqwala noma i-wax kapharafini, bese isongwe nge-high-density polyethylene (HDPE).
Izakhiwo zemishini
| Dn/mm | Amandla aqinile Rm/MPa | Amandla amakhulu ayo yonke i-strandFm/KN yensimbi | Amandla okunweba ashiwo angalingani FP0.2/KN | Isandiso esiphezulu samandla (L0≥500 mm) Agt/% | Ukusebenza kokuphumula kwengcindezi | Izinga eliphezulu | |
| Umthwalo wokuqala ulingana nephesenti eliphezulu le-nominal/% | Izinga lokuphumula lokucindezeleka ngemva kuka-1000hr/% | ||||||
| 15.2 | ≥1860 | ≥260 | ≥234 | ≥3.5 | 70 | ≤2.5 | I-GB/T5224-2014 |
| 80 | ≤4.5 | ||||||
| 15.24 | ≥1860 | ≥260.7 | ≥234.6 | ≥3.5 | 70 | ≤2.5 | I-ASTMA416-2003 |
Usayizi nokuchezuka
| Dn/mm | Ukuchezuka okuvunyelwe kobubanzi/mm | Indawo eyisithenjwa enqamula izingxenye sn/mm2 |
| 15.20 | +0,40 -0.20 | 140 |
| 15.24 | +0,65 -0.15 | 140 |
Imininingwane Bonisa
