Iyo Yakanakisa Simbi Yakashongedzwa Injiniya Yakadzvanywa Kongiri Simbi Strand
Prestressed steel strand itambo yesimbi yakasungwa inoumbwa ne2, 3, 7 kana 19 yakakwirira-yakasimba waya yesimbi, uye yakaitwa kurapwa kwekunetsekana (kudzikamisa kurapwa), inokodzera prestressed kongiri kana zvinangwa zvakafanana.
Hunhu hukuru hwe prestressed simbi tambo isimba rakakura, kuita kwakanaka kwekuzorora, uye kutwasanuka kana kuvhurwa. Iyo yakajairika tensile simba giredhi ndeye 1860 MPa, uye kune simba mamakisi akadai se1720, 1770, 1960, 2000, uye 2100 MPa. Kusimba kwegoho resimbi iyi zvakare kwakanyanya kwazvo.
Iyo yakakwirira-kabhoni simbi waya tsvimbo inotonhora-inodhonzwa muwaya yesimbi mushure mekugadziriswa kwepamusoro, uyezve imwe nhamba yewaya dzesimbi inomonwa kuita tambo zvichienderana nesimbi tambo chimiro, uye zvino inoumbwa kuburikidza nekushushikana-kudzikamisa maitiro. Kuti uwedzere kusimba, tambo yesimbi inogona kuva nesimbi kana isiri-metal plating kana kupfeka, zvakadai se galvanizing, epoxy coating, etc. Kuti uwedzere kusimba kwechisungo nekrete, nzvimbo yacho inogona kunge ine nicks nezvimwe zvakadaro. Iyo yakaumbwa prestressed simbi tambo inopinda mold compression process mushure mekusungwa, chimiro chakaomesesa uye iyo yepamusoro layer yakanyatso kuenderana nekumisa. Kugadzira tambo dzesimbi dzisina kusungirirwa (tambo dzesimbi dzisina kusungwa) shandisa tambo dzesimbi dzakagara dzakasimbiswa, dzakaputirwa negirisi inorwisa-corrosion kana wakisi yeparafini, wozoputirwa nepamusoro-density polyethylene (HDPE).
Mechanical properties
| Dn/mm | Kusimba simba Rm/MPa | Simba guru resimbi yese strandFm/KN | Yakatsanangurwa isiri-proportional yekuwedzera simba FP0.2/KN | Maximum simba rese rekuwedzera (L0≥500 mm) Agt/% | Stress kuzorora kuita | Executive mwero | |
| Mutoro wekutanga wakaenzana nechiyero chepamusoro chezita /% | Stress kuzorora mwero mushure me1000hr/% | ||||||
| 15.2 | ≥1860 | ≥260 | ≥234 | ≥3.5 | 70 | ≤2.5 | GB/T5224-2014 |
| 80 | ≤4.5 | ||||||
| 15.24 | ≥1860 | ≥260.7 | ≥234.6 | ≥3.5 | 70 | ≤2.5 | ASTMA416-2003 |
Saizi uye kutsauka
| Dn/mm | Kutsauka kunobvumidzwa kwedhayamita/mm | Reference cross-sectional area sn/mm2 |
| 15.20 | +0.40 -0.20 | 140 |
| 15.24 | +0.65 -0.15 | 140 |
Details Ratidza
