Mazhinji emadhirezi edu ane mabheji akanaka pamaoko

Kusuma chirongwa

• Kambani yedu inonyanya kupa tambo dzesimbi dzakashongedzwa dzekugadzira mabhiriji ekongiri uye tambo dzekugara dzetambo-dzakagadzika bhiriji shongwe pfupi muchirongwa ichi.
  1. The superstructure yebhiriji guru iri muchimiro cheprestressed concrete variable cross-section box girder, hupamhi hwebhiriji guru 33.5 mamita. Zambuko rekusvika rakagadzirwa mune slats, nehupamhi humwechete hwemamita 12.5, bhiriji rekusvika rinotora 30-mita yakajairika span diki bhokisi girder chimiro. Kune akazara makumi mapfumbamwe nematanhatu emabhokisi madiki magidhi mu30-mita Lile River Bridge, uye huremu hwekusimudza hwebhokisi rimwe chete girder hunosvika zana rematani.

• 2. Tambo-yakagara-tambo yakagadzirwa ne15-91 epoxy yakapfapfaidza simbi tambo ine kaviri-layer HDPE kudzivirira, imwe tambo dhayamitaφ15.2mm, tensile simba fpk = 1860MPa. (standard value)
  3. Mamichanicha emhando dzese dzakadzvanywa simbi dzesimbi dzakashandiswa mupurojekiti dzinoenderana nezvinodiwa zve "Steel Strands for Prestressed Concrete" (GB/T5224-2014) uye EN10138-3:2009, zvimiro zvavo zve-anti-corrosion zvinosangana nezvinodiwa zveASTM. A882/A882M-02a uye ISO 14655:1999. Kuramba kuneta kwetambo-yakagara tambo kunofanirwa kusangana nepamusoro pekunetseka σmax = 0.45fptk, iyo stress amplitude ye200MPa, uye tambo yekupwanya kwewaya ye ≤2% mushure memamiriyoni maviri ematenderedzwa.

Zvigadzirwa zvinobatsira

• 1.Prestressed concrete (PC) tambo dzinowanzoshandiswa pakuvaka matanda ekrete kuti ape simba rekugadzirisa uye kusimbisa.
  2.Idzi tambo dzinowanzogara dzakagadziriswa kana kuti dzakagadziriswa mukati mekrete kuti iwedzere kutakura mutoro uye kuderedza kuputika.
  3.Kushandiswa kwePc strands kunobatsira kuvandudza kushanda kwemaitiro uye kusimba kwekongiri matanda. Prestressed kongiri (PC) tambo dzinowanzo shandiswa mukuvaka kwekongiri matanda kuti ipe simba rekusimba nekusimbisa.