Ukwakhiwa kweBhulorho yoMlambo iLile-UNIVAC

Inkampani yethu ubukhulu becala ibonelela ngemisonto yentsimbi ecinezelekileyo ukulungiselela ukwakhiwa kwangaphambili kweebhulorho zekhonkrithi kunye neentambo zokuhlala kwibhulorho ehlala iinqaba ezimfutshane kule projekthi.

1. I-superstructure yebhulorho ephambili ikwimo ye-concrete ye-concrete eguquguqukayo ye-cross-section girder yebhokisi, ububanzi bebhulorho enkulu yi-33.5 yeemitha. Ibhuloho yokusondela yenzelwe i-slats, kunye nobubanzi obunye beemitha ezili-12.5, ibhuloho yokusondela ithatha i-30-metres ye-span ye-span ye-spall encinci yebhokisi yebhokisi. Kukho i-96 iyonke i-girders yebhokisi encinci kwi-30-metres ye-Lile River Bridge, kwaye ubunzima bokuphakanyiswa kwebhokisi enye yebhokisi malunga neetoni ezili-100.

2. Intambo ehlala intambo yenziwe nge-15-91 epoxy sprayed steel strand kunye ne-double-layer HDPE yokukhusela, i-strand eyodwa ye-diameterφ15.2mm, amandla e-tensile fpk = 1860MPa. (ixabiso eliqhelekileyo)

3. Iimpawu zemishini yazo zonke iintambo zentsimbi ezisetyenziswe kwiprojekthi zihambelana nemimiselo ye "Steel Strands for Prestressed Concrete" (GB/T5224-2014) kunye ne-EN10138-3: 2009, iipropati zabo zokulwa ne-corrosion zihlangabezana neemfuno ze-ASTM. I-A882/A882M-02a kunye ne-ISO 14655:1999. Ukumelana nokukhathala kwentambo ehlala intambo kufuneka ihlangabezane nomda ophezulu woxinzelelo σmax = 0.45fptk, i-amplitude yoxinzelelo lwe-200MPa, kunye nesantya sokuqhawula ucingo ≤2% emva kwemijikelezo yezigidi ezi-2.

I-1.Iintambo zekhonkrithi ezigxininisiweyo (i-PC) zisetyenziswa ngokuqhelekileyo ekwakhiweni kweeplanga zekhonkrithi ukubonelela amandla okuqina kunye nokuqiniswa.

I-2.Le micu idla ngokugqithiswa ngaphambili okanye i-post-tensioned ngaphakathi kwekhonkrithi ukunyusa umthamo womthwalo kunye nokunciphisa ukuqhekeka.

I-3.Ukusetyenziswa kweentambo ze-PC kunceda ukuphucula ukusebenza kwesakhiwo ngokubanzi kunye nokuqina kwemiqadi yekhonkrithi. Iintambo zekhonkrithi ezigxininisiweyo (i-PC) zisetyenziswa ngokuqhelekileyo ekwakhiweni kwemiqadi yekhonkrithi ukubonelela amandla okuqina kunye nokuqiniswa.

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