Iimveliso zethu zokuqinisa ezigxininisiweyo zisetyenziswa ekwakhiweni kweebhulorho kuMlambo ili-Ili

Ibhulorho yoMlambo i-Ili yiprojekthi enkulu nenzima yecandelo lokuhamba kuhola wendlela weSizwe we-G218, enobude bubonke obuyi-2360m, eyindawo yentambo enye, uyilo lwemiqolo emibini yebhulorho emfutshane ehlala intambo enkulu ngakumbi.

Oko kwaqaliswa ukwakhiwa kweprojekthi ngo-Agasti ka-2021, iye yatsala umdla woluntu ngokubanzi. Ngobushushu obugqithisileyo obuyi-42.8 °C kunye nobushushu obugqithileyo obuyi-51.0 °C ngonyaka, imozulu ngoku iyafudumala ngexesha elifanelekileyo ukwenzela ukuba abakhi beprojekthi bavelise kwaye bakhe ukuqinisekisa ukuba inokuba ivuleleke kuthutho ngaphandle kwamagingxigingxi ekupheleni konyaka.

Iintambo ezihlala intambo zinobuso obubodwa, umqolo ophindwe kabini ulungelelaniswe kwisahluli esiphakathi, kwaye yonke ibhuloho isebenzisa i-4 × 8 izibini zeentambo ezihlala intambo.

Isithuba sexesha elide kwi-cable-Stayed girder yi-5m, isithuba se-double-row transverse arrangement yi-1.0m, kwaye isithuba esithe nkqo kwinqaba sisi-1.2m.

Indlela ye-anchoring ye-cable-stayed cable kwinqaba ithatha indlela ye-anchorage ye-steel strand cable-stayed cable kwinqaba ngokusebenzisa umbhobho wensimbi odibeneyo (i-saddle cable).

Ulwakhiwo oluphambili kukusebenzisa imibhobho yentsimbi edityanisiweyo edityanisiweyo, kwaye inyanda nganye yeentambo zetsimbi kunye nemibhobho yentsimbi yokucanda ngocingo ihambelana enye nenye ngenqaba yentambo.

I-PE ekhuselayo yecandelo loqhagamshelwano phakathi kwe-strand yentsimbi kunye nombhobho wensimbi we-bundle awufuni ukuxothwa, kwaye kuphela i-steel strand PE kwi-sleeve ye-saddle port iyahluthwa kwaye igalelwe ibhloko yokumelana ne-epoxy mortar ukukhusela i-slip trend. yentsimbi yentsimbi phantsi kwesenzo se-cable force engalinganiyo.

I-cable-stayed cable yenziwe nge-epoxy sprayed steel strand, kwaye ububanzi bentsimbi enye yi-15.2mm. Amandla asemgangathweni we-strand yensimbi yi-fpk = 1860MPa, i-modulus elastic: E = (1.95 ± 0.1) × 105 Mpa, kunye nokusebenza kwentsimbi yentsimbi ihlangabezana neemfuno ezifanelekileyo ze "Filled Epoxy Coated Steel Stranded Cable for Bridges" (JT/T1063-2016).

I-anchor ehlala intambo ithatha inkqubo ye-anchor yeqela elitshintshiweyo, kunye nekhebula elihlala ikhebula, i-anchor, ikhava yokukhusela, i-anchor backing plate high-power bolts and ancillary components are given.

Ukusebenza komkhono wentambo ye-HDPE ehambelanayo, i-anchor assembly, i-saddle ye-cable, i-absorber eyakhelwe ngaphakathi, i-cable attachment kunye ne-anti-corrosion material ye-cable ihlangabezana neemfuno ezifanelekileyo ze-"Filled Epoxy Coated Steel Stranded Cable for Bridges" (JT / T 1063-2016).

Intambo ehlala intambo igxininiswe kwaye igxininiswe kumqadi ophambili, apho ibhloko yeankile echasene nokutyibilika icwangciswe ekupheleni kwesali yentambo kwinqaba, kunye nokutshixa isixhobo sokubambelela esichasene nokutyibilika kufuneka kugqitywe kwibhulorho. -ukwenza inqanaba kangangoko.

Nangona kunjalo, ngokuqwalasela amandla angalinganiyo okuqina kwentambo ehleliyo kwinqanaba lokwakha, inqanaba elithile lokutshixa kufuneka limiselwe ngokungqinelana novavanyo lokusebenza oluchasene nokutyibilika kunye neziphumo zokubala zokubekwa esweni kolwakhiwo lwentambo ehleliyo kumbhobho we-wire slitter on. kwinqaba, ukuze kuthintelwe ukutyibilika okunokwenzeka kwentambo ehleliyo kwisali yenqaba ngenxa yomahluko kumandla entambo.