Ukuthuthukiswa kwama-PC Strands kanye ne-Prestressed steel products anchorage systems

Imikhiqizo yensimbi ene-Prespressed yenze intuthuko enkulu kusukela ngo-1950 wekhulu leminyaka elidlule, kunamaphuzu amabili ayinhloko ekuthuthukisweni kwayo. Okokuqala, amandla ezinto ezibonakalayo akhula kancane kancane, ukuze kuncishiswe usayizi nesisindo sezingxenye ezicindezelekile, kuze kwehle nezindleko zephrojekthi; Okwesibili, ngesisekelo sokuthuthukisa amandla, kufanele sinake ukuthuthukiswa kwezinto ezinokusebenza okuphezulu kwe-anti-corrosion, ukuze kuthuthukiswe ukuqina kwezingxenye zensimbi ezicindezelwe futhi zilondoloze izindleko zokulondoloza.

Ngokuphathelene nezintambo zensimbi eziqine kakhulu nezinesisindo esincane, inqubo yazo yokuthuthukisa ihlukaniswe yaba izigaba ezine: imicu yensimbi evamile ebushelelezi nengenalutho - imicu yensimbi enamagqabhagqabha nemicu yensimbi engaboshiwe - imicu yensimbi engaboshiwe - imicu yensimbi ye-epoxy. Ezigabeni ezintathu zokuqala zokuthuthuka, iziqeshana zokusebenza kwehange ezifaniswa nentambo yensimbi zicishe zifane; Ukuklanywa kwayo, ukucutshungulwa kanye nokukhiqizwa kwayo sekube ngezinga elikhulu. Isigaba sesine sokuthuthukiswa, okungukuthi, i-epoxy steel strand, okwamanje kunezinhlobo ezintathu ze-epoxy steel strand ezimakethe zamazwe ngamazwe nezasekhaya. Enye intambo eyodwa yocingo oluncane oluncane lwe-epoxy steel strand, okungukuthi, izintambo eziyisikhombisa zensimbi emucu wensimbi zimbozwe nge-epoxy coating ngokuhlukana, futhi ukujiya kokumboza kuncane (cishe 0.1 ~ 0.2mm); Eyesibili intambo yensimbi eboshwe nge-epoxy, okungukuthi, ungqimba lwangaphandle lwentambo yensimbi lumbozwe nge-epoxy coating, futhi akukho resin ye-epoxy egcwalisa igebe phakathi kwezintambo zensimbi, futhi ukushuba kwe-epoxy yangaphandle enamathela. (cishe 0.65 ~ 1.15mm); Okwesithathu umucu wensimbi ogcwele i-epoxy coated, ogcwaliswa nge-epoxy resin ongqimbeni olungaphandle kanye negebe, futhi uwukuphela kwentambo yensimbi ye-epoxy ehlangabezana nazo zombili izindinganiso ze-ASTM A882/A882M-04a kanye ne-ISO14655:1999.

Uhlelo lwe-anchorage olucindezelwe luthuthukiswa kancane kancane ngokuthuthukiswa kwensimbi ene-prestressed, zombili azihlukaniseki. Ngokuvuthwa kancane kancane kobuchwepheshe be-filler epoxy coated steel strand, uhlelo lwayo lokunamathisela luye lwathuthukiswa kancane kancane futhi lwathuthukiswa. Okubili kuyasebenzisana, futhi kusetshenziswe kumaphrojekthi amaningi wokwakha amabhuloho othelawayeka njengamabhuloho ahlala ngekhebula, amabhuloho ahlala ngekhebula ngokwengxenye, ukucindezela kwangaphandle, izinti zokubopha ibhuloho lama-arch kanye namatshe anyakazayo.

I-Univac New Material Tech.Manufacturing Co., Ltd. ingumkhiqizi ochwepheshe kanye nomsabalalisi wezintambo zensimbi ezinamandla kakhulu nezinethezeka kancane, izintambo zensimbi ezicindezelwe ngaphambili, imicu yensimbi eshisayo ediphu, izintambo zensimbi ezingaboshiwe, imicu yensimbi eboshwe nge-epoxy kanye izinhlelo zabo zokubambelela ezisekelayo, ikhwalithi yemikhiqizo yensimbi ene-prestressed ihlangabezana ngokugcwele nezindinganiso zamazwe ngamazwe BS 5896:2012, FprEN 10138:2009, ASTM A416/416M:2012, ISO 14655:1999 "Izidingo ze-Epoxy Coated Steel Grain Wire for Prestress" ye-American standard ASTM A882/A882M-04a "Ukucaciswa Okujwayelekile Kwemicu Yensimbi Egcwele I-Epoxy Coated Seven Wire Prestressed Steel Strands"; Uhlelo lokunamathisela lenze ngempumelelo uhlelo lwekhebula elihlala ikhebula, uhlelo oluhlala ikhebula kwamanye amabhuloho ahlala ngekhebula, isistimu yokucindezela yangaphandle, uhlelo lwe-arch bridge tie kanye ne-geotechnical anchorage system, esetshenziswe kumaphrojekthi amaningi.