Yiziphi izingxenye zesiqalisi se-girder?

Ii-crane ye-gantry yokuqalisaiyithuluzi elibalulekile elisetshenziswa ekwakhiweni kwamabhuloho ukuhlanganisa nokufaka amabhande ebhuloho. Iwumshini okhethekile owenzelwe ukuphakamisa, ukuthutha nokubeka amabhande ebhuloho asindayo endaweni yawo, okwenza kube yingxenye ebalulekile yokwakhiwa kwamabhuloho.

I-girder hoist inezingxenye eziningana ezibalulekile ezisebenzisana ukuqinisekisa ukufakwa okuphephile nokuphumelelayo kwama-bridge girders. Enye yezingxenye eziyinhloko i-main beam, okuyisici esiyinhloko sesakhiwo sesiqalisi. I-main beam inesibopho sokusekela isisindo se-main beam yebhuloho nokunikeza ukuzinza ngesikhathi sokuphakamisa nokwethula.

Esinye isici esibalulekile sesiqalisi se-beam esiyinhloko yikhanda lokuqalisa, elitholakala ngaphambili kwe-beam eyinhloko. Ikhanda lokudlulisela lihlonyiswe ngemishini ekhethekile efana nama-hydraulic jacks namadivayisi okuphakamisa ukuze kuphakanyiswe futhi kubekwe kahle ama-bridge girders. Liphinde libe ne-truss yokuqalisa enikeza ukwesekwa okwengeziwe kanye nokuzinza ngesikhathi sokuqalisa.

Uhlelo lwe-counterweight luyingxenye ebalulekile yesiqalisi se-beam futhi lwenzelwe ukulinganisela isisindo sebhuloho kanye nesiqalisi ngokwaso. Uhlelo luqinisekisa ukuthi isiqalisi sihlala sizinzile futhi siphephile lapho siphakamisa futhi sibeka amabhande, kunciphisa ingozi yezingozi noma ukwehluleka kwesakhiwo.

Ngaphezu kwalokho, isiqalisi se-beam sihlonyiswe ngohlelo lokulawula oluthuthukisiwe oluvumela umqhubi ukuthi aqaphe futhi alungise inqubo yokuphakamisa nokuqalisa. Uhlelo lokulawula luhlanganisa izingxenye ze-hydraulic kanye nekagesi ezivumela ukunyakaza okunembile nokulawulwayo ukuqinisekisa ukufakwa okuphephile nokunembile kwama-bridge girders.

Ngamafuphi, i-girder hoist iyimishini yokwakha ibhuloho eyinkimbinkimbi equkethe izingxenye eziningana ezibalulekile ezisebenzisana ukuphakamisa, ukuthutha nokubeka ama-bridge girders ngesikhathi sokwakhiwa kwebhuloho. Umklamo wayo omusha kanye nobuchwepheshe obuthuthukisiwe kwenza kube ithuluzi elibalulekile kumaphrojekthi okwakha ibhuloho, okwenza kube lula ukufakwa kwama-bridge girders ngempumelelo nangokuphephile.