Upper Structure Assembly Thiab Pushing

Upper Structure Assembly thiab Pushing (Nqa Cantilever Pushing Method as Piv txwv):

Kev Npaj Qhov Chaw Sib Tham: Yuav tsum muaj qhov chaw tiaj tus. Piv txwv li, sib sau ua ke tus choj 54-meter yuav xav tau thaj tsam sib dhos txog li 60 meters hauv qhov ntev thiab 8 meters hauv qhov dav, nrog rau qhov siab hauv av kwv yees li 10 cm siab dua li ntawm abutment los pab txhawb kev thawb-2.

Main Choj Assembly: Sib sau ua ke Bailey beams sequentially los tsim cov truss qauv. High precision yog yuav tsum tau-xws li tuav lub chaw- mus rau -center spacing deviation ntawm lub ntsiab truss rau ib tug hauv qab- txhawb choj nyob rau hauv 2.5 mm-3.

Daim Ntawv Qhia Girder (Nce Ncej) Kev Txhim Kho: Txhim kho cov lus qhia girder nyob rau pem hauv ntej kawg ntawm tus choj loj, tsim kom tau raws li qhov xav tau ntawm lub zog thiab ruaj khov-3-4. Daim ntawv qhia girder yuav tsum ruaj ntseg txuas nrog tus choj loj uas siv cov khoom sib txuas tshwj xeeb.

Pushing Operation: Siv winches lossis excavators rau traction los thawb tus choj rau pem hauv ntej ntawm cov menyuam txhawb nqa. Thoob plaws hauv txoj kev thawb, lateral deviations yuav tsum tau soj ntsuam tas li thiab kho tam sim ntawd kom ntseeg tau tias muaj kev sib raug zoo nrog qhov sib txawv abutment. Tag nrho kev tiv thaiv -overturning stability coefficient kuj yuav tsum tsis pub tsawg dua 1.3-3.

Choj Lowering thiab Fixation: Thaum tus choj mus txog nws txoj hauj lwm, siv cov jacks kom nws txo qis mus rau cov bearings ib txhij; cuam ​​tshuam kev thauj khoom yog txwv tsis pub. Tam sim ntawd tom qab tso, nruab U-zoo li tus clamping limiters ntawm lub abutments txhawm rau txhawm rau hauv qab chord cov tswv cuab thiab crossbeams ua ke, tiv thaiv kev hloov pauv-3.