Choj bearings yog lub zog tseem ceeb- xa cov khoom txuas txuas tus choj superstructure nrog piers thiab abutments. Lawv ua peb lub luag haujlwm tseem ceeb:load kis tau tus mob, deformation tso tawm thiab vibration buffering, ncaj qha cuam tshuam rau cov qauv kev ruaj ntseg, kev pab cuam lub neej thiab kev nyab xeeb ntawm kev tsav tsheb ntawm cov choj.
Nruab nrab ntawm tus choj girders thiab piers, choj bearings dais ntsug thiab kab rov tav loads xws li tuag load, tsheb thauj khoom, cua load thiab seismic load, thiab hloov cov loads sib npaug zos rau lub hauv paus. Lawv kuj hloov mus rau txoj kab rov tav hloov pauv thiab hloov deformation tshwm sim los ntawm qhov kub thiab txias hloov, pob zeb shrinkage thiab creep, tsheb nres thiab av qeeg, tsis txhob muaj kev sib tsoo thiab kev puas tsuaj los ntawm kev sib tsoo.
Lawv feem ntau muab faib ua plaub hom los ntawm kev ua tau zoo thiab daim ntawv thov: Laminated roj hmab bearings yog haum rau me me thiab nruab nrab- ncua kev txhawb nqa beam choj; lauj kaub roj hmab bearings feature loj bearing muaj peev xwm thiab tig lub kaum sab xis, zoo tagnrho rau ntev -span nruam beam txuas hniav thiab steel choj; kheej kheej bearings enables multi{2}}directional rotation, cables {3} txuas hniav, siab - kev tsheb ciav hlau ceev thiab lwm yam kev sib tw choj; tshwj xeeb bearings nrog rau kev sib txhuam pendulum bearings (FPB) thiab seismic cais bearings yog tsim los rau siab seismic siv cov chaw thiab txuas hniav nyob rau hauv tshwj xeeb loads.
Txawm hais tias me me, choj bearings tseem ceeb heev rau kev ruaj ntseg choj. Kev xaiv kom raug, kev teeb tsa thiab kev saib xyuas tuaj yeem cuam tshuam cov txheej txheem kev ntxhov siab, cuam tshuam deformation cuam tshuam thiab txuas ntxiv kev pabcuam choj lub neej. Kev laus lossis kev ua tsis tau zoo ntawm cov kabmob yuav ua rau kev sib txawv ntawm qhov sib txawv, pier tawg thiab kev tsav tsheb tsis zoo, thiab tseem tuaj yeem ua rau muaj kev nyab xeeb loj, ua rau lawv muaj kev tswj xyuas tseem ceeb hauv kev tsim kho choj thiab kev saib xyuas.