Hauv engineering,LRBfeem ntau hais txogLead Roj Hmab Bearing, uas ua ke cov hlau lead core zog dissipation nrog cov roj hmab rho tawm kom ua tiav cov teebmeem ntawm "ntev cov txheej txheem lub sij hawm, nce damping, thiab dissipating seismic zog". Nws yog dav siv nyob rau hauv lifeline thiab tej yaam num loj xws li vaj tse, txuas hniav, thiab nuclear fais fab nroj tsuag nyob rau hauv siab - siv seismic zones. Qee lub sij hawm, LRB kuj tseem tuaj yeem xa mus rau Liebherr's LRB series piling rigs (tsim nyob rau hauv lub hauv paus engineering). Qhov kev txhais lus no tsom mus rau kev siv engineering ntawm cov hlau lead roj hmab bearings.
Cov ntsiab cai tseem ceeb thiab qhov zoo
Ib qho LRB muaj cov txheej txheem sib hloov ntawm cov roj hmab thiab cov hlau phaj, nrog rau cov tub ntxhais hlau lead hauv nruab nrab. Cov roj hmab muab ntsug load-cov kabmob muaj peev xwm thiab kab rov tav yooj; cov hlau daim hlau txwv lub lateral bulging ntawm cov roj hmab; thiab cov tub ntxhais hlau lead dissipates lub zog los ntawm cov yas deformation thaum muaj av qeeg. Tom qab av qeeg, cov tub ntxhais hlau lead tuaj yeem rov qab tau nws cov duab thiab rov ua dua tshiab, nthuav tawm tus cwj pwm bilinear hysteretic nrog damping piv ntawm 15% -20%. Nws tuaj yeem cais kwv yees li 80% ntawm seismic rog, txo cov seismic teb ntawm cov qauv.
- Qhov Tseem Ceeb Zoo: Muaj feem xyuam rau siab - siv (9-degree) thiab nyob ze - thaj tsam seismic; tsis xav tau dampers ntxiv; zoo heev tom qab av qeeg rov pib muaj peev xwm; siab durability thiab kev ntseeg siab.
Hom Engineering Application Scenarios
- Cov tsev kho mob hauv siab - thaj tsam seismic hnyav: Piv txwv li, Chuantou Xichang Tsev Kho Mob (nyob hauv thaj tsam 9-degree seismic) tau txais 517 LRBs, ua rau nws yog lub tsev kho mob loj tshaj plaws hauv Suav teb thiab ua kom muaj kev ua haujlwm tsis tu ncua thaum muaj av qeeg.
- Kev thauj mus los loj: Lub tsev davhlau ya nyob twg ntawm Beijing Daxing International Tshav Dav Hlau siv LRBs, nrog cov hlau lead ua kom muaj qhov sib piv ntawm 18%. Kab rov tav hloov chaw yog tswj tsis pub dhau 80% ntawm tus nqi tsim, txhim khu kev ruaj ntseg seismic.
- Cov tsev kawm ntawv, chaw ceev xwm ceev, tsev cia puav pheej, thiab lwm yam.: LRBs ntsia rau hauv ncej- cov tsev qhia ntawv muaj peev xwm txo tau cov seismic puag shear, tiv thaiv cov neeg ua haujlwm thiab khoom siv.
- Nyob ze - choj txhaum: Rau nruab nrab - mus rau - lub sij hawm ntev (1.5–3s) cov choj sib cais nyob ze ntawm - qhov chaw txhaum, txawm hais tias lub zog ntawm cov hlau lead yuav txo qis, qhov kev hloov pauv tseem tswj tau, ua rau nws tsim nyog rau av qeeg muaj zog thiab nyuaj seismic motions.
- Railway / tsheb thauj mus los choj: LRBs siv nyob rau hauv siab - kev tsheb ciav hlau ceev choj txo txoj kev deformation thiab tsheb ciav hlau kev pheej hmoo ua haujlwm, ua tau raws li lub sijhawm ntev - thiab siab - deformation yuav tsum tau ntawm cov choj.
- Hla - hiav txwv thiab cov choj tshwj xeeb: Ua ke nrog FPS (Friction Pendulum System) thiab lwm yam khoom siv, LRBs tswj kab rov tav hloov chaw thiab kev ntxhov siab concentration, txhim kho seismic kev nyab xeeb ntawm cov qauv.
- Nuclear fais fab nroj tsuag / me me modular reactors: LRBs yog siv rau kev sib cais ntawm cov txheej txheem ntim thiab cov khoom siv hauv chav tswj, txo cov kab rov tav acceleration teb los ntawm 74.6% thiab pob zeb tensile kev nyuaj siab los ntawm 33.5%. Qhov no tiv thaiv cov yas puas thiab txhim kho cov seismic kev nyab xeeb margin.
- LNG cia tanks, hydropower chaw nres tsheb, thiab lwm yam.: Seismic isolation txo cov seismic teb ntawm cov khoom siv thiab cov qauv, ua kom muaj kev nyab xeeb ntawm cov chaw siv hluav taws xob.
- Retrofitting ntawm cov tsev qub: Ntxiv LRBs ntawm lub hauv paus thiab cov superstructure tuaj yeem txhim kho kev ua haujlwm seismic ntawm cov tsev nyob rau hauv siab - siv cov cheeb tsam tsis muaj kev hloov pauv loj rau cov qauv qub.
- Prefabricated qauv: LRBs yog sib xws nrog ceev ceev installation ntawm precast Cheebtsam thiab hais txog seismic vulnerabilities ntawm prefabricated lug, ntsuas kev tsim kho efficiency thiab kev nyab xeeb.