Xaiv Ntawm Cov Lead -Rubber Bearings (LRB) thiab Friction Pendulum Systems (FPS): Daim Ntawv Thov, Qhov Sib Txawv, thiab Seismic Isolation Design Guide
Seismic cais tawm yog ib qho ntawm cov tswv yim zoo tshaj plaws los tiv thaiv cov tsev, txuas hniav, thiab cov txheej txheem tseem ceeb los ntawm kev puas tsuaj av qeeg. Thaum nws los txog rau lub hauv paus kev cais tawm,Lead -Rubber Bearings (LRB)thiabKev sib txhuam Pendulum Systems (FPS)yog ob qho kev daws teeb meem uas siv ntau tshaj plaws hauv kev tsim vaj tsev niaj hnub. Engineers thiab tus tswv qhov project feem ntau ntsib cov lus nug tseem ceeb:Dab tsi yog qhov txawv ntawm LRB thiab FPS daim ntawv thov, thiab kuv yuav xaiv qhov kev sib cais seismic rau kuv lub tsev li cas?
Phau ntawv qhia no muab cov ncauj lus kom ntxaws sib piv ntawm LRB vs FPS, suav nrog lawv cov hauv paus ntsiab lus, kev siv zoo tagnrho, cov yam ntxwv ntawm kev ua tau zoo, thiab cov qauv kev xaiv ua tau raws li cov cai thoob ntiaj teb xws li EN 15129, los pab koj txiav txim siab rau koj qhov kev tsim seismic.
LRB yog ib txwm elastomeric seismic cais cov kabmob, tsim los ntawm cov txheej txheem sib hloov ntawm siab -damping roj hmab thiab steel daim hlau, nrog rau cov hlau lead hauv nruab nrab.
• Muaj nuj nqi: Cov khaubncaws sab nraud povtseg muab kev yooj yim los txuas lub tsev lub sijhawm ntuj tshaj li av qeeg zog peaks, thaum cov tub ntxhais hlau lead dissipates seismic zog los ntawm cov yas deformation.
• Key Performance: Kev ua tau zoo damping piv li ntawm 15-20%, nrog rau lub sijhawm cais ntawm 1.5-2.5 vib nas this, tsim nyog rau kev siv cov qauv txheej txheem.
Kev sib txhuam Pendulum Systems (FPS)
FPS yog zawv zawg - hom seismic cais tawm cov kabmob, muaj cov kab hlau sib txuas, qhov qis- kev sib txhuam slider, thiab cov phaj sab saud.
• Muaj nuj nqi: Lub zog yog dissipated los ntawm kev sib txhuam ntawm lub slider thiab lub nkhaus nto, thaum lub ntiajteb txawj nqus thiab lub kheej kheej geometry tsim ib tug self-centering nyhuv.
• Key Performance: Lub sijhawm cais tawm tsuas yog nyob ntawm lub vojvoog ntawm qhov curvature (ywj siab ntawm lub tsev loj), thiab qhov sib piv ntawm damping ntau tshaj 30% yog ua tiav nrog cov ntaub ntawv sib txawv sib txawv thiab kev kho saum npoo, raws li tau lees paub hauv ntau cov ntawv ceeb toom seismic cais tawm.
Kev xaiv ntawm LRB thiab FPS feem ntau yog nyob ntawm koj qhov project hom qauv, kev thauj khoom, ib puag ncig, thiab lub hom phiaj ua haujlwm. Hauv qab no yog ib qho kev sib cais ntawm lawv cov kev siv ntau tshaj plaws thiab qhov sib txawv tseem ceeb:
1. Hom qauv thiab lub tsev qhov siab
| LRB (Lead{0}}Rubber Bearings) | FPS (Friction Pendulum Systems) |
Nruab nrab-nce mus rau cov qauv siab- cov tsev nce siab (tsawg dua lossis sib npaug li 100m): Txoj kev mus- rau kev xaiv rau cov tsev nyob, chaw ua haujlwm pej thuam, tsev kawm ntawv, tsev kho mob, thiab cov tsev pej xeem nrog cov qauv kev teeb tsa tsis tu ncua.
| High-nce thiab super- cov tsev siab (Ntau dua lossis sib npaug li 100m): Qhov zoo tshaj plaws rau cov skyscrapers thiab towers qhov twg lub sij hawm nyob ib leeg ntev (3-5 vib nas this) yuav tsum tau decouple tus qauv los ntawm seismic motion, thaum tseem tswj cua - induced vibrations.
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Nruab nrab- txuas txuas txuas thiab cov txheej txheem txheej txheem: Zoo- haum rau kev loj choj thiab cov neeg taug kev txuas hniav nrog cov khoom ntsug ntsug.
| Loj - ncua thiab hnyav: Qhov kev daws teeb meem zoo tshaj plaws rau lub tshav dav hlau terminals, chaw ntau pob, cov chaw sib tham, LNG cia tso tsheb hlau luam, thiab cov chaw tsim hluav taws xob nuclear, qhov chaw hnyav hnyav hnyav thiab cov kab rov tav hloov pauv loj yuav tsum.
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2. Load Conditions thiab rhiab heev
• LRB Limitations:
￮ Sensitive rau variations nyob rau hauv ntsug load, uas yuav hloov tau nruj thiab cais lub sij hawm.
￮ Tsawg tensile muaj peev xwm (feem ntau<1 MPa), making them unsuitable for structures with significant uplift forces (e.g., tall towers, offshore structures).
￮ Damping kev ua tau zoo yuav degrade nyob rau hauv huab cyclic loading los yog kub kub.
• FPS Qhov Zoo:
￮ Load-lub sijhawm cais tawm ywj pheej: Lub sijhawm ntawm lub cev tsuas yog txiav txim siab los ntawm lub vojvoog ntawm curvature, kom ntseeg tau tias kev ua haujlwm zoo ib yam tsis hais lub tsev loj lossis kev hloov pauv.
￮ Ultra-siab ntsug load peev xwm, nrog rau tus kheej bearings txhawb ntau txhiab tons, ua rau lawv zoo tagnrho rau hnyav industrial thiab tseem ceeb infrastructure tej yaam num.
￮ Tsawg torsional rhiab heev, uas muaj txiaj ntsig zoo rau cov tsev tsis tu ncua lossis cov qauv nrog cov khoom tsis sib xws.
3. Environmental Durability thiab Temperature Stability
• LRB kev txiav txim siab:
￮ Kub- cov khoom siv roj hmab rhiab heev, nrog kev ua haujlwm zoo ntawm -20℃thiab 40℃. Qhov txias txias lossis cua sov tuaj yeem ua kom tawv lossis muag cov roj hmab, txo cov kev ua haujlwm ntawm kev sib cais.
￮ Tsis muaj teeb meem rau UV hluav taws xob, ozone, thiab tshuaj lom neeg corrosion, yuav tsum muaj cov txheej txheem tiv thaiv thiab kev saib xyuas tsis tu ncua.
• FPS Qhov Zoo:
￮ Kev khiav hauj lwm kub ntau (-40℃txog 60 degree), ua rau lawv haum rau huab cua huab cua, los ntawm cov cheeb tsam txias rau sab qaum teb mus rau qhov chaw sov suab puam.
￮ Resistant mus rau kev laus, corrosion, thiab ib puag ncig degradation, nrog tsawg tsawg yuav tsum tau tu nyob rau hauv ib tug 50+ xyoo kev pab cuam lub neej. Qhov no ua rau FPS yog qhov kev xaiv zoo tshaj plaws rau cov qauv ntawm ntug hiav txwv, cov chaw tsim khoom, thiab tej thaj chaw deb infrastructure.
4. Tshaj tawm -Kev Tiv Thaiv Av qeeg thiab kev ua haujlwm tsis zoo
• LRB Performance:
￮ Kev hloov pauv seem yuav tshwm sim vim yog cov yas deformation ntawm cov hlau lead, uas yuav tsum tau ua tom qab - av qeeg realignment.
￮ Standard damping ratios (15–20%) yog txaus rau feem ntau qis - mus rau - nruab nrab seismic zone tej yaam num.
• FPS Kev Ua Haujlwm:
￮ Nyob ze -zero residual displacement: Tus kheej- lub hauv paus txheej txheem ua kom cov qauv rov qab los rau nws txoj haujlwm qub tom qab av qeeg, txo qis sijhawm thiab kho cov nqi kho mob - tseem ceeb rau kev rov ua haujlwm dua - cov haujlwm tsom mus rau cov tsev kho mob, cov chaw khaws ntaub ntawv, thiab cov chaw teb thaum muaj xwm txheej ceev.
￮ Tunable siab damping: Los ntawm kev kho cov kev sib txhuam coefficient thiab cov khoom siv slider, FPS tuaj yeem ua tiav qhov sib piv damping tshaj 30%, uas zoo heev rau kev tswj seismic displacements nyob rau hauv siab - seismic zones.
Qhov kev xaiv ntawm LRB thiab FPS tsis yog hais txog qhov system "zoo dua," tab sis qhov zoo tshaj plaws rau koj qhov project cov kev cai tshwj xeeb. Siv cov kauj ruam no -los ntawm - kauj ruam ua haujlwm los txiav txim siab koj:
Kauj Ruam 1: Txheeb xyuas koj lub hom phiaj kev tsim thiab kev ua tau zoo
• Lub tsev qhov siab thiab ncua:
￮ Xaiv LRB rau nruab nrab -nce, cov tsev tsis tu ncua nrog cov qauv spans.
￮ Xaiv FPS rau super-siab, loj- ncua, lossis cov qauv tsis sib xws uas yuav tsum tau nyob ib leeg ntev.
• Resilience xav tau:
￮ Yog tias koj qhov phiaj xwm xav kom rov qab sai sai -chaw nyob - av qeeg (piv txwv li, cov chaw tseem ceeb), ua qhov tseem ceeb FPS rau nws tus kheej - qhov chaw nruab nrab thiab qhov chaw seem qis.
￮ Rau cov tsev nyob lossis cov tsev lag luam uas muaj cov hom phiaj ua kom muaj zog, LRB yog tus nqi - kev xaiv zoo.
Kauj Ruam 2: Ntsuas Load thiab Environmental Conditions
• Load yam ntxwv:
￮ Xaiv LRB rau cov tsev uas tsis sib xws, ruaj khov ntsug loads.
￮ Xaiv FPS rau qhov hnyav, sib txawv, lossis cov khoom hnyav (piv txwv li, LNG tso tsheb hlau luam, chaw ntau pob ru tsev) thiab cov qauv uas muaj kev pheej hmoo siab (nrog rau cov khoom siv tiv thaiv ntxiv -uplift).
• Kev nyab xeeb thiab qhov chaw nyob:
￮ Siv FPS rau tej yaam num nyob rau hauv huab cua kub, tej cheeb tsam ntug hiav txwv dej, los yog muaj ib puag ncig uas muaj corrosion siab heev.
￮ LRB yog tsim rau cov huab cua me me nrog kev tswj hwm ib puag ncig.
Kauj Ruam 3: Xyuas kom muaj kev ua raws cai thiab kev kuaj xyuas qhov tseeb
Raws liTS EN 15129, cov khoom tsim ntawm seismic isolators yuav tsum tau lees paub los ntawm cov txiaj ntsig kev xeem. Ib qho kev sib tw ntau hauv FPS tsim yog qhov tsis sib xws ntawm qhov kev xav thiab kev sim kev sib txhuam coefficients:
• Yog tias cov kev xav tsim siv μ=8-12% tab sis cov txiaj ntsig kev sim qhia tau qis dua qhov tseem ceeb (piv txwv li, μ ≈ 5.2–5.7%), koj yuav tsum tau kho cov qauv tsim los yog muab kev ncaj ncees ntxiv los txhawb kev siv cov khoom qub.
• Rau LRB, xyuas kom meej tag nrho - ntsuas ntsuas ntsuas lub sijhawm ua haujlwm tau zoo, qhov sib piv, thiab seismic quab yuam xav tau ua ntej ua tiav qhov tsim.
Kauj Ruam 4: Ntsuas Tus Nqi Pib Pib thiab Tus Nqi Li Cas
• Tus nqi ua ntej: LRB feem ntau muaj tus nqi pib qis dua, ua rau nws txaus nyiam rau pob nyiaj siv -cov txheej txheem rhiab heev.
• Ntev - tus nqi: Thaum FPS yuav muaj kev nqis peev ntau dua, nws cov kav ntev, kev saib xyuas tsis tshua muaj, thiab kev ua haujlwm zoo feem ntau ua rau cov nqi qis dua, tshwj xeeb tshaj yog rau cov txheej txheem tseem ceeb thiab cov haujlwm hauv siab - thaj tsam seismic.
Ob leeg Lead-Rubber Bearings (LRB) thiab Friction Pendulum Systems (FPS) yog cov pov thawj, siab -kev ua tau zoo rau kev sib cais ntawm seismic, txhua tus muaj qhov sib txawv thiab cov kev siv zoo tagnrho.
• LRB yog qhov zoo tshaj plaws rau nruab nrab- nce, cov qauv vaj tse nyob rau hauv cov huab cua me me, muab kev ua tau zoo thiab cov nqi ua haujlwm rau qis- rau- thaj chaw seismic nruab nrab.
• FPS ua tau zoo nyob rau hauv siab-nce, loj- ncua, hnyav, lossis cov phiaj xwm tseem ceeb, xa cov khoom thauj- ywj pheej ua tau zoo, huab cua puag ncig, siab damping, thiab superior ncej- av qeeg resilience.
Los ntawm kev ua raws li koj txoj kev xaiv nrog koj qhov project cov kev xav tau ntawm cov qauv, cov hom phiaj kev ua haujlwm, ib puag ncig, thiab pob nyiaj siv, koj tuaj yeem ua kom muaj txiaj ntsig zoo, ntev - kev tiv thaiv seismic ntev rau koj lub tsev.
