TS EN 15129: 2009 Clause 8 - Cov Lus Qhia rauSeismic Isolatorsrau Kev Nyab Xeeb Kev Nyab Xeeb
EN15129: 2009 Clause 8 yog tus qauv tseem ceeb rauseismic engineering, tswj kev tsim, khoom siv, kev ua tau zoo, thiab kev sim ntawmseismic isolators-cov khoom tseem ceeb uas tiv thaiv cov tsev, txuas hniav, thiab lwm yam kev tsim los ntawm kab rov tav seismic rog. Los ntawm kev tsom mus rau qhov tsis tshua muaj kab rov tav nruj, muaj peev xwm hloov pauv loj, thiab ruaj khov damping, cov kab lus no ua kom cov neeg nyob ib leeg txo qis seismic txaus ntshai thaum tswj xyuas cov qauv kev ncaj ncees raws li kev pabcuam. Hauv qab no yog cov ntsiab lus ntawm nws cov kev cai tseem ceeb, tsim los rau cov engineers, cov neeg cog lus, thiab cov kws tshaj lij kev muag khoom.
I, Core Scope thiab Lub Hom Phiaj
Clause 8 tswj ob pawg thawj cais cais: Cov elastomeric isolators(rubber-raws li, nrog los yog tsis muaj txhuas/polymer plugs) thiabsliders (Cov thiab tiaj tus qauv tsim). Steel springs isolators tsis suav nrog tab sis tau npaj rau kev hloov tshiab yav tom ntej.
Lub hom phiaj tseem ceeb tshaj plaws yog:
Txhawb nqa lub ntiajteb txawj nqus yam tsis muaj kev nkag siab ntau dhau thiab tiv thaiv tsis yog -kev ua seismic (cua, thermal hloov chaw).
Ua kom muaj kev hloov pauv loj nyob rau hauv kab rov tav thaum muaj av qeeg thaum tiv thaiv ntsug load-cov kabmob muaj peev xwm.
Muab cov damping txaus (los yog cia siab rau cov khoom siv ntxiv) los tswj seismic displacements.
Ua kom muaj kev sib raug zoo nrog cov txheej txheem hauv qab tsis yog - seismic tej yam kev mob.
iI, Hom Isolator Tseem Ceeb thiab Cov Kev Xav Tau
Cov no suav nrogsiab damping roj hmab bearings (HDRB, b(100%)>0.06), low damping roj hmab bearings (LDRB, b (100%) Tsawg dua lossis sib npaug li 0.06),roj hmab bearings (LRB), thiabPolymer plugged roj hmab bearings (PPRB).
Khoom siv: Virgin elastomers (tsis muaj roj hmab reclaimed) nrog lub shear modulus ntawm 0.3-1.5 MPa. Cov ntsaws ruaj ruaj yuav tsum muaj ntau dua lossis sib npaug rau 99.9% purity; steel reinforcing phaj ua raws li EN 1337-3: 2005.
Kev ua tau zoo: Kab rov tav txhav (Kb) thiab damping (b) yuav tsum nyob ruaj khov nyob rau hauv shear hom (5% -250%), zaus (0.1-2.0 Hz), thiab kub (TLrauTU). Kev ntsuam xyuas kev laus (14 hnub ntawm 70 degree) paub meej tias tsawg dua lossis sib npaug li 20% hloov khoom vaj khoom tsev tshaj 60 xyoo kev pabcuam.
Kev sim: Hom kev ntsuam xyuas muaj xws li compression stiffness (± 30% kam rau ua rau ntau lawm), lateral peev, thiab cyclic loading. Lub Hoobkas tswj kev tsim khoom yuav tsum tau kuaj xyuas qhov chaw (Ntau dua lossis sib npaug li 20% ntawm cov khoom siv) txhawm rau txheeb xyuas qhov sib xws.
Leveraging pendulum geometry rau restore zog thiab kev sib txhuam rauzog dissipation, cov kev sib cais no (nrog rau ob chav concave designs) haum rau kev sib hloov ntawm qhov chaw zawv zawg thib ob.
Khoom sivCov ntaub ntawv zawv zawg raws li EN 1337-2; mating nto siv cov hlau austenitic (Ntau dua lossis sib npaug li 2.5 hli tuab) lossis tawv chromium plating (Ntau dua lossis sib npaug li 100 μm). Backing phaj yog tsim los ntawm EN 10025 steel los yog sib npaug.
Kev ua tau zoo: Vertical load peev xwm ntawm2NSd(tuag + tsis yog- seismic nyob loads), kab rov tav hloov ntawm bdEd ( b=1.0), thiab hnav tsis kam (tsawg dua lossis sib npaug li 20% thickness txo). Dynamic txhuam coefficients yuav tsum nyob hauv ± 15% ntawm tus nqi tsim.
Kev sim: Ntev-kev ntsuas kev sib txhuam (Ntau dua lossis sib npaug li 10,000 m rau cov txuas hniav) siv tau; zawv zawg cais kev xeem (12 xeem khiav) txheeb xyuas tus cwj pwm seismic, suav nrog ob- kev taw qhia kev thauj khoom.
3. Plav Nto Sliders
Ib qho txawv ntawm qhov nkhaus sliders (infinite radius ntawm curvature) uas tsis muaj qhov muaj peev xwm rov qab -centring. Lawv xav tau cov khoom siv kho dua tshiab thiab ua raws li cov khoom siv tib yam, tsim qauv, thiab cov qauv ntsuas raws li cov kab nkhaus nkhaus (Clause 8.3).
Daim ntawv tseem ceeb tsim thiab kev teeb tsa
Kev faib tawm: Rau cov txuas hniav, qhov siab tshaj plaws hloov chaw (dmax) suav nrog seismic hloov chaw ( xdbd kev, x=1.5) ntxiv rau offsets los ntawm kev ua tas mus li, ntev - lub sij hawm deformations, thiab 50% thermal ua. Lwm cov qauv siv xdbd kev ( x=1.2).
Kho: Mechanical anchorage yog yuav tsum tau; tsawg kawg yog 75% ntawm kab rov tav load yog txhawb nqa los ntawm cov thauj tog rau nkoj yog seismic ntsug loads yog soj ntsuam dynamically.
Environmental AdaptationKev cais tawm rau cov xwm txheej hnyav (immersion, tshuaj) xav tau kev tiv thaiv ntxiv rau EN 1337-9.
III, Yog vim li cas Clause 8 Matters
TS EN 15129: 2009 Clause 8 muab cov txheej txheem sib koom ua ke rauseismic isolatorKev ua raws cai, ua raws li Eurocodes (EN 1998 series) txhawm rau ua kom muaj kev nyab xeeb ntawm cov qauv thoob plaws Europe. Nws cov khoom siv nruj thiab cov kev sim ntsuas txo qis kev ua haujlwm sib txawv, thaum cov qauv tsim qauv yooj yim ua rau kev sib koom ua ke hauv kev sib cais.
Rau cov kws tshaj lij nrhiav kev ntseeg siabseismic kev daws teeb meem, Nqe 8 yog cov lus qhia meej rau kev qhia meej, kev yuav khoom, thiab kev cais cov neeg tsim nyog. Los ntawm kev ua raws li nws cov lus qhia, cov phiaj xwm ua tiav kev tiv thaiv muaj zog tiv thaiv av qeeg thaum ua raws li cov cai tswj hwm thiab kev nyab xeeb.
