GB 50057-2010 建筑物防雷设计规范

lJDC p GB50057-2010 Codefordesignprotectionof structuresagainstlightning 2010-11031fj2011 - 10-01 $1$.A:!*IJ0011mJ:l1JOCiffll*ft1fj $1$.A:!*OOOO.m.m Codefordesignprotectionof structuresagainstlightning GB50057 - 2010 .$n:m _I. m$n:$Attm.$ Jitih8M:201110Ji18 2011:H:* m824-5 *r2t:tiJ00tl (mI?lJW:it.mmEJ01ff 1R.1Itffot!1m11iliit.mm:7g00nl1L%7g GB50057-2010,201110Ji1BJJlo;lt,3.0.2, 3.0.3,3.0.4,4.1.L4.1.2,4.2.1(2,3),4.2.3(L2),4.2.4 (8),4.3.3,4.3.5(6),4.3.8(4,5),4.4.3, 4.5.8,6.1.2 ()7g5liifIjIJjj:)c,16Ft!1A1Ta)t!Im1Iiliit.mm: GB50057-94(2000#I0PJP1f*-1i!:xt(if:if19:it*Ji!. m)GB50057-94(2000cltUE31(:f:ffEi,1IXXJL *1Y:.1f*-LjJL!lJ-fiSd,Jj!U,*i-fi, if:8Jif5t,if:8Jif*:ow:,ifI,if$-Jt!.1ittJllcfIP o *Jil.m1iT8J!lJ7g: 1.tif/toT*i-fi-:!1jf0 2.1!:Tt!JD!RJt!.ff :!VJt!.ff8-)*:ow:0 3.JETW1fI*ffl/Fp8J31(0 4.1BJlTf9itl$-8J*Ji!.Ji:0 5.i:MIHJil.Ji:TJt!.4:fdJEJt!.+*mJ2;mJt!.tm1*1?IB*0 6.ratitTif$-:k:ttl!.8Jc1jZ-:t5J*ltitJl0fi:,*ifJ:iiIiftiJTflit itif$-BJi:if:8J.5t8JBmo 7.W5tft:TJl.1*8J31(0 *.m.1*8J7gtt,FMBo *.mE8m19:Wm.fiwtt8JM *f,E8mIlI*-ftm.B1jtfiJj,E8j(;Ifj0 PJm.1*!lJ8JM*fo*.m1Bji,18ff-J.,:tm1Y:.m:1BJl 1 )Ez5l.t,f1tJi!.;fIli)U0051;00ffiIl-0P(Jt!.:I:II:It JiOlf#!Jm:gl1!f-=:J)f:lt5%,I!JTIifc100089),IV.J!4-ffifiTat *mm:tI1(1.l,1(1.fft,$1(1.fft,.A;fIl$ 1iA: m1(1.f.it:OOmI.illdtJJlitittl1 :1(1.f.it:0051;00ffiIl-0P 1(1.f.it:ijJHIllitit7iJfJl 004:1ftt!1? :ItJitin:iM1f:I1(Y!tlJL OOE1tIllit-0P 001Jtlitit7iJfJl :A:* y*+M*XT :_A:*hT.n J3tl+1;*E* 2 I,;,JJW(1 ) 271(ift.(2) 3J!1t!lmttJjJm7t(8 ) 4J!1t!lmttJjJmmJil(10) 4. 1*JE(10) 4. 2-/iJitlt!Jio!J/iJi1IHIifnm:.(10) 4.3=/iJitlt!Jio!J/iJitltfllnm:.(20) 4. 4:=:/iJitlt!Jio!J/iJitltfllnm:.(27) 4.5Jtt!./iJitltfllnm:.(31) 5jJm:li(34) 5.1/iJitltJim!J,fJ*4(34) 5.21tlJ:1(35) 5.35lr(39) 5.4t!:m:(40) 6jJmitrrt:!.1ittf!ij(lfr(43) 6.1*JE(43) 6.2/iJitlt!R;fIl/iJitltTlIEt1liUi/fi(97) :)(iJtIjj(99) z Contents 1GeneralprovIsions,. 2Terms2 3Classificationofstructurestobeprotectedagainst lightning(8 ) 4Protectionmeasuresforstructuresagainstlightning(10) 4. 1Basicrequirement(10) 4. 2Protectionmeasuresforfirstclassofstructurestobe protectedagainstlightning(10 ) 4. 3Protectionmeasuresforsecondclassofstructuresto beprotectedagainstlightning(20 ) 4. 4Protectionmeasuresforthirdclassofstructurestobe protectedagainstlightning(27 ) 4. 5Otherprotectionmeasuresagainstlightning(31) 5Lightningprotectionsystem(34) 5.1Materialsforlightningprotectionsystem(34) 5.2Air-terminationsystem(35) 5.3Down-conductorsystem(39) 5.4Earth-terminationsystem(40) 6ProtectionagainstLEMPClightningelectromagnetic impulse),(4.3 ) 6. 1Basicrequirement(4.3 ) 6.2Lightningprotectionzonesandprotectionagainst LEMP(43) 6.3Requirementsformagneticshielding,earthingand 3 AppendixE AppendixF AppendixG equipotentialbonding(45 ) 6. 4RequirementsforinstallationandselectionofSPDs (surgeprotectivedevices)(55) AppendixAExpectedannualnumberoflightning flashforstructures. . . . . . . . . .(59 ) AppendixBStructurepartssufferedeasilybylightning stroke(62) Appendix.CConversionfrompowerfrequencyearthing resistancetoimpulseearthingresistanceof earth-terminationsystem(63) AppendixDDeterminationofprotectedvolumeof air-terminationsystemwithrollingsphere method(66 ) Valuesofcoefficientk,(77) Lightningcurrent(80) Calculationofinducedvoltagesand currentsinloops(83) AppendixHCross-section oftheenteringcable screen(86) AppendixJSurgeprotectivedevices(88) Explanationofwordinginthiscode(96) Listofquotedstandards(97) Addition:Explanationofprovisions(99) 4 1.o.1j-fll)(!Io/J,1Mrciff!,cut rfmItJJMe!IFJIB9It!;flllt!-=f*g;c:tJltf!X!ff!fi3tifr,!J 1iJ3,iZ*1Gi1f,rrjf1tJl!,ffjtlJE;$:m:0 1.o.2;$:tJ!m:i!HllTJt,itI:iAAiJJ!f1Eflj:;fllrfIt!TIS193tJ!,l:J,ffiJt;fjJI0 1.o.4(i1)1ft!lo/JJ)jjrfia:it,1)Z1t;$:tJ!m:,rt61)Z1t00* fJ!11:fl*:fff,iiB9tJ!JE0 1 2*i! 2.0.1xt:i!IAJrtrlightningflashtoearth E!3:k:till(15:tillLEt1tl)zJBJ8JiXiX1irt!.0 2.O.2rtrlightningstroke xt:i!IArtrBJI!J(1irt!.0 2.O.3rtr,pointofstrike rtrrtr:k:i!LtlL8JoI!J(rtr 1-rtr,0 2.O.4EI!1m:lightningcurrent 1m:f!1llrtr,8JEI!mEa 2.O.51lJJ1l1jilightningprotectionsystem(LPS) mrYIAJrtrrtrrJ!t(J)1LJ!t(;f1J)1mJli:i!IJVt8J ttmWAm,*$IlJJji$IlJJjimJVto 2.O.6$1lJJ1l1jiexternallightningprotectionsystem IAJff,71r:tilljiJlJVt0 2.O.7$1lJJ1l1jiinternallightningprotectionsystem 1lJJEI!m!3*$IlJJji8J.mJVto 2.O.8IAJffair-terminationsystem 1IAJrtr8JIAJ;ff,IAJ*,IAJ,IAJJ).JbtITfi, JlfJlJVt0 2.O.971rdown-conductorsystem mrEI!ff:i!ji8Jo 2.O.10t:i!jiearth-terminationsystem :i!:i!8J,mr1llEl!*aA:k:i!o 2.O.11:i!earthelectrode z Am.ffi. 2.O.12t:fg:tt!J.earthingconductor A91wrt:fg-F!Zl:tfuEt1at;Af1li!.tzffij T,Et!iram:tfg:tfu*89at. 2.0.131in=rfltdirectlightningflash rAJ* 1lt:fg*T(:M1)1Jl:!fm,Jtm!fm,*:tfujr$fitf! 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