中美抗震规范的差异对比研究

41920119BuildingStructureVol．41No．9Sep．2011100045IBC2006UBC1997GB50011—2010。TU318．4B1002-848X201109-0123-04AnalysisofdifferencesbetweenChinesecodeandAmericancodeforseismicdesignLiHeLuoChaoyingLiuJunZhuZhongyiMiaoQisongBeijingInstituteofArchitecturalDesignBeijing100045ChinaAbstractSeveralAmericancodesforseismicdesignareintroducedandanalyzedthedifferencesabouttheaimsandthedetailsamongIBC2006UBC1997andChineseGB50011—2010．AtlasttheearthquakeforcesarecomparedfromIBC2006UBC1997andGB50011—2010throughanexample．Keywordsseismicdesignearthquakereturnperiodinfluen[e-mail]。0。ASCE7UBC、NBCSBC。ACI。NEHRPNationalEarthquakeHazardsReductionProgram。ASCE7NEHRPNBCSBCASCE7。2000UBCNBCSBCICCInternationalCodeCouncilASCEIBC2000UBCSBCNBC。ASCENEHRPNBCSBCIBCNBCSBCIBCASCE7ASCE7。UBC。ASCEIBCUBC1～34。1UBC1997“”5010%475。IBC2000“、ASCE7”ASCE7“、”。502%2500。2/3。《》GB50011—2010“”5063%10%2%～3%。。IBCASCE7UBC“GB50011—2010”1IBC2000UBC1997GB50011—2010－－－63.2%5%10%10%10%2%2%～5%－2%～3%、2IBCASCEUBC5010%IBC502%2011IBCASCE7UBCGB50011—20102/m/sGB50011—2010Ⅰ＞500Ⅱ250～500Ⅲ140～250Ⅳ＜140－－UBCSA＞1500SB760～1500SC360～760SD180～360SE＞180SFIBCASCE7A＞1500B760～1500C370～760D180～370E＞180F。IBC。5010%502%2.0～5.01.5。UBC5010%。IBC5010%。IBC。502%。1/32/3。。5010%1.5。502%2.0～5.01.5。2/31.33～3.331.5。2/3505%1000。502%5010%1.5。IBC502%～5%1000～2500。2/3UBC199745010%475。3。GB50011—2010Ⅰ～ⅣUBCSA～SFIBCA～F。2。IBCASCE7UBC“D”。4GB50011—20106789αmax。Tg。αmaxTg。GB50011—2010UBC50、1、2A、2B、34。Z3。ZCvCa。UBC3。Z312A2B34Z0.0750.150.200.300.40IBC。IBCBMCEMaximumConsideredEarthquake。MCE5%0.2sSS1sS1。SMS=Fa×SSSM1=Fv×S1SDS=2/3SMSSD1=2/3SM1FaFv。IBCASCE7SDSSD1。1。UBCZCvCa。IBCASCE7UBC12。421419．1ASCE2UBC5IBC4。SDSSD1A～F。、。UBC“SPC”“”。“”。。GB50011—2010、、。。6UBCCvCaZNaNvCvCa。IBCASCE7SDS=2/3FaSSSD1=2/3FvS1。IBCSSS1SSS1。GB50011—20103。。7IBCASCE7V=CS×W1CS=SDS×IE/R2SD1×IE/RT≥CS≥0.5×S1×IE/R3IETRRR6R5。ACI318。UBC1997V=Cv×I/RT×W42.5×Ca×I/R×W≥V≥0.11×Ca×I×W5GB50011—2010FEK=α1×GeqFEK=0.85×α1×Geq6IBCUBC。GB50011—20100.5。8432MPa1004kN/m22kN/m22kN/m2。1GB50011—20108Ⅱ。UBC19973SC15m。IBC2006SS=1.25gS1=0.5gCD。2GB50011—20108Ⅱ。UBC19973SD15m。IBC2006SS=1.25gS1=0.5gCD。3GB50011—20108Ⅱ。UBC52120113/m19973SC5m。IBC2006SS=1.25gS1=0.5gCD。4UBCIBCGB50011—2010UBCIBC。。UBC1997。IBCSSS1。4GBUBCIBCGB/kNUBC/kNIBC/kN184D439.7572.5455284D439.7654.0525384D439.7687.0525。。。91IBC。2IBCSSS1。SDSSD1。。3UBC。4IBCUBCGB50011—2010IBCUBCGB50011—2010。1InternationalConferenceofBuildingOfficials．Uniformbuildingcode．UBC1997S．1997．2InternationalCodeCouncil．Internationalbuildingcode．IBC2006S．2006．3AmericanSocietyofCivilEngineers．ASCE7-05MinimumdesignloadsforbuildingsandotherstructuresS．2005．4GB50011—2010S．2010．92“、、”。、、1JGJ3—2002S．2002．2GB50011—2001S．2008．3．S．2010．4．J．20043711-612．5．J．20053811-10．6．M．2003．7．M．2000．8《》．M．2004．9．M．2005．10．M．2004．11．M．2008．621