地下车库顶板消防车活荷载的合理取值研究

43120131BuildingStructureVol．43No．1Jan．2013200031。8.4m×8.4m、。SAP2000。。TU312+．1A1002-848X201301-0044-04ResearchonreasonablevalueofliveloadforfireengineonallburiedundergroundgarageroofDaiGuanminTianKunChinaHaisumEngineeringCo．Ltd．Shanghai200031ChinaAbstractBytheactingcharacteristicanalysisoffireengine'sliveloadeffectitisindicatedthatfireengine'sliveloadeffectshouldcombinedinaccidentalcombinationforultimatelimitstatuscomputationorcombinedinfrequentcombinationforserviceabilitylimitstatuscomputation．Theworstdisposalsoffireenginetireactingontheroofwasdiscussedwhentheroofstructureisone-wayslabtwo-wayslabornon-beamslabfortheexampleofthecommoncolumnspan8.4m×8.4mofallburiedundergroundgarage．Theequivalentuniformfireengine'sliveloadvaluewasgivenbyfiniteelementsoftwareSAP2000usingthin-plateelement．Therecommendationismorereasonableandhasbettereconomicandsocialbenefitswhetherconsideringtheconceptofloadcombinationorcomparingwiththefireengineloadrecommendedbythecodewhichconsideringfireengine'sliveloadasgeneralliveload．Keywordsactingcharacteristicaccidentalcombinationfrequentcombinationfireengine'[e-mail]。0。。《》GB50009—201215.1.135kN/m220kN/m2。。11.1。。。、、、。1.250。1.3。。431．1.4。1.5。22.1。3.2.6“”。。“”。3.2.6-1Sd=∑mj=1SGjk+SAd+ψf1SQ1k+∑ni=2ψqiSQik1SGjkGjkSQikiQikSQikSAdAdψf11ψqii。2.2。3.2.7～3.2.10“”。。。。3.2.9Sd=∑mj=1SGjK+ψf1SQ1K+∑ni=2ψqiSQiK2123。。5.1.1。2.3。300kN12。+300kN2430kN60kN0.2m×0.6m。1300kN8.1m×8.1m～8.4m×8.4m8.4m×8.4m。32。83。22.4SAP20008。32.7.143.2.112250mm。250mm5420133300mm100mm120mm300mm。0.5m×0.5m0.3m×0.7m0.3m×0.5m。XYZ。1。/kN/m213a3b3c3d3e3f3g3h141115131513151217141815171515123aceg18kN/m235kN/m217kN/m215kN/m220kN/m2。2.5。。4≤0.5m42＞0.5m2＞1.07m、444。42～4m3m×3m～6m×6m10～0.5m。2＞0.5m。。423。2珔S/m00.51.01.52.02.53.0210.9220.8440.7370.5920．4730．400/m310.9580.8950.8250.7360．6330．499410.9820.9440.8500.7570．6720．598珔S=S+h－h0/2tgQShh0h0=100mmQ45°。3珔S/m00.51.01.52.02．53．03m×3m10.8990.8010.6870.5470．4740．3904m×4m10.9250.8510.7470.6350．5440．4715m×5m10.9500.8000.8270.7180．6140．5376m×6m10.9710.9430.8660.7990．6770．58064431．2.65.6.2。54.2.54。4/m0.250.30.40.50.6≥0.71.31.251.21.151.051.038.4m×8.4m112、、。5.1.13.2.3-13.2.8、、。。2.45。1/kN/m2515×0.98=14.715×0.98=14.715×0.98=14.7135×1.4=4920×1.4=2820×1.4=2815×0.5=7.515×0.5=7.515×0.5=7.513520205。1.0ψq。41。。28.4m×8.4m、8SAP2000。。315。45123、30.0%52.5%52.5%21.4%37.5%37.5%。1GB50009—2012S．2012．2M．2003．3··M．2009．4．J．20114131-6．5CECS1902005S．2005．266100、。。S1S227m。T13°。。、。1．M．1993．74