简介:4月18日.中国建筑金属结构协会采暖散热器委员会和国家奥体中心的领导、媒体记者济济一堂,共同见证了采暖散热器行业又一重要意义的大事——宁波宁兴金海水暖器材有限公司与国家奥体中心签订《国家奥林匹克体育中心专用产品协议书》,金海采暖散热器系列产品成为奥体中心专用产品。
简介:Currently,thedesignpracticeofhighwaybridgesaroundtheworldaremovingtowardslimitstatesdesign,areliability-baseddesignprocedure.CanadianHighwayBridgeDesignCode(CHBDC)isthefirstdesigncodeentirelydevelopedbasedonlimitstatesdesignphilosophy,includingfoundationsandFRPcomponents.However,reliabilityofastructuredecreasesinserviceduetoenvironmentalattacksandmaterialdeteriorationsuchasfatigue,corrosionandmanyotherreasons.Therefore,thestructureshouldbeinspectedperiodically,andthereliabilityofthestructureshouldbeevaluatedaccordingtoitsageandfielddata.Ifitsreliabilityisreducedtoacertainlevel,arepairshouldbescheduledaswellassomepreventivemaintenancemeasuresshouldbeimplementedtopreventfurtherdeterioration.Recently,manyresearchworkshavebeenconductedtoinvestigatereliability-deteriorationmechanismsforeachtypeofinfrastructureanditscomponents,optimizetheinspectionandmaintenancestrategy,predictremainingservicelife,estimateitslifecyclecost.Thispaperisfocusedonthestudyofreliability-deteriorationmechanismsofslabonsteelgirderbridgesduetofatigueandcorrosionofsteelgirdersaswellascorrosionofreinforcementinthedeckslab.Exampleswillalsobegiventoillustratetheproposedlifecyclemanagementstrategyforcompositeslabonsteelgirderbridges.