简介:Researchontheseismicvulnerabilityofbuildingstructuresisveryimportantfortheworkofearthquakedisasterpreparednessandmitigation.Onthebasisoftherelatedstudiesoveralongtime,thispaperprovidesseveralseismicvulnerabilitymatricesofbuildingstructureindifferentregionsofSichuanProvince,Pooranti-seismiccapabilityisoneofthefactorsresultingintheearthquakedisastersinthepast.Wecanreduceeconomiclossescausedbyearthquakethroughimprovingtheanti-seismicandpreventionlevelofbuildingstructuresinSichuanProvince.
简介:Thispaperpresentsafieldbasedmethodtodealwiththedisplacementofbuildingcluster,whichisdrivenbythestreetwidening.Thecompressofstreetboundaryresultsintheforcetopushthebuildingmovinginsideandtheforcepropagationisadecayprocess.Todescribethephenomenonabove,thefieldtheoryisintroducedwiththerepresentationmodelofisoline.OnthebasisoftheskeletonofDelaunaytriangulation,thedisplacementfieldisbuiltinwhichthepropagationforceisrelatedtotheadjacencydegreewithrespecttothestreetboundary.Thestudyoffersthecomputationofdisplacementdirectionandoffsetdistanceforthebuildingdisplacement.Thevectoroperationisperformedonthebasisofgradeandotherfieldconcepts.
简介:摘要:我国存在大批量的老旧建筑,出于安全考虑,这类房屋需要进行鉴定处理。这些房屋鉴定项目的特点是建筑数量大、建造年代久、结构类型杂、结构体系乱、鉴定工期紧等。所以在短时间内采用合理妥善的鉴定程序来完成批量建筑的鉴定工作,成了此类建筑鉴定处理的一种手段。本文从两个工程实例入手,分析比较单体建筑与批量建筑鉴定程序,为提高批量房屋鉴定的工作效率寻找到一个比较合理的处理办法。
简介:CongestioncontrolforpacketssentonanetworkisimportantforDAQsystemsthatcontainaneventbuilderusingswitchingnetworktechnologies.QualityofService(QoS)isatechniqueforcongestioncontrol.RecentLinuxreleasesprovideQoSinthekerneltomanagenetworktraffic.Wehaveanalyzedthepacket-lossandpacketdistributionfortheeventbuilderprototypeoftheAtlasTDAQsystem.WeusedPC/LinuxwithGigabitEthernetnetworkasthetestbed.TheresultshowedthatQoSusingCBQandTBFeliminatedpacketlossonUDP/IPtransferwhiletheUDP/IPtransferinbesteffortmadelotsofpacketloss.TheresultalsoshowedthattheQoSoverheadwassmall.WeconcludedthatQoSonLinuxperformedefficientlyinTCP/IPandUDP/IPandwillhaveanimportantroleoftheAtlasTDAQsystem.
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