中国特高压输电线路杆塔基础关键技术研究ppt课件

ChinastartedtheUHVtransmissionstudysince1986.Somesubjectresearchesandachievementhavebeendevelopedsincethen.中国对特高压输电技术研究始于20世纪80年代，取得了一批重要科研成果。Attheendof2004,theStateGridCorporationofChina(SGCC)startedresearchesonkeytechnologyofUHV,includingpowersystemanalysisofUHVAC斜掏挖基础既具有直掏挖原状土基础的工程特性，又具有斜柱插入式基础主柱坡度与塔腿主材坡度一致的结构优点，可有效改善基础受力状态，提高基础稳定性。,Full-scaletestofIMDBEFforUHV斜掏挖基础,Typicalfoundationtypesandschemes基础型式及其工程技术方案,Rockanchorfoundation岩石基础,Rockanchorfoundationtypeisthebestchoiceinthelightweatheredrocksubsoilinmountainousarea.在微风化和中等分化的岩石地基可因地制宜采用锚桩基础（直锚式和群锚式）和嵌固式基础,rockanchorfoundation岩石基础,泥沼、河网、塘地等地区和大跨越工程,RecommendedFoundationType:Pillfoundation、Micropilefoundation,FoundationsinMoor,rivernetwork,wetlandsareas,largecrossingtransmissionline,推荐型式：常规灌注桩基础、微型桩基础,Typicalfoundationtypesandschemes基础型式及其工程技术方案,Pilefoundation桩基础,Commonpilefoundation常规桩基础,Micropilefoundation微型桩基础,Typicalfoundationtypesandschemes基础型式及其工程技术方案,Technicalschemeofunequaltowerleglengthwithunequalfoundationheight斜坡地形全方位铁塔长短腿和不等高基础设计,Foundationonslopingground斜坡地形杆塔基础,Designmodelanddamagestyle计算方法和破坏模式,Technicalscheme技术方案,Typicalfoundationtypesandschemes基础型式及其工程技术方案,AccordingtogeographicalfeaturesofenergysourcesandloadsinChina,itisunavoidablethattheUHVtransmissionlineswillpassthroughthevariouslymining-affectedareas,includingtypesoftobemined,beingminedandmined.Towerfoundationschemeanddesigningcountermeasuresshouldbemadetosatisfytherequirementsofthestabilityanddeformationregulation.特高压输电线路不可避免地需要经过煤矿规划区、开采及采空区等煤矿采动影响区。为减少煤矿采动影响区地表沉降、水平位移、倾斜等对线路基础的危害，可采用大板结构柔性基础以及联合式基础等方案。,Foundationsinmining-affectedareas煤矿采动影响区杆塔基础,Raftfoundation联合式基础,Flexibleconcretefoundation技术方案,Environmentalprotection杆塔基础水土保持设计,应充分重视环境保护问题的重要性，从杆塔基础方案选择、特殊土地基处理等方面制定并采取相应的技术措施，提高我国特高压工程建设环境保护水平。,SignificanceofenvironmentalprotectioninUHVtransmissionlineengineershouldbegivensufficientconsideration,technicalstepsoffoundationtypeselectionandspecialsoilfoundationtreatmentcanbetakentoimproveenvironmentalprotectioninUHVengineering.,Environmentalprotection杆塔基础水土保持设计,Styleandlayoutofthedrainsystem基面排水,Slopeprotection护坡,Summary小结,Nowadays,accordingtogeographicalfeaturesofenergysourcesandpowerloadsinChina,UHVtransmissionhasbecomethebestchoicebecauseChinesepowerdemandsincreaserapidlywithfasteconomicgrowth.BasedonthetowerfoundationpropertiesanditscurrentstatusinChina,theUHVtransmissionlinefoundationdesignmethods,mainprinciplesforfoundationtypeselectionandoptimization,calculationtheoryoftypicalfoundationtypesandschemes,environmentalprotectioncountermeasureshaveallbeenintroduced.AlltheseresearchresultsarerelevanttotheoptimaldesignoftheUHVtransmissionlinefoundationsinChina,