《鋼結構安裝》課件-6.9 索結構應用技術

索結構應用技術Cablestructureapplicationtechnology首先確定索結構體系，包括結構的形狀、布索方式、傳力路徑和支承位置等；Firstly,thecablestructuresystemisdetermined,includingtheshapeofthestructure,thewayofthecable,theforcetransmissionpathandthesupportingposition.其次采用非線性分析法進行找形分析，確定設計初始態(tài)，并通過施加預應力建立結構的強度與剛度，進行索結構在各種荷載工況下的極限承載能力設計與變形驗算；Secondly,thenonlinearanalysismethodisusedtofindtheshapetodeterminetheinitialstateofthedesign,andthestrengthandstiffnessofthestructureareestablishedbyapplyingprestress,andtheultimatebearingcapacitydesignanddeformationtestofthecablestructureundervariousloadconditionsarecarriedout.索結構的設計Designofcablestructure索結構應用技術Cablestructureapplicationtechnology然后進行索具節(jié)點、錨固節(jié)點設計；Thentheriggingnodeandanchornodedesignarecarriedout;最后對支承位置及下部結構設計。Finally,thesupportpositionandsubstructurearedesigned.索結構的設計Designofcablestructure分批張拉法Batchtension分級張拉法Gradedtension索結構應用技術Cablestructureapplicationtechnology將不同的拉索進行分批，執(zhí)行合適的分批張拉順序，以有效的改善張拉施工過程中結構中的索力分布，保證張拉過程的安全性和經(jīng)濟性。Differentcablesaredividedintobatches,andtheappropriatebatchtensionsequenceisimplementedtoeffectivelyimprovethecableforcedistributioninthestructureduringthetensionconstructionprocessandensurethesafetyandeconomyofthetensionprocess.對于索力較大的結構，分多次張拉將拉索中的預應力施加到位，可以有效的調節(jié)張拉過程中結構內力的峰值。Forstructureswithlargecableforces,theprestressinthecableisappliedinplaceinmultipletensions,whichcaneffectivelyadjustthepeakoftheinternalforceofthestructureduringthetensioningprocess.索結構的施工和防護Constructionandprotectionofcablestructures索結構應用技術Cablestructureapplicationtechnology拉索具有較高的制作精度Thecablehashighproductionaccuracy1對拉索施工過程中的夾持和錨固也提出了較高的要求Highrequirementsarealsoplacedonclampingandanchoringduringcableconstruction2索結構的施工和防護Constructionandprotectionofcablestructures采取可靠的防水、防腐蝕和防老化措施；Takereliablewaterproof,anti-corrosionandanti-agingmeasures;鋼索上應涂敷防火涂料以滿足防火要求；Thesteelcableshouldbecoatedwithfireproofpainttomeetthefireprotectionrequirements;定期檢查拉索在使用過程中是否松弛，并采用恰當?shù)拇胧┯枰詮埦o。Regularlycheckwhetherthecableislooseduringuseanduseappropriatemeasurestotightenit.寶安體育場屋蓋結構Bao'anstadiumroofstructure索結構的施工和防護Constructionandprotectionofcablestructures索結構應用技術Cablestructureapplicationtechnology拉索結構施工Cablestructureconstruction低空無應力組裝Lowaltitudestress-freeassembly1整體提升牽引Overallliftingtraction2分批張拉錨固Tensionanchoringinbatches3索結構應用技術Cablestructureapplicationtechnology（1）低空無應力組裝Lowaltitudestress-freeassembly拉索在進行低空無應力組裝的時候，采用全過程索體保護，避免損傷；Whenthecableisassembledatlowaltitudewithoutstress,thewholeprocessofcablebodyprotectionisadoptedtoavoiddamage;組裝前完善各項材料驗收、培訓交底、安防措施等工作；Improvetheacceptanceofvariousmaterials,trainingdisclosure,securitymeasuresandotherworkbeforeassembly;按照總體原則組裝，無應力組裝、自內向外、自上而下對稱安裝、嚴格控制拉索長度和索夾位置；Assembledaccordingtotheoverallprinciple,stress-freeassembly,symmetricalinstallationfrominsidetooutside,toptobottom,strictcontrolofcablelengthandcableclampposition;索結構應用技術Cablestructureapplicationtechnology（1）低空無應力組裝(1)Low-altitudestress-freeassembly按照總體施工順序施工Constructioniscarriedoutinaccordancewiththeoverallconstructionsequence拉索展開Thecableunfolds鋪設環(huán)索Laytheringcable鋪設徑向索Laytheradialcable安裝牽引設備和工裝索Installationoftowingequipmentandtoolingcables安裝索頭Installthecablehead安裝環(huán)索連接夾具Installtheringcableattachmentfixture準備牽引提升Readyfortractionlifting索結構應用技術Cablestructureapplicationtechnology（1）低空無應力組裝Lowaltitudestress-freeassembly索結構應用技術Cablestructureapplicationtechnology索結構應用技術Cablestructureapplicationtechnology（2）索網(wǎng)的牽引提升(2)Tractionliftingofcablenet索網(wǎng)牽引提升施工工序Cablenettractionliftstheconstructionprocess搭設操作平臺Setupanoperatingplatform安裝和調試牽引設備Installationandcommissioningoftractionequipment初步牽引提升Preliminarytractionlift繼續(xù)牽引提升Continuethetractionlift第一批拉索錨固就位Thefirstcableswereanchoredinplace正式牽引提升Formaltractionlift第二批拉索錨固就位Thesecondbatchofcablesisanchoredinplace繼續(xù)牽引提升Continuethetractionlift第三批拉索錨固就位Thethirdbatchofcableswasanchoredinplace（2）索網(wǎng)的牽引提升(2)Tractionliftingofcablenet索結構應用技術Cablestructureapplicationtechnology分級加載試提升Stepwiseloadingtestpromotion初始牽引提升Initialtractionlift通過試提升過程中對提升索網(wǎng)、外圍結構以及牽引提升設備系統(tǒng)和工裝的觀察和監(jiān)測，確認符合模擬工況計算和設計條件，保證牽引提升過程的安全。Throughtheobservationandmonitoringoftheliftingcablenetwork,peripheralstructure,tractionliftingequipmentsystemandtoolingduringthetrialliftingprocess,itisconfirmedthatthesimulationconditioncalculationanddesignconditionsaremet,andthesafetyofthetractionliftingprocessisguaranteed.各牽引點提升器伸缸壓力應緩慢分級增加，最初加壓為所需壓力的40%，60%，80%，90%，在一切都穩(wěn)定的情況下，可加到100%，即索網(wǎng)試提升離開環(huán)索組裝胎架。Theextensionpressureofthelifterateachtractionpointshouldbeslowlyincreasedinstages,initiallypressurizedto40%,60%,80%,90%oftherequiredpressure,andinthecaseofeverythingisstable,itcanbeincreasedto100%,thatis,thecablenettestliftingawayfromtheringcableassemblytireframe（2）索網(wǎng)的牽引提升Tractionliftingofcablenets索結構應用技術Cablestructureapplicationtechnology索網(wǎng)與環(huán)梁連接就位后，牽引提升設備卸載和拆除。啟動液壓牽引提升系統(tǒng)，各吊點卸載時也分級卸載，依次為40%，60%，80%，在確認各部分無異常的情況下，可繼續(xù)卸載至100%，使牽引工裝索不再受力。Afterthecablenetisconnectedtotheringbeaminplace,thetractionliftingequipmentisunloadedandremoved.Startthehydraulictractionliftingsystem,eachliftingpointis