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HongKong-Zhuhai-MacaoBridge;Contents;3.工程总体方案;1.BriefIntroduction;Twoartificialislands
Animmersedtubetunnel
TheY-shapedbridge;Totallenght:
49.97kilometers
Underwatertunnel:
6.7kilometers
Bridgeoverthesea:
23kilometers
;1.thelifespanofthebridgeissetat120years.
2.Itreportedlycanstandmagnitude-8earthquake,scale-16typhoonaswellasthecollisionwitha300,000-tonship;;;;TheEastIslandhas59roundsteelcylinders圆钢筒.
TheWestIslandhas61roundsteelcylinders.
Thediameterofasinglecylinderis22.0m,andthecylinderwallis16mmthick.
Theheightofroundsteelcylinderis40.5mto50.5m.
Theroundsteelcylinderweighs445tto507t.;4.TheImmersedTubeTunnel;Thewaterresistanceratiomustbelimitedto10%topreventaccumulationofsedimentattheLingdingyangChannel,otherwiseitwillimposeseriousimpactonthePearlRiverflowpathandflood-dischargecapacity,accordingtoagovernmentreport.Duetothelongdistancesbetweenthecities,theprojectisactuallyaseriesofbridgesandtunnels,connectedbyartificialislands,thiswasthefirsttimeChinahasbuiltanimmersedtubetunnel(沉管隧道)inopenwaters.
The33tubeswillcomposea5.6-kilometerimmersed-tubetunnel,whichisdesignedtobeanimportantpartofthebridge.Eachofthetube,withaweightof80,000tonsandalengthof180meters,takesabouttwomonthstobuild.;5.TheSignificances;TheEnd!
Thanksforyourattention!
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