韩国钢桥结构实例介绍-张丞弼

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1、HighLevelForumonSteelBridgeDesign,China,‘10.6.19~20KoreanPractice-SteelBridgeDetails2010.6.20Sung-PilChangEvolutionofBridgesinKoreavOutstandingdevelopmentintheKoreanbridgetechnologywithinaveryshortperiodof40years2GeographicalConditionsvKoreanPeninsula:70%ofmountainousar

2、eavPeninsulasurroundedbyseaon3sidesn3174islands(3.80%oftheterritory,population:0.65%)vImperativeneedforbridgestostrengthentransportationnetworkandpromotebalanced-regionaldevelopment3ContentsHistoryofsteelbridgesinKoreaHighperformancesteelforbridgesinKoreaCoalbrookdalebr

3、idge(1779,UK)Thedawningperiod(1900-1950)vLearninghowtodesignsteelbridgesfromtheforeignexperts,especiallyfromtheJapaneseengineers.vThefirstmodernsteelbridgewasbuiltin1900.vThefirststeelarchbridgewasbuiltin1937.RailroadbridgeonHanriver(1900)HighwaybridgeonHanriver(1937)5T

4、heKoreanwarandreconstruction(1950-1969)vTheKoreanwarbrokeoutin1950andendedwhenthearmisticewassignedin1953.vMostoftheindustrialfacilitiesincludingbridgesweredestroyedduringthewar,andthedestroyedbridgeswerereconstructeduntilupto1969.ThedestroyedrailroadbridgeonHanriver6In

5、dustrialization(1970-1980)vFromthebeginningof1970swhentheaftereffectoftheKoreanwarwasslowlyrecovered,theconstructionsofbridgesstartedfortheeconomicdevelopment.vThemajortypeofhighwaybridgeswasrolledbeambridges.7Industrialization(1970-1980)vThesteelbridgetechnologyinKorea

6、wasabruptlyimprovedaftercompletionofthefirststeelmillcompany,POSCO(PohangIron&SteelCompany)in1968.vTheweldedplategirderbridgebegantoprevailfromtheearly1970s.vTheSung-subridgecompletedin1979andtheSung-sanbridgebuiltin1980werethetypicalbridgeswhichareerectedwiththeweldeds

7、teelplateproducedbyPOSCO.Sung-subridge(1979)Sung-sanbridge(1980)NightviewofPOSCO8Adaptingadvancedtechnology(1980-1990)vAftergettingenoughexperienceinbridgedesignandconstructionin1970s,Koreangovernmentencouragedtoimportadvancedforeignbridgetechnology.Busanbridge(1981)Jin

8、do1bridge(1984)Dolsanbridge(1984)Wando2bridge(1985)Jeodobridge(1987)9Thecostofindustrialization(collapseofbrid