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又一项超级工程震惊世界!这座桥创下无数全球之最

来源: 南方日报网络版     时间: 2018年12月10日 03:26:53
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(  又)(一)(项)(超)(级)(工)(程)(震)(惊)(世)(界)(!这)(座)(桥)(创)(下)(无)(数)(全)(球)(之)(最)(
  (央)(视)(财)(经)(讯)()29日)(凌)(晨)(,在)(伶)(仃)(洋)(上)(空)(,一)(座)(连)(通)(港)(珠)(澳)(三)(地)(,世)(界)(上)(最)(长)(的)(跨)(海)(大)(桥)(的)(桥)(梁)(主)(体)(工)(程)(合)(龙)(,这)(为)(港)(珠)(澳)(大)(桥)(贯)(通)(奠)(定)(了)(坚)(实)(的)(一)(步)(。港)(珠)(澳)(大)(桥)(的)(建)(设)(历)(程)(已)(经)(过)(去)(了)(13年)(,投)(资)(超)(过)(1000亿)(元)(。大)(桥)(建)(成)(后)(,将)(连)(接)(香)(港)(、珠)(海)(和)(澳)(门)(三)(地)(,大)(大)(缩)(短)(三)(地)(间)(公)(路)(交)(通)(的)(时)(间)(,以)(从)(香)(港)(开)(车)(到)(珠)(海)(为)(例)(,时)(间)(将)(从)(三)(、四)(小)(时)(缩)(短)(到)(几)(十)(分)(钟)(,在)(促)(进)(港)(澳)(、珠)(三)(角)(地)(区)(经)(济)(发)(展)(上)(,港)(珠)(澳)(大)(桥)(将)(具)(备)(重)(要)(的)(战)(略)(意)(义)(。
  港)(珠)(澳)(大)(桥)(主)(体)(桥)(梁)(成)(功)(合)(龙)(
  6月)(28日)(下)(午)(,运)(载)(着)(最)(后)(一)(节)(钢)(箱)(梁)(的)(浮)(运)(船)(慢)(慢)(驶)(入)(港)(珠)(澳)(大)(桥)(的)(施)(工)(海)(域)(。晚)(上)(十)(点)(,浮)(运)(船)(在)(预)(定)(位)(置)(抛)(锚)(,施)(工)(人)(员)(开)(始)(将)(大)(型)(吊)(机)(的)(钢)(索)(固)(定)(在)(钢)(箱)(梁)(上)(。
  晚)(上)(十)(一)(点)(半)(左)(右)(,这)(个)(重)(约)(180吨)(的)(钢)(箱)(梁)(缓)(缓)(从)(浮)(云)(船)(上)(吊)(起)(,慢)(慢)(地)(向)(合)(龙)(口)(靠)(近)(,经)(过)(近)(一)(个)(小)(时)(的)(起)(吊)(,钢)(箱)(梁)(到)(达)(嵌)(入)(合)(龙)(口)(的)(位)(置)(,此)(时)(,也)(是)(钢)(箱)(梁)(的)(吊)(装)(难)(度)(最)(大)(的)(时)(候)(。
  港)(珠)(澳)(大)(桥)(管)(理)(局)(工)(程)(管)(理)(部)(副)(部)(长)(景)(强)(:钢)(箱)(梁)(上)(来)(以)(后)(,合)(龙)(口)(两)(侧)(的)(焊)(缝)(是)(不)(能)(超)(过)(两)(厘)(米)(的)(,要)(控)(制)(在)(两)(厘)(米)(以)(内)(,这)(就)(要)(求)(我)(们)(对)(周)(围)(环)(境)(的)(温)(度)(,以)(及)(我)(们)(施)(工)(过)(程)(中)(温)(度)(的)(误)(差)(,要)(有)(一)(个)(准)(确)(的)(预)(测)(和)(测)(量)(。
  钢)(箱)(梁)(在)(进)(入)(合)(龙)(口)(之)(前)(,经)(过)(短)(时)(间)(的)(细)(微)(调)(整)(,精)(准)(地)(嵌)(入)(了)(合)(龙)(口)(。
  经)(过)(一)(个)(小)(时)(左)(右)(的)(紧)(张)(施)(工)(,港)(珠)(澳)(大)(桥)(主)(体)(桥)(梁)(的)(最)(后)(一)(片)(钢)(箱)(梁)(已)(经)(成)(功)(吊)(装)(,根)(据)(设)(计)(要)(求)(,钢)(箱)(梁)(吊)(起)(来)(之)(后)(,它)(两)(边)(缝)(隙)(的)(距)(离)(要)(控)(制)(在)(两)(厘)(米)(之)(内)(,两)(厘)(米)(大)(概)(是)(怎)(样)(的)(距)(离)(呢)(?两)(根)(手)(指)(都)(不)(能)(够)(放)(到)(缝)(隙)(里)(面)(,我)(们)(知)(道)(,两)(根)(手)(指)(大)(概)(就)(是)(两)(厘)(米)(的)(宽)(度)(,也)(就)(是)(说)(,这)(一)(次)(的)(吊)(装)(是)(一)(次)(非)(常)(精)(确)(、非)(常)(成)(功)(的)(吊)(装)(。
  江)(海)(直)(达)(船)(航)(道)(桥)(项)(目)(经)(理)(余)(立)(志)(:今)(天)(的)(起)(吊)(过)(程)(是)(相)(当)(顺)(利)(的)(,因)(为)(第)(一)(,整)(个)(过)(程)(没)(有)(磕)(碰)(的)(声)(音)(,第)(二)(,箱)(梁)(的)(顶)(面)(进)(入)(我)(们)(合)(龙)(口)(的)(时)(候)(,我)(们)(就)(做)(了)(一)(下)(微)(调)(,把)(两)(边)(的)(距)(离)(对)(好)(,起)(吊)(过)(程)(是)(非)(常)(平)(顺)(的)(,包)(括)(这)(个)(宽)(度)(跟)(我)(们)(之)(前)(计)(算)(的)(理)(论)(数)(据)(都)(比)(较)(吻)(合)(。
  6月)(29日)(上)(午)(,经)(过)(现)(场)(检)(测)(,钢)(箱)(梁)(吊)(装)(的)(各)(项)(技)(术)(指)(标)(达)(到)(设)(计)(要)(求)(。技)(术)(人)(员)(开)(始)(对)(合)(龙)(口)(位)(置)(的)(缝)(隙)(进)(行)(焊)(接)(,港)(珠)(澳)(大)(桥)(管)(理)(局)(局)(长)(正)(式)(宣)(布)(,港)(珠)(澳)(大)(桥)(主)(体)(桥)(梁)(成)(功)(合)(龙)(。
  探)(秘)(港)(珠)(澳)(大)(桥)(:可)(抵)(御)(16级)(台)(风)(
  横)(跨)(三)(地)(的)(港)(珠)(澳)(大)(桥)(,主)(体)(桥)(梁)(的)(施)(工)(时)(间)(就)(长)(达)(7年)(。那)(么)(,这)(么)(大)(的)(一)(座)(海)(上)(桥)(梁)(,它)(怎)(么)(抵)(抗)(海)(水)(的)(腐)(蚀)(,又)(是)(否)(能)(抵)(抗)(台)(风)(呢)(?带)(着)(诸)(多)(疑)(问)(,央)(视)(财)(经)(记)(者)(登)(上)(了)(港)(珠)(澳)(大)(桥)(进)(行)(探)(秘)(。
  记)(者)(在)(桥)(上)(看)(到)(,由)(于)(港)(珠)(澳)(大)(桥)(刚)(刚)(完)(成)(合)(龙)(,用)(于)(吊)(装)(钢)(箱)(梁)(的)(设)(备)(仍)(在)(桥)(面)(上)(,此)(外)(,有)(不)(少)(工)(人)(正)(在)(进)(行)(桥)(面)(铺)(装)(等)(工)(作)(。记)(者)(发)(现)(,这)(座)(桥)(梁)(的)(材)(料)(绝)(大)(部)(分)(是)(钢)(铁)(。
  港)(珠)(澳)(大)(桥)(管)(理)(局)(工)(程)(总)(监)(张)(劲)(文)(:我)(们)(常)(规)(的)(钢)(结)(构)(的)(桥)(梁)(,就)(是)(我)(们)(在)(城)(市)(里)(面)(能)(够)(看)(到)(的)(钢)(结)(构)(的)(桥)(梁)(,用)(钢)(量)(很)(多)(都)(是)(在)(两)(万)(吨)(左)(右)(,我)(们)(港)(珠)(澳)(大)(桥)(主)(体)(桥)(梁)(上)(部)(结)(构)(的)(用)(钢)(量)(是)(在)(42万)(吨)(,相)(当)(于)(4个)(鸟)(巢)(或)(者)(60个)(埃)(菲)(尔)(铁)(塔)(的)(用)(钢)(量)(。
  可)(以)(说)(,港)(珠)(澳)(大)(桥)(其)(实)(就)(是)(一)(座)(钢)(铁)(桥)(梁)(。不)(过)(,由)(于)(它)(所)(在)(的)(位)(置)(是)(在)(海)(面)(上)(,空)(气)(湿)(度)(大)(,加)(上)(海)(水)(本)(身)(具)(有)(腐)(蚀)(作)(用)(,这)(对)(钢)(铁)(来)(讲)(,可)(谓)(是)(致)(命)(的)(伤)(害)(。而)(这)(座)(桥)(的)(设)(计)(使)(用)(寿)(命)(是)(120年)(,那)(么)(,有)(哪)(些)(方)(式)(来)(保)(证)(桥)(梁)(不)(会)(被)(腐)(蚀)(坏)(呢)(?
  港)(珠)(澳)(大)(桥)(管)(理)(局)(工)(程)(总)(监)(张)(劲)(文)(:这)(个)(钢)(板)(你)(们)(看)(到)(的)(这)(一)(层)(不)(是)(最)(后)(的)(样)(子)(,我)(们)(要)(涂)(一)(层)(叫)(防)(水)(粘)(结)(层)(的)(东)(西)(,这)(一)(层)(是)(由)(3层)((油)(漆)()组)(成)(的)(,包)(括)(防)(水)(和)(粘)(结)(的)(作)(用)(,因)(为)(钢)(结)(构)(它)(非)(常)(怕)(渗)(水)(,因)(为)(渗)(水)(就)(会)(锈)(蚀)(,钢)(结)(构)(的)(寿)(命)(就)(不)(能)(保)(证)(,下)(面)(这)(一)(层)(就)(有)(很)(好)(的)(防)(水)(、避)(水)(性)(能)(。
  桥)(面)(在)(完)(成)(底)(部)(的)(涂)(装)(之)(后)(,施)(工)(人)(员)(还)(会)(在)(上)(面)(浇)(筑)(一)(层)(沥)(青)(混)(凝)(土)(,以)(保)(证)(车)(辆)(行)(驶)(在)(桥)(上)(的)(时)(候)(,保)(持)(足)(够)(的)(抓)(地)(力)(。此)(外)(,港)(珠)(澳)(大)(桥)(位)(于)(伶)(仃)(洋)(海)(面)(上)(,而)(这)(一)(地)(区)(是)(台)(风)(多)(发)(区)(,港)(珠)(澳)(大)(桥)(是)(否)(能)(够)(抵)(抗)(台)(风)(呢)(?
  港)(珠)(澳)(大)(桥)(管)(理)(局)(工)(程)(总)(监)(张)(劲)(文)(:我)(们)(这)(个)(项)(目)(设)(计)(的)(基)(本)(风)(速)(是)(47.6米)(每)(秒)(,极)(值)(风)(速)(是)(72米)(每)(秒)(,这)(个)(通)(俗)(一)(点)(,就)(是)(要)(抗)(16级)(台)(风)(。在)(桥)(梁)(里)(面)(,有)(一)(个)(阻)(尼)(器)(,这)(个)(阻)(尼)(器)(可)(以)(抑)(制)(桥)(梁)(的)(振)(动)(,在)(营)(运)(阶)(段)(,我)(们)(有)(一)(个)(健)(康)(检)(测)(系)(统)(,也)(有)(一)(个)(运)(营)(维)(护)(系)(统)(,可)(以)(很)(及)(时)(地)(测)(出)(风)(速)(。
  新)(闻)(链)(接)(
  规)(划)(建)(设)(历)(时)(13年)(
  随)(着)(主)(体)(桥)(梁)(的)(合)(龙)(,意)(味)(着)(港)(珠)(澳)(大)(桥)(,离)(正)(式)(开)(通)(,又)(迈)(进)(了)(关)(键)(的)(一)(步)(。那)(么)(,这)(座)(全)(世)(界)(最)(长)(的)(跨)(海)(大)(桥)(,究)(竟)(有)(多)(长)(,投)(资)(规)(模)(有)(多)(大)(?
  从)(2004年)(开)(始)(提)(出)(设)(计)(方)(案)(,到)(2011年)(开)(始)(动)(工)(建)(设)(,再)(到)(今)(天)(主)(体)(桥)(梁)(的)(合)(龙)(,港)(珠)(澳)(大)(桥)(的)(建)(设)(历)(程)(已)(经)(过)(去)(了)(13年)(,投)(资)(超)(过)(1000亿)(元)(。
  建)(成)(后)(的)(大)(桥)(,全)(长)(49.968公)(里)(,可)(分)(为)(桥)(梁)(工)(程)(和)(岛)(隧)(工)(程)(两)(大)(块)(,其)(中)(主)(体)(桥)(梁)(工)(程)(长)(达)(22.9公)(里)(,而)(岛)(隧)(工)(程)(由)(海)(底)(沉)(管)(隧)(道)(、东)(人)(工)(岛)(和)(西)(人)(工)(岛)(三)(大)(部)(分)(组)(成)(。建)(成)(后)(的)(港)(珠)(澳)(大)(桥)(,不)(仅)(将)(成)(为)(全)(球)(最)(长)(的)(跨)(海)(大)(桥)(,同)(时)(也)(拥)(有)(世)(界)(上)(最)(长)(的)(海)(底)(隧)(道)(。同)(时)(,大)(桥)(还)(将)(连)(接)(香)(港)(、珠)(海)(和)(澳)(门)(三)(地)(,在)(促)(进)(港)(澳)(、珠)(三)(角)(地)(区)(经)(济)(发)(展)(上)(,具)(备)(重)(要)(的)(战)(略)(意)(义)(。
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