三九養(yǎng)生堂記者 鄧肯·蓋伊 報道
精彩| 杭??(hang)州??(zhou)灣??(wan)跨??(kua)海??(hai)鐵??(tie)路??(lu)橋?(qiao)是??(shi)南??(nan)通??(tong)至?(zhi)寧??(ning)波??(bo)高?(gao)鐵??(tie)關??(guan)鍵??(jian)控?(kong)制??(zhi)性??(xing)工?(gong)程??(cheng)??，采??(cai)用??(yong)無??(wu)砟??(zha)軌?(gui)道??(dao)??，設??(she)計??(ji)時??(shi)速??(su)350公??(gong)里??(li)??，全??(quan)長??(chang)29.2公??(gong)里??(li)??。??其??(qi)中??(zhong)??，杭?(hang)州??(zhou)灣??(wan)跨??(kua)海??(hai)鐵?(tie)路??(lu)橋??(qiao)北??(bei)航??(hang)道??(dao)橋??(qiao)全??(quan)長??(chang)932.7米??(mi)??，共??(gong)有??(you)北??(bei)端??(duan)8號??(hao)主??(zhu)塔??(ta)、南??(nan)端??(duan)9號??(hao)主??(zhu)塔??(ta)共??(gong)兩??(liang)個??(ge)主??(zhu)塔??(ta)??，均??(jun)采??(cai)用??(yong)曲??(qu)線?(xian)H形秘(xing)鋼??(gang)筋??(jin)混?(hun)凝??(ning)土?(tu)結?(jie)構??(gou)??。8號??(hao)主?(zhu)塔?(ta)高??(gao)200米??(mi)??，共??(gong)設??(she)52根??(gen)直?(zhi)徑??(jing)2.5米?(mi)鉆??(zuan)孔??(kong)灌??(guan)注??(zhu)樁??(zhuang)基??(ji)礎??(chu)??，采??(cai)用??(yong)梅??(mei)花?(hua)式??(shi)布??(bu)置??(zhi)??，最??(zui)大?(da)樁??(zhuang)長??(chang)129.5米??(mi)??，鉆??(zuan)孔??(kong)深??(shen)度?(du)約??(yue)151米?(mi)??，為??(wei)大??(da)直??(zhi)徑??(jing)超?(chao)長??(chang)鉆??(zuan)孔??(kong)樁??(zhuang)???！ ?jù)??(ju)了??(le)解??(jie)??，杭??(hang)州??(zhou)灣??(wan)是??(shi)世??(shi)界??(jie)三??(san)大??(da)強??(qiang)潮??(chao)海??(hai)灣??(wan)之??(zhi)一??(yi)??，海??(hai)域??(yu)寬??(kuan)、風??(feng)大?(da)、浪??(lang)高??(gao)、潮??(chao)差??(cha)大??(da)、流?(liu)急??(ji)??，建??(jian)橋??(qiao)條?(tiao)件??(jian)受?(shou)水??(shui)文??(wen)、氣?(qi)象??(xiang)、地??(di)質??(zhi)等??(deng)自??(zi)然??(ran)環(huán)??(huan)境??(jing)的??(de)影??(ying)響??(xiang)大??(da)??。??特??(te)別??(bie)是??(shi)8號??(hao)墩?(dun)所??(suo)處??(chu)海??(hai)域??(yu)地??(di)質??(zhi)條??(tiao)件??(jian)復??(fu)雜??(za)??，多??(duo)為?(wei)流??(liu)塑??(su)層??(ceng)或??(huo)軟??(ruan)塑?(su)層??(ceng)??，成??(cheng)孔??(kong)及??(ji)成??(cheng)樁??(zhuang)難??(nan)度?(du)大??(da)??。為??(wei)確??(que)保??(bao)鉆??(zuan)孔??(kong)樁??(zhuang)施??(shi)工??(gong)進??(jin)度??(du)和?(he)成??(cheng)孔??(kong)質??(zhi)量??(liang)??，中??(zhong)鐵??(tie)大??(da)橋??(qiao)局??(ju)研??(yan)制??(zhi)了??(le)最??(zui)大??(da)鉆??(zuan)孔??(kong)直??(zhi)徑??(jing)4.5米??(mi)??，鉆??(zuan)孔??(kong)深??(shen)度??(du)可??(ke)達??(da)155米??(mi)的?(de)SWDM800大??(da)型??(xing)旋??(xuan)挖?(wa)鉆??(zuan)機??(ji)??，使??(shi)用??(yong)該??(gai)設??(she)備??(bei)與??(yu)XR580旋??(xuan)挖??(wa)鉆??(zuan)機??(ji)接??(jie)力?(li)鉆??(zuan)進??(jin)成??(cheng)孔??(kong)??，并??(bing)配??(pei)備??(bei)相??(xiang)應??(ying)的?(de)成??(cheng)孔?(kong)設??(she)備??(bei)??。
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