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　　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)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)兩??(liang)個??(ge)主??(zhu)塔??(ta)??，均?(jun)采?(cai)用?(yong)曲??(qu)線??(xian)H形??(xing)鋼??(gang)筋??(jin)混??(hun)凝??(ning)土??(tu)結(jié)??(jie)構(gòu)??(gou)??。?其??(qi)中??(zhong)8號??(hao)主??(zhu)塔??(ta)高??(gao)200米??(mi)??，共??(gong)設(shè)??(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(chǔ)??(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)???！　?號??(hao)墩?(dun)所??(suo)處??(chu)海?(hai)域??(yu)地??(di)質(zhì)??(zhi)條??(tiao)件??(jian)復(fù)??(fu)雜??(za)?，成??(cheng)孔??(kong)及??(ji)成??(cheng)樁??(zhuang)難??(nan)度??(du)大??(da)??。??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(dá)??(da)155米??(mi)的??(de)SWDM800大??(da)型??(xing)旋??(xuan)挖??(wa)鉆??(zuan)機(jī)??(ji)?，與??(yu)XR580旋??(xuan)挖??(wa)鉆??(zuan)機(jī)??(ji)接??(jie)力??(li)鉆??(zuan)進(jìn)??(jin)成??(cheng)孔?(kong)?，并??(bing)配??(pei)備??(bei)相??(xiang)應(yīng)??(ying)的??(de)成??(cheng)孔??(kong)設(shè)??(she)備??(bei)??。同?(tong)時??(shi)優(yōu)??(you)化??(hua)施??(shi)工??(gong)工??(gong)序??(xu)?，采??(cai)用??(yong)主??(zhu)籠??(long)、導(dǎo)??(dao)管??(guan)提??(ti)前??(qian)在??(zai)相??(xiang)鄰??(lin)孔??(kong)預(yù)??(yu)拼?(pin)到??(dao)位??(wei)等??(deng)方??(fang)式??(shi)?，節(jié)??(jie)省??(sheng)了??(le)鋼??(gang)筋??(jin)籠??(long)和??(he)導(dǎo)??(dao)管??(guan)下??(xia)放??(fang)、拼??(pin)接??(jie)時??(shi)間??(jian)?，極??(ji)大??(da)地??(di)提??(ti)高??(gao)了??(le)施??(shi)工?(gong)效??(xiao)率??(lv)??。

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