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　　三九養(yǎng)生堂記者 鄧肯·蓋伊 報(bào)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(zhǎng)??(chang)932.7米??(mi)??，共??(gong)有??(you)北??(bei)端??(duan)8號(hào)?(hao)主??(zhu)塔??(ta)、南??(nan)端??(duan)9號(hào)?(hao)主??(zhu)塔??(ta)兩??(liang)個(gè)??(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(hào)??(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(zhǎng)??(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(zhǎng)??(chang)鉆??(zuan)孔??(kong)樁?(zhuang)???！　?號(hào)??(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(shí)?(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(shí)?(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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