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??(jie)構??(gou)?。??其??(qi)中??(zhong)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)?。 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)??，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??(da)155米?(mi)的??(de)SWDM800大??(da)型??(xing)旋??(xuan)挖??(wa)鉆??(zuan)機?(ji)??，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)??。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??(dao)管??(guan)提??(ti)前??(qian)在?(zai)相??(xiang)鄰?(lin)孔??(kong)預?(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??(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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責編：楊之光
審核：吉尼
責編：呂程平