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?(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)徑祝(jing)超??(chao)長??(chang)鉆??(zuan)孔??(kong)樁??(zhuang)??。 同??(tong)時??(shi)??，項??(xiang)目??(mu)建??(jian)設??(she)方??(fang)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)提??(ti)高??(gao)了??(le)施??(shi)工??(gong)效??(xiao)率??(lv)?。?
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