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杭州湾跨海大桥是国道主干线一同三线跨越杭州湾的便捷通道,大桥全长36km,其中中引桥、南引桥、水中低墩区、航道桥高墩区上部结构均为单跨70m预应力箱梁,全长18270m。70m箱梁设计跨度70m,单箱单室,斜腹板,主梁522片,底宽6.25m,顶宽15.8m,梁高4.0m,最大混凝土方量824.9m~3,自重2160t,单片主梁架设重量为全国之
Hangzhou Bay Cross-sea Bridge is the main thoroughfare of State Road along the Hangzhou Bay with three convenient lanes, the bridge a total length of 36km, of which Zhongyou Bridge, South Approach Bridge, low water area of pier, channel bridge high pier area superstructure are single span 70m prestressed box Beam, length 18270m. 70m box girder design span of 70m, single box single room, inclined web, the main beam of 522, the bottom width of 6.25m, the top width of 15.8m, beam height 4.0m, the maximum concrete side of 824.9m ~ 3, weight 2160t, The main girder erected the weight of the country