沙埕湾跨海公路通道桥位及桥型方案比选

Scheme Comparison of Bridge Location and Bridge Type of Shacheng Gulf Expressway

沙埕湾跨海大桥为宁波至东莞高速公路福建省沙埕湾跨海公路通道的控制性工程。在建设条件适应性、工程经济技术、与路网合理衔接及服务功能的实现、运营管理及费用等方面,对跨海公路通道桥隧方案、桥位和桥型方案进行了详细的比选论证,最终选定在竹澳-青屿-阮家渡建设大桥跨越海湾,并确定主桥采用主跨550m双塔混合梁斜拉桥、引桥采用50m等截面连续箱梁作为大桥的推荐方案。

Shacheng Gulf Bridge is a critical project of Fujian Expressway crossing Shangcheng Bay which is sec-tion of expressway from Ningbo to Dongguan.Considering the adaptability of construction conditions,technology and economy,rationality of road net connection and realization of service function,operations management and cost,the bridge and tunnel scheme and the scheme of bridge location and bridge type have been analyzed.Even-tually the scheme of bridge crossing bay at the site of Zhuao-Qingyu-Ruanjiadu has been decided.The Recommen-ded scheme of bridge is a hybrid girder double pylons cable-stayed main bridge with a 550m main span and 50m equally cross-sectional continuous box beam approach spans.