江家渡大桥是福宁高速公路福安连接线上一座较有特点的桥梁,主桥为13×30m先简支后连续刚构预应力混凝土T型组合梁桥,引桥为现浇钢筋混凝土弯斜异型无梁连续板桥。本文对主桥及引桥设计的关键技术问题进行了研究,提出了先简支后连续混凝土桥梁设计中需要特别注意的几点意见,揭示了无梁连续板的应力分布规律及配筋原则。 Jiangjiadu Bridge is a more characteristic bridge on the Fu An Expressway in Fuan Expressway. The main bridge is a 13 × 30m T-shaped composite girder with simply supported and rigid frame prestressed concrete. The approach bridge is cast-in-place reinforced concrete Shaped non-beam continuous plate bridge. In this paper, the key technical issues of the design of the main bridge and the approach bridge are studied, and some opinions that need special attention in the design of the first simply supported continuous concrete bridge are put forward, and the stress distribution rules and the principle of reinforcement are revealed.