杭州钱塘江江东大桥总体设计

江东大桥(钱江九桥)位于杭州市区的东北角,西起下沙,东接萧山,属城市快速路。桥址附近有钱江观潮,对桥梁景观要求较高。该处江面宽约2.1km,处于动力条件较为复杂的钱塘江河口段的中间。河床底面冲淤剧烈。跨江桥梁长约2253m,主桥结构为两座自锚式悬索桥和一座预应力混凝土刚构桥,江中非通航孔桥为预应力混凝土连续梁桥。通航孔自锚式悬索桥造型独特,寓意钱江帆影,其主跨260m,采用独柱桥塔、分离式钢箱加劲梁、空间缆索、边跨不设吊索,这种悬索桥型式在国内、外尚无先例。本文着重介绍了江东大桥的设计构思、施工特点。

Hangzhou Qiantang River Jiangdong bridge overall design

Jiangdong Bridge (Qianjiang Nine Bridge) is located in the northeast corner of Hangzhou city, west Xiasha, east Xiaoshan, is an urban express road. There is Qian River tide watching near the bridge site, which requires higher bridge landscape. The river is 2.1km wide and located in the middle of the estuary of Qiantang River with complicated dynamic conditions. The bottom of the river bed is washed and silted violently. The length of the bridge is about 2253m. The main bridge structure is two self-anchored suspension Bridges and one prestressed concrete rigid frame bridge. The non-navigable bridge in the river is a prestressed concrete continuous beam bridge. The self-anchored suspension bridge with navigable holes is unique in shape, meaning "Qian Jiang sailing shadow". Its main span is 260m, and it adopts single-column bridge tower, separated steel box stiffened beam, space cable, and side span without sling. This type of suspension bridge has no precedent in China and abroad. This paper mainly introduces the design conception and construction characteristics of Jiangdong Bridge.