一、概述 重庆市嘉陵江大桥是一座大型城市公路桥,全桥长600米。其正桥为钢桁架结构,长384米,分为五孔。下部墩台是重力式,基础在常年低水位以下的仅中间二、三号墩。二号墩是矩形钢筋混凝土沉井基础,因施工将井壁炸裂后改为沉箱法施工,井内浇筑混凝土嵌入基岩 First, an overview Chongqing Jialing River Bridge is a large urban highway bridge, the bridge is 600 meters long. The bridge is a steel truss structure, 384 meters long, divided into five holes. The lower piers are gravitational, with only the middle two and three pier below the perennial low water level. Pier 2 is a rectangular reinforced concrete caisson foundation, due to the construction of the wall after the burst instead of caisson method of construction, well-poured concrete embedded in bedrock