一、概况正在施工中的西班牙卢纳·巴里奥斯桥是一座中跨440米的预应力混凝土斜拉桥。该桥建成后,其跨度超过目前跨度最大的钢斜拉桥—主跨404米,法国的圣·纳泽尔桥(Saint-Nazaire),成为最大跨度的斜拉桥。该桥预计1983年8月建成。目前,工程在南北两岸同时施工,其特点是利用平衡重桥台进行悬臂施工,从边跨向河中悬臂施工;塔基以上塔身的80％高度是用提升模板施工的。 I. Overview The Luna Barrios Bridge under construction in Spain is a prestressed concrete cable-stayed bridge spanning 440 meters. After its completion, the bridge spanned 404 meters, the largest span-steel cable-stayed bridge in the world. The Saint-Nazaire Bridge in France became the largest span cable-stayed bridge. The bridge is expected to be completed in August 1983. At present, the project is being constructed at the same time on both sides of the North and South Strait. Its characteristics are that it cantilever construction from the side span to the river by means of a balance weight abutment platform; and the height of 80% of the tower body above the tower foundation is constructed by raising the formwork.