乘坐北京地铁13号线或往返于北京与包头之间的人们又有了一座建筑艺术品可以欣赏。日前,华北地区体量最大的混凝土斜拉桥、北京最高斜拉桥——上地铁路立交桥88根斜拉索全部张拉完成,一把巨大的“竖琴”完整呈现出来。该桥为单塔斜拉结构,主跨230米,副跨198米,连续跨越既有线路京包铁路、地铁13号线以及在建工程京张城际铁路,桥面宽35.5米,主塔高99米,最大单根缆索重27吨,长222米。在施工中,北京建工研究院突破性地使用了1500吨级的张拉设备,创国内预应力千斤顶之最。由于拉索规格大,索头与索管间缝隙仅有7.5毫米,整个挂索 People on the 13th line of the Beijing Subway or between Beijing and Baotou have another architectural artwork to enjoy. A few days ago, the largest concrete cable-stayed bridge in North China, Beijing’s highest cable-stayed bridge - on the subway overpass 88 cable tensioned all completed, a huge “harp” complete. The bridge is a single tower cable-stayed structure, with a main span of 230 meters and a secondary span of 198 meters. It continuously extends over the existing lines of Beijing-Baoan Railway, Metro Line 13 and the Beijing-Zhangjing Intercity Railway under construction. The bridge deck is 35.5 meters wide and the main tower 99 meters high, the largest single cable weighs 27 tons, 222 meters long. In the construction, Beijing Construction Research Institute groundbreaking use of 1,500 tons of tensioning equipment, creating the most prestressed jack. As the cable specifications, the cable between the cable head and only 7.5 mm gap, the entire cable