Zhengzhou suburb railway (metro line 2 south airport line), from south 4th ring road station, stop at zhengzhou station, 41.16 km, the elevated line is about 15.7 kilometers long.
- engineering characteristics
Span beam model for the u-shaped girder, the line variety (31 m, 27.5 m, 25 meters, 20 meters);
Line the minimum curve radius of 250 meters;Single beam section for non-uniform beam type (horizontal width change).