生产、生活中大量的液、气介质需要跨路过河通过管道进行输送，各种类型的系杆钢结构用以承载管道及输送介质产生的荷载。

通常可以采用桁架作为主要的承载结构，大跨度的也可以如图采用钢管系杆拱钢结构实现，根据需要设置检修通道。

Various types of tie rod steel structures are used to carry the load generated by the pipeline and the conveying medium since a large number of liquid and gas media in production and life need to be transported across the river through the pipeline.

Usually the truss can be used as the main bearing structure, and the large-span can also be realized by using the steel pipe tie arch steel structure as shown in the figure, and the maintenance channel can be set up according to the need.