How are bridges categorized?

1. Small bridges: 8 meters ≤ total length of the multi-hole span ≤ 300 meters, 5 & lt; single-hole span & lt; 20 meters

2. Medium bridges: 30 meters & lt; total length of the multi-hole span & lt; 100 meters, 20 ≤ single-hole span & lt; 40 meters

3. Large bridges: total length of the multi-hole span ≥ 100 meters, single-hole span ≥ 40 meters

4. . Bridge: multi-hole span length ≥ 500 meters, single-hole span ≥ 100 meters

Expanded:

I. Bridges are divided according to the force characteristics, there are five basic types of girder bridges, arch bridges, rigid frame bridges, suspension bridges, and combined system bridges (cable-stayed bridges).

Second, the length of classification

1, according to the total length of the multi-hole span: special bridge (L>1000m); bridge (100m ≤ L ≤ 1000m); bridge (30m<L<100m); small bridge (8m ≤ L ≤ 30m)

2, according to a single hole span: special bridge (Lk>150m); Bridge (40m<Lk≤150m); middle bridge (20m≤Lk≤40m); small bridge (5m≤Lk<20m).

References:

Baidu Encyclopedia - Bridges