At present, what method is used in the design of highway bridge steel structure? What aspects should be considered?

The current highway bridge steel structure design is implemented according to JTG highway steel structure bridge design specification D64-20 15.

The design method is as follows:

First, the whole part.

1. Choose the bridge form according to the determined bridge span, such as cable-stayed bridge, suspension bridge, arch bridge and truss bridge.

2. According to the bridge form, choose the beam type, such as steel plate beam, steel box beam, steel truss, steel tube structure, steel-concrete composite beam, etc.

3. According to the selected bridge type and beam segment type, select materials and design indexes;

4. Cable-stayed bridges and suspension bridges should also choose steel towers and cable systems;

5, the overall structure calculation.

Second, local

1. Joint design: welding, riveting and bolting;

2. Calculation of limit state of local bearing capacity;

3. Correct use of local limit state calculation

Three. subsidiary

1, steel bridge deck pavement design;

2. Protection and maintenance design;

3, bearing and expansion joint design.