1. Process flow:

Binding in the formwork: draw the stirrup spacing of the primary and secondary beams → place the stirrups of the main beam and the secondary beam → pass through the longitudinal reinforcement of the bottom layer of the main beam and fix it with the stirrup → pass through the longitudinal frame of the upper layer of the main beam → bind according to the stirrup spacing → pass the longitudinal reinforcement of the upper layer of the secondary beam → bind according to the stirrup spacing

Binding outside the formwork (binding at the upper opening of the beam formwork first and then entering the formwork)

Draw the stirrup spacing → lay several cross bars on the upper opening of the primary and secondary beam formwork → pass through the longitudinal reinforcement of the lower layer of the main beam → pass through the lower layer reinforcement of the secondary beam → pass through the upper layer reinforcement of the main beam → bind according to the stirrup spacing → pull out the cross bar and drop it into the formwork

2. Draw the stirrup spacing on the beam side formwork and place the stirrup.

3. First pass through the longitudinal load-bearing reinforcement and bending reinforcement at the lower part of the main beam, and separate the stirrups one by one according to the drawn spacing; pass through the longitudinal stress reinforcement and bent reinforcement at the lower part of the secondary beam, and set up the stirrup; place the erection reinforcement of the primary and secondary beams; bind the erection reinforcement and the stirrup firmly at a certain interval; adjust the spacing of stirrups to make the spacing meet the design requirements, kidnap the vertical reinforcement, and then bind the main reinforcement, and the main and secondary beams are bound at the same time Cooperation.

4. The longitudinal reinforcement at the upper part of the frame beam should run through the middle node. The anchorage length of the longitudinal reinforcement at the lower part of the beam into the middle node and the length extending through the center line should meet the design requirements

5. The stirrup of longitudinal reinforcement on the upper part of beam should be bound with sleeve buckle method

6. The hook of stirrup at the overlapping position shall be staggered bound in the beam. The hook of stirrup is 135 ° and the length of straight part is 10d. If closed hoop is made, the length of single side weld is 5D.

7. The first stirrup at beam end shall be set at 50 mm away from the edge of column joint. The stirrups at the joint of beam end and column shall be densified, and the spacing and length of densified area shall meet the design requirements.

8. When the force bar is double row, the short reinforcement can be used to pad between the two layers of reinforcement, and the spacing of reinforcement row shall meet the design requirements.

9. Overlapping of beam reinforcement: when the diameter of the stressed reinforcement of the beam is equal to or greater than 22mm, the welded joint should be used; when the diameter is less than 22mm, the binding joint can be used, and the lap length should meet the specification. The distance between the end of the lap length and the bending part of the reinforcement shall not be less than 10 times of the diameter of the reinforcement. The joint should not be located at the maximum bending moment of the component. In the tension area, the end of the binding joint of grade I reinforcement should be made with a hook (no hook for grade II reinforcement). The lap joint should be firmly tied at the center and both ends. The positions of joints shall be staggered. When Binding lap joints are used, the percentage of the cross-sectional area of the stressed reinforcement with joints in the total cross-sectional area of the stressed reinforcement in any section of the specified lap length shall be smaller than 50%.