Prefabricated concrete beam-column node and construction method therefor

1. A construction method for a prefabricated concrete beam-column node, comprising:

assembling node connectors, and mounting studs on each node connector, wherein the studs are evenly distributed along an extension direction of the node connectors;

welding a circumferential reinforcing plate with a groove hole in the center to a middle-rear section of each node connector;

mounting a longitudinal rebar on each circumferential reinforcing plate;

filling concrete between two circumferential reinforcing plates to form a middle section;

welding a hidden corbel to a side flange of each of structural columns;

hoisting the middle section, and overlapping each node connector with the corresponding hidden corbel;

welding each node connector to the corresponding structural column; and

filling concrete between the respective circumferential reinforcing plate and the corresponding structural column to form a connection section.

2. The construction method for the prefabricated concrete beam-column node according to claim 1 , wherein the mounting studs on each node connector comprises:

mounting studs on an upper lower flange steel plate of each node connector;

mounting studs on a lower flange steel plate of each node connector; and

mounting studs on a side steel plate located on two sides of each node connector.

3. The construction method for the prefabricated concrete beam-column node according to claim 1 , wherein the overlapping each node connector with the corresponding hidden corbel comprises:

overlapping each node connector with the corresponding hidden corbel through a hidden corbel mounting hole on the node connector; and

repairing welding to plug each hidden corbel mounting hole.

4. The construction method for the prefabricated concrete beam-column node according to claim 1 , wherein the filling concrete between two circumferential reinforcing plates to form a middle section comprises:

plugging the groove hole on each circumferential reinforcing plate; and

placing a pair of the node connectors mounted with the longitudinal rebar into a formwork, and filling concrete between the two circumferential reinforcing plates to form a middle section.

5. The construction method for the prefabricated concrete beam-column node according to claim 1 , wherein the filling concrete between the respective circumferential reinforcing plate and the corresponding structural column to form a connection section comprises:

removing a plugging material in each groove hole; and

filling concrete through a grouting port of each node connector.

6. A prefabricated concrete beam-column node, comprising: structural columns, a concrete beam, and node connectors connecting the structural columns with the concrete beam, wherein the node connectors are horizontally arranged at two ends of the concrete beam, and a grouting port is defined on an upper surface of each node connector;

a circumferential reinforcing plate is arranged in each node connector, and a through groove hole is defined on each circumferential reinforcing plate; and

a hidden corbel is welded to a side flange of each structural column, each hidden corbel is pre-embedded in the concrete beam, and the structural columns are welded to the node connectors.

7. The prefabricated concrete beam-column node according to claim 6 , wherein a plurality of reserved rebar holes for mounting longitudinal rebars are defined on each circumferential reinforcing plate.

8. The prefabricated concrete beam-column node according to claim 6 , wherein each node connector comprises an upper flange steel plate in contact with an upper flange of the concrete beam, a lower flange steel plate in contact with a lower flange of the concrete beam, and a side steel plate, and the side steel plate is configured to connect the upper flange steel plate with the lower flange steel plate; and

the grouting port is defined at a front end of each upper flange steel plate.

9. The prefabricated concrete beam-column node according to claim 8 , wherein each structural column comprises a steel column or a concrete column, and a hoop plate is provided on an outer circumference of each concrete column.