CN118208001A - Assembled reinforced concrete column, beam and plate - Google Patents

Abstract

The invention discloses an assembled reinforced concrete column, beam and plate, wherein connecting steel plates are arranged at the ends of prefabricated members of the reinforced concrete column, beam and plate, the steel plates are welded with longitudinal ribs of the members, bolt holes are formed in the outer edges of the steel plates, and after the steel plates at the ends of the two members to be connected are attached, the steel plates are tightly connected through bolts; the invention realizes the connection of the reinforced concrete structural members by adopting the bolt fastener connection mode of the steel structural members.

Description

Assembled reinforced concrete column, beam and plate

Technical Field

The invention relates to a concrete building, in particular to the technical field of assembled concrete structural members.

Background

In the current steel structure design standard, the bolt connection is one of the main connection means adopted by steel columns and steel beams.

In the existing prefabricated reinforced concrete structure, although column beam plate components can be prefabricated respectively, the steel bar connection can only adopt sleeve grouting connection, the prefabricated components are thick and heavy, the hoisting difficulty is high, a plurality of steel bar heads need to be bent none, the steel bars need to be inserted into a plurality of sleeves at the same time (such as the novel column, beam structure and assembly connection method of the assembled reinforced concrete disclosed in China patent CN 104727439A), the steel bars are difficult to be inserted into the sleeves at multiple times, the implementation difficulty is extremely high, the construction site can often only cut the steel bar heads to place the stable hanging pieces first, then virtual grouting is used for derivatization, the connection quality is unreliable, and serious hidden dangers which are difficult to find and endanger safety are formed.

Chinese patent CN 112095811A discloses a fabricated concrete frame beam column dry-type connection node using bolted connection, and uses L-shaped steel plates to perform high-ductility bolted connection at the beam column connection, but the shearing force between the beam and the column in this scheme is supported by the bolts on the column, and the strength is not enough, resulting in potential safety hazard.

Chinese patent CN 110792165A discloses a prefabricated assembled concrete beam-column joint connection device and method, where a connection end plate is fixedly installed at one end of a prefabricated beam connected with a prefabricated column, the prefabricated column has a butt joint zone, the butt joint zone is a connection zone of the prefabricated column and the prefabricated beam, the prefabricated column is fixedly connected with an end of an outer-covered steel plate prefabricated beam at the butt joint zone, and the end of the prefabricated beam is butt-jointed with the prefabricated column at the butt joint zone. The scheme is the same as the scheme disclosed in the CN 112095811A, and the beam column connection is not overlapped and is supported by the bolts on the column.

Disclosure of Invention

The invention aims to provide an assembled concrete connecting structure which can be connected with a steel structure in the same way.

In order to achieve the aim, the assembled reinforced concrete column, beam and plate comprise prefabricated columns, beams and plates, wherein horizontal connecting steel plates are welded at the ends of longitudinal ribs of a reinforcement cage of the columns, and the upper and lower columns are connected with the two horizontal connecting steel plates by bolts; the beam consists of a beam head and a connecting beam, wherein the beam head is provided with an encryption stirrup, one end of the beam head is horizontally inserted in a column joint area to be prefabricated integrally with a column, the cross section of the other end of the beam head is in a Z shape with a short upper part and a long lower part, a Z-shaped connecting steel plate is welded at the end part of a longitudinal reinforcement cage of the beam head, the connecting beam end part is in a Z shape with a long upper part and a short lower part corresponding to the beam head, the Z-shaped connecting steel plate corresponding to the beam head is welded at the end part of the longitudinal reinforcement cage of the connecting beam, and two groups of corresponding Z-shaped connecting steel plates are connected through bolts; the beam is provided with a plurality of groups of angle code steel plates through opposite-pull screws, and the horizontal end surfaces of the angle code steel plates are in threaded connection with nuts preset at the trough of the diagonal web bars of the floor slab reinforcement cage.

The end parts of the two opposite floorslabs are covered with L-shaped galvanized iron sheets, and an n-shaped galvanized iron sheet is covered on two vertical surfaces of the L-shaped galvanized iron sheets at the end parts of the two floorslabs.

The center of the horizontal connecting steel plate of the column is provided with a concrete pouring hole.

After the scheme is adopted, the end parts of the prefabricated components of the reinforced concrete column, the beam and the plate are provided with the connecting steel plates, the steel plates are welded with the longitudinal ribs of the components, the outer edges of the steel plates are provided with the bolt holes, and after the steel plates at the end parts of the two components to be connected are attached, the bolts are tightly screwed, so that the reinforced concrete structural components are connected in a bolt fastener connecting mode of the steel structural components.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the horizontal connecting part structure of the column end of the present invention;

Fig. 3 is a schematic diagram of the connection of the beam head to the connecting beam and a schematic diagram of the front of the Z-shaped connecting steel plate according to the invention.

FIG. 4 is a schematic illustration of the beam to floor connection of the present invention;

FIG. 5 is a schematic illustration of the connection of a side rail to a floor slab in accordance with the present invention.

Description of the reference numerals:

1a, 1b columns; 11 (11 a, 11 b) horizontal end plates; 12. column longitudinal ribs; 2. a beam; 2a, connecting beams; 2b, beam head; 21a, 21b, "Z" connecting steel plates; 211. the beam is connected with a steel plate screw hole; 22 beam longitudinal ribs; 3. a floor slab; 31. floor connection nuts; 32. floor diagonal web bars; 4. a template; 5. externally inserting a screw; 6. angle code steel plate; 7. a counter-pulling screw; 8. l-shaped galvanized iron sheet; 9. n-shaped galvanized iron sheet.

Detailed Description

In order to describe the technical content, the constructional features, the achieved objects and effects of the present invention in detail, the following description is made in connection with the embodiments and the accompanying drawings.

As shown in fig. 1, the steel reinforcement cage of the concrete member is welded with steel plates at the ends, and is connected by adopting a fastening piece connection mode which is the same as that of a steel structure.

According to the storey segments 1a and 1b, as shown in fig. 2, longitudinal ribs 12 at two ends of a truss type reinforcement cage are welded to a horizontal steel plate 11, and similar to steel column end plates, an upper column and a lower column are used for connecting the upper steel plate 11a with the lower steel plate 11b by bolts, small cross shapes at the periphery in fig. 2 are screw holes 111, and concrete pouring holes (not shown in the figure) are formed in the centers (large cross shapes at the center in fig. 2) of the horizontal connecting steel plates of the columns. The horizontal plane of the column contacts with the matched bolt drawknot, so that the bearing capacity of bearing, bending and shearing is not weakened, and under the huge effect, even if the column feet and the column heads slide horizontally, the supporting surface still provides a new safe position in neutral balance, and the structural anti-earthquake safety is higher.

As shown in fig. 3, the sections with larger hogging moment of the beam heads 2b at the two ends of the beam are reserved as column brackets, the longitudinal ribs are anchored into the column node areas and are manufactured with column reinforcement cages once, the end parts of the bracket are welded with connecting end plates, the end part stirrup encrypting areas are cut off from the boundaries of the end part stirrup encrypting areas, and the end part stirrup encrypting sections are manufactured integrally by the column nodes so as to ensure that the strong column and the weak beam are ensured to be strong, the strong node is strong and shearing resistant; the cross section of the other end of the beam head 2b is Z-shaped with the upper part short and the lower part long, a Z-shaped connecting steel plate 21b is welded at the end part of the longitudinal bar of the reinforcement cage of the beam head 2b, the end part of the connecting beam 2a is Z-shaped with the upper part long and the lower part short corresponding to the beam head, the Z-shaped connecting steel plate 21a corresponding to the beam head is welded at the end part of the longitudinal bar of the reinforcement cage of the connecting beam 2a, two groups of corresponding Z-shaped connecting steel plates are connected through bolts, the beam head 2b adopts an upper bearing type step, and the two ends of the connecting beam 2a adopt upper lap type steps, thereby being convenient for construction and hoisting placement and convenient for not setting support and disassembly.

As shown in fig. 4-5, the connection between the floor slab and the beam is schematically shown, various precast slabs or net rack reinforcement cage molds are adopted, and the floor slab 3 end slurry is placed on the beam 2; when the floor slab 3 and the beam 2 are required to form a combined structure, a screw cap 31 can be pre-welded at the trough of the diagonal web rib 32 in the floor slab 3, and the angle code steel plate 6-externally inserted screw 5 is used for connecting the beam. The plate and the beam are connected by adopting angle code-bolt. All the connecting screws are screwed out, and the floor slab 3 can be detached. The nuts are pre-welded in the floor slab 3, and the floor slab 3 is not provided with a bolt pore canal which is penetrated up and down so as to avoid easy leakage; after the bolts are loosened, the 3 sides of the floor slab are simply supported on the beam, so that the falling is prevented, and the construction is convenient. In order to prevent seepage from rusting, the end parts of the floor slabs 3 are covered with L-shaped galvanized iron sheets 8, and an n-shaped galvanized iron sheet 9 is covered on two vertical surfaces of the L-shaped galvanized iron sheets 8 at the end parts of the two opposite floor slabs at the gap parts of the end parts of the two opposite floor slabs 3.

All designs of the invention accord with GB50010-2010 (2015 edition) of concrete structure design specification, and the related requirements of allowing concrete member steel bars to be welded on end steel plates for anchoring are met; the beam and the floor slab are arranged on the head part of the beam or the beam in a setting mode, and the beam and the floor slab cannot fall off even if the screw rod is loosened or broken.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims (3)

1. Assembled reinforced concrete column, roof beam, board, including prefabricated post, roof beam, board, its characterized in that: welding horizontal connecting steel plates at the ends of longitudinal bars of the reinforcement cage of the column, and connecting the two horizontal connecting steel plates by the upper layer of column and the lower layer of column by bolts; the beam consists of a beam head and a connecting beam, wherein the beam head is provided with an encryption stirrup, one end of the beam head is horizontally inserted in a column joint area to be prefabricated integrally with a column, the cross section of the other end of the beam head is in a Z shape with a short upper part and a long lower part, a Z-shaped connecting steel plate is welded at the end part of a longitudinal reinforcement cage of the beam head, the connecting beam end part is in a Z shape with a long upper part and a short lower part corresponding to the beam head, the Z-shaped connecting steel plate corresponding to the beam head is welded at the end part of the longitudinal reinforcement cage of the connecting beam, and two groups of corresponding Z-shaped connecting steel plates are connected through bolts; the beam is provided with a plurality of groups of angle code steel plates through opposite-pull screws, and the horizontal end surfaces of the angle code steel plates are in threaded connection with nuts preset at the trough of the diagonal web bars of the floor slab reinforcement cage.

2. A fabricated reinforced concrete column, beam, panel according to claim 1, wherein: the end parts of the floor slabs are wrapped with L-shaped galvanized iron sheets, and an n-shaped galvanized iron sheet is covered at the gap between the two end parts of the floor slabs.

3. A fabricated reinforced concrete column, beam, panel according to claim 1, wherein: the center of the horizontal connecting steel plate of the column is provided with a concrete pouring hole.