CN204252345U - The connecting structure of a kind of precast concrete plank and girder steel - Google Patents

Abstract

The utility model discloses a connection structure between a prefabricated concrete slab and a steel beam, which comprises a prefabricated concrete slab, a steel beam, and an anchoring steel bar; the end side of the prefabricated concrete slab is located on the steel beam; In the prefabricated concrete slab, the lower part is connected with the steel beam by welding. The connection structure of the prefabricated concrete slab and the steel beam of the utility model has the characteristics of flexible layout, simple manufacture, fast construction, good economy, good seismic performance and can improve the shearing resistance of the floor slab.

Description

A connection structure between prefabricated concrete slab and steel beam

technical field

The utility model relates to the technical field of building structures, in particular to a connection structure between a prefabricated concrete slab and a steel beam.

Background technique

For the connection of precast concrete slab components such as SP prestressed hollow slabs and steel beams, the traditional method is to install steel plates or angle steel embedded parts at the bottom of the slab, and realize the connection of precast slabs and steel beams by welding with steel beams. The embedded parts of this method need to be pre-embedded when the slab is made, and are greatly affected by the slab manufacturing process and the layout of the main reinforcement. It is greatly restricted, resulting in the need for overhead welding during on-site construction, which has a relatively large adverse effect on the construction speed and welding quality.

Contents of the invention

The purpose of this utility model is to provide a connection structure between prefabricated concrete slabs and steel beams, which has the characteristics of flexible layout, simple manufacture, fast construction, good economy, good seismic performance and can improve the shearing capacity of the floor.

In order to achieve the above object, the technical scheme of the utility model is:

A connection structure between a prefabricated concrete slab and a steel beam, which is characterized in that it includes a prefabricated concrete slab, a steel beam, and an anchoring reinforcement; the end side of the prefabricated concrete slab is located on the steel beam; Inside the concrete slab, the lower part is connected to the steel beams by welding.

Further, the anchoring reinforcement is bent into a zigzag shape by the reinforcement, its upper part is a straight line extending along the length direction of the precast concrete slab, and the lower part of the anchoring reinforcement is a straight line parallel to the plane of the upper flange of the steel beam.

Also, the bending part of the anchoring steel bar is close to the end of the prefabricated concrete slab.

In addition, the anchoring steel bars are anchored together in the precast concrete slab when the precast concrete slab is fabricated or after the fabrication is completed.

Furthermore, the upper part of the anchoring steel bar is welded with a transverse steel bar perpendicular to the length direction of the prefabricated concrete slab.

Furthermore, the two precast concrete slabs are arranged opposite to each other, and the end sides of the two precast concrete slabs are placed on the upper flange of the steel beam, and placed in the slab seam formed by pouring concrete between the adjacent precast concrete slabs, that is, the slab side seam longitudinal reinforcement parallel to the length direction of the prefabricated concrete slab, and pour concrete.

In addition, horizontal reinforcement perpendicular to the length direction of the precast concrete slab is placed in the seam (slab end seam) between the ends of the precast concrete slab on the upper flange of the steel beam.

There is a cast-in-place concrete layer above the prefabricated concrete slab to form a laminated slab, and there is a steel mesh in the cast-in-place concrete layer.

The plane of the upper flange of the steel beam is vertically provided with several studs or vertically welded with several shearing steel bars along the length direction.

The prefabricated concrete slab described in the utility model is a hollow slab or a solid slab.

The prefabricated concrete slab is a hollow slab, and the anchoring steel bar is arranged in the core hole of the hollow slab and poured with concrete.

The beneficial effects of the utility model:

1. The connection structure of the present utility model, the anchoring steel bar is welded with the steel beam in the slab end seam, which solves the problems of slow on-site construction speed and poor welding quality in the traditional method of connecting the prefabricated floor slab and steel beam such as SP slabs And other issues are of great significance to the promotion of prefabricated floor slabs such as SP panels.

2. The connection structure of the utility model is simple to manufacture and can be completed with only one anchoring steel bar; the layout is flexible and can be adjusted according to the layout and specific conditions, because it can be carried out after the hollow boards such as SP boards are completed. For SP boards The production progress of the hollow slab is not affected; it is easy to adjust, and when the surface of the steel beam is partially uneven, it can be properly adjusted and then welded, with strong applicability and great promotion value.

3. For the connection structure of the present utility model, for the hollow prefabricated slab, the concrete is poured into the core hole to anchor the steel bar, so the shear bearing capacity of the prefabricated slab can be improved.

4. The connection structure of the present invention has a certain degree of flexibility under relatively strong earthquake action, and will not cause brittle disconnection. While ensuring reliable connection, it can consume earthquake action, that is, it has good anti-seismic performance.

Description of drawings

Fig. 1 is a cross-sectional view (vertical beam length direction) of the utility model embodiment 1;

Fig. 2 is the A-A section of Fig. 1;

Fig. 3 is the longitudinal section of setting a single longitudinal steel bar in the plate side seam in embodiment 2 of the utility model;

Fig. 4 is the longitudinal section of setting two longitudinal steel bars in the plate side seam in embodiment 2 of the utility model;

Fig. 5 is the cross-sectional view of the utility model embodiment 3;

Fig. 6 is the B-B sectional view of Fig. 5;

Fig. 7 is the cross-sectional view of the utility model embodiment 4;

Fig. 8 is the C-C sectional view of Fig. 7;

Fig. 9 is a cross-sectional view of Embodiment 5 of the present utility model;

Fig. 10 is a D-D sectional view of Fig. 9;

Fig. 11 is a longitudinal sectional view of Embodiment 6 of the present utility model;

Fig. 12 is a top view of Embodiment 1 of the present utility model.

Detailed ways

Referring to Fig. 1, Fig. 2 and Fig. 12, an embodiment 1 of a connection structure between a prefabricated concrete slab and a steel beam of the present invention includes a prefabricated concrete slab 1, a steel beam 2, and anchor bars 3; the prefabricated concrete slab The end side of 1 is located on the steel beam 2; the upper part of the anchor bar 3 is anchored in the precast concrete slab 1, and the lower part is connected with the steel beam 2 by welding.

In this embodiment, the two precast concrete slabs 1 and 1' described in the present invention are arranged opposite to each other, and the end sides of the two precast concrete slabs 1 and 1' are rested on the upper flange of the steel beam 2, and the two adjacent The longitudinal steel bar 6 parallel to the length direction of the precast concrete slabs 1, 1" is placed in the slab seam formed by pouring concrete between the precast concrete slabs 1, 1", that is, the slab side seam 5, and concrete is poured. All grouting is poured in the slab end seam 4 and the slab side seam 5 .

There is no cast-in-situ concrete layer above the prefabricated concrete slab 1 (full prefabricated assembly type); the anchor steel bars 3 are anchored to the prefabricated concrete slab by pouring concrete when the prefabricated concrete slab 1 is manufactured or after it is manufactured within 1. The bending part of the anchoring reinforcement 3 is close to the end of the prefabricated concrete slab 1, which is bent into a broken line shape by the reinforcement, wherein the lower part of the anchoring reinforcement 3 is parallel to the plane of the upper flange of the steel beam 2 and is parallel to the upper flange of the steel beam 2. The flange is welded and fixed.

Referring to Fig. 3 and Fig. 4, the embodiment 2 of the connection structure between the precast concrete slab and the steel beam of the present invention differs from that of the embodiment 1 in that: the side seam 5 of the slab is placed in parallel with the length direction of the precast concrete slab 1 Longitudinal reinforcement 6.

Referring to Fig. 5 and Fig. 6, the embodiment 3 of the connection structure between the precast concrete slab and the steel beam of the present invention is different from the embodiment 1 in that: the anchor bar 3 is welded with the precast concrete slab 1 in the longitudinal direction Vertical transverse reinforcement7.

Referring to Fig. 7 and Fig. 8, the embodiment 4 of the connection structure between the precast concrete slab and the steel beam of the present utility model is different from the embodiment 1 in that: the side seam 5 of the slab is placed in parallel with the length direction of the precast concrete slab 1 Longitudinal steel bars 6, horizontal steel bars 7 perpendicular to the length direction of the precast concrete slab 1 are placed in the slab end seams 4, and the longitudinal steel bars 6 and the horizontal steel bars 7 are usually bound.

Referring to Fig. 9 and Fig. 10, the embodiment 5 of the connection structure between the precast concrete slab and the steel beam of the present invention is different from the embodiment 1 in that: the precast concrete slab 1 has a cast-in-situ concrete layer 8 (laminated slab), and the The cast-in-place concrete layer 8 has a reinforcement mesh 9; the anchor reinforcement 3 is welded with a transverse reinforcement 7 perpendicular to the length direction of the precast concrete slab 1 .

Referring to Fig. 11, Embodiment 6 of the connection structure between the precast concrete slab and the steel beam of the present invention differs from Embodiment 5 in that the steel beam 1 has studs 10 or welded shear bars.

Referring to Fig. 12, the prefabricated concrete slab 1' described in the utility model (taking the prefabricated concrete slab 1 ' as an example) is a hollow slab or a solid slab.

The prefabricated concrete slab 1' is a hollow slab, and the anchor bars 3 are arranged in the core hole 11 of the hollow slab and poured with concrete.

Claims (21)

1. A connection structure between a prefabricated concrete slab and a steel beam, characterized in that it comprises a prefabricated concrete slab, a steel beam, and anchoring reinforcement; the end side of the prefabricating concrete slab is positioned on the steel beam; In the prefabricated concrete slab, the lower part is connected with the steel beam by welding. 2. The connection structure between prefabricated concrete slab and steel beam as claimed in claim 1, characterized in that, said anchoring steel bar is bent into a broken line shape by a steel bar, and its upper part is a straight line extending along the length direction of said prefabricated concrete slab shape, the lower part of the anchoring reinforcement is a straight line parallel to the plane of the upper flange of the steel beam. 3. The connection structure between the precast concrete slab and the steel beam according to claim 1 or 2, characterized in that, the upper bending part of the anchoring steel bar is close to the end of the precast concrete slab. 4. The connection structure between the precast concrete slab and the steel beam according to claim 1 or 2, characterized in that, the upper part of the anchoring steel bar is welded with a transverse steel bar perpendicular to the length direction of the precast concrete slab. 5. The connection structure between the precast concrete slab and the steel beam according to claim 3, wherein the upper part of the anchoring steel bar is welded with a transverse steel bar perpendicular to the length direction of the precast concrete slab. 6. The connection structure between precast concrete slabs and steel beams as claimed in claim 1, characterized in that two of the precast concrete slabs are arranged opposite to each other, and the end sides of the two precast concrete slabs are placed on the upper flange of the steel beam, side by side. The longitudinal steel bars parallel to the length direction of the precast concrete slabs are placed in the slab seams formed by pouring concrete between adjacent precast concrete slabs, that is, the slab side seams, and concrete is poured. 7. The connection structure between the precast concrete slab and the steel girder according to claim 1 or 6, characterized in that it rests in the slab seam between the ends of the precast concrete slab on the upper flange of the steel beam, that is, the slab end seam Transverse reinforcing bars perpendicular to the length direction of the prefabricated concrete slab are placed, and concrete is poured. 8. The connection structure of precast concrete slab and steel beam as claimed in claim 1, characterized in that there is a cast-in-place concrete layer above the precast concrete slab to form a laminated slab, and there is a steel mesh in the cast-in-place concrete layer. 9. The connection structure between prefabricated concrete slab and steel beam as claimed in claim 1 or 2, characterized in that, on the plane of the upper flange of the steel beam, several studs are vertically arranged along the length direction or several shear resistances are vertically welded. rebar. 10. The connection structure between a precast concrete slab and a steel beam according to claim 1 or 2, wherein the precast concrete slab is a hollow slab or a solid slab. 11. The connection structure of precast concrete slabs and steel beams according to claim 3, characterized in that, said precast concrete slabs are hollow slabs or solid slabs. 12. The connection structure of precast concrete slabs and steel beams according to claim 4, characterized in that, said precast concrete slabs are hollow slabs or solid slabs. 13. The connection structure of precast concrete slabs and steel beams according to claim 6, characterized in that, said precast concrete slabs are hollow slabs or solid slabs. 14. The connection structure of precast concrete slabs and steel beams according to claim 7, characterized in that, said precast concrete slabs are hollow slabs or solid slabs. 15. The connection structure of precast concrete slabs and steel beams according to claim 8, characterized in that, said precast concrete slabs are hollow slabs or solid slabs. 16. The connection structure between a precast concrete slab and a steel beam as claimed in claim 1 or 2, wherein the precast concrete slab is a hollow slab, and the anchoring reinforcement is arranged in the core hole of the hollow slab, and pour concrete. 17. The connection structure between prefabricated concrete slabs and steel beams as claimed in claim 3, wherein the prefabricated concrete slabs are hollow slabs, and the anchoring steel bars are arranged in the core holes of the hollow slabs and poured with concrete . 18. The connection structure between prefabricated concrete slabs and steel beams as claimed in claim 4, characterized in that, said prefabricated concrete slabs are hollow slabs, said anchoring steel bars are arranged in the core holes of said hollow slabs, and poured with concrete . 19. The connection structure between prefabricated concrete slabs and steel beams as claimed in claim 6, characterized in that, said prefabricated concrete slabs are hollow slabs, said anchoring steel bars are arranged in the core holes of the hollow slabs, and poured with concrete . 20. The connection structure between prefabricated concrete slabs and steel beams as claimed in claim 7, characterized in that, said prefabricated concrete slabs are hollow slabs, said anchoring steel bars are arranged in the core holes of the hollow slabs, and poured with concrete . 21. The connection structure between prefabricated concrete slabs and steel beams as claimed in claim 8, characterized in that, said prefabricated concrete slabs are hollow slabs, said anchoring steel bars are arranged in the core holes of the hollow slabs, and poured with concrete .