CN216810240U

CN216810240U - Reinforcing device for bottom rib of lap joint secondary beam in cast-in-place section of prefabricated primary and secondary beams

Info

Publication number: CN216810240U
Application number: CN202123398107.0U
Authority: CN
Inventors: 郭柳
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-24
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a reinforcing device for a bottom rib of an inner lap joint secondary beam of a cast-in-place section of a prefabricated primary beam and a prefabricated secondary beam, which comprises a plurality of additional hanging ribs, two prefabricated secondary beams and a prefabricated main beam, wherein each additional hanging rib consists of a convex part and two parallel parts, the convex part is positioned in an upper superposed layer of the prefabricated main beam, and the two parallel parts are positioned at the bottoms of the two prefabricated secondary beams. The utility model can be effectively wrapped by cast-in-place concrete, has high combination degree, and enhances the shear-resistant bearing capacity structural strength of the connection node of the prefabricated main beam and the secondary beam. In addition, as remedy and substitute means when prefabricated primary and secondary roof beam mechanical connection is difficult, processing and simple operation can promote the site operation efficiency at this node under the prerequisite that guarantees that structure construction quality satisfies the designing requirement.

Description

Reinforcing device for bottom rib of lap joint secondary beam in cast-in-place section of prefabricated primary and secondary beams

Technical Field

The utility model relates to the technical field of constructional engineering, in particular to a reinforcing device for a bottom rib of a prefabricated primary beam and a prefabricated secondary beam in-situ casting section.

Background

In the construction process of the main structure of the fabricated building, the prefabricated main beam and the out-of-plane prefabricated secondary beam are effectively connected in a cast-in-place section. And when a worker in a construction site twists a plurality of secondary beam bottom lap joint ribs in a secondary beam cast-in-place section to a prefabricated main beam reserved bottom rib connector, an operation interface is abnormally narrow and cannot twist the secondary beam bottom lap joint ribs in place, the end part structure performance of the prefabricated secondary beam is weak, the shearing resistance and the bearing capacity are insufficient, factors such as the protection of prefabricated component finished products, production and construction errors, the correct operation consciousness of workers and the like exist, the condition that the individual bottom ribs of the prefabricated secondary beam are not anchored into the prefabricated main beam in a mechanical connection mode cannot meet the requirements of concrete structure design specifications (GB 50010), the integral rigidity of the secondary beam and the shearing resistance and the bearing capacity of the end part are reduced, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects that the integral rigidity and the end shear-resistant bearing capacity of a secondary beam are reduced due to factors such as inadequate protection of a prefabricated component finished product, production and construction errors, weak consciousness of correct operation of workers and the like, and provides a reinforcing device for splicing a bottom rib of the secondary beam in a cast-in-place section of a prefabricated primary beam and a prefabricated secondary beam.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a reinforcing apparatus of lap joint secondary beam base muscle in cast-in-place section of prefabricated primary and secondary beam, includes many additional hanging muscle, two prefabricated secondary beams and prefabricated girder, additional hanging muscle comprises bellying and two parallel portions, the bellying is located the upper portion coincide layer of prefabricated girder, and two parallel portions are located the bottom of two prefabricated secondary beams, bellying and parallel portion constitution inclination is 60.

Preferably, the bottom of each of the two prefabricated secondary beams is provided with a plurality of first prefabricated secondary beam bottom ribs and two second prefabricated secondary beam bottom ribs, the two second prefabricated secondary beam bottom ribs are located on two sides of the first prefabricated secondary beam bottom ribs, and the additional hanging ribs and the first prefabricated secondary beam bottom ribs are connected through steel wire binding.

Preferably, the bottoms of the two prefabricated secondary beams are connected with a plurality of bottom short ribs, the lower end of the prefabricated main beam is connected with a reserved bottom rib connector corresponding to the bottom short ribs, the reserved bottom rib connector is connected with the bottom short ribs, and the bottom short ribs are connected with the bottom ribs of the second prefabricated secondary beam.

Preferably, the additional hanging bar and the bottom bar of the first prefabricated secondary beam in the cast-in-place section adopt reinforcing steel bars with the same specification.

Preferably, the length of the middle straight section of the additional hanging rib is one time of the width of the prefabricated secondary beam.

Compared with the prior art, the utility model has the beneficial effects that: the operation that the lapping ribs at the bottom of the non-corner part of the secondary beam need to be screwed into the reserved bottom rib connector can be avoided. The device can be effectively wrapped by cast-in-place concrete, has high combination degree, and enhances the shear-resistant bearing capacity structural strength of the connecting node of the prefabricated main beam and the secondary beam. In addition, as remedy and substitute means when prefabricated primary and secondary roof beam mechanical connection is difficult, processing and simple operation can promote the site operation efficiency at this node under the prerequisite that guarantees that structure construction quality satisfies the designing requirement.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view of the present invention

Fig. 4 is a schematic structural diagram of the present invention.

In the figure: the prefabricated main beam of 1, 2 additional hang muscle, 3 prefabricated secondary beam, 4 first prefabricated secondary beam base muscle, 5 reserve base muscle connector, 6 bottom short muscle, 7 second prefabricated secondary beam base muscle.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1-4, a reinforcement device for lap joint secondary beam bottom ribs in a cast-in-place section of a prefabricated primary and secondary beam comprises a plurality of additional hanging ribs 2, two prefabricated secondary beams 3 and a prefabricated main beam 1, wherein the additional hanging ribs 2 comprise a convex part and two parallel parts, the inclination angle formed by the convex part and the parallel parts is 60 degrees, two ends of the additional hanging ribs 2 are positioned at the bottoms of the two prefabricated secondary beams 3, the two parallel parts are positioned at the bottoms of the two prefabricated secondary beams 3, the height of the two parallel parts is not lower than the height of the secondary beam bottom ribs, the central distance between the two parallel parts is not larger than the sum of the radius of 1.5 times, the middle part of the additional hanging ribs 2 is positioned in an upper superposed layer of the prefabricated main beam 1, the convex part is positioned in the upper superposed layer of the prefabricated main beam 1 and does not influence the normal arrangement of the longitudinal ribs at the upper part of the prefabricated main beam 1, the inclination angle of the middle part of the additional hanging ribs 2 is 60 degrees, the length of the straight part of the additional hanging ribs 2 is one time of the width of the prefabricated secondary beam 3, the device for replacing part of mechanical connection by the additional hanging ribs can meet the connection requirements of the prefabricated main and secondary beams with various dimensions, and the additional hanging ribs 2 replace the reserved bottom rib connector 5 which is blocked and cannot be dredged in the prefabricated main beam 1.

Referring to fig. 1-4, the bottoms of two prefabricated secondary beams 3 are provided with a plurality of first prefabricated secondary beam bottom ribs 4 and two second prefabricated secondary beam bottom ribs 7, the additional hanging ribs 2 and the first prefabricated secondary beam bottom ribs 4 in the cast-in-place section adopt reinforcing steel bars with the same specification, the two second prefabricated secondary beam bottom ribs 7 are positioned on two sides of the first prefabricated secondary beam bottom ribs 4, the additional hanging ribs 2 and the first prefabricated secondary beam bottom ribs 4 are connected through steel wire binding, when the additional hanging ribs 2, the first prefabricated secondary beam bottom ribs 4 and the two second prefabricated secondary beam bottom ribs 7 are excessive in number, the principle of 'large diameter and few number' can be adopted for structural design suggestion, the spatial arrangement of the additional hanging ribs 2 and the secondary beam bottom ribs is reasonably optimized, and the additional hanging ribs 2 cannot be applied to replace the two second prefabricated secondary beam bottom ribs 7 to anchor into the prefabricated main beam 1 in a mechanical connection mode.

Referring to fig. 1-4, the bottoms of two prefabricated secondary beams 3 are connected with a plurality of bottom short ribs 6, the lower end of the prefabricated main beam 1 is connected with a reserved bottom rib connector 5 corresponding to the bottom short ribs 6, the reserved bottom rib connector 5 is connected with the bottom short ribs 6, the bottom short ribs 6 are connected with second prefabricated secondary beam bottom ribs 7, the two second prefabricated secondary beam bottom ribs 7 are connected in a current reuse mode, connection stability is guaranteed, and construction quality of the structure is guaranteed.

In the utility model, when in use, after the processed prefabricated main beam 1 and the two prefabricated secondary beams 3 are placed at corresponding positions, the plurality of additional hanging ribs 2 respectively penetrate through the prefabricated main beam 1, and are simultaneously connected to the bottom ribs 4 of the first prefabricated secondary beam at the bottom of the prefabricated secondary beam 3 through steel wire binding, and the angle between the additional hanging ribs 2 and the bottom ribs 4 of the first prefabricated secondary beam is adjusted to be 60 degrees, and then a worker connects the bottom short ribs 6 with the bottom short ribs 6 through the reserved bottom rib connector 5 and connects the bottom short ribs 6 with the bottom ribs 7 of the second prefabricated secondary beam, so that the production and manufacturing difficulty of the prefabricated main beam can be effectively reduced, the production quality of the prefabricated main beam is favorably ensured, the production and manufacturing efficiency of prefabricated components is improved, and the comprehensive production and construction cost is reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a reinforcing apparatus of lap secondary beam base muscle in cast-in-place section of prefabricated primary and secondary beam, includes many additional hanging muscle (2), two prefabricated secondary beam (3) and prefabricated main girder (1), its characterized in that: the additional hanging rib (2) is composed of a protruding portion and two parallel portions, the protruding portion is located in an upper overlapping layer of the prefabricated main beam (1), the two parallel portions are located at the bottoms of the two prefabricated secondary beams (3), and the protruding portion and the parallel portions form an inclination angle of 60 degrees.

2. The reinforcing device for the lap joint secondary beam bottom rib in the cast-in-place section of the prefabricated primary and secondary beam is characterized in that a plurality of first prefabricated secondary beam bottom ribs (4) and two second prefabricated secondary beam bottom ribs (7) are arranged at the bottoms of the two prefabricated secondary beams (3), the two second prefabricated secondary beam bottom ribs (7) are positioned at two sides of the first prefabricated secondary beam bottom ribs (4), and the additional hanging ribs (2) are connected with the first prefabricated secondary beam bottom ribs (4) through steel wire binding.

3. The reinforcement device for the lap joint secondary beam bottom rib in the cast-in-place section of the prefabricated primary and secondary beam as claimed in claim 2, wherein a plurality of bottom short ribs (6) are connected to the bottoms of two prefabricated secondary beams (3), a reserved bottom rib connector (5) corresponding to the bottom short ribs (6) is connected to the lower end of the prefabricated main beam (1), the reserved bottom rib connector (5) is connected with the bottom short ribs (6), and the bottom short ribs (6) are connected with the bottom rib (7) of the second prefabricated secondary beam.

4. The reinforcing device for the lap joint secondary beam bottom rib in the cast-in-place section of the prefabricated primary and secondary beam as claimed in claim 2, characterized in that the additional hanging rib (2) and the first prefabricated secondary beam bottom rib (4) in the cast-in-place section adopt the same specification of reinforcing steel bars.

5. A reinforcing device for the lap joint secondary beam bottom rib in the cast-in-situ section of the prefabricated primary and secondary beam as claimed in claim 1, characterized in that the length of the middle straight section of the additional suspension rib (2) is twice the width of the prefabricated secondary beam (3).