CN219137990U

CN219137990U - Hinged connection node structure of precast concrete primary and secondary beams

Info

Publication number: CN219137990U
Application number: CN202320017289.2U
Authority: CN
Inventors: 唐毅; 刘磊; 吴天骄; 黄浩; 陈专文; 高傑; 宋洋
Original assignee: CMCU Engineering Co Ltd
Current assignee: CMCU Engineering Co Ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-06-06
Anticipated expiration: 2033-01-04

Abstract

The utility model relates to a hinged connection node structure of a precast concrete main and secondary beam, which comprises a precast concrete main beam and a precast concrete secondary beam, wherein a connection plate for secondary beam installation is reserved in the precast concrete main beam, the connection plate comprises a web plate which is vertically arranged and a flange which is horizontally arranged, the web plate is positioned in the middle of the flange and is vertical to the flange, the right side of the connection plate extends outside and is used for being connected with the precast concrete secondary beam, a pre-buried plate with a U-shaped structure is pre-buried at the bottom of the precast concrete secondary beam, which is close to the precast concrete main beam, the U-shaped opening of the pre-buried plate faces the precast concrete main beam, the pre-buried plate is used for being connected with the connection plate, and the U-shaped opening of the pre-buried plate corresponds to a through notch on the precast concrete secondary beam. Compared with the traditional shelving type node, the hinged connection node structure provided by the utility model has the advantages that the precast concrete main beam is not weakened by a notch, and the integrity of the precast main beam is ensured.

Description

Hinged connection node structure of precast concrete primary and secondary beams

Technical Field

The utility model belongs to the technical field of connection structures of concrete primary and secondary beams, and relates to a hinged connection node structure of precast concrete primary and secondary beams.

Background

A large number of building parts in the assembled building are processed and manufactured in a production workshop, the assembly construction is carried out on site, and the installation difficulty and the concrete pouring quality of the components in the connecting node area can directly influence the construction progress and quality of the engineering. Therefore, on the premise of ensuring the structural safety, a simple and convenient method for connecting the precast concrete primary and secondary beam nodes is sought, and the technical problem is needed to be solved. The connection of the primary and secondary beam joints in the prior prefabricated assembly structure is most convenient and fast, namely, the cattle arm plates at the ends of the secondary beams are directly placed at the grooves of the main beams. However, the conventional shelving node has the following problems: the precast girder groove causes local weakness of the component, so that the precast girder is easy to break, crack and other quality problems during hoisting or transportation; the main beam and the secondary beam are easy to generate dislocation, torsion and overturning in the construction process, and the safety and the stability of the whole structure are adversely affected.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a structure of a hinge joint of a precast concrete main and sub beam, which can solve the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a hinged joint node structure of precast concrete owner secondary beam, including precast concrete girder and precast concrete secondary beam, the reservation has the connecting plate that is used for the secondary beam installation in the precast concrete girder, the connecting plate includes the web of vertical setting and the edge of a wing that the level set up, the web is located the middle part of edge of a wing and is perpendicular with the edge of a wing, the right side of connecting plate extends and is used for being connected with precast concrete secondary beam outside, precast concrete secondary beam is close to the pre-buried board that has U type structure of bottom pre-buried of precast concrete girder, the U type opening of pre-buried board is towards precast concrete girder, the pre-buried board is used for being connected with the connecting plate, the U type opening of pre-buried board is corresponding with the notch that link up on the precast concrete secondary beam.

Further, the part of the web extending outside is positioned at the U-shaped opening of the embedded plate, the flanges at the two sides of the web are provided with oblong holes, the embedded plate is embedded with a fixing piece, and the fixing piece penetrates through the oblong holes to connect the embedded plate with the flanges.

Further, round holes are formed in the web plate in the precast concrete main beam at positions close to the precast concrete secondary beams for waist bar penetration.

Further, a plurality of pegs are fixed on the web plate in the precast concrete girder for enhancing the shearing bearing capacity of the connecting plate.

Further, one end of the flange connected with the embedded plate extends to a through notch beyond the end of the precast concrete secondary beam.

Further, the bottoms of the stirrups of the precast concrete secondary beams within the length range of the embedded plate are fixedly connected with the embedded plate.

Further, the upper longitudinal ribs of the precast concrete secondary beams extend into the precast concrete main beams, and the lower longitudinal ribs of the precast concrete secondary beams are fixedly connected with the embedded plates.

The utility model has the beneficial effects that:

1. compared with the traditional shelving type node, the hinged connection node structure provided by the utility model has the advantages that the precast concrete main beam is not weakened by a notch, so that the integrity of the precast main beam is ensured;

2. compared with the traditional shelving type node, the hinged connection node structure has the advantages that the whole prefabricated secondary beam is arranged on the flange of the connecting plate of the prefabricated main beam, the connection is more stable, and dislocation and torsion are not easy to occur during construction;

3. the construction difficulty is effectively reduced while the construction quality is ensured, the construction period is shortened, and the time requirements of low-carbon society and green buildings on engineering management are met.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of a hinged joint construction of the present utility model;

FIG. 2 is a cross-sectional view taken along section A-A in FIG. 1;

FIG. 3 is a cross-sectional view of section B-B of FIG. 1;

fig. 4 is a schematic diagram of a connection structure of the connection board and the embedded board.

Reference numerals:

1. prefabricating a concrete girder; 2. precast concrete secondary beams; 3. post-pouring the laminated layer; 4. a connecting plate; 41. a web; 42. a flange; 5. a peg; 6. embedding a plate; 7. a high-strength bolt; 8. prefabricating longitudinal ribs of a concrete girder; 9. prefabricating concrete girder stirrups; 10. waist tendons; 11. precast concrete secondary beam upper longitudinal ribs; 12. precast concrete secondary beam stirrups; 13. and prefabricating longitudinal ribs at the lower part of the concrete secondary beam.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the utility model; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present utility model, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 4, a structure of a hinged connection node of a precast concrete main beam and a precast concrete secondary beam is disclosed, which comprises a precast concrete main beam 1 and a precast concrete secondary beam 2, wherein the precast concrete main beam 1 is precast in a factory or on site, and a connection plate 4 for installing the precast concrete secondary beam 2 is reserved in the precast concrete main beam 1. The connecting plate 4 comprises a vertically arranged web 41 and a horizontally arranged flange 42, the web 41 is positioned in the middle of the flange 42 and is perpendicular to the flange 42, and the longitudinal section of the connecting plate 4 is of an inverted T-shaped structure. About two thirds of the connection plates 4 are pre-buried inside the precast concrete main girder 1, and about one third of the connection plates 4 are exposed to the outside for connection with the precast concrete secondary girder 2. The precast concrete secondary beam 2 is close to the pre-buried board 6 that has U type structure of the bottom of precast concrete girder 1, and the U type opening of pre-buried board 6 is towards precast concrete girder 1, and pre-buried board 6 is used for being connected with connecting plate 4.

The precast concrete secondary beam 2 is provided with a through notch at the end facing the precast concrete main beam 1 and is provided with a rough surface.

The U-shaped opening of the embedded plate 6 corresponds to a through notch on the precast concrete secondary beam 2.

The part of the web 41 extending outside is positioned at the U-shaped opening of the embedded plate 6, long round holes are formed in flanges 42 on two sides of the web 41, bolt holes are formed in the embedded plate 6, and the high-strength bolts 7 sequentially penetrate through the bolt holes and the long round holes to connect the embedded plate 6 with the flanges 42. The embedded plate 6 is a whole U-shaped plate and is embedded in the precast concrete secondary beam 2 in advance together with the high-strength bolts 7.

Circular holes are formed in the web 41 in the precast concrete main beam 1 at positions close to the precast concrete secondary beams 2 for the waist bars 10 to penetrate. And simultaneously, the bolts 5 are welded on the webs 41 positioned in the precast concrete main beams 1 for enhancing the shearing bearing capacity of the connecting plates 4.

One end of the flange 42 connected with the embedded plate 6 extends to a through notch beyond the end of the precast concrete secondary beam 2 so as to achieve the effect of no bottom die in later pouring. The left side of web 41 is flush with the left side of flange 42 and the right side of web 41 is shorter than the right side of flange 42.

The bottom of the precast concrete secondary beam stirrup 12 within the length range of the embedded plate 6 is welded with the embedded plate 6, so that the connection of the embedded plate 6 is ensured.

The precast concrete secondary beam 2's precast concrete secondary beam upper portion is indulged muscle 11 and is stretched into in the precast concrete girder 1 to satisfy anchor length, precast concrete secondary beam lower part is indulged muscle 13 and is welded with embedded plate 6, further improves embedded plate 6's stability, has realized the effective anchor of precast concrete secondary beam lower part and is indulged muscle 13, and is convenient for install and construction.

The precast concrete girder 1 is also internally provided with a plurality of precast concrete girder longitudinal ribs 8 and precast concrete girder stirrups 9 which are uniformly spaced.

The working principle of the utility model is as follows:

after the prefabricated precast concrete main beam 1 and the precast concrete secondary beam 2 are placed, the embedded plate 6 and the flange 42 are fixedly connected through the high-strength bolts 7, and a gap is reserved between the precast concrete main beam 1 and the precast concrete secondary beam 2 after connection.

After the precast concrete secondary beam 2 is placed on the connecting plate 4 of the precast concrete main beam 1, a certain height gap exists between the precast concrete main beam 1 and the precast concrete secondary beam 2, rough surfaces are arranged on the tops of the precast concrete main beam 1 and the precast concrete secondary beam 2 and on two sides of the gap, fine stone concrete is finally used for pouring into a whole, and the post-pouring laminated layer 3 is completed, wherein the expansion rate of the concrete used for pouring is more than or equal to 0.030% in 14 days.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.

Claims

1. The utility model provides a hinge joint node structure of precast concrete owner secondary beam which characterized in that: including precast concrete girder (1) and precast concrete secondary beam (2), reserve in precast concrete girder (1) connecting plate (4) that are used for the secondary beam installation, connecting plate (4) are including web (41) of vertical setting and the edge of a wing (42) that the level set up, web (41) are located the middle part of edge of a wing (42) and perpendicular with edge of a wing (42), the right side of connecting plate (4) extends and is used for being connected with precast concrete secondary beam (2) outside, precast concrete secondary beam (2) are close to the pre-buried board (6) of precast concrete girder (1) bottom pre-buried have U type structure, the U type opening of pre-buried board (6) is used for being connected with connecting plate (4), the U type opening of pre-buried board (6) is corresponding with the notch that link up on precast concrete secondary beam (2).

2. A precast concrete primary and secondary beam hinge joint construction according to claim 1, wherein: the part of the web (41) extending outside is positioned at the U-shaped opening of the embedded plate (6), long round holes are formed in flanges (42) on two sides of the web (41), fixing pieces are embedded in the embedded plate (6), and the fixing pieces penetrate through the long round holes to connect the embedded plate (6) with the flanges (42).

3. A precast concrete primary and secondary beam hinge joint construction according to claim 1, wherein: a round hole is formed in a web plate (41) in the precast concrete main beam (1) at a position close to the precast concrete secondary beam (2) for the waist rib (10) to penetrate through.

4. A precast concrete primary and secondary beam hinge joint construction according to claim 1, wherein: a plurality of pegs (5) are fixed on a web plate (41) in the precast concrete girder (1) and used for enhancing the shearing bearing capacity of the connecting plate (4).

5. A precast concrete primary and secondary beam hinge joint construction according to claim 1, wherein: the end of the flange (42) connected with the embedded plate (6) extends to a through notch beyond the end of the precast concrete secondary beam (2).

6. A precast concrete primary and secondary beam hinge joint construction according to claim 1, wherein: the bottoms of the precast concrete secondary beam stirrups (12) within the length range of the embedded plate (6) are fixedly connected with the embedded plate (6).

7. A precast concrete primary and secondary beam hinge joint construction according to claim 1, wherein: the upper longitudinal ribs (11) of the precast concrete secondary beam (2) extend into the precast concrete main beam (1), and the lower longitudinal ribs (13) of the precast concrete secondary beam are fixedly connected with the embedded plate (6).