CN217557225U - Assembly plug-in type steel secondary beam and concrete main beam's connected node structure - Google Patents

Abstract

The utility model discloses a connection node structure for assembling a plug-in profiled steel secondary beam and a concrete primary beam, which comprises a concrete primary beam and a profiled steel secondary beam. A mounting groove is reserved on the top of the concrete primary beam, and the outer side of the concrete primary beam is correspondingly installed. The groove is connected with an installation template for positioning the profiled steel secondary beam. The mounting template is provided with mounting holes. The shape of the mounting hole is consistent with the cross-sectional shape of the insertion end of the profiled steel secondary beam. The profiled steel secondary beam passes through the mounting hole and is inserted into the installation slot. , An accommodation cavity with an open top is formed between the insertion end of the profiled steel secondary beam and the installation template, and the accommodation cavity is filled with a cement-based grouting layer. By reserving installation grooves on the concrete main beam and setting installation templates on the outside of the concrete corresponding to the installation grooves, the positioning of the profiled steel secondary beams is realized, and the cement-based grouting layer is filled in the accommodating cavity to fix the profiled steel secondary beams. The connection nodes of the steel secondary beam and the concrete main beam are assembled to improve construction efficiency and reduce environmental pollution.

Description

A connection node structure of an assembled insert-type steel secondary beam and a concrete main beam

technical field

The utility model belongs to the field of construction, in particular to a connection node structure for assembling a plug-in type steel secondary beam and a concrete main beam.

Background technique

The conventional method of connecting the secondary beam of the profiled steel with the main concrete beam is that the secondary secondary beam of the profiled steel is directly supported on the side pick ears of the main concrete beam. The force of this connection method is clear, but the on-site formwork is cumbersome, and the installation of the secondary profiled steel beam needs to wait for the concrete main beam. After the beam reaches a certain strength, the formwork can be removed before it can be hoisted. The construction period is long and affects the clear height and appearance of the workshop.

Therefore, the existing technology still needs to be further developed and improved.

Utility model content

In view of various deficiencies in the prior art, in order to solve the above-mentioned problems, a connection node structure of an assembled plug-in steel secondary beam and a concrete main beam is proposed. The installation groove is reserved on the concrete main beam and the corresponding installation groove is arranged on the outer side of the concrete. The template is installed to realize the positioning of the profiled steel secondary beam, and the cement-based grouting layer is filled in the accommodating cavity to fix the profiled steel secondary beam, which realizes the assembly of the connection node of the composite structure plug-in profiled steel secondary beam and the concrete main beam, and improves the construction efficiency. , reducing environmental pollution.

To achieve the above object, the utility model provides the following technical solutions:

A connection node structure for assembling a plug-in profiled steel secondary beam and a concrete primary beam, comprising a concrete primary beam and a profiled steel secondary beam, a mounting groove is reserved on the top of the concrete primary beam, and a corresponding mounting groove is connected to the outer side of the concrete primary beam for positioning The installation template of the section steel secondary beam, the installation template is provided with installation holes, the shape of the installation hole is consistent with the cross-sectional shape of the insertion end of the section steel secondary beam, the section steel secondary beam passes through the installation hole and is inserted into the installation groove, and the installation template is connected with the concrete main beam, A accommodating cavity with an open top is formed between the profile steel secondary beams, and the accommodating cavity is filled with a cement-based grouting layer.

Further, the installation groove is an L-shaped installation groove located on one side of the top of the concrete main beam, and a single shaped steel secondary beam passes through the installation hole and is inserted into the L-shaped installation groove.

In another preferred technical solution, the installation grooves are square installation grooves running through both sides of the top of the concrete main beam, and two installation templates are connected to the square installation grooves on both sides of the top of the concrete main beam. There are two section steel secondary beams and the two section steel secondary beams are symmetrically arranged on both sides of the mid-span position of the concrete main beam.

Further, after the profiled steel secondary beam passes through the installation template and is inserted into the installation groove, the top surface of the profiled steel secondary beam main body and the top surface of the concrete main beam are on the same plane.

Further, the top of the insertion end of the profiled steel secondary beam is provided with a right-angle notch.

Further, the right-angle notch is formed by weakening the entire upper flange and part of the web at the insertion end of the secondary beam of the profiled steel.

Further, the right-angle notch is weakened by the full height upper flange and the quarter height web at the insertion end of the secondary beam of the profiled steel.

Further, the insertion depth of the profiled steel secondary beam into the concrete main beam is greater than one third of the concrete main beam beam width and less than half of the concrete main beam beam width.

Further, a polytetrafluoroethylene coating is provided on the outer surface of the insertion end of the shaped steel secondary beam.

Further, the thickness of the cement-based grouting layer is greater than or equal to 20mm.

To sum up, the present invention has the following beneficial effects compared to the prior art:

(1) Positioning the profiled steel secondary beam by setting installation grooves at the node connections of the concrete main beam and setting up mounting templates outside the mounting grooves, forming a accommodating cavity between the mounting groove, the insertion end of the profiled steel secondary beams and the mounting template. The cement-based grouting layer filled in the accommodating cavity can effectively connect the profiled steel secondary beam and the concrete main beam, realize the assembly and plug-in connection of the profiled steel secondary beam and the concrete main beam, save the embedded parts and pick ears, and the component method is simple and convenient. It is conducive to the layout of process pipelines in large power plant workshops, saves space and has a clean appearance, realizes the assembly of the connection nodes of the composite structure plug-in section steel secondary beam and the concrete main beam, improves the construction efficiency and reduces environmental pollution.

(2) A polytetrafluoroethylene coating is arranged on the outer surface of the insertion end of the section steel secondary beam to ensure that the connecting node has a certain rotation ability.

(3) The top of the profiled steel secondary beam and the concrete main beam is kept at the same height, which is convenient for setting floors of different heights later.

(4) The connection node structure weakens the upper flange and web of the insertion end of the secondary beam of the profiled steel, and reduces the adverse effect of the insertion end of the secondary beam of the profiled steel on the upper concrete during the force rotation process.

(5) The insertion method can choose two different situations: a single section steel secondary beam is inserted into the concrete main beam unilaterally and double steel secondary beams are inserted into the concrete main beam symmetrically on both sides, so as to meet the actual needs of the project.

Description of drawings

Fig. 1 is the top view of the connection node structure of the assembling insert-type steel secondary beam and the concrete main beam in the specific embodiment 1;

Fig. 2 is a sectional view at A-A in Fig. 1;

Fig. 3 is the structural representation of the installation template in the specific embodiment 1;

Fig. 4 is the top view of the connection node structure of the assembling insert-type steel secondary beam and the concrete main beam in the specific embodiment 2;

Figure 5 is a sectional view at B-B in Figure 4;

In the drawings: 100, concrete main beam; 110, installation groove; 200, profiled steel secondary beam; 300, installation template; 310, installation hole; 320, fixing hole; 400, cement-based grouting layer.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Other similar embodiments obtained by technical personnel without creative work shall fall within the scope of protection of the present application. In addition, the directional terms mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only the directions of reference to the drawings. Therefore, the directional terms used are used to illustrate rather than limit the present invention. Utility model creation.

Specific Example 1

A connection node structure for assembling a plug-in section steel secondary beam and a concrete main beam, as shown in Figures 1-3, includes a concrete main beam 100 and a section steel secondary beam 200, and a mounting slot 110 is reserved on the top of the concrete main beam 100, The outer side of the concrete main beam 100 is connected with an installation template 300 for positioning the profiled steel secondary beam 200 corresponding to the mounting groove 110. The mounting template 300 is provided with an installation hole 310. The secondary beam 200 passes through the installation hole 310 and is inserted into the installation groove 110. A receiving cavity with an open top is formed between the installation groove 110, the insertion end of the profiled steel secondary beam 200 and the installation template 300, and the receiving cavity is filled with a cement-based grouting layer. 400. In this embodiment, the installation template 300 is provided with a plurality of fixing holes 320 , and the installation template 300 is fixedly connected to the outer surface of the concrete main beam 100 through cement nails passing through the fixing holes 320 . In the actual construction process, the installation grooves 110 are reserved at the joints of the concrete main beams 100 by using extruded plastic boards with bubble sections.

Further, the installation groove 110 is an L-shaped installation groove 110 located on one side of the top of the concrete main beam 100 , and the single-shaped steel secondary beam 200 is inserted into the L-shaped installation groove 110 through the installation hole 310 on the installation template 300 . The grouting layer 400 has a C-shaped structure corresponding to the single section steel secondary beam 200 . In the actual construction process, the installation template 300 is first fixed on the outer surface of the concrete main beam 100 corresponding to the L-shaped installation groove 110 by cement nails, and the single-shaped steel secondary beam 200 passes through the installation hole 310 on the installation template 300 and is inserted into the installation template 300. In the L-shaped installation groove 110, a cement-based grouting material is poured into the accommodating cavity formed between the profiled steel secondary beam 200, the concrete main beam 100 and the installation template 300, and the cement-based grouting material solidifies to form a cement-based grouting layer 400. Because the cement-based grouting material has the characteristics of early strength, high fluidity, micro-expansion, etc., and its compression ratio is low, and its flexibility is large, the cement-based grouting layer 400 thus formed is very suitable for the connection between the concrete main beam 100 and the profiled steel secondary beam 200. stress performance.

Further, after the profiled steel secondary beam 200 passes through the installation template 300 and is inserted into the installation groove 110, the top surface of the main body of the profiled steel secondary beam 200 and the top surface of the concrete primary beam 100 are on the same plane, so as to facilitate the later setting of floor slabs of different heights. .

Further, the top of the insertion end of the section steel sub-beam 200 is provided with a right-angle notch, so as to reduce the adverse effect of the insertion end of the section steel sub-beam 200 on the upper concrete.

Further, the right-angle notch is formed by weakening the entire upper flange and part of the web at the insertion end of the section steel secondary beam 200 .

Further, the right-angle gap is weakened by the upper flange of the full height of the inserted end of the section steel secondary beam 200 and the quarter-height web plate, which reduces the mechanical properties of the connection joint between the section steel secondary beam 200 and the concrete main beam 100 without affecting the mechanical properties. The adverse effect of the insertion end of the section steel secondary beam 200 on the upper concrete during the force rotation process is eliminated.

Further, the insertion depth of the profiled steel secondary beam 200 into the concrete main beam 100 is greater than one-third of the concrete main beam 100 beam width, and less than one-half of the concrete main beam 100 beam width, ensuring that the profiled steel secondary beam 200 and the concrete main beam 100. Effective connection of concrete main beam 100 connection nodes.

Further, the outer surface of the insertion end of the profiled steel secondary beam 200 is provided with a polytetrafluoroethylene coating to ensure that the connecting node has a certain rotation ability.

Further, the thickness of the cement-based grouting layer 400 is greater than or equal to 20 mm. Specifically, the length, width, and height of the installation groove 110 correspond to a length, width, and height of 20 mm or more at the insertion end of the profiled steel secondary beam 200 , so as to ensure that the profiled steel secondary beam 200 is normally assembled and inserted into the concrete main beam 100 .

Specific embodiment 2

The same place between this embodiment and the specific embodiment 1 will not be repeated, and the difference is:

As shown in FIG. 4-5 , the installation slot 110 is a square installation slot 110 penetrating both sides of the top of the concrete main beam 100 , and two installation templates 300 are connected to the two sides of the top of the concrete main beam 100 corresponding to the square installation slot 110 . Two profiled steel secondary beams 200 are positioned on the formwork 300 and are symmetrically arranged on both sides of the concrete main beam 100 at the mid-span. The cement-based grouting layer 400 corresponds to the two profiled steel secondary beams 200 in an I-shaped structure. Through the above arrangement, the situation that double steel secondary beams are bilaterally symmetrically inserted into the concrete main beam 100 is satisfied.

The present utility model has been described in detail above, and the above are only preferred embodiments of the present utility model, and should not limit the scope of implementation of the present utility model, that is, all equivalent changes and modifications made according to the scope of the present application should still belong to the scope of the present utility model. within the scope of the present invention.

Claims (10)

1. The utility model provides an assembly bayonet shaped steel secondary beam and concrete girder's connected node structure, a serial communication port, including concrete girder and shaped steel secondary beam, the top of concrete girder reserves the mounting groove, the outside of concrete girder corresponds the mounting groove and is connected with the erection template that is used for fixing a position the shaped steel secondary beam, be provided with the mounting hole on the erection template, the shape of mounting hole is identical with the cross-sectional shape that the shaped steel secondary beam inserted the end, the shaped steel secondary beam passes the mounting hole and inserts to the mounting groove in, the mounting groove, be formed with open-top's the chamber that holds between the end of inserting of shaped steel secondary beam and the erection template, it has cement base grout layer to hold the intracavity packing.

2. The structure of a joint of assembling the insertion-type steel secondary beam with the concrete main beam according to claim 1, wherein the installation groove is an L-shaped installation groove at one side of the top of the concrete main beam, and the single steel secondary beam passes through the installation hole and is inserted into the L-shaped installation groove.

3. The connection node structure for assembling the inserted type steel secondary beams and the main concrete beam according to claim 1, wherein the mounting grooves are square mounting grooves penetrating through two sides of the top of the main concrete beam, two mounting templates are connected to two sides of the top of the main concrete beam corresponding to the square mounting grooves, two steel secondary beams are positioned on the two mounting templates, and the two steel secondary beams are symmetrically arranged on two sides of the midspan position of the main concrete beam.

4. The connection node structure of the assembled plug-in type steel secondary beam and the concrete main beam according to any one of claims 1 to 3, wherein after the steel secondary beam passes through the installation template and is inserted into the installation groove, the top surface of the steel secondary beam main body and the top surface of the concrete main beam are on the same plane.

5. The connecting joint structure for assembling the plug-in type steel secondary beam and the concrete main beam according to claim 1, wherein a right-angle notch is formed in the top of the plug-in end of the steel secondary beam.

6. The structure of a connection node for assembling an inserted section steel secondary beam and a concrete main beam according to claim 5, wherein the right-angle notch is formed by weakening all upper flanges and part of a web plate at the insertion end of the section steel secondary beam.

7. The structure of a connection node for assembling an inserted section steel secondary beam and a concrete main beam according to claim 6, wherein the right-angle opening is formed by weakening an upper flange with the whole height and a web with the quarter height at the insertion end of the section steel secondary beam.

8. The structure of a connection node between an assembled plug-in type steel secondary beam and a concrete main beam according to claim 1, wherein the insertion depth of the steel secondary beam into the concrete main beam is greater than one third of the width of the concrete main beam and less than one half of the width of the concrete main beam.

9. The structure of a connection node of an assembled plug-in type steel secondary beam and a concrete main beam according to claim 1, wherein a polytetrafluoroethylene coating is arranged on the outer surface of the insertion end of the steel secondary beam.

10. The connection node structure of the assembled plug-in type steel secondary beam and the concrete main beam according to claim 1, wherein the thickness of the cement-based grouting layer is greater than or equal to 20mm.

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