CN209837469U - Connecting structure of main beam and secondary beam of stiff concrete - Google Patents

Abstract

The utility model discloses a connection structure between a main beam and a secondary beam of stiffened concrete, comprising: a main beam H-shaped connector pre-embedded in the main beam and a secondary beam H-shaped connector pre-embedded in the secondary beam. The secondary beam H-shaped connector is connected to the main beam H-shaped connector, the extension direction of the main beam H-shaped connector is perpendicular to the extension direction of the main beam, and the extension direction of the secondary beam H-shaped connector is parallel to the The extension direction of the main beam H-shaped connector; the end surface of the main beam H-shaped connector located outside the main beam near the ground is provided with a steel supporting plate, and the steel supporting plate extends horizontally in a direction away from the main beam , protruding from the end of the main beam H-shaped connector away from the main beam. The utility model eliminates the support equipment when the main beam of stiffened concrete is connected with the secondary beam, and saves equipment purchase cost and labor cost input.

Description

A connection structure between main beam and secondary beam of stiffened concrete

technical field

The utility model relates to the technical field of connection between a building main beam and a secondary beam, in particular to a connection structure of a stiff concrete main beam and a secondary beam.

Background technique

"13th Five-Year Plan for Prefabricated Building Action Plan" Jianke [2017] No. 77 proposes to improve the technical system, establish a prefabricated building technology system and key technologies, and an evaluation mechanism for supporting components, and sort out advanced, mature and reliable new technologies and new products As well as new processes, prefabricated building technology and product announcements are regularly released.

Advocate to increase research and development efforts, study the basic theory, technical system and construction method of multi-story prefabricated concrete buildings with a high assembly rate, and study the application of high-performance concrete, high-strength steel bars, energy dissipation and shock absorption, and prestressing technologies in prefabricated buildings in the application.

In the prior art, when the main beam of stiffened concrete is connected to the secondary beam, the supporting equipment is used to fix the secondary beam at the required height, and the H-shaped connector of the main beam pre-embedded in the main beam is connected to the pre-embedded secondary beam of the secondary beam. The H-shaped connectors are fixed by connecting plates and high-strength bolts to realize the connection between the secondary beam and the main beam. However, a large amount of purchase cost is required for the support equipment, and manpower is required to control the support equipment during the construction stage, resulting in labor costs. , resulting in higher costs.

Contents of the invention

The purpose of the utility model is to provide a connection structure between the main beam and the secondary beam of stiffened concrete, which eliminates the supporting equipment when the main beam of stiffened concrete is connected with the secondary beam, and saves the cost of equipment purchase and labor cost.

The technical scheme provided by the utility model is as follows:

A connection structure between a main beam and a secondary beam of stiffened concrete, comprising: a main beam H-shaped connector pre-embedded in the main beam and a secondary beam H-shaped connector pre-embedded in the secondary beam, and the secondary beam H-shaped connection The connecting piece is connected with the main beam H-shaped connector, the extension direction of the main beam H-shaped connector is perpendicular to the extension direction of the main beam, and the extension direction of the secondary beam H-shaped connector is parallel to the secondary beam H-shaped connector. In the extension direction of the connector, the end surface of the main beam H-shaped connector located outside the main beam near the ground is provided with a steel supporting plate, and the steel supporting plate extends horizontally in a direction away from the main beam, protruding from the The H-shaped connector of the main beam is far away from the end of the main beam.

In the above structure, by setting a steel supporting plate under the H-shaped connector of the main beam, when the secondary beam is connected to the main beam, the H-shaped connector of the secondary beam at the end of the secondary beam is directly placed on the steel supporting plate , can realize the support for the secondary beam, without adopting additional support equipment for supporting the secondary beam, so that the purchase cost of the support equipment and labor cost can be avoided.

Preferably, thin steel plates are welded on the end surface of the main beam H-shaped connector located outside the main beam away from the ground; the main beam H-shaped connector includes a first main beam flange, a second main beam flange and a main beam web plate, the first main beam flange and the second main beam flange are parallel to each other, and the main beam webs are respectively perpendicular to the first main beam flange and the second main beam flange, and the thin steel plate is welded to the first main beam flange The end surface away from the ground, and the thin steel plate covers the end surface of the first main beam flange away from the ground; the end surface of the secondary beam H-shaped connector located outside the secondary beam is welded with a thin steel plate, the The cross-sectional shape of the thin steel plate is U-shaped, and its opening direction faces away from the ground; the H-shaped connector of the secondary beam includes: the first beam flange, the second beam flange and the secondary beam web, and the first beam flange parallel to the flange of the second beam, and the web of the secondary beam is perpendicular to the flange of the first beam and the flange of the second beam respectively, the thin steel plate is welded on the end face of the flange of the first beam away from the ground, and the The thin steel plate covers the end surface of the primary beam flange away from the ground.

By arranging thin steel plates on the H-shaped connectors of the main beam and the H-shaped connectors of the secondary beams, when the upper side of the main beam and the secondary beams that require asymmetrical concrete is used to pour concrete into the cast-in-place layer, the thin steel plates can separate the adjacent secondary beams. The gap between the beams is blocked to prevent concrete from leaking between adjacent secondary beams, and the thin steel plate is used as a formwork for the cast-in-place layer.

Preferably, along the extending direction of the main girder, both ends of the main girder web of the main girder H-shaped connector located outside the main girder are provided with stiffening plates, and the stiffening plates are vertically The direction extends up and down until it is respectively connected with the first main girder flange and the second main girder flange; the stiffening plate is closely attached to the outer wall of the main girder.

The stiffening plate can not only increase the strength of the H-shaped connector of the main girder, but also serve as a formwork for the manufacture of the main girder.

Preferably, the connection structure between the main beam and the secondary beam of the stiffened concrete further includes: a connecting plate, on which at least 2 connection holes are arranged on the connecting plate; At least one main beam connection hole is opened on the main beam web, and at least one secondary beam connection hole is opened on the secondary beam H-shaped connector located outside the secondary beam. The sum of the number of beam connection holes is equal to the number of the connection holes; a part of the connection holes and the main beam connection holes are fixed by bolt connection, and the other part of the connection holes and the secondary beam connection holes are connected by bolts fixed.

Preferably, the end of the first main beam flange protruding from one end of the main beam is welded to the end of the first primary beam flange protruding from one end of the secondary beam; the end of the second main beam flange protruding from one end of the main beam part is welded with the end of the second beam flange protruding from one end of the secondary beam.

Preferably, the H-shaped connector of the secondary beam is welded to the main stress tendon of the secondary beam in the secondary beam.

Preferably, there are two steel supporting plates, and along the extension direction of the main girder, the steel supporting plates are respectively arranged at both ends of the H-shaped connector of the main girder.

By setting a steel supporting plate at both ends of the H-shaped connector of the main beam, when the H-shaped connector of the secondary beam is erected on the steel supporting plate, there are two stress points, so that the H-shaped connector of the secondary beam is overlapped More stable when on steel pallet.

The connection structure between the main beam and the secondary beam of stiffened concrete provided by the utility model can bring the following beneficial effects:

The connection structure of the main beam and the secondary beam of the stiffened concrete of the utility model supports the H-shaped connector of the secondary beam through the steel supporting plate, which eliminates the support equipment used to support the secondary beam in the prior art, and saves the operation during construction The labor cost input of supporting equipment. By setting the thin steel plate as the formwork of the cast-in-place layer, it is avoided that the concrete leaks from between the adjacent secondary beams when the cast-in-place layer is poured.

Description of drawings

In the following, the preferred embodiment will be described in a clear and understandable manner with reference to the accompanying drawings, and the above-mentioned characteristics, technical features, advantages and implementation methods of the connection structure between the main beam and the secondary beam of stiffened concrete will be further explained.

Fig. 1 is the front view after the main beam of stiffened concrete is connected with the secondary beam;

Fig. 2 is a sectional view along the A-A direction of Fig. 1;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is a structural schematic diagram at the main beam;

Figure 5 is a schematic structural view of the secondary beam;

Fig. 6 is a structural schematic view of the thin steel plate of the main girder.

Explanation of reference numbers:

1-main beam, 2-secondary beam, 2a-main tendon of secondary beam, 3-H-type connector of main beam, 3a-first main beam flange, 3b-second main beam flange, 3c-main beam web, 3d -Connection hole of main beam, 4-H-type connector of secondary beam, 4a-Flange of primary beam, 4b-Flange of secondary beam, 4c-Web of secondary beam, 4d-Connecting hole of secondary beam, 5-Connection plate, 6- High-strength bolts, 7-steel supporting plate, 7a-free end of steel supporting plate, 8-thin steel plate, 9-bolt nail, 10-stiffening plate.

Detailed ways

In order to more clearly illustrate the embodiment of the utility model or the technical solutions in the prior art, the specific implementation of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model, and those skilled in the art can also obtain other accompanying drawings according to these drawings without creative work, and Get other implementations.

In order to make the drawings concise, the parts related to the utility model are only schematically shown in each drawing, and they do not represent the actual structure of the product.

【Example 1】

As shown in Figures 1 to 6, Embodiment 1 discloses a connection structure between a main beam and a secondary beam of stiffened concrete. In this embodiment, primary beams 2 are connected to both sides of the main beam 1, specifically including: The main beam H-shaped connector 3 embedded in the main beam 1 and the secondary beam H-shaped connector 4 embedded in the secondary beam 2, the main beam H-shaped connector 3 and the secondary beam H-shaped connector 4 are all made of steel , the extension direction of the main beam H-shaped connector 3 is perpendicular to the extension direction of the main beam 1 and both ends of the main beam H-shaped connector 3 extend out of the main beam 1, and the secondary beam H-shaped connector 4 and the main beam H-shaped The connecting piece 3 is connected, and the extending direction of the H-shaped connecting piece 4 of the secondary beam is parallel to the extending direction of the H-shaped connecting piece 3 of the secondary beam.

In order to ensure that the load on the secondary beam 2 can be transferred to the secondary beam H-shaped connector 4, the length of the welded overlapping part of the secondary beam H-shaped connector 4 and the secondary beam main stress rib 2a in the secondary beam 2 (that is, along the The overlapping length in the horizontal direction shown in Figure 5) is not less than 5d, and the width of the weld is not less than 0.6d, where d refers to the diameter of the main tendon 2a of the secondary beam. The value of the actual overlapping length can be determined according to specific engineering requirements and actual conditions, as long as it meets the building code, and will not be repeated here.

As shown in Figures 1 and 4, the end surface of the main beam H-shaped connector 3 outside the main beam 1 near the ground is provided with a steel supporting plate 7, and the steel supporting plate 7 extends horizontally in a direction away from the main beam 1, that is, The steel pallets 7 on the left and right sides of the main beam 1 extend horizontally towards opposite directions, and the steel pallets 7 protrude from the end of the main beam H-shaped connector 3 on the corresponding side away from the main beam 1, for example, as shown in the figure As shown in 4, the free end 7a of the steel supporting plate located on the left side of the H-shaped connector 3 of the main beam protrudes a certain distance from the left end of the H-shaped connector 3 of the main beam, so as to ensure that the steel supporting plate 7 can provide for the secondary beam 2. Support, eliminating the supporting equipment supporting the secondary beam 2.

Of course, in order to provide better support for the secondary beam 2, as shown in FIG. 1 (the vertical direction in FIG. 3 ), the steel pallets 7 are respectively arranged at both ends of the H-shaped connector 3 of the main beam, so that the support of the H-shaped connector 4 of the secondary beam by the steel pallet 7 is more stable. It is also possible to set more steel pallets 7, such as 3 pieces, 4 pieces, etc., the more steel pallets 7 are used to support the secondary beam H-shaped connector 4, the secondary beam H-shaped connector 4 rides on the steel pallet The better the stability on plate 7.

[Example 2]

As shown in Figures 1 to 6, Embodiment 2 is based on Embodiment 1. In Embodiment 2, a thin steel plate 8 is welded on the end surface of the main beam H-shaped connector 3 located outside the main beam 1 away from the ground, and is located on the A thin steel plate 8 is welded on the end surface of the secondary beam H-shaped connector 4 outside the secondary beam 2 away from the ground. Specifically, as shown in FIG. The direction specifically includes a horizontal part and a vertical part vertically arranged at both ends of the horizontal part, and the free end of the vertical part of the thin steel plate 8 is flush with the upper end surface of the main beam.

As shown in Figure 4, the main beam H-shaped connector 3 includes a first main beam flange 3a, a second main beam flange 3b, and a main beam web 3c, and the first main beam flange 3a and the second main beam flange 3b are arranged parallel to each other and to the horizontal plane , and the main beam web 3c is perpendicular to the first main beam flange 3a and the second main beam flange 3b respectively, that is, the main beam web 3c is set perpendicular to the horizontal plane, and the thin steel plate 8 is welded to the end surface of the first main beam flange 3a away from the ground by spot welding (that is, the upper end surface of the first main beam flange 3a in Figure 4), and the horizontal part of the thin steel plate 8 covers the end surface of the first main beam flange 3a away from the ground, as can be seen from the top view of Figure 3, it is located on the first main beam flange The area of the horizontal part of the thin steel plate 8 on 3a is larger than the area of the first main beam flange 3a, and the upper end surface of the first main beam flange 3a is provided with several studs 9, and the studs 9 pass through the thin steel plate 8.

As shown in Figure 5, the secondary beam H-shaped connector 4 includes: the first beam flange 4a, the second beam flange 4b and the secondary beam web 4c, the first beam flange 4a and the second beam flange 4b are parallel to each other and to the horizontal plane set, and the secondary beam web 4c is perpendicular to the first beam flange 4a and the second beam flange 4b respectively, that is, the secondary beam web 4c is set perpendicular to the horizontal plane, and the thin steel plate 8 is spot welded to the end surface of the first beam flange 4a away from the ground (the upper end surface of the first beam flange 4a in Figure 5), and the horizontal part of the thin steel plate 8 covers the end surface of the first beam flange 4a away from the ground, as can be seen from the top view of Figure 3, it is located on the first beam flange 4a The area of the horizontal part of the thin steel plate 8 is larger than the area of the first beam flange 4a, and the upper end surface of the second main beam flange 4a is provided with several studs 9, and the studs 9 pass through the thin steel plate 8.

The end of one end of the first main beam flange 3a protruding from the main beam 1 is welded with the end of the first primary beam flange 4a extending out of the secondary beam 2 on the same side to form a rigid joint. The second main beam flange 3b The end extending from one end of the main beam 1 is welded with the end of the second secondary beam flange 4b extending from one end of the secondary beam 2 to form a rigid joint.

Specifically, as shown in Figure 1, the main beam H-shaped connector 3 and the secondary beam H-shaped connector 4 of this embodiment are fixedly connected through a steel connecting plate 5, and the connecting plate 5 is provided with 4 connecting holes. Wherein, the four connection holes are distributed in a matrix according to the horizontal direction and the vertical direction respectively. As shown in Figure 4, two main beam connection holes 3d arranged along the vertical direction are opened on the main beam web 3c of the main beam H-shaped connector 3 located outside the main beam 1, as shown in Figure 5, located at Two secondary beam connection holes 4d arranged along the vertical direction are opened on the secondary beam web 4c of the secondary beam H-shaped connector 4 outside the secondary beam 2 . Among them, in Fig. 1, the two connecting holes relatively to the right and the connecting hole 3d of the main beam are connected and fixed by high-strength bolts 6, and the two connecting holes relatively to the left and the connecting hole 4d of the secondary beam are connected and fixed by high-strength bolts 6, finally realizing The fixing of the H-type connector 3 of the main beam and the H-type connector 4 of the secondary beam.

In the actual construction process, the vertical part of the thin steel plate 8 on the adjacent secondary beam H-shaped connector 4 and the vertical part of the thin steel plate 8 on the adjacent main beam H-shaped connector 3 abut without gaps, And jointly constitute the template when the cast-in-place layer is poured, so as to prevent concrete from leaking from the gap between adjacent secondary beams 2 during pouring.

[Example 3]

As shown in Figure 1, Figure 3 and Figure 4, Embodiment 3 is based on Embodiment 1 or Implementation 2. Embodiment 3 is located along the extension direction of the main beam 1 (the vertical direction in Figure 3) and is located on the main beam 1. Both ends of the main beam web 3c of the external main beam H-shaped connector 3 are provided with stiffening plates 10, and the stiffening plates 10 extend up and down along the vertical direction (that is, the vertical direction in Figure 4) until they are respectively connected to the first The main beam flange 3 a and the second main beam flange 3 b are connected, and the stiffening plate 10 is closely attached to the outer wall of the main beam 1 . When the main girder 1 is manufactured in the factory, the stiffening plate 10 can be used as a template.

It should be noted that the above embodiments can be freely combined as required. The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (7)

1. A connecting structure of a main beam and a secondary beam of stiffened concrete, comprising: a main beam H-type connector pre-embedded in the main beam and a secondary beam H-type connector pre-embedded in the secondary beam, the secondary beam H The H-shaped connector of the main beam is connected with the H-shaped connector of the main beam, the extension direction of the H-shaped connector of the main beam is perpendicular to the extension direction of the main beam, and the extension direction of the H-shaped connector of the secondary beam is parallel to the The extension direction of the H-shaped connector is characterized by: The end surface of the main beam H-shaped connector located outside the main beam near the ground is provided with a steel supporting plate, and the steel supporting plate extends horizontally in a direction away from the main beam, protruding from the main beam H-shaped connector end away from the main beam. 2. The connecting structure of the main beam and the secondary beam of the stiffened concrete according to claim 1, characterized in that: A thin steel plate is welded on the end surface of the main girder H-shaped connector located outside the main girder away from the ground; The main beam H-shaped connector includes a first main beam flange, a second main beam flange and a main beam web, the first main beam flange and the second main beam flange are parallel to each other, and the main beam webs are respectively perpendicular to the The first main beam flange and the second main beam flange, the thin steel plate is welded to the end surface of the first main beam flange away from the ground, and the thin steel plate covers the end surface of the first main beam flange away from the ground; A thin steel plate is welded on the end surface of the secondary beam H-shaped connector located outside the secondary beam away from the ground, the cross-sectional shape of the thin steel plate is U-shaped, and its opening direction faces away from the ground; The secondary beam H-shaped connector includes: a primary beam flange, a second secondary beam flange and a secondary beam web, the primary beam flange and the second secondary beam flange are parallel to each other, and the secondary beam webs are respectively perpendicular to the For the first beam flange and the second beam flange, the thin steel plate is welded on the end surface of the first beam flange away from the ground, and the thin steel plate covers the end surface of the first beam flange away from the ground. 3. The connecting structure of the main beam and the secondary beam of stiffened concrete according to claim 2, characterized in that: Along the extension direction of the main beam, both ends of the main beam web of the main beam H-shaped connector located outside the main beam are provided with stiffening plates, and the stiffening plates extend up and down along the vertical direction Until it is respectively connected with the first main girder flange and the second main girder flange; The stiffening plate is closely attached to the outer wall of the main girder. 4. The connecting structure of the main beam and the secondary beam of stiffened concrete according to claim 2, is characterized in that, also comprises: A connection plate, the connection plate is provided with at least 2 connection holes; At least one main beam connecting hole is opened on the main beam web of the main beam H-shaped connector located outside the main beam, and at least one main beam connecting hole is opened on the secondary beam H-shaped connector located outside the secondary beam. A secondary beam connecting hole, the sum of the number of the main beam connecting hole and the secondary beam connecting hole is equal to the number of the connecting hole; A part of the connecting holes and the connecting holes of the main beam are fixed through bolt connection, and another part of the connecting holes and the secondary beam connecting holes are fixed through bolt connection. 5. The connecting structure of the main beam and the secondary beam of stiffened concrete according to claim 2, characterized in that: The end of the first main beam flange protruding from one end of the main beam is welded to the end of the primary beam flange protruding from one end of the secondary beam; The end of the second main beam flange protruding from one end of the main beam is welded to the end of the second secondary beam flange protruding from one end of the secondary beam. 6. The connecting structure of the main beam and the secondary beam of the stiffened concrete according to claim 2, characterized in that: The H-shaped connector of the secondary beam is welded to the main stress reinforcement of the secondary beam in the secondary beam. 7. The connecting structure of the main beam and the secondary beam of the stiffened concrete according to claim 1, characterized in that: There are two steel supporting plates, and along the extension direction of the main beam, the steel supporting plates are respectively arranged at both ends of the H-shaped connector of the main beam.