A connecting structure between a precast external wall panel and an assembled steel frame beam

Abstract

The present invention discloses a connection structure between a precast external wall panel and an assembled steel frame beam, which includes a first connecting member and a second connecting member. The first connecting member includes an angle steel and a central steel plate. The second connecting member includes a load-bearing connecting plate inserted into a plugging groove. There are a first circular hole and a waist-shaped hole at the position where the load-bearing connecting plate is connected to the assembled steel frame beam. The setting position of the first circular hole is close to the angle steel, and the position of the waist-shaped hole is far from the angle steel. A second circular hole is opened at the corresponding position of the assembled steel frame beam and fixed by bolts. A third circular hole is opened on the assembled steel frame beam. The diameter of the third circular hole is not greater than the minimum diameter of the waist-shaped hole and is fixed by bolts passing through the waist-shaped hole and the third circular hole in sequence; in the present invention, the setting of the plugging groove provides an in-plane deformation space for the precast concrete external wall panel, and the waist-shaped hole provides an out-of-plane deformation space for the precast concrete external wall panel. This connection structure can effectively absorb the inter-story displacement.

Description

Technical Field

[0001] The present invention relates to the technical field of civil building structures, and particularly to a connection structure between a precast external wall panel and an assembled steel frame beam. Background Art

[0002] The enclosure system of an assembled steel structure building generally adopts an external hanging method to connect with the main structure. Angle steel and Z-shaped connectors are provided with oblong holes, and bolts are used to externally hang the external wall panel on the main structure through these connectors. The design concept of this connection structure with oblong holes in the connectors is to meet the requirement of the coordinated deformation between the external wall panel and the main structure. Under the action of frequent earthquakes, the bolts embedded in the wall panel are allowed to rotate, and under the action of rare earthquakes, the bolts are allowed to slide in the oblong holes. For example, Patent CN103883038A, "Connection Component and Construction Method between Autoclaved Lightweight Aerated Concrete External Wall Panel and Steel Beam", provides this connection structure form. This patent controls the bearing capacity of the welded joint to realize the rotation and sliding of the bolts under different seismic intensity conditions, that is, when the seismic action is greater than the bearing capacity of the welded joint, the welded joint cracks and fails, and at this time, the sliding function of the bolts is activated. It should be noted here that once the bolt sliding function is activated, it is no longer reversible. There is a typical seismic wave observation record. It can be seen that it takes a certain amount of time for the seismic wave to decay from the peak acceleration to 0. In addition, from historical earthquake observation records, aftershocks often follow the main shock, especially when the magnitude is large, the magnitude and number of aftershocks cannot be ignored. In Patent CN103883038A, due to the activation of the bolt sliding function, the precast external wall panel and the steel frame structure are in a free sliding connection mode during the aftershocks after the main shock. The inertial force generated by the self-weight of the precast external wall panel will repeatedly act on the connection part, easily causing damage to the connection structure and triggering secondary disasters.

[0003] At the same time, the precast concrete external wall panel itself has a large lateral stiffness. If this part of the stiffness is fully utilized, the enclosure structure can play a damping role on the main structure, improving the seismic performance of the whole building and avoiding waste of resources.

[0004] To solve the above problems, the present invention provides a connection structure between a precast external wall panel and an assembled steel frame beam to solve the problem that the previous connection components have poor seismic resistance and are easy to be damaged. Summary of the Invention

[0005] The purpose of the present invention is to provide a connection structure between a precast external wall panel and an assembled steel frame beam to achieve the purpose of improving the seismic effect.

[0006] To achieve the above purpose, the present invention provides the following solutions:

[0007] A connecting structure between a precast external wall panel and an assembled steel frame beam, comprising a first connecting piece arranged on the external wall panel and a second connecting piece arranged on the assembled steel frame beam. The first connecting piece includes an angle steel and a central steel plate arranged on the angle steel and provided with a plug-in groove. The second connecting piece includes a load-bearing connecting plate inserted into the plug-in groove. The part where the load-bearing connecting plate is connected to the assembled steel frame beam has a first circular hole and a waist-shaped hole. The setting position of the first circular hole is close to the angle steel, and the position of the waist-shaped hole is far from the angle steel. A second circular hole is opened at the position corresponding to the first circular hole on the assembled steel frame beam and fixed by a bolt. A third circular hole is opened at the position corresponding to the waist-shaped hole on the assembled steel frame beam. The diameter of the third circular hole is not greater than the minimum diameter of the waist-shaped hole and is fixed by a bolt sequentially passing through the waist-shaped hole and the third circular hole.

[0008] Preferably, one end of the plug-in groove away from the other side of the angle steel is an octagonal enlarged end.

[0009] Preferably, the load-bearing connecting plate includes a first connecting plate, a second connecting plate, a third connecting plate, and a fourth connecting plate vertically arranged on the first connecting plate. The second connecting plate and the third connecting plate are arranged relatively parallel. The fourth connecting plate is arranged between the second connecting plate and the third connecting plate and is connected to the second connecting plate and the third connecting plate. The fourth connecting plate is inserted into the plug-in groove.

[0010] Preferably, a polytetrafluoroethylene coating is provided on the surface of the first connecting plate connected to the assembled steel frame beam.

[0011] Preferably, a plurality of first through holes are opened on the surface of the angle steel in contact with the external wall panel. At the position corresponding to the external wall panel of the first through holes, a plurality of mounting holes matching the through holes are opened, and the external wall panel and the angle steel are fixed by bolts sequentially passing through the first through holes and the mounting holes.

[0012] Preferably, a second through hole is opened at the position corresponding to the fourth connecting plate on the other side of the angle steel, and the bolt passes through the second through hole and abuts against the fourth connecting plate.

[0013] Preferably, at least two second through holes are provided and are respectively located on both sides of the plug-in groove.

[0014] Preferably, the bolts are all high-strength pre-tightening bolts.

[0015] Preferably, the high-strength pre-tightening bolt includes a high-strength screw rod, a high-strength nut, and a spring washer.

[0016] Preferably, the central steel plate is welded to the angle steel.

[0017] The present invention has achieved the following technical effects compared with the prior art:

[0018] 1. In the present invention, the insertion slot is provided to offer an in-plane deformation space for the precast concrete exterior wall panel, and the kidney-shaped hole is provided to offer an out-of-plane deformation space for the precast concrete exterior wall panel. This connection structure can effectively absorb the inter-story displacement, thereby improving the seismic effect. The high-strength bolt on the upper side of the angle steel is tightened against the bearing connection node, and the insertion slot of the central steel plate is spliced and connected with the bearing connection plate. This connection structure increases the energy dissipation capacity of the connection components, reduces the in-plane movement of the precast concrete exterior wall panel, and improves the installation accuracy. All these connection components can be prefabricated in the factory, which improves the construction progress. It realizes the industrialized production of buildings, improves the construction speed, and shortens the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Attached Figure 1 is a schematic structural view of the present invention;

[0021] Attached Figure 2 is a schematic structural view of the exterior wall panel of the present invention;

[0022] Attached Figure 3 is a schematic structural view of the angle steel of the present invention;

[0023] Attached Figure 4 is a schematic structural view of the bearing connection plate of the present invention;

[0024] Attached Figure 5 is a schematic structural view of the prefabricated steel frame beam of the present invention;

[0025] Attached Figure 6 is a schematic structural view of the connection structure between the angle steel and the exterior wall panel of the present invention;

[0026] Attached Figure 7 is a schematic structural view of the connection structure between the angle steel and the bearing connection plate of the present invention;

[0027] Attached Figure 8 is a schematic structural view of the connection structure between the bearing connection plate and the prefabricated steel frame beam of the present invention;

[0028] Attached Figure 9 is a schematic side view of the structure of the present invention;

[0029] Among them, 1. Exterior wall panel; 2. Angle steel; 3. Bolt; 4. High-strength pre-tightening bolt; 5. Prefabricated steel frame beam; 6. Load-bearing connecting plate; 7. Central steel plate; 8. Installation hole; 9. Second through hole; 10. First through hole; 11. First circular hole; 12. Waist-shaped hole; 13. Second circular hole. Specific implementation mode

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0031] The purpose of the present invention is to provide a connection structure between a prefabricated exterior wall panel and a prefabricated steel frame beam, so as to achieve the purpose of improving the seismic effect.

[0032] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation modes.

[0033] Reference Figures 1 to 9 , a connection structure between a prefabricated exterior wall panel and a prefabricated steel frame beam, includes a first connecting member provided on the exterior wall panel 1 and a second connecting member provided on the prefabricated steel frame beam 5. The first connecting member includes an angle steel and a central steel plate 7 provided on the angle steel 2 and provided with a plug-in groove. The second connecting member includes a load-bearing connecting plate inserted into the plug-in groove. The positions where the load-bearing connecting plate is connected to the prefabricated steel frame beam have a first circular hole and a waist-shaped hole. The setting position of the first circular hole is close to the angle steel, and the position of the waist-shaped hole is far from the angle steel. A second circular hole 13 is provided at the position corresponding to the first circular hole 11 on the prefabricated steel frame beam and fixed by bolts. A third circular hole is provided at the position corresponding to the waist-shaped hole 12 on the prefabricated steel frame beam. The diameter of the third circular hole is not greater than the minimum diameter of the waist-shaped hole and is fixed by bolts passing through the waist-shaped hole and the third circular hole in sequence; in the present invention, the provision of the plug-in groove provides an in-plane deformation space for the precast concrete exterior wall panel, and the waist-shaped hole provides an out-of-plane deformation space for the precast concrete exterior wall panel. This connection structure can effectively absorb the inter-story displacement, thereby improving the seismic effect. The high-strength bolts on the upper side of the angle steel are tightened against the load-bearing connection node, and the plug-in groove of the central steel plate is spliced and connected with the load-bearing connecting plate. This connection structure increases the energy dissipation capacity of the connection components, reduces the in-plane movement of the precast concrete exterior wall panel, and improves the installation accuracy. These connection components can be prefabricated in the factory in advance, improving the construction progress. The industrialized production of buildings is realized, the construction speed is increased, and the construction period is shortened.

[0034] Reference Figure 3 One end of the insertion slot away from the other side of the angle steel is an octagonal expansion end, which is convenient for the insertion of the load-bearing connecting plate.

[0035] Reference Figure 4 The load-bearing connecting plate 6 includes a first connecting plate, a second connecting plate vertically arranged on the first connecting plate, a third connecting plate and a fourth connecting plate. The second connecting plate and the third connecting plate are arranged relatively parallel, and the fourth connecting plate is arranged between the second connecting plate and the third connecting plate and is connected to the second connecting plate and the third connecting plate. The fourth connecting plate is inserted into the insertion slot.

[0036] Furthermore, polytetrafluoroethylene coatings with friction energy dissipation performance are provided on the surfaces of the first connecting plate that are connected to the prefabricated steel frame beam.

[0037] Reference Figures 1 to 3 On the surface of the angle steel in contact with the exterior wall hanging plate, a number of first through holes 10 are provided. At positions corresponding to the exterior wall hanging plate of the first through holes 10, a number of mounting holes 8 matching the through holes are provided, and the exterior wall hanging plate and the angle steel are fixed by bolts passing through the first through holes and the mounting holes in sequence.

[0038] Reference Figure 1 At a position on the other side of the angle steel corresponding to the fourth connecting plate, a second through hole 9 is provided, and a bolt passes through the second through hole 9 and abuts against the fourth connecting plate.

[0039] Reference Figure 1 The second through holes 9 are provided with at least two, and are respectively located on both sides of the insertion slot.

[0040] Furthermore, the bolts 3 are all high-strength pre-tightening bolts 4.

[0041] Furthermore, the high-strength pre-tightening bolt 4 includes a high-strength screw rod, a high-strength nut and a spring washer.

[0042] Furthermore, the central steel plate is welded to the angle steel.

[0043] Adaptations made according to actual needs are all within the protection scope of the present invention.

[0044] It should be noted that for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A connecting structure between a precast external wall panel and an assembled steel frame beam, characterized in that It includes a first connecting member provided on the external wall panel and a second connecting member provided on the prefabricated steel frame beam. The first connecting member includes an angle steel and a central steel plate provided on the angle steel and having a plugging groove. The second connecting member includes a load-bearing connecting plate plugged in the plugging groove. The part where the load-bearing connecting plate is connected to the prefabricated steel frame beam has a first circular hole and a kidney-shaped hole. The setting position of the first circular hole is close to the angle steel, and the position of the kidney-shaped hole is far from the angle steel. A second circular hole is opened at the position corresponding to the first circular hole on the prefabricated steel frame beam and fixed by a bolt. A third circular hole is opened at the position corresponding to the kidney-shaped hole on the prefabricated steel frame beam. The diameter of the third circular hole is not greater than the minimum diameter of the kidney-shaped hole and is fixed by a bolt passing through the kidney-shaped hole and the third circular hole in sequence; One end of the plugging groove away from the other side of the angle steel is an octagonal enlarged end; The load-bearing connecting plate includes a first connecting plate, a second connecting plate vertically provided on the first connecting plate, a third connecting plate and a fourth connecting plate. The second connecting plate and the third connecting plate are arranged relatively parallel. The fourth connecting plate is arranged between the second connecting plate and the third connecting plate and connected to the second connecting plate and the third connecting plate. The fourth connecting plate is plugged in the plugging groove; A polytetrafluoroethylene coating is provided on the surface of the first connecting plate in contact with the prefabricated steel frame beam; A number of first through holes are opened on the surface of the angle steel in contact with the external wall panel. Installation holes matching the first through holes are opened at the positions corresponding to the external wall panel, and the external wall panel and the angle steel are fixed by bolts passing through the first through holes and the installation holes in sequence; Second through holes are opened at the positions corresponding to the fourth connecting plate on the other side of the angle steel, and bolts pass through the second through holes and abut against the fourth connecting plate; At least two second through holes are provided and are respectively located on both sides of the plugging groove; The bolts are all high-strength pre-tightening bolts; The high-strength pre-tightening bolt includes a high-strength screw rod, a high-strength nut and a spring washer.

2. The connecting structure between a precast external wall panel and an assembled steel frame beam according to claim 1, characterized in that, The central steel plate is welded to the angle steel.

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