Fast and easy connecting structure of anti-seismic joint of assembly type prefabricated external wall panel

Abstract

The utility model discloses a quick and easy connecting structure of an anti-seismic joint of an assembly type prefabricated external wall panel. The quick and easy connecting structure comprises a first prefabricated external wall panel, a second prefabricated external wall panel and a cast-in-place beam plate, the cast-in-place beam plate is positioned between the first and second prefabricated external wall panels; a first pre-embedded connecting structure is arranged between two adjacent surfaces of the first prefabricated external wall panel and the cast-in-place beam plate, and the first pre-embedded connecting structure and the first prefabricated external wall panel are connected through a first anti-loosening fixing structure; a second pre-embedded connecting structure is arranged between two adjacent surfaces of the second prefabricated outer wall plate and the cast-in-place beam plate, and the second pre-embedded connecting structure, the second prefabricated outer wall plate and the cast-in-place beam plate are connected through a second anti-loosening fixing structure; according to the utility model, through the self-locking function of the anti-loosening bolt pair, the bolt can be well prevented from being loosened or even pulled out due to shearing under the action of strong shock; and the problem that the prefabricated wall panel and the beam plate constraint body are inaccurate in positioning, large in error and difficult to install is solved.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building installation and connection technology, and in particular to a quick and easy connection structure for seismic-resistant joints of prefabricated exterior wall panels. Background Technology

[0002] Currently, the conventional practice for prefabricated wall panels is to hoist them into position on-site and then use grouting technology for fixing and connection. The construction method mainly includes the following steps: base treatment, grout sealing, compartmentalization, grout preparation, grout inspection, grouting, and sealing of grout outlets. Prefabricated buildings have advantages such as high construction speed, environmental friendliness and resource conservation, high design flexibility and customizability. However, during the construction process, we have also found the following shortcomings: 1. Potential problems at connection points: During assembly, the connection of wall panel joints is a weak point. Currently, the commonly used connection between precast wall panels and constrained structures such as beams or floor slabs is through pre-embedded reinforcing bars and sleeve grouting. This method requires high precision in the placement of the reinforcing bars; any deviation in position can lead to safety hazards if handled on-site (e.g., bending or sawing the reinforcing bars). Furthermore, sleeve grouting is a concealed project, making it difficult to guarantee grout density and control or inspect quality. Additionally, sleeve grouting requires on-site wet work and post-pouring curing, resulting in a complex and costly process. 2. Construction is significantly affected by the environment: Grouting operations in winter require outdoor temperatures above 5°C, and the curing temperature... The temperature must be above 10℃; during high-temperature construction, when the temperature is above 25℃, specific measures must be taken in the storage, transportation, and use of grouting materials, such as storing them in a ventilated, dry, and cool place, controlling the temperature of the mixing water, and cooling the equipment. The construction conditions are quite harsh. 3. There are many restrictions on the use of materials: the grouting material must be used up within 30 minutes of adding water. The loose grouting material mixture cannot be reused, and the remaining mixture cannot be mixed with grouting material and water again. The timeliness and standardization requirements for the use of materials are high, and the requirements for construction operation time are strict, which increases the difficulty of construction management. Utility Model Content

[0003] This utility model addresses the aforementioned problems by proposing a quick and easy connection structure for seismic-resistant joints of prefabricated exterior wall panels, thereby resolving these issues.

[0004] To solve the above-mentioned technical problems, this utility model provides a quick and easy connection structure for seismic joints of prefabricated exterior wall panels, including prefabricated exterior wall panels and cast-in-place beams and slabs as restraint bodies;

[0005] The precast exterior wall panel includes a first precast exterior wall panel and a second precast exterior wall panel; the cast-in-place beam slab is located between the first precast exterior wall panel and the second precast exterior wall panel;

[0006] The first precast exterior wall panel, the second precast exterior wall panel, and the cast-in-place beam slab adopt a concave-convex structure to achieve the alignment and splicing between the first precast exterior wall panel, the second precast exterior wall panel, and the cast-in-place beam slab, which plays a waterproof role;

[0007] A first pre-embedded connection structure is provided between two adjacent surfaces of the first prefabricated exterior wall panel and the cast-in-place beam slab, and the first pre-embedded connection structure and the first prefabricated exterior wall panel are connected by a first anti-loosening fixing structure to achieve a tight anti-loosening connection between the first prefabricated exterior wall panel and the cast-in-place beam slab.

[0008] A second pre-embedded connection structure is provided between two adjacent surfaces of the second precast exterior wall panel and the cast-in-place beam slab, and the second precast exterior wall panel and the cast-in-place beam slab are connected by a second anti-loosening fixing structure to achieve a tight anti-loosening connection between the second precast exterior wall panel and the cast-in-place beam slab.

[0009] As a preferred embodiment of the present invention, the first pre-embedded connection structure includes: a first connecting plate pre-embedded in the first precast exterior wall panel, a second connecting plate pre-embedded in the cast-in-place beam slab; and a first angle steel structure located at the front end of the first connecting plate and the second connecting plate, wherein the first connecting plate is provided with a first connecting hole, and the first angle steel structure is provided with a second connecting hole of the same diameter as the first connecting hole;

[0010] The first anti-loosening fixing structure is a first anti-loosening bolt structure. The first anti-loosening bolt structure passes through the first connecting hole of the first connecting plate and the second connecting hole of the first angle steel structure and then penetrates into the first prefabricated outer wall panel to form a tight anti-loosening connection between the first prefabricated outer wall panel and the first angle steel structure.

[0011] The first angle steel structure and the second connecting plate form a welded connection structure, ultimately forming a tight, non-loosening connection between the first precast exterior wall panel and the cast-in-place beam slab.

[0012] The second pre-embedded connection structure includes: a third connecting plate pre-embedded in the cast-in-place beam slab, a fourth connecting plate pre-embedded in the second precast exterior wall panel; and a fifth connecting plate located at the front end of the third connecting plate and the fourth connecting plate; the third connecting plate is provided with a third connecting hole, the fourth connecting plate is provided with a fourth connecting hole, the fifth connecting plate is provided with a fifth connecting hole of the same diameter as the third connecting hole, and a sixth connecting hole of the same diameter as the fourth connecting hole;

[0013] The second anti-loosening fixing structure consists of a second anti-loosening bolt structure and a third anti-loosening bolt structure. The second anti-loosening bolt structure passes through the third connecting hole of the third connecting plate and the fifth connecting hole of the fifth connecting plate and then extends into the cast-in-place beam slab. The third anti-loosening bolt structure passes through the fourth connecting hole of the fourth connecting plate and the sixth connecting hole of the fifth connecting plate and then extends into the second precast exterior wall panel, thereby forming a tight anti-loosening connection between the second precast exterior wall panel and the cast-in-place beam slab.

[0014] Furthermore, the first connecting plate and the fourth connecting plate are both steel structures, and their shapes are adapted to the pre-embedded positions of the first precast exterior wall panel and the second precast exterior wall panel, respectively; the second connecting plate and the third connecting plate are both steel structures, and their shapes are adapted to the pre-embedded positions of the cast-in-place beams and slabs.

[0015] Furthermore, the first prefabricated exterior wall panel is pre-embedded with a first pre-embedded sleeve structure that can be connected to the bottom of the first anti-loosening bolt structure;

[0016] The cast-in-place beam slab is pre-embedded with a second pre-embedded sleeve structure that can be connected to the bottom of the second anti-loosening bolt structure.

[0017] The second prefabricated exterior wall panel has a third embedded sleeve structure that can be connected to the bottom of the third anti-loosening bolt structure.

[0018] As a further preferred embodiment of this utility model, the first anti-loosening bolt structure, the second anti-loosening bolt structure, and the third anti-loosening bolt structure are all mechanical anti-loosening bolt structures, or all riveted anti-loosening bolt structures, or all friction anti-loosening bolt structures, or all structural anti-loosening bolt structures.

[0019] As a further preferred embodiment of this utility model, the first connecting hole, the second connecting hole, the third connecting hole, the fourth connecting hole, the fifth connecting hole and the sixth connecting hole are all elongated hole structures arranged horizontally, so as to adjust the installation error between the prefabricated exterior wall panel as the connecting body and the cast-in-place beam slab as the constraint body in the horizontal direction.

[0020] After adopting the above-mentioned technical improvements, this utility model has the following advantages:

[0021] 1. This utility model, through the self-locking function of the anti-loosening bolt pair, can effectively prevent bolts from being sheared loose or even pulled out under strong vibration.

[0022] 2. This utility model effectively avoids the problem of inaccurate positioning and excessive error between prefabricated wall panels and beam slab constraints, which leads to difficulty in installation;

[0023] 3. This utility model avoids the problem that the sleeve grouting connection method requires on-site wet operation and a certain curing time, which can reduce construction procedures and effectively speed up the construction progress;

[0024] 4. The structure of this utility model is environmentally friendly and pollution-free. It does not require grouting or wet work, or secondary processing. It is quickly connected by self-locking bolt pairs and angle steel, making construction fast and effectively reducing carbon emissions and preventing environmental pollution. Attached Figure Description

[0025] Figure 1 The diagram shown is a schematic representation of the overall appearance and structural installation of this utility model.

[0026] Figure 2 The diagram shown is an assembly connection diagram between the first connecting plate, the second connecting plate, and the first angle steel structure in this utility model.

[0027] Figure 3 The diagram shown is an assembly connection diagram between the third connecting plate, the fourth connecting plate, and the fifth connecting plate in this utility model.

[0028] Figure 4 The diagram shown is a structural diagram of the fifth connecting hole and the sixth connecting hole on the fifth connecting plate in this utility model;

[0029] Figure 5 The diagram shown is an external structural diagram of the self-locking bolt pair in this utility model;

[0030] The components are: 1. First precast exterior wall panel; 2. Second precast exterior wall panel; 3. Cast-in-place beam / slab; 4. First connecting plate; 5. Second connecting plate; 6. First angle steel structure; 7. First connecting hole; 8. Second connecting hole; 9. First anti-loosening bolt structure; 10. Third connecting plate; 11. Fourth connecting plate; 12. Fifth connecting plate; 13. Third connecting hole; 14. Fourth connecting hole; 15. Fifth connecting hole; 16. Sixth connecting hole; 17. Second anti-loosening bolt structure; 18. Third anti-loosening bolt structure; 19. First embedded sleeve structure; 20. Second embedded sleeve structure; 21. Third embedded sleeve structure. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] Depend on Figure 1 It can be seen that a quick and easy connection structure for seismic joints of prefabricated exterior wall panels mainly consists of prefabricated exterior wall panels and cast-in-place beams and slabs 3 as restraint bodies.

[0033] In this utility model, the prefabricated exterior wall panel includes a first prefabricated exterior wall panel 1 and a second prefabricated exterior wall panel 2; the cast-in-place beam slab 3 is located between the first prefabricated exterior wall panel 1 and the second prefabricated exterior wall panel 2; and the first prefabricated exterior wall panel 1, the second prefabricated exterior wall panel 2 and the cast-in-place beam slab 3 are connected by a concave-convex structure to achieve the alignment and splicing between the first prefabricated exterior wall panel 1, the second prefabricated exterior wall panel 2 and the cast-in-place beam slab 3.

[0034] A first embedded connection structure is provided between two adjacent surfaces of the first precast exterior wall panel 1 and the cast-in-place beam slab 3, and the first embedded connection structure and the first precast exterior wall panel 1 are connected by a first anti-loosening fixing structure to achieve a tight anti-loosening connection between the first precast exterior wall panel 1 and the cast-in-place beam slab 3.

[0035] Combination Figure 1 and Figure 2 It can be seen that in this utility model, the preferred first pre-embedded connection structure includes: a first connecting plate 4 pre-embedded at the front end of the first precast exterior wall panel 1, a second connecting plate 5 pre-embedded at the front end of the cast-in-place beam slab 3; and a first angle steel structure 6 located at the front end of the first connecting plate 4 and the second connecting plate 5. At the same time, the first connecting plate 4 is provided with a first connecting hole 7, and the first angle steel structure 6 is provided with a second connecting hole 8 with the same diameter as the first connecting hole 7.

[0036] In this utility model, the preferred first anti-loosening fixing structure is a first anti-loosening bolt structure 9. After passing through the first connecting hole 7 of the first connecting plate 4 and the second connecting hole 8 of the first angle steel structure 6, the first anti-loosening bolt structure 9 extends into the first precast exterior wall panel 1, forming a tight anti-loosening connection between the first precast exterior wall panel 1 and the first angle steel structure 6. At the same time, the first angle steel structure 6 and the second connecting plate 5 form a welded connection structure, ultimately forming a tight anti-loosening connection between the first precast exterior wall panel 1 and the cast-in-place beam slab 4.

[0037] A first embedded sleeve structure 19 is pre-embedded in the first prefabricated outer wall panel 1, which can be connected to the bottom of the first anti-loosening bolt structure 9. The first embedded sleeve structure 19 can further improve the positioning and firmness of the first anti-loosening bolt structure 9.

[0038] Combination Figure 1 and Figure 3 It can be seen that a second pre-embedded connection structure is provided between two adjacent surfaces of the second precast exterior wall panel 2 and the cast-in-place beam slab 3, and the second pre-embedded connection structure and the second precast exterior wall panel 2 and the cast-in-place beam slab 3 are connected by a second anti-loosening fixing structure to achieve a tight anti-loosening connection between the second precast exterior wall panel 2 and the cast-in-place beam slab 3.

[0039] In this utility model, the second pre-embedded connection structure includes: a third connecting plate 10 pre-embedded at the front end of the cast-in-place beam slab 3, a fourth connecting plate 11 pre-embedded at the front end of the second precast exterior wall panel 2; and a fifth connecting plate 12 located at the front ends of the third connecting plate 10 and the fourth connecting plate 11; a third connecting hole 13 is provided on the third connecting plate 10, a fourth connecting hole 14 is provided on the fourth connecting plate 11, a fifth connecting hole 15 with the same diameter as the third connecting hole 13 is provided on the fifth connecting plate 12, and a sixth connecting hole 16 with the same diameter as the fourth connecting hole 14.

[0040] In this utility model, the preferred second anti-loosening fixing structure is a second anti-loosening bolt structure 17 and a third anti-loosening bolt structure 18. The second anti-loosening bolt structure 17 passes through the third connecting hole 13 of the third connecting plate 10 and the fifth connecting hole 15 of the fifth connecting plate 12, and then extends into the cast-in-place beam slab 3. At the same time, the third anti-loosening bolt structure 18 passes through the fourth connecting hole 14 of the fourth connecting plate 11 and the sixth connecting hole 16 of the fifth connecting plate 12, and then extends into the second precast exterior wall 2, thereby forming a tight anti-loosening connection between the second precast exterior wall panel 2 and the cast-in-place beam slab 3.

[0041] A second embedded sleeve structure 20 is pre-embedded in the cast-in-place beam slab 3, which can connect to the bottom of the second anti-loosening bolt structure 17. A third embedded sleeve structure 21 is pre-embedded in the second precast exterior wall panel 2, which can connect to the bottom of the third anti-loosening bolt structure 18. The second embedded sleeve structure 20 further improves the positioning and stability of the second anti-loosening bolt structure 17, and the third embedded sleeve structure 21 further improves the positioning and stability of the third anti-loosening bolt structure 18.

[0042] In the above structure, the first connecting plate 4 and the fourth connecting plate 11 are both steel structures, and their shapes are adapted to the pre-embedded positions of the first precast exterior wall panel 1 and the second precast exterior wall panel 2, respectively; and the second connecting plate 5 and the third connecting plate 10 are both steel structures, and their shapes are adapted to the pre-embedded positions of the cast-in-place beam slab 3.

[0043] In the above structure, the first anti-loosening bolt structure 9, the second anti-loosening bolt structure 17 and the third anti-loosening bolt structure 18 are all mechanical anti-loosening bolt structures, or all riveted anti-loosening bolt structures, or all friction anti-loosening bolt structures, or all structural anti-loosening bolt structures.

[0044] Depend on Figure 5As can be seen, in the embodiments of this utility model, the self-locking bolt pair adopts a double-ended bolt structure, and its principle is as follows: the engagement angle between the double-ended bolts is α, and the angle of one rotation of the bolt is β. Therefore, when the bolt is subjected to force and becomes loose, it will drive the relative movement between the double-ended bolts as it rotates and rises along the tangent. However, α > β, and the relative movement of the double-ended bolts sliding along the friction surface will be forced to stop. That is to say, the bolt head will be locked, thereby preventing the bolt shank from rising further along the tangent and causing loosening.

[0045] Meanwhile, in the above structure, the first connecting hole 7, the second connecting hole 8, the third connecting hole 13, the fourth connecting hole 14, the fifth connecting hole 15 and the sixth connecting hole 16 are all elongated hole structures arranged horizontally. Figure 4 The elongated hole structure of the fifth connecting hole 15 and the sixth connecting hole 16 on the fifth connecting plate 12 can be seen.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A quick and easy connection structure for seismic joints of prefabricated exterior wall panels, comprising prefabricated exterior wall panels and cast-in-place beams and slabs as restraints; The precast exterior wall panel includes a first precast exterior wall panel and a second precast exterior wall panel; the cast-in-place beam slab is located between the first precast exterior wall panel and the second precast exterior wall panel; The first precast exterior wall panel, the second precast exterior wall panel, and the cast-in-place beam slab adopt a concave-convex structure to achieve the alignment and splicing between the first precast exterior wall panel, the second precast exterior wall panel, and the cast-in-place beam slab; Its features are, A first pre-embedded connection structure is provided between two adjacent surfaces of the first prefabricated exterior wall panel and the cast-in-place beam slab, and the first pre-embedded connection structure and the first prefabricated exterior wall panel are connected by a first anti-loosening fixing structure to achieve a tight anti-loosening connection between the first prefabricated exterior wall panel and the cast-in-place beam slab. A second pre-embedded connection structure is provided between two adjacent surfaces of the second precast exterior wall panel and the cast-in-place beam slab, and the second precast exterior wall panel and the cast-in-place beam slab are connected by a second anti-loosening fixing structure to achieve a tight anti-loosening connection between the second precast exterior wall panel and the cast-in-place beam slab.

2. The quick and easy connection structure for seismic-resistant joints of prefabricated exterior wall panels as described in claim 1, characterized in that, The first embedded connection structure includes: a first connecting plate embedded at the front end of the first precast exterior wall panel, a second connecting plate embedded at the front end of the cast-in-place beam slab; and a first angle steel structure located at the front end of the first connecting plate and the second connecting plate, wherein the first connecting plate is provided with a first connecting hole, and the first angle steel structure is provided with a second connecting hole of the same diameter as the first connecting hole; The first anti-loosening fixing structure is a first anti-loosening bolt structure. The first anti-loosening bolt structure passes through the first connecting hole of the first connecting plate and the second connecting hole of the first angle steel structure and then extends into the first prefabricated outer wall panel to form a tight anti-loosening connection between the first prefabricated outer wall panel and the first angle steel structure. The first angle steel structure and the second connecting plate form a welded connection structure, ultimately forming a tight, non-loosening connection between the first precast exterior wall panel and the cast-in-place beam slab. The second pre-embedded connection structure includes: a third connecting plate pre-embedded at the front end of the cast-in-place beam slab, a fourth connecting plate pre-embedded at the front end of the second precast exterior wall panel; and a fifth connecting plate located at the front ends of the third connecting plate and the fourth connecting plate; the third connecting plate is provided with a third connecting hole, the fourth connecting plate is provided with a fourth connecting hole, the fifth connecting plate is provided with a fifth connecting hole of the same diameter as the third connecting hole, and a sixth connecting hole of the same diameter as the fourth connecting hole; The second anti-loosening fixing structure consists of a second anti-loosening bolt structure and a third anti-loosening bolt structure. The second anti-loosening bolt structure passes through the third connecting hole of the third connecting plate and the fifth connecting hole of the fifth connecting plate and then extends into the cast-in-place beam slab. The third anti-loosening bolt structure passes through the fourth connecting hole of the fourth connecting plate and the sixth connecting hole of the fifth connecting plate and then extends into the second precast exterior wall panel, thereby forming a tight anti-loosening connection between the second precast exterior wall panel and the cast-in-place beam slab.

3. The quick and easy connection structure for seismic-resistant joints of prefabricated exterior wall panels as described in claim 2, characterized in that, The first connecting plate and the fourth connecting plate are both steel structures, and their shapes are adapted to the pre-embedded positions of the first precast exterior wall panel and the second precast exterior wall panel, respectively; the second connecting plate and the third connecting plate are both steel structures, and their shapes are adapted to the pre-embedded positions of the cast-in-place beam and slab.

4. The quick and easy connection structure for seismic-resistant joints of prefabricated exterior wall panels as described in claim 2, characterized in that, The first prefabricated exterior wall panel has a first embedded sleeve structure that can be connected to the bottom of the first anti-loosening bolt structure. The cast-in-place beam slab is pre-embedded with a second pre-embedded sleeve structure that can be connected to the bottom of the second anti-loosening bolt structure. The second prefabricated exterior wall panel has a third embedded sleeve structure that can be connected to the bottom of the third anti-loosening bolt structure.

5. The quick and easy connection structure for seismic-resistant joints of prefabricated exterior wall panels as described in claim 2, characterized in that, The first anti-loosening bolt structure, the second anti-loosening bolt structure, and the third anti-loosening bolt structure are all mechanical anti-loosening bolt structures, or all riveted anti-loosening bolt structures, or all friction anti-loosening bolt structures, or all structural anti-loosening bolt structures.

6. The quick and easy connection structure for seismic-resistant joints of prefabricated exterior wall panels as described in claim 2, characterized in that, The first connecting hole, the second connecting hole, the third connecting hole, the fourth connecting hole, the fifth connecting hole, and the sixth connecting hole are all elongated hole structures arranged horizontally.

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