Fish scale-shaped occlusion type prefabricated column joint suitable for UHPC cast-in-place connection
By designing fish-scale bite-type prefabricated column joints, the problem of untight casting of the prefabricated column joints is solved, and higher connection strength and construction quality are achieved.
Patent Information
- Application Number
- CN202421820632.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-30
AI Technical Summary
During the pouring of prefabricated columns, the connecting surfaces of prefabricated column joints are easily impaired, resulting in the need to improve the construction quality.
A fish scale-like bite type prefabricated column joint suitable for UHPC cast-in-place connection is designed, including a first joint and a second joint, the first joint having a plug portion, the end of the second joint having a groove, the plug portion interposed with the groove, and a cast cavity is left between the two.
Through this design, the first joint and the second joint have a mutual limit effect, which increases the connection area with the concrete, makes the casting more dense, effectively improving the connection strength of the prefabricated column joints, thereby improving the construction quality.
Smart Images
Figure CN222976085U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of precast column joints, and specifically, to a scale-shaped occlusal precast column joint suitable for UHPC cast-in-place connection. Background Art
[0002] Prefabricated buildings have the advantages of high construction efficiency, easy quality assurance, high reuse rate, etc. Therefore, their application scope is becoming wider and wider. The precast column joint is the connection part between precast column components in prefabricated buildings, and it is a key link to ensure the stable connection between precast columns and the overall structural safety. The design and construction quality of precast column joints directly affect the bearing capacity, seismic performance and durability of building structures. During the casting process of precast columns, it is inevitable that the connection surface of the precast column joint is not densely cast, and the construction quality needs to be improved. Summary of the Utility Model
[0003] The utility model provides a scale-shaped occlusal precast column joint suitable for UHPC cast-in-place connection, which solves the problem that in the related technology, during the casting process of precast columns, it is inevitable that the connection surface of the precast column joint is not densely cast, and the construction quality needs to be improved.
[0004] The technical solution of the utility model is as follows: A scale-shaped occlusal precast column joint suitable for UHPC cast-in-place connection, which is characterized in that it includes:
[0005] A first joint, the first joint has a plug-in part;
[0006] A second joint, the end of the second joint has a groove, the plug-in part of the first joint is inserted into the groove of the second joint, and there is a casting cavity between the plug-in part of the first joint and the groove of the second joint.
[0007] The plug-in part of the first joint is a regular prism frustum structure, and the shape of the groove on the second joint matches the shape of the plug-in part of the first joint.
[0008] The plug-in part of the first joint is a regular square prism frustum structure.
[0009] The side wall of the plug-in part of the first joint is a first inclined surface, and a group of first occlusal key grooves are arranged on the first inclined surface, and all the first occlusal key grooves are arranged in a scale shape.
[0010] The bottom of the first occlusal key groove is a second inclined surface, the included angle α between the second inclined surface and the first inclined surface is an acute angle, and the end of the second inclined surface far away from the axis of the first joint intersects with the first inclined surface.
[0011] The side wall of the first engaging keyway near one end of the first joint axis is a third inclined plane, and the included angle β between the third inclined plane and the second inclined plane is an obtuse angle.
[0012] The side wall of the upper groove of the second joint is a fourth inclined plane, and a set of second engaging keyways are arranged on the fourth inclined plane, and all the second engaging keyways are arranged in a fish scale shape.
[0013] The bottom of the second engaging keyway is a fifth inclined plane, the included angle γ between the fifth inclined plane and the fourth inclined plane is an acute angle, and one end of the fifth inclined plane close to the second joint axis intersects with the fourth inclined plane.
[0014] The side wall of the second engaging keyway far from one end of the second joint axis is a sixth inclined plane, and the included angle θ between the sixth inclined plane and the fifth inclined plane is an obtuse angle.
[0015] The first engaging keyway and the second engaging keyway are arranged in one-to-one correspondence.
[0016] The working principle and beneficial effects of the present utility model are as follows: The first joint has a plug-in part; the end of the second joint has a groove, the plug-in part of the first joint is plugged into the groove of the second joint, and there is a casting cavity between the plug-in part of the first joint and the groove of the second joint. During installation, the groove of the second joint is below the plug-in part of the first joint. Compared with the connection surfaces of the first joint and the second joint both being flat, when the plug-in part of the first joint is inserted into the groove of the second joint, concrete is cast in the casting cavity between the plug-in part and the groove. In this way, mutual limiting effects can be generated between the first joint and the second joint, and the connection areas between the first joint and the concrete and between the second joint and the concrete can be increased, and the casting is more dense, which can effectively improve the connection strength of the precast column joint, thereby improving the construction quality. Brief Description of the Drawings
[0017] The above characteristics, technical features, advantages and their implementation manners of the present utility model will be further described below in a clear and understandable manner in conjunction with the drawings of the preferred embodiments.
[0018] Figure 1 It is a structural schematic diagram in one direction of the present utility model.
[0019] Figure 2 It is a structural schematic diagram in another direction of the present utility model.
[0020] Figure 3 It is a structural schematic diagram of the first joint in the present utility model.
[0021] Figure 4 It is a sectional view of the first joint in the present utility model.
[0022] Figure 5 This is a schematic structural diagram of the second joint in the present utility model.
[0023] Figure 6 This is a cross-sectional view of the second joint in the present utility model.
[0024] In the figure: 1. First joint; 2. Second joint; 3. First inclined surface; 4. First engagement keyway; 5. Second inclined surface; 6. Third inclined surface; 7. Fourth inclined surface; 8. Second engagement keyway; 9. Fifth inclined surface; 10. Sixth inclined surface. Specific embodiments
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific embodiments of the present 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. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can be obtained.
[0026] To make the drawings concise, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".
[0027] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0028] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0029] Example, refer to Figures 1 to 2, which is an embodiment of the present utility model, proposes a fish-scale occlusal precast column joint suitable for UHPC in-situ connection, including a first joint 1 and a second joint 2. The first joint 1 has a plug-in part; the end of the second joint 2 has a groove. The plug-in part of the first joint 1 is inserted into the groove of the second joint 2, and there is a casting cavity between the plug-in part of the first joint 1 and the groove of the second joint 2. During installation, the groove of the second joint 2 is below the plug-in part of the first joint 1. Compared with the connection surfaces of the first joint 1 and the second joint 2 being flat, inserting the plug-in part of the first joint 1 into the groove of the second joint 2 and pouring concrete into the casting cavity between the plug-in part and the groove can make the first joint 1 and the second joint 2 generate a mutual limiting effect, and can increase the connection area between the first joint 1 and the concrete and between the second joint 2 and the concrete, making the pouring more dense, effectively improving the connection strength of the precast column joint, and thus improving the construction quality.
[0030] Further, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown, the plug-in part of the first joint 1 is a regular frustum-shaped structure, and the shape of the groove on the second joint 2 matches the shape of the plug-in part of the first joint 1. The plug-in part of the first joint 1 and the groove on the second joint 2 are both regular shapes, which are simpler and more convenient to install.
[0031] Further, the plug-in part of the first joint 1 is a regular square frustum-shaped structure. As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown, the upper and lower end faces of the plug-in part of the first joint 1 are both squares, and the side walls are all isosceles trapezoids. The bottom and top of the groove on the second joint 2 are both squares, and the side walls are all isosceles trapezoids. The four side walls of the first joint 1 and the four side walls of the second joint 2 generate a mutual limiting effect. On the premise of ensuring that the density of the concrete poured between the first joint 1 and the second joint 2 can meet the use requirements, reducing the number of side walls of the regular frustum-shaped structure as much as possible can reduce the processing cost of the first joint 1 and the second joint 2.
[0032] Further, as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the side wall of the insertion part of the first joint 1 is the first inclined surface 3, and a group of first engaging key grooves 4 are formed on the first inclined surface 3. All the first engaging key grooves 4 are arranged in a fish-scale pattern. Six rows of first engaging key grooves 4 are arranged along the height direction on each side wall. The number of first engaging key grooves 4 in each row gradually increases from the end close to the second joint 2 to the other end, and the first engaging key grooves 4 in adjacent rows are staggered, presenting an overall fish-scale arrangement. During pouring, the concrete will fill the first engaging key grooves 4, which can further increase the connection area between the first joint 1 and the concrete, making the pouring more dense and further improving the construction quality.
[0033] Furthermore, as Figure 3 and Figure 4 shown, the bottom of the first engaging key groove 4 is the second inclined surface 5. The included angle α between the second inclined surface 5 and the first inclined surface 3 is an acute angle, and the end of the second inclined surface 5 far from the axis of the first joint 1 intersects with the first inclined surface 3. The bottom of the first engaging key groove 4 has a certain slope. During pouring, the second inclined surface 5 at the bottom of the first engaging key groove 4 and the self-leveling first inclined surface 3 form a certain included angle, which can effectively prevent the generation of air bubbles and make the pouring more dense.
[0034] Furthermore, as Figure 3 and Figure 4 shown, the side wall of the first engaging key groove 4 near the axis of the first joint 1 is the third inclined surface 6. The included angle β between the third inclined surface 6 and the second inclined surface 5 is an obtuse angle. During pouring, the cooperation between the second inclined surface 5 and the third inclined surface 6 is beneficial to the discharge of air in the first engaging key groove 4, making the pouring more dense.
[0035] Furthermore, as Figure 1 、 Figure 2 、 Figure 5 and Figure 6 shown, the side wall of the groove on the second joint 2 is the fourth inclined surface 7, and a group of second engaging key grooves 8 are formed on the fourth inclined surface 7. All the second engaging key grooves 8 are arranged in a fish-scale pattern. Six rows of second engaging key grooves 8 are arranged along the height direction on each side wall. The number of second engaging key grooves 8 in each row gradually increases from the bottom of the groove to the top of the groove, and the second engaging key grooves 8 in adjacent rows are staggered, presenting an overall fish-scale arrangement. During pouring, the concrete will fill the second engaging key grooves 8, which can further increase the connection area between the second joint 2 and the concrete, making the pouring more dense and further improving the construction quality.
[0036] Furthermore, as Figure 5 and Figure 6As shown, the bottom of the second engaging keyway 8 is a fifth inclined surface 9. The included angle γ between the fifth inclined surface 9 and the fourth inclined surface 7 is an acute angle, and one end of the fifth inclined surface 9 close to the axis of the second joint 2 intersects with the fourth inclined surface 7. The bottom of the second engaging keyway 8 has a certain slope. During pouring, the fifth inclined surface 9 at the bottom of the second engaging keyway 8 forms a certain included angle with the self-leveling fourth inclined surface 7, which can effectively prevent the generation of bubbles and make the pouring more dense.
[0037] Furthermore, as Figure 5 and Figure 6 shown, the side wall of the second engaging keyway 8 at the end far from the axis of the second joint 2 is a sixth inclined surface 10. The included angle θ between the sixth inclined surface 10 and the fifth inclined surface 9 is an obtuse angle. During pouring, the cooperation between the fifth inclined surface 9 and the sixth inclined surface 10 is beneficial to the discharge of air in the second engaging keyway 8 and makes the pouring more dense.
[0038] Furthermore, as Figure 3 and Figure 5 shown, the first engaging keyways 4 and the second engaging keyways 8 are arranged in one-to-one correspondence. The number of the first engaging keyways 4 and the second engaging keyways 8 on each side wall is equal and they are symmetrically arranged up and down, so that the force between the concrete and the first joint 1 and between the concrete and the second joint 2 is more balanced and the connection strength is higher.
[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.
Claims
1. A fish-scale bite-type prefabricated column joint suitable for UHPC cast-in-place connection, characterized by: include, A first connector (1), the first connector (1) having a plug-in portion; A second joint (2), the end of the second joint (2) having a groove, the plug-in portion of the first joint (1) being plugged into the groove of the second joint (2), and a casting cavity being left between the plug-in portion of the first joint (1) and the groove of the second joint (2); The plug-in portion of the first joint (1) is a regular prism-shaped structure, and the shape of the groove on the second joint (2) matches the shape of the plug-in portion of the first joint (1); The side wall of the plug-in portion of the first joint (1) is a first inclined surface (3), and a group of first bite key grooves (4) are provided on the first inclined surface (3), and all the first bite key grooves (4) are arranged in a fish scale shape.
2. The fish-scale interlocking prefabricated column joint suitable for UHPC cast-in-place connection according to claim 1, characterized in that: The plug-in portion of the first joint (1) is a regular quadrangular pyramid structure.
3. The fish-scale interlocking prefabricated column joint suitable for UHPC cast-in-place connection according to claim 1, characterized in that: The bottom of the first engaging keyway (4) is a second inclined surface (5), the angle α between the second inclined surface (5) and the first inclined surface (3) is an acute angle, and the end of the second inclined surface (5) away from the axis of the first joint (1) intersects with the first inclined surface (3).
4. The fish-scale bite-type prefabricated column joint suitable for UHPC cast-in-place connection according to claim 3, characterized in that: The side wall of the first engaging keyway (4) at one end close to the axis of the first joint (1) is a third inclined surface (6), and the included angle β between the third inclined surface (6) and the second inclined surface (5) is an obtuse angle.
5. The fish-scale bite-type prefabricated column joint suitable for UHPC cast-in-place connection according to claim 1, characterized in that: The side wall of the groove on the second joint (2) is a fourth inclined surface (7), and a group of second bite key grooves (8) are formed on the fourth inclined surface (7), and all the second bite key grooves (8) are arranged in a fish scale shape.
6. The fish-scale bite-type prefabricated column joint suitable for UHPC cast-in-place connection according to claim 5, characterized in that: The bottom of the second engaging keyway (8) is a fifth inclined surface (9), the angle γ between the fifth inclined surface (9) and the fourth inclined surface (7) is an acute angle, and an end of the fifth inclined surface (9) close to the axis of the second joint (2) intersects with the fourth inclined surface (7).
7. The fish-scale bite-type prefabricated column joint suitable for UHPC cast-in-place connection according to claim 6, characterized in that: The side wall of the second engaging keyway (8) at one end away from the axis of the second joint (2) is a sixth inclined surface (10), and the angle θ between the sixth inclined surface (10) and the fifth inclined surface (9) is an obtuse angle.
8. The fish-scale bite-type prefabricated column joint suitable for UHPC cast-in-place connection according to claim 5, characterized in that: The first bite key groove (4) and the second bite key groove (8) are arranged in a one-to-one correspondence.