A cast-in-place concrete box column

Abstract

The application discloses a perfusion concrete box column, which comprises horizontal plates and vertical plates used in cooperation, the horizontal plates and the vertical plates are arranged perpendicularly to each other, two horizontal plates and two vertical plates form a mouth-shaped frame structure, a reinforcing bar assembly is arranged in the mouth-shaped frame structure, a notched groove is arranged on the vertical plate, the notched groove is used for tightly connecting the horizontal plate and the vertical plate, a locking column is arranged between the horizontal plate and the vertical plate, fastening mechanisms for tightly locking the horizontal plate, the vertical plate and the locking column are arranged in the horizontal plate and the vertical plate, the fastening mechanisms comprise horizontal clamping grooves and vertical clamping grooves arranged on the locking column, grouting holes and exhaust air channels penetrating through two sides of the horizontal plate and the vertical plate are arranged on the horizontal plate and the vertical plate. The perfusion concrete box column can realize the formation of a stable mouth-shaped frame structure formed by two horizontal plates and two vertical plates by rotating the worm shafts on four worm and worm gear driving structures, and the problem of low assembly efficiency caused by the need to rotate many nuts in the prior art is avoided.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a cast-in-place concrete box column. Background Technology

[0002] Box columns are widely used in high-rise buildings, long-span bridges, heavy industrial plants and large public buildings due to their large moment of inertia and excellent bending and torsional resistance. In order to further improve the load-bearing capacity, stiffness and fire resistance of box columns, concrete is often poured into the box columns in engineering to form steel-concrete composite components, namely cast-in-place box columns. During the construction of cast-in-place box columns, grouting holes need to be opened on the column wall to serve as grouting channels for concrete or grout to enter the column cavity. Grouting holes are usually opened at the lower part of the column or at the interface of segmented casting so that concrete can be injected into the closed cavity of the box column by means of pumping, jacking or gravity grouting. Since the interior of a box column is a relatively enclosed space, the air accumulated inside the column and the water vapor generated by the concrete hydration reaction need to be discharged in time during the concrete pouring process to avoid the formation of holes or cavities inside the concrete due to gas retention, which would affect the density and integrity of the structure. Therefore, vent holes are usually provided on the column wall and the internal horizontal partition of the box column to connect the internal cavity of the column with the outside atmosphere and realize the smooth discharge of gas. The vent holes are generally arranged below the horizontal partition or in the upper part of the internal cavity of the column to ensure that the gas inside the column can be discharged along the preset path. However, the existing cast-in-place concrete box columns are cumbersome to assemble and have poor stability, which requires construction workers to spend a lot of effort to assemble them and is not conducive to improving assembly efficiency. Therefore, a cast-in-place concrete box column is needed to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a cast-in-place concrete box column to solve the problems mentioned in the background art, such as the cumbersome assembly process of existing cast-in-place concrete box columns, which leads to low assembly efficiency and poor stability.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A cast-in-place concrete box column includes horizontal plates and longitudinal plates used in conjunction with them. The horizontal and longitudinal plates are arranged perpendicularly to each other, and two horizontal plates and two longitudinal plates form a U-shaped frame structure. Reinforcing steel components are installed inside the U-shaped frame structure. The longitudinal plates are provided with notched grooves to allow the horizontal and longitudinal plates to fit tightly together. Locking columns are installed between the horizontal and longitudinal plates, and fastening mechanisms are provided inside the horizontal and longitudinal plates to tightly lock the horizontal plates, longitudinal plates, and locking columns. The fastening mechanism includes transverse and longitudinal slots provided on the locking columns. Both the horizontal and longitudinal plates are provided with grouting holes and venting channels penetrating both sides, and the grouting holes and venting channels on the two horizontal and two longitudinal plates are symmetrically staggered. The upper end surfaces of both the horizontal and longitudinal plates are provided with butt joint strips, and the lower end surfaces of both the horizontal and longitudinal plates are provided with butt joint grooves that match the butt joint strips.

[0005] Furthermore, the fastening mechanism also includes mounting cavities provided in both the horizontal plate and the vertical plate, and through holes extending to the corresponding mounting cavities are provided on the sides of both the horizontal plate and the vertical plate, with a transverse locking shaft and a longitudinal locking shaft respectively movably passing through the through holes in the horizontal plate and the vertical plate.

[0006] The above technical solution facilitates the installation of fastening mechanisms inside the horizontal and vertical plates to securely connect the horizontal and vertical plates and the locking posts.

[0007] Furthermore, the bearing inside the mounting cavity is connected to a lead screw shaft, and a support nut is threaded onto the lead screw shaft. There are two support nuts on each lead screw shaft, and the two support nuts are symmetrically arranged. A worm gear drive structure is also installed between the horizontal plate and the vertical plate and the corresponding lead screw shaft.

[0008] By adopting the above technical solution, it is easy to drive the lead screw shaft to rotate through the worm gear drive structure, and make the support nut on the lead screw shaft move along its axial direction.

[0009] Furthermore, the worm gear drive structure includes a worm gear sleeve and a worm shaft. The worm gear sleeve is coaxially keyed to the middle of the lead screw shaft, and the shaft end bearing at the inner end of the worm shaft is connected to the inner side of the mounting cavity. The horizontal plate and the vertical plate are penetrated by the shaft end bearing at the corresponding outer end of the worm shaft. The shaft end of the outer end of the worm shaft has a T-shaped structure, and the end of the shaft end of the outer end of the worm shaft has a regular hexahedral structure, so that the construction personnel can rotate the worm shaft with tools.

[0010] Using the above technical solution, construction workers can turn the worm shaft with a wrench, causing the worm shaft to rotate and drive the lead screw shaft connected to the worm wheel sleeve to rotate, while also taking into account the advantage of saving effort.

[0011] Furthermore, the lead screw shaft is provided with two sections of threads with opposite directions of rotation, so that the two support nuts on it can move towards each other or away from each other when it rotates.

[0012] By adopting the above technical solution, when the lead screw shaft rotates, the two support nuts connected to it can move closer to each other or move further away from each other.

[0013] Furthermore, each of the mounting cavities is slidably connected with a sliding arm, and two sliding arms are symmetrically arranged in the corresponding mounting cavity. A support arm is provided between the sliding arm and the corresponding support nut, and both ends of the support arm are connected to the corresponding sliding arm and the corresponding support nut by means of shaft connection.

[0014] By adopting the above technical solution, the movement of the two supporting nuts can cause the sliding arm to push or pull the sliding arm to move, thereby facilitating the movement of the two sliding arms away from or towards each other.

[0015] Furthermore, the inner ends of the transverse locking shaft and the longitudinal locking shaft are respectively fixedly connected to the corresponding sliding arms, and the outer ends of the transverse locking shaft and the longitudinal locking shaft are respectively engaged with the locking post through transverse and longitudinal slots.

[0016] By adopting the above technical solution, the horizontal locking shaft and the vertical locking shaft can be connected to the locking post, thus initially connecting the horizontal plate, the vertical plate and the locking post.

[0017] Furthermore, both the outer ends of the transverse locking shaft and the outer ends of the longitudinal locking shaft are provided with limiting protrusions, and the diameter of the protrusions is larger than the inner diameter of the transverse and longitudinal slots. This is to ensure that the transverse or longitudinal locking shaft will not separate from the locking post when it moves along its axial direction, thereby ensuring the stability of the connection between the transverse plate, the longitudinal plate and the locking post.

[0018] By adopting the above technical solution, the protrusions allow both the transverse and longitudinal locking shafts to pull on the locking pin, thereby enabling the locking pin to apply pressure to the transverse and longitudinal plates, which helps to ensure a stable and tight connection between the three.

[0019] Furthermore, each of the through holes is provided with a sealing plate, and two sealing plates are provided in the corresponding through hole, forming an air cavity between the two sealing plates. Both the transverse locking shaft and the longitudinal locking shaft are provided with piston plates coaxial with them, and the piston plates are seamlessly slidably connected to the inner side of the corresponding air cavity. The transverse locking shaft and the longitudinal locking shaft seamlessly slide through the corresponding sealing plates.

[0020] Furthermore, the outward-facing sides of both the horizontal and vertical plates are provided with one-way air inlets that penetrate into the corresponding air chambers, and the inward-facing sides of both the horizontal and vertical plates are provided with one-way exhaust holes that penetrate into the corresponding air chambers.

[0021] By adopting the above technical solution, it is easy to allow external gas to enter the air chamber during assembly, and when disassembling the horizontal and vertical plates, gas can be injected into the gap between the horizontal and vertical plates and the concrete to assist in the separation of the horizontal and vertical plates from the concrete.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the cast-in-place concrete box column can achieve a stable opening-shaped frame structure by turning the worm shaft on the structure through four worm gears, thereby avoiding the problem of low efficiency during assembly caused by the need to tighten a large number of nuts. In addition, during the above process, the transverse locking shaft and the longitudinal locking shaft apply tensile force to the locking column, which makes the connection between the transverse plate, the longitudinal plate and the locking column tighter, thereby ensuring the stability of the structure. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention from a bottom view; Figure 3 This is a partial top view of the structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of point A in the middle; Figure 5 This is a schematic diagram of the cross-sectional connection structure of the horizontal plate of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram of point B; Figure 7 This is a schematic diagram of the connection structure between the transverse locking shaft and the longitudinal locking shaft and the locking post of the present invention; Figure 8 For the present invention Figure 6 A magnified structural diagram of point C.

[0024] In the diagram: 1. Horizontal plate; 2. Vertical plate; 3. Locking post; 4. Connecting strip; 5. Reinforcing bar assembly; 6. Connecting groove; 7. Worm gear drive structure; 8. One-way air inlet; 9. One-way exhaust hole; 10. Grouting hole; 11. Exhaust duct; 12. Notched corner groove; 13. Mounting cavity; 14. Lead screw shaft; 15. Sliding arm; 16. Through hole; 17. Sealing plate; 18. Transverse locking shaft; 19. Piston plate; 20. Support nut; 21. Support arm; 22. Transverse groove; 23. Longitudinal groove; 24. Longitudinal locking shaft. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Please see Figure 1-8 The present invention provides a technical solution: A cast-in-place concrete box girder includes a horizontal plate 1 and a longitudinal plate 2 used in conjunction with it. The horizontal plate 1 and the longitudinal plate 2 are arranged perpendicularly to each other, and the two horizontal plates 1 and the two longitudinal plates 2 form a U-shaped frame structure. Reinforcing steel components 5 are installed within the U-shaped frame structure. A notched groove 12 is provided on the longitudinal plate 2 to allow the horizontal plate 1 and the longitudinal plate 2 to fit tightly together. A locking post 3 is installed between the horizontal plate 1 and the longitudinal plate 2. Fastening mechanisms are provided within the horizontal plate 1 and the longitudinal plate 2 to tightly lock the horizontal plate 1, the longitudinal plate 2, and the locking post 3. The fastening mechanism includes a transverse slot 22 and a longitudinal slot 23 provided on the locking post 3. The fastening mechanism also includes installation cavities provided within both the horizontal plate 1 and the longitudinal plate 2. 13. Both the horizontal plate 1 and the vertical plate 2 have through holes 16 extending to the corresponding mounting cavity 13 on their sides. A transverse locking shaft 18 and a longitudinal locking shaft 24 respectively movably pass through the through holes 16 on the horizontal plate 1 and the vertical plate 2. A lead screw shaft 14 is connected to the mounting cavity 13 by a bearing, and a support nut 20 is threaded onto the lead screw shaft 14. There are two support nuts 20 on each lead screw shaft 14, and the two support nuts 20 are symmetrically arranged. A worm gear drive structure 7 is also installed between the horizontal plate 1 and the vertical plate 2 and the corresponding lead screw shaft 14. The worm gear drive structure 7 includes a worm gear sleeve and a worm shaft. The worm gear sleeve is coaxially keyed to the middle of the lead screw shaft 14, and the shaft end bearing of the inner end of the worm shaft is connected to... On the inner side of the mounting cavity 13, the horizontal plate 1 and the vertical plate 2 are penetrated by the shaft end bearings of the corresponding outer ends of the worm shaft. The shaft end of the worm shaft has a T-shaped structure, and the end of the shaft end of the worm shaft has a regular hexahedral structure to facilitate the rotation of the worm shaft by the construction personnel using tools. The lead screw shaft 14 is provided with two sections of threads with opposite directions, which are used to make the two support nuts 20 on it move towards each other or away from each other when it rotates. Each mounting cavity 13 is slidably connected with a sliding arm 15, and two sliding arms 15 are symmetrically arranged in the corresponding mounting cavity 13. A support arm 21 is provided between the sliding arm 15 and the corresponding support nut 20, and both ends of the support arm 21 are connected by a shaft. The transverse locking shaft 18 and the longitudinal locking shaft 24 are respectively connected to the corresponding sliding arm 15 and the corresponding support nut 20. The inner end of the transverse locking shaft 18 and the inner end of the longitudinal locking shaft 24 are respectively fixedly connected to the corresponding sliding arm 15. The outer end of the transverse locking shaft 18 and the outer end of the longitudinal locking shaft 24 are respectively engaged with the locking post 3 through the transverse slot 22 and the longitudinal slot 23. The outer ends of the transverse locking shaft 18 and the longitudinal locking shaft 24 are provided with limit protrusions, and the diameter of the protrusions is larger than the inner diameter of the transverse slot 22 and the longitudinal slot 23. This is to ensure that the transverse locking shaft 18 or the longitudinal locking shaft 24 will not separate from the locking post 3 when it moves along its axial direction, thereby ensuring the stability of the transverse plate 1, the longitudinal plate 2 and the locking post 3 after connection.

[0026] In use, the two horizontal plates 1 and the two vertical plates 2 are initially spliced ​​together to form a square frame structure through the notched groove 12; In the above process, the transverse locking shaft 18 and the longitudinal locking shaft 24 pass through the transverse slot 22 and the longitudinal slot 23 on the locking post 3 respectively, so as to achieve the initial connection of the two transverse plates 1, the two longitudinal plates 2 and the four locking posts 3; Subsequently, the construction workers used a wrench to rotate the worm shaft on the worm gear drive structure 7, thereby driving the screw shaft 14 connected to the worm gear sleeve to rotate via the rotation of the worm shaft. When the lead screw shaft 14 rotates, the two support nuts 20 threaded on it move closer to each other, which in turn causes the two opposing sliding arms 15 to move closer to each other under the action of the support arm 21. By bringing the two sliding arms 15 closer together, both the transverse locking shaft 18 and the longitudinal locking shaft 24 apply tensile force to the locking post 3, thereby splicing the two transverse plates 1, the two longitudinal plates 2 and the four locking posts 3 into a sturdy U-shaped frame structure. In the above process, because the worm gear drive structure 7 is a force-saving structure, and the structure formed by the lead screw shaft 14, the support arm 21 and the support nut 20 is also a force-saving structure, the labor intensity of the workers can be greatly reduced while ensuring the stability of the U-shaped frame structure.

[0027] Both the horizontal plate 1 and the vertical plate 2 are provided with grouting holes 10 and venting channels 11 penetrating both sides of them. The grouting holes 10 and venting channels 11 on the two horizontal plates 1 and the two vertical plates 2 are symmetrically staggered. The upper end face of both the horizontal plate 1 and the vertical plate 2 is provided with a connecting strip 4, and the lower end face of both the horizontal plate 1 and the vertical plate 2 is provided with a connecting groove 6 that matches the connecting strip 4. Each through hole 16 is provided with a sealing plate 17, and there are two sealing plates 17 in the corresponding through hole 16. The plates 17 form an air chamber. Piston plates 19 are provided on both the transverse locking shaft 18 and the longitudinal locking shaft 24, and the piston plates 19 are seamlessly slidably connected to the inner side of the corresponding air chamber. The transverse locking shaft 18 and the longitudinal locking shaft 24 are seamlessly slidably penetrating the corresponding sealing plates 17. The outward-facing sides of the transverse plate 1 and the longitudinal plate 2 are provided with one-way air inlets 8 that penetrate into the corresponding air chamber, and the inward-facing sides of the transverse plate 1 and the longitudinal plate 2 are provided with one-way exhaust holes 9 that penetrate into the corresponding air chamber.

[0028] When in use, because the two opposing sliding arms 15 are close to each other, the transverse locking shaft 18 and the longitudinal locking shaft 24 can move within the through hole 16. Because the area between the two sealing plates 17 in the through hole 16 is seamlessly slidably connected to the piston plate 19, and the transverse locking shaft 18 and the longitudinal locking shaft 24 are seamlessly slidably connected to the sealing plates 17, the external gas can be absorbed into the area between the two sealing plates 17 through the one-way air inlet 8. When it is necessary to replace the horizontal plate 1, the vertical plate 2 and the locking column 3 to form a U-shaped frame structure, the horizontal locking shaft 18 and the vertical locking shaft 24 move in opposite directions, which will cause the gas in the area between the two sealing plates 17 to be discharged through the one-way exhaust hole 9 into the space between the U-shaped frame structure and the concrete, which helps to separate the U-shaped frame structure from the concrete.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cast-in-place concrete box column, comprising a horizontal plate (1) and a longitudinal plate (2) used in conjunction with it, characterized in that: The horizontal plate (1) and the vertical plate (2) are arranged perpendicularly to each other, and the two horizontal plates (1) and the two vertical plates (2) form a U-shaped frame structure. The U-shaped frame structure is equipped with steel reinforcement components (5). The vertical plate (2) is provided with a notched groove (12) to allow the horizontal plate (1) and the vertical plate (2) to fit tightly together. A locking post (3) is installed between the horizontal plate (1) and the vertical plate (2), and a fastening machine is provided in the horizontal plate (1) and the vertical plate (2) to tightly lock the horizontal plate (1), the vertical plate (2) and the locking post (3). The fastening mechanism includes a transverse slot (22) and a longitudinal slot (23) provided on the locking post (3). The horizontal plate (1) and the longitudinal plate (2) are provided with grouting holes (10) and exhaust ducts (11) that pass through both sides. The grouting holes (10) and exhaust ducts (11) on the two horizontal plates (1) and the two longitudinal plates (2) are symmetrically staggered. The upper end face of the horizontal plate (1) and the longitudinal plate (2) are provided with a connecting strip (4), and the lower end face of the horizontal plate (1) and the longitudinal plate (2) are provided with a connecting groove (6) that matches the connecting strip (4).

2. A cast-in-place concrete box column according to claim 1, characterized in that, The fastening mechanism also includes mounting cavities (13) provided in both the horizontal plate (1) and the vertical plate (2), and both the horizontal plate (1) and the vertical plate (2) have through holes (16) extending to the corresponding mounting cavities (13) on their sides, and a transverse locking shaft (18) and a longitudinal locking shaft (24) respectively movably pass through the through holes (16) on the horizontal plate (1) and the vertical plate (2).

3. A cast-in-place concrete box column according to claim 2, characterized in that, The bearing in the mounting cavity (13) is connected to the lead screw shaft (14), and the lead screw shaft (14) is threaded with a support nut (20). There are two support nuts (20) on each lead screw shaft (14), and the two support nuts (20) are symmetrically arranged. A worm gear drive structure (7) is also installed between the horizontal plate (1) and the vertical plate (2) and the corresponding lead screw shaft (14).

4. A cast-in-place concrete box column according to claim 3, characterized in that, The worm gear drive structure (7) includes a worm gear sleeve and a worm shaft. The worm gear sleeve is coaxially keyed to the middle of the lead screw shaft (14), and the shaft end bearing of the inner end of the worm shaft is connected to the inner side of the mounting cavity (13). The horizontal plate (1) and the vertical plate (2) are connected through the shaft end bearing of the corresponding outer end of the worm shaft. The shaft end of the outer end of the worm shaft is a T-shaped structure, and the end of the shaft end of the outer end of the worm shaft is a regular hexahedron structure, so that the construction personnel can rotate the worm shaft with tools.

5. A cast-in-place concrete box column according to claim 4, characterized in that: The lead screw shaft (14) is provided with two sections of threads with opposite directions, which are used to make the two support nuts (20) on it move towards each other or away from each other when it rotates.

6. A cast-in-place concrete box column according to claim 3, characterized in that: Each of the mounting cavities (13) is slidably connected with a sliding arm (15), and two sliding arms (15) are symmetrically arranged in the corresponding mounting cavity (13). A support arm (21) is provided between the sliding arm (15) and the corresponding support nut (20), and both ends of the support arm (21) are connected to the corresponding sliding arm (15) and the corresponding support nut (20) respectively by means of shaft connection.

7. A cast-in-place concrete box column according to claim 6, characterized in that: The inner ends of the transverse locking shaft (18) and the longitudinal locking shaft (24) are respectively fixedly connected to the corresponding sliding arms (15), and the outer ends of the transverse locking shaft (18) and the longitudinal locking shaft (24) are respectively engaged and connected to the locking post (3) through the transverse slot (22) and the longitudinal slot (23).

8. A cast-in-place concrete box column according to claim 7, characterized in that: The outer ends of the transverse locking shaft (18) and the longitudinal locking shaft (24) are provided with limit protrusions, and the diameter of the protrusions is larger than the inner diameter of the transverse slot (22) and the longitudinal slot (23). This is to ensure that the transverse locking shaft (18) or the longitudinal locking shaft (24) will not separate from the locking post (3) when it moves along its axial direction, thereby ensuring the stability of the connection of the transverse plate (1), the longitudinal plate (2) and the locking post (3).

9. A cast-in-place concrete box column according to claim 2, characterized in that: Each of the through holes (16) is provided with a sealing plate (17), and there are two sealing plates (17) in the corresponding through holes (16). The two sealing plates (17) form an air cavity. The transverse locking shaft (18) and the longitudinal locking shaft (24) are provided with piston plates (19) coaxial with them, and the piston plates (19) are seamlessly slidably connected to the inner side of the corresponding air cavity. The transverse locking shaft (18) and the longitudinal locking shaft (24) seamlessly slide through the corresponding sealing plates (17).

10. A cast-in-place concrete box column according to claim 9, characterized in that: The outward-facing sides of the horizontal plate (1) and the vertical plate (2) are provided with one-way air inlets (8) that penetrate into the corresponding air chambers, and the inward-facing sides of the horizontal plate (1) and the vertical plate (2) are provided with one-way exhaust holes (9) that penetrate into the corresponding air chambers.

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