Bolt end plate connecting joint of fabricated concrete beam column

Abstract

The invention relates to the technical field of building construction, in particular to a bolt end plate connecting joint of an assembly type concrete beam column, which comprises a sleeve plate I and a sleeve plate II, the sleeve plate I and the sleeve plate II are both arranged on a steel upright post in a sleeving manner, concrete assembly beams are mounted on two sides of the steel upright post, and two groups of traction plates are fixed on the bottom surface of the sleeve plate I; each group of traction plates comprises two traction plates, the two traction plates are inserted into two groove bodies at the end part of the concrete assembly beam, connecting plates are fixed on the surfaces of the traction plates, and splicing grooves are formed in the surfaces of the connecting plates; the pre-limiting device has the advantages that the first sleeve plate and the second sleeve plate are arranged on the steel stand column in a sleeving mode, pre-limiting of the concrete assembly beam is achieved through the traction plate, the screw and the nut, and the operation process is simple and easy to understand. Construction personnel do not need to have high welding skills, connection can be completed only by installing components and tightening bolts according to a certain sequence, the construction time is greatly shortened, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a bolt end plate connecting joint of a fabricated concrete beam column. BACKGROUND

[0002] In the field of fabricated buildings, the connection of concrete beam columns is a key link, and its connection quality directly affects the overall stability, safety and durability of the building structure. The traditional connection method of concrete beam columns is to use welding or on-site pouring of concrete.

[0003] However, the welding method has many disadvantages. On the one hand, the welding process requires a high skill level of the operator, and if the welding process is not proper, it is easy to produce welding defects such as pores, slag inclusion, cracks, etc. These defects will reduce the strength and toughness of the welded joint, and thus affect the reliability of the beam column connection, bringing safety hazards to the building structure. On the other hand, welding operations usually need to be carried out on site, which will produce a large amount of smoke, arc light and noise pollution, etc., which will harm the health of the construction personnel, and may also have adverse effects on the surrounding environment. In addition, after welding, if the components are subjected to impact or vibration during transportation and installation, cracks may occur at the welded parts, which are difficult to repair.

[0004] The on-site pouring of concrete method also has obvious shortcomings. This method has a long construction period, and from the installation of the formwork, the binding of the reinforcement, the pouring of the concrete to the curing, etc., a lot of time is consumed, which will prolong the construction period of the entire building project. Moreover, the quality of the on-site pouring of concrete is affected by many factors, such as the quality of raw materials, mix proportion, construction technology, environmental temperature and humidity, etc., and the quality is difficult to accurately control, and quality problems such as substandard concrete strength, honeycomb pitted surface, cracks, etc. may easily occur. At the same time, on-site pouring of concrete requires a large amount of formwork and supporting materials, increasing the construction cost and material waste.

[0005] With the increasing requirements of the construction industry for construction efficiency, quality and environmental protection, the traditional connection method of concrete beam columns has been difficult to meet the development needs of modern fabricated buildings. Therefore, it is of great practical significance to develop a fabricated concrete beam column connection joint technology that is simple to construct, reliable in connection and environmentally friendly and efficient. SUMMARY

[0006] The purpose of the present application is to provide a bolt end plate connecting joint of a fabricated concrete beam column to solve the problems raised in the background art.

[0007] To achieve the above object, the present invention provides the following technical solutions: A bolt end plate connection node for prefabricated concrete beam-columns, including a first sleeve plate and a second sleeve plate. Both the first sleeve plate and the second sleeve plate are sleeved on a steel column. Concrete assembly beams are installed on both sides of the steel column. Two groups of traction plates are fixed to the bottom surface of the first sleeve plate. Each group of traction plates has two. The two traction plates are inserted into two slots at the end of the concrete assembly beam. A connecting plate is fixed to the surface of the traction plate. An assembly slot is formed on the surface of the connecting plate. An insertion block is inserted into the assembly slot. A blocking block is slidably connected inside the assembly slot. The blocking block squeezes the connecting plate to be inserted on the surface of the concrete assembly beam. The blocking blocks on both sides of the concrete assembly beam are connected to the concrete assembly beam after being penetrated by a first bolt. The two groups of traction plates are connected by a second bolt penetrating the steel column.

[0008] Preferably, a screw rod is fixed to the bottom surface of the traction plate. The screw rod penetrates the second sleeve plate, and a nut is sleeved and screwed at the bottom end of the screw rod. After the screw rod and the nut are screwed and locked, the first sleeve plate and the second sleeve plate clamp the concrete assembly beam.

[0009] Preferably, the traction plate is in the shape of a flag plate. Through holes two are formed on the surfaces of the traction plate and the steel column. The first bolt penetrates the through holes two on the surfaces of the traction plate and the steel column and is screwed and locked.

[0010] Preferably, limiting slots are formed on both the top surface and the bottom surface of the assembly slot. The limiting slots are in the shape of a "convex" slot. "Convex" shaped sliding strips are integrally formed on both the upper and lower sides of the blocking block. The sliding strips are slidably connected in the limiting slots.

[0011] Preferably, a through hole is formed on the surface of the assembly slot. The insertion block is inserted into the through hole. One end of the insertion block close to the assembly slot has an inclined surface. A notch is formed at the other end of the insertion block. An elastic rubber band is fixed to the surface of the notch. The two ends of the elastic rubber band are respectively fixed to two parallel side walls of the through hole.

[0012] Preferably, when the blocking block pushes the insertion block, the insertion block stretches and deforms the elastic rubber band, and one end of the insertion block is inserted into a socket formed on the surface of the concrete assembly beam.

[0013] Preferably, through holes one are formed on the surfaces of the blocking block, the assembly slot and the concrete assembly beam. The first bolt penetrates through the multiple through holes one. After the first bolt is locked, the blocking block is fixed in the connecting plate, and the concrete assembly beam is fixed between the two connecting plates.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The bolted end plate connection node for prefabricated concrete beams and columns proposed in this invention uses two sleeve plates, one on top of the steel column, and a traction plate, bolts, and nuts to pre-position the prefabricated concrete beam. The operation process is simple and easy to understand. Construction workers do not need advanced welding skills; they only need to install the components and tighten the bolts in a certain sequence to complete the connection, greatly shortening the construction time and improving construction efficiency. For example, in traditional welding connection methods, completing the welding of a beam-column node may take several hours or even longer, while the connection method of this invention can be completed in a shorter time, effectively shortening the construction period of the building project.

[0016] The connection between the traction plate and the steel column is achieved through bolts and through holes, followed by screw-locking. Additionally, blocks on both sides of the precast concrete beam are connected to the beam via bolts and through holes. Simultaneously, insert blocks are used to achieve positioning within slots on the surface of the precast concrete beam, creating a multi-layered connection and positioning mechanism. This connection method effectively transfers internal forces between the beam and column, improving the load-bearing capacity and deformation resistance of the joint. It ensures that the beam-column connection remains stable and reliable under various loads, preventing loosening, slippage, or breakage, thus guaranteeing the overall safety of the building structure.

[0017] The connection nodes of this invention adopt a standardized and modular component design, with all components prefabricated in the factory, ensuring strict dimensional accuracy and quality. During on-site installation, assembly is only required according to design requirements, avoiding quality issues caused by human factors and environmental conditions during on-site construction. For example, dimensional deviations and welding defects in components can be effectively controlled during factory prefabrication, resulting in more stable and reliable connection node quality and improving the overall quality of the building structure.

[0018] Compared to traditional welding methods, the connection nodes of this invention eliminate the need for welding during construction, avoiding pollution such as welding fumes, arc light, and noise, thus reducing harm to the health of construction workers and impact on the surrounding environment. Simultaneously, this connection method reduces the use of on-site formwork and support materials, minimizing material waste and construction debris, aligning with the principles of green building and sustainable development. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 for Figure 1 Sectional view of the structure at point AA;

[0021] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point B;

[0022] Figure 4 This is a schematic diagram of the connection structure between sleeve one and sleeve two of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the sleeve plate and the traction plate of the present invention;

[0024] Figure 6 This is a schematic diagram of the connection structure between the traction plate and the connecting plate;

[0025] Figure 7 This is a schematic diagram of the stop block structure of the present invention.

[0026] In the diagram: 1. Steel column; 2. Concrete assembly beam; 3. Insert 201; 4. Sleeve 1; 5. Sleeve 2; 6. Traction plate; 7. Screw 501; 8. Nut 502; 9. Connecting plate; 10. Assembly groove 601; 11. Limiting groove 602; 12. Through hole 603; 13. Insert block 604; 14. Notch 6041; 15. Rubber band 605; 16. Stop block 7; 17. Sliding strip 701; 18. Picking groove 702; 19. Through hole 2; 10. Bolt 2. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1 to 7 This invention provides a technical solution: a bolt end plate connection node for prefabricated concrete beams and columns, including a first sleeve plate 3 and a second sleeve plate 4. Both the first sleeve plate 3 and the second sleeve plate 4 are sleeved on a steel column 1. Concrete prefabricated beams 2 are installed on both sides of the steel column 1. Two sets of traction plates 5 are fixed on the bottom surface of the first sleeve plate 3. Each set of traction plates 5 has two plates. The two traction plates 5 are inserted into two grooves at the ends of the concrete prefabricated beams 2. A screw rod 501 is fixed on the bottom surface of the traction plate 5. The screw rod 501 passes through the second sleeve plate 4, and a nut 502 is screwed onto the bottom end of the screw rod 501. After the screw rod 501 and the nut 502 are screwed and locked, the first sleeve plate 3 and the second sleeve plate 4 clamp the concrete prefabricated beams 2. The traction plate 5 is flag-shaped. Both the traction plate 5 and the surface of the steel column 1 have through holes 2 10. A bolt 1 9 passes through the through holes 2 10 on the surfaces of the traction plate 5 and the steel column 1 and is screwed and locked.

[0029] First, sleeve plate 3 and sleeve plate 4 are pre-installed on the steel column 1. At this time, the four traction plates 5 at the bottom of sleeve plate 3 support the four corners of the steel column 1. After bolt 2 11 is passed through the traction plate 5 and the through hole 2 10 on the surface of the steel column 1, it is locked. At this time, the four traction plates 5 are fixed on the steel column 1. Then, sleeve plate 2 4 is pushed up until the end of the screw 501 passes through sleeve plate 2 4. Then, nut 502 is installed on the end of screw 501 and tightened two turns. At this time, sleeve plate 2 4 is suspended at the bottom of sleeve plate 3. Then, concrete assembly beam 2 is hoisted and placed against one side of the steel column 1. The area between the two traction plates 5 is moved to insert concrete assembly beam 2. Then, nut 502 is tightened on screw 501. At this time, concrete assembly beam 2 is clamped between sleeve plate 3 and sleeve plate 2 4 and is pre-limited.

[0030] To further strengthen the connection between the concrete precast beam 2 and the steel column 1, the following was proposed:

[0031] A connecting plate 6 is fixed to the surface of the traction plate 5. An assembly groove 601 is formed on the surface of the connecting plate 6. An insert block 604 is inserted into the surface of the assembly groove 601. A stop block 7 is slidably connected inside the assembly groove 601. The stop block 7 pushes the connecting plate 6 into the surface of the concrete assembly beam 2. The stop blocks 7 on both sides of the concrete assembly beam 2 are connected to the concrete assembly beam 2 by a bolt 9. The two sets of traction plates 5 are connected by a bolt 11 that passes through the steel column 1. Limiting grooves 602 are formed on both the top and bottom surfaces of the assembly groove 601. The limiting grooves 602 are convex (U) shaped. Concave (U) shaped sliding strips 701 are integrally formed on both the upper and lower sides of the stop block 7. The sliding strips 701 are slidably connected in the limiting grooves 602. An opening 6 is formed on the surface of the assembly groove 601. 03. The insert block 604 is inserted into the through-hole 603. One end of the insert block 604 near the assembly groove 601 has a bevel, and the other end of the insert block 604 has a notch 6041. A rubber band 605 is fixed to the surface of the notch 6041, and the two ends of the rubber band 605 are respectively fixed to two parallel side walls of the through-hole 603. When the stop block 7 pushes the insert block 604, the insert block 604 stretches and deforms the rubber band 605, and one end of the insert block 604 is inserted into the through-hole 201 on the surface of the concrete assembly beam 2. Through holes 8 are opened on the surfaces of the stop block 7, the assembly groove 601, and the concrete assembly beam 2. Multiple through holes 8 are penetrated by bolts 9. After the bolts 9 are tightened, the stop block 7 is fixed in the connecting plate 6, and the concrete assembly beam 2 is fixed between the two connecting plates 6. A retrieval groove 702 is opened on the surface of the baffle 7, and fingers can be inserted into the retrieval groove 702 to easily pull out the baffle 7.

[0032] After the concrete assembly beam 2 is clamped between sleeve plate 3 and sleeve plate 4, the stop block 7 is pushed into the corresponding assembly slot 601, and the slide bar 701 slides into the limiting slot 602 to prevent the stop block 7 from tilting to the side. In the initial state, the rubber band 605 pulls one end of the insert block 604 into the assembly slot 601 a certain distance. As the stop block 7 is pushed into the assembly slot 601, the stop block 7 pushes the insert block 604 along the inclined surface, and the insert block 604 is compressed into the through hole 603. The tensioned rubber band 605 is deformed, and the other end of the insert block 604 is inserted into the insert 201, so that the concrete assembly beam 2 is limited between the two traction plates 5, preventing the concrete assembly beam 2 from being pulled and moved in the horizontal direction. Then, the bolt 9 is passed through the stop block 7, the assembly groove 601 and the through hole 8 on the surface of the concrete assembly beam 2 and locked. At this time, the concrete assembly beam 2 is firmly fixed between the two traction plates 5, completing the quick and weld-free fixing of the steel column 1 and the concrete assembly beam 2.

[0033] Method for using bolted end plate connections in prefabricated concrete beams and columns:

[0034] Preliminary preparation: First, sleeve plate 3 and sleeve plate 4 are installed on the steel column 1. At this time, the four traction plates 5 at the bottom of sleeve plate 3 are supported at the four corners of the steel column 1.

[0035] Fixing the traction plates: After passing the bolts 211 through the through holes 210 on the surfaces of the traction plates 5 and the steel column 1, tighten them. At this time, the four traction plates 5 are fixed on the steel column 1.

[0036] Suspension plate two: Push up the second sleeve plate 4 until the end of the screw 501 passes through the second sleeve plate 4, then put the nut 502 on the end of the screw 501 and turn it two turns. At this time, the second sleeve plate 4 is suspended at the bottom of the first sleeve plate 3.

[0037] Hoisting the concrete assembly beam: After hoisting the concrete assembly beam 2 and placing it against one side of the steel column 1, move the concrete assembly beam 2 into the area between the two traction plates 5.

[0038] Pre-limited concrete assembly beam: Tighten nut 502 on screw 501. At this time, concrete assembly beam 2 is pre-limited between sleeve 3 and sleeve 4.

[0039] Further strengthen the connection

[0040] Preparation components: A connecting plate 6 is fixed on the surface of the traction plate 5. Assembly grooves 601 are formed on the surface of the connecting plate 6. Limiting grooves 602 are formed on both the top surface and the bottom surface of the assembly groove 601. The limiting groove 602 is a "convex"-shaped groove. A through hole 603 is formed on the surface of the assembly groove 601. An insertion block 604 is inserted into the through hole 603. One end of the insertion block 604 close to the assembly groove 601 is provided with an inclined surface. A notch 6041 is formed at the other end of the insertion block 604. An elastic rubber belt 605 is fixed on the surface of the notch 6041. Both ends of the elastic rubber belt 605 are respectively fixed on two parallel side walls of the through hole 603. "Convex"-shaped sliding strips 701 are integrally formed on both the upper and lower sides of the retaining block 7.

[0041] Pushing the retaining block: After the concrete assembled beam 2 is clamped between the first sleeve plate 3 and the second sleeve plate 4, the retaining block 7 is pushed into the corresponding assembly groove 601, and the sliding strip 701 slides into the limiting groove 602 to prevent the retaining block 7 from toppling sideways.

[0042] The retaining block squeezing the insertion block: Initially, one end of the insertion block 604 is pulled by the elastic rubber belt 605 and extends into the assembly groove 601 for a certain distance. When the retaining block 7 is pushed forward in the assembly groove 601, the retaining block 7 squeezes the insertion block 604 along the inclined surface. The insertion block 604 is compressed and pushed into the through hole 603. And the insertion block 604 stretches the elastic rubber belt 605 to deform. Moreover, the other end of the insertion block 604 is inserted into the insertion hole 201 formed on the surface of the concrete assembled beam 2, so as to limit the concrete assembled beam 2 between the two traction plates 5 and prevent the concrete assembled beam 2 from being pulled and moved in the horizontal direction.

[0043] Bolt locking: Through holes one 8 are formed on the surfaces of the retaining block 7, the assembly groove 601 and the concrete assembled beam 2. After a first bolt 9 passes through the through holes one 8 on the surfaces of the retaining block 7, the assembly groove 601 and the concrete assembled beam 2 and is locked, at this time, the concrete assembled beam 2 is firmly fixed between the two traction plates 5.

[0044] Through the above steps, the rapid non-welding fixation of the steel column 1 and the concrete assembled beam 2 is completed.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bolted end plate connection joint of a fabricated concrete beam column, comprising a sleeve plate one (3) and a sleeve plate two (4), the sleeve plate one (3) and the sleeve plate two (4) are sleeved on a steel column (1), and a concrete fabricated beam (2) is installed on both sides of the steel column (1), characterized in that: The bottom surface of the sleeve plate one (3) is fixed with two groups of traction plates (5), each group of traction plates (5) is provided with two, the two traction plates (5) are inserted into the two slot bodies at the end of the concrete assembly beam (2), the surface of the traction plate (5) is fixed with a connecting plate (6), the surface of the connecting plate (6) is provided with a assembling slot (601), the surface of the assembling slot (601) is inserted with an insertion block (604), the inside of the assembling slot (601) is slidably connected with a stop block (7), the stop block (7) extrudes and inserts the connecting plate (6) into the surface of the concrete assembly beam (2), the stop blocks (7) on both sides of the concrete assembly beam (2) are connected on the concrete assembly beam (2) through a bolt one (9), and the two groups of traction plates (5) are connected through the bolt two (11) penetrating the steel column (1).

2. The bolted end-plate connection joint of a fabricated concrete beam-column according to claim 1, wherein: The bottom surface of the traction plate (5) is fixed with a screw rod (501), the screw rod (501) penetrates the sleeve plate two (4), and the bottom end of the screw rod (501) is sleeved with a nut (502), after the screw rod (501) and the nut (502) are screwed and locked, the sleeve plate one (3) and the sleeve plate two (4) clamp the concrete assembly beam (2).

3. The bolted end-plate connection joint of a fabricated concrete beam-column according to claim 1, wherein: The traction plate (5) is a flag-shaped plate, and the surfaces of the traction plate (5) and the steel column (1) are provided with through holes two (10), and the bolt one (9) is screwed and locked after penetrating the through holes two (10) in the surfaces of the traction plate (5) and the steel column (1).

4. The bolted end-plate connection joint of a fabricated concrete beam-column according to claim 1, wherein: The top surface of the assembling slot (601) and the bottom surface of the assembling slot (601) are provided with limiting grooves (602), the limiting grooves (602) are "convex" grooves, the upper and lower sides of the stop block (7) are integrally formed with "convex" sliding strips (701), and the sliding strips (701) are slidably connected in the limiting grooves (602).

5. The bolted end-plate connection joint of a fabricated concrete beam-column according to claim 1, wherein: The surface of the assembling slot (601) is provided with a through hole (603), the insertion block (604) is inserted into the through hole (603), one end of the insertion block (604) close to the assembling slot (601) is provided with an inclined surface, the other end of the insertion block (604) is provided with a missing slot (6041), the surface of the missing slot (6041) is fixed with a rubber belt (605), and the two ends of the rubber belt (605) are fixed on the two parallel side walls of the through hole (603).

6. The bolted end-plate connection joint of a fabricated concrete beam-column according to claim 5, wherein: When the stop block (7) pushes and extrudes the insertion block (604), the insertion block (604) stretches and deforms the rubber belt (605), and one end of the insertion block (604) is inserted into the insertion hole (201) formed in the surface of the concrete assembly beam (2).

7. The bolted end-plate connection joint of a fabricated concrete beam-column according to claim 1, wherein: The surfaces of the stop block (7), the assembling slot (601) and the concrete assembly beam (2) are provided with through holes one (8), a plurality of through holes one (8) are penetrated by the bolt one (9), after the bolt one (9) is locked, the stop block (7) is fixed in the connecting plate (6), and the concrete assembly beam (2) is fixed between the two connecting plates (6).

Images