Prefabricated prestressed beam and cast-in-place concrete beam connecting joint and construction method

Abstract

The invention discloses a prefabricated prestressed beam and cast-in-place concrete beam connecting joint and a construction method, the prefabricated prestressed beam and cast-in-place concrete beam connecting joint comprises a connecting assembly clamped outside a concrete beam and connected with the prestressed beam, the connecting assembly comprises a [-shaped metal clamping sleeve, and the [-shaped metal clamping sleeve is clamped outside the concrete beam; the two ends of the prestressed beam are sleeved with the regular metal sleeves, so that the two ends of the prestressed beam can be protected against abrasion, the prestressed beam can be conveniently aligned with the connecting parts made of the same metal material by means of the regularity of the prestressed beam, and the stability and convenience during connection are improved; the connecting part can transmit pressure to the bearing part, and the first profile steel directly connected with the bearing part is embedded in the steel sleeve, so that when the first profile steel is stressed, the pressure can be uniformly transmitted to the steel sleeve, then the steel sleeve disperses the pressure, the stress area of the concrete beam is increased, local pressure is relieved, and the overall bearing effect of the concrete beam is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly to a connection node and construction method between a precast prestressed beam and a cast-in-situ concrete beam. Background Art

[0002] Precast prestressed beams are produced in factories and have characteristics such as high-quality concrete, efficient production, and repeatable production. By adding tensile stress in the concrete beam, the prestressed beam can improve its bearing capacity, stiffness, and stability. Cast-in-situ concrete beams, on the other hand, are processed and poured on the construction site and have characteristics such as flexibility, strong adaptability, and better connectivity.

[0003] The connection between precast prestressed beams and cast-in-situ beams is a key structural problem that requires ensuring the firmness and safety of the connection. The existing connection methods between precast prestressed beams and cast-in-situ beams are usually as follows: drilling holes in the exterior of the concrete beam and driving bolts or rivets, and then installing a steel structure on the surface of the concrete beam through the bolts or rivets, and connecting and fixing the precast prestressed beam through the steel structure. However, the above connection methods have the following defects:

[0004] First, it is very inconvenient to drill holes on the surface of the concrete beam, and the work difficulty is relatively large.

[0005] Second, driving bolts or rivets through drilling is likely to damage the structure of the concrete beam, prone to cracks, and reducing the strength of the concrete beam.

[0006] Third, supporting the prestressed beam through bolts or rivets, the connection part bears a large pressure, and it is impossible to reasonably disperse the pressure brought by the prestressed beam, reducing the firmness and stability of the connection. Summary of the Invention

[0007] The purpose of the present invention is to provide a connection node and construction method between a precast prestressed beam and a cast-in-situ concrete beam, which have the advantages of being convenient for construction, capable of reasonably dispersing pressure, and capable of strengthening the connection point, so as to solve the problems raised in the above background art.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A connection node between a precast prestressed beam and a cast-in-situ concrete beam, including a connection component that is clamped outside the concrete beam and connected to the prestressed beam. The connection component includes a U-shaped metal sleeve, the U-shaped metal sleeve is clamped outside the concrete beam, and a support component for supporting and fixing the prestressed beam is installed outside the U-shaped metal sleeve and on the outer side of the concrete beam;

[0009] Metal sleeves are installed at both ends of the prestressed beam, and both ends of the prestressed beam are connected to the support component through the metal sleeves;

[0010] Four groups of dispersion components for dispersing pressure are embedded in the top of the concrete beam, and the dispersion components are installed in pairs on both sides of the U-shaped metal bushing;

[0011] Reinforcement components for improving the overall stability are installed on both sides of the support component, and the top of the reinforcement component is connected to one side of the dispersion component;

[0012] A strengthening component is installed on the top of the U-shaped metal bushing, and diagonal bracing components are installed on both sides of the strengthening component. The diagonal bracing components are connected to the top of the reinforcement component.

[0013] Preferably, the U-shaped metal bushing includes a load-bearing part and connecting parts installed on both sides of the load-bearing part. A first card slot adapted to the load-bearing part is opened on the top of the concrete beam, the load-bearing part is installed inside the first card slot, and the inner side of the connecting part is attached to the side surface of the concrete beam.

[0014] Preferably, the support component includes a support plate. The support plate is installed on the side of the connecting part away from the concrete beam. The bottom of the metal sleeve is connected to the top of the support plate. A raised block is provided at the bottom of the metal sleeve. A groove adapted to the raised block is opened on the top of the support plate. The raised block is slidably embedded inside the groove. A triangular block is installed at the bottom of the support plate. One side of the triangular block is connected to the surface of the connecting part. A positioning block is installed between the metal sleeve and the connecting part.

[0015] Preferably, the dispersion component includes four first steel profiles. The first steel profiles are symmetrically welded in pairs on both sides of the load-bearing part. A steel sleeve is sleeved outside the first steel profile. A U-shaped outer eaves is integrally formed at the top of the outer side of the steel sleeve. A second card slot adapted to the steel sleeve is opened on the top of the concrete beam. The steel sleeve is embedded inside the second card slot. A silicone sealant layer is filled between the steel sleeve and the second card slot.

[0016] Preferably, a support block is installed at the bottom of the steel sleeve. The bottom of the support block is attached to the bottom of the inner cavity of the second card slot. The outer side of the U-shaped outer eaves is attached to the inner wall of the second card slot. Injection holes are opened on the bottom of the steel sleeve and the surface of the U-shaped outer eaves.

[0017] Preferably, the reinforcement component includes triangular frames arranged on both sides of the connecting part. The inner sides of the triangular frames are attached to the surface of the concrete beam. One right-angled side of the triangular frame is connected to the side surface of the connecting part. The top of the other right-angled side of the triangular frame is flush with the top of the concrete beam.

[0018] Preferably, connecting rods are equidistantly installed on the top of the tripod, the tops of the connecting rods extend above the first steel section, connecting columns are installed inside the first steel section, and the tops of the connecting columns are connected to one end of the connecting rods.

[0019] Preferably, the reinforcement assembly includes a second steel section, which is symmetrically arranged on the top of the load-bearing part, a first cross bar is installed at both ends of the second steel section, a first screw is installed on the top of the load-bearing part, the top of the first screw passes through the first cross bar and is threaded with a first screw sleeve, second cross bars are installed equidistantly between the second steel sections, connecting frames are installed at both ends of the second steel section, a V-shaped frame is installed on the top of the second steel section, a third steel section is installed on the top of the V-shaped frame, and third cross bars are installed equidistantly between the third steel sections.

[0020] Preferably, the diagonal brace assembly includes a first rod body, the first rod body is equidistantly installed between the tripods, a second rod body is installed between the first rod body and the third steel section, and the second rod body is arranged in an inclined state.

[0021] A construction method for forming a connection node between a prestressed beam and a cast-in-place concrete beam comprises the following steps:

[0022] S1. Size selection and measurement: select and measure the sizes of concrete beams and prefabricated prestressed beams required for construction according to the construction plan;

[0023] S2. Designing the dimensions of the connection nodes in advance according to the selected and measured dimensions, and selecting materials and assembling the connection nodes according to the advance design;

[0024] S3, mold making. Since it is necessary to install a connection node on the concrete beam, a corresponding concrete beam casting mold is made according to the size and shape of the connection node, and the connection position between the connection node and the concrete beam is determined in advance;

[0025] S4, after the corresponding concrete beam casting mold is manufactured and installed, the concrete beam is cast in the concrete beam casting mold, and demoulding is performed after the concrete beam is solidified;

[0026] S5. Installation of the connection node: after demoulding, the connection node is installed at a predetermined position on the concrete beam;

[0027] S6. The prestressed beam is connected to the connection node by means of a suspension device, and further fixed and tested after the connection, and finally the connection between the prestressed beam and the concrete beam is completed.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. By sleeving relatively regular metal sleeves at both ends of the prestressed beam, not only can both ends of the prestressed beam be protected from wear, but also their regularity can facilitate alignment with the connecting part made of the same metal material, improving the stability and convenience during connection.

[0030] 2. The connecting part will transfer the pressure to the load-bearing part. The first section steel directly connected to the load-bearing part is embedded inside the steel sleeve. In this way, when the first section steel bears the weight, the pressure can be evenly transferred to the steel sleeve, and then the steel sleeve will disperse the pressure, increasing the stress area of the concrete beam, reducing the local pressure, and improving the overall load-bearing effect of the concrete beam.

[0031] 3. When the first section steel is under pressure, the pressure can be transferred to the triangular frame through the connecting rod and the connecting column, further dispersing the pressure, improving the load-bearing performance of the concrete beam, and preventing local overstress and collapse.

[0032] 4. By setting the diagonal brace assembly, the strengthening assembly can be connected to the triangular frame. In this way, a stable triangular structure is formed among the dispersing assembly, the diagonal brace assembly, and the strengthening assembly, improving the overall stability and further enhancing the firmness of the connection node. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the present invention;

[0034] Figure 2 is a schematic side view structural diagram of the chute assembly;

[0035] Figure 3 is a schematic bottom view structural diagram of the second section steel;

[0036] Figure 4 is a schematic structural diagram of the dispersing assembly;

[0037] Figure 5 is a schematic structural diagram of the U-shaped metal bushing;

[0038] Figure 6 is Figure 5 a partial enlarged schematic diagram of area A in

[0039] Figure 7 is a schematic bottom view structural diagram of the steel sleeve;

[0040] Figure 8 is a schematic sectional view structural diagram of the steel sleeve;

[0041] Fig. 9 is an exploded view of the dispersing assembly;

[0042] Fig.10 is a schematic structural diagram of the metal sleeve.

[0043] In the figure: 1, concrete beam; 2, prestressed beam; 3, U-shaped metal ferrule; 4, metal sleeve; 5, connecting part; 6, first card slot; 7, support plate; 8, raised block; 9, groove; 10, triangular block; 11, positioning block; 12, first section steel; 13, steel sleeve; 14, second card slot; 15, silicone sealant layer; 16, support block; 17, injection hole; 18, triangular bracket; 19, connecting rod; 20, connecting column; 21, load-bearing part; 22, second section steel; 23, first cross bar; 24, first screw rod; 25, first screw sleeve; 26, connecting frame; 27, V-shaped frame; 28, third section steel; 29, third cross bar; 30, first rod body; 31, second rod body.

[0044] In the figure: 1, concrete beam; 2, prestressed beam; 3, U-shaped metal ferrule; 4, metal sleeve; 5, connecting part; 6, first card slot; 7, support plate; 8, raised block; 9, groove; 10, triangular block; 11, positioning block; 12, first section steel; 13, steel sleeve; 14, second card slot; 15, silicone sealant layer; 16, support block; 17, injection hole; 18, triangular bracket; 19, connecting rod; 20, connecting column; 21, load-bearing part; 22, second section steel; 23, first cross bar; 24, first screw rod; 25, first screw sleeve; 26, connecting frame; 27, V-shaped frame; 28, third section steel; 29, third cross bar; 30, first rod body; 31, second rod body. Specific embodiments

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment 1

[0047] Please refer to Figure 4 , Figure 5 , Figure 8 and Fig.10 , the present invention provides a technical solution: a connection node between a precast prestressed beam and a cast-in-place concrete beam, including a connection component clamped outside the concrete beam 1 and connected to the prestressed beam 2. The connection component includes a U-shaped metal ferrule 3, which is clamped outside the concrete beam 1. A support component for supporting and fixing the prestressed beam 2 is installed outside the U-shaped metal ferrule 3 and on the outer side of the concrete beam 1; by setting the support component, the prestressed beam 2 can be directly supported and fixed.

[0048] Specifically, metal sleeves 4 are installed at both ends of the prestressed beam 2. Both ends of the prestressed beam 2 are connected to the support assembly through the metal sleeves 4. The U-shaped metal ferrule 3 includes a load-bearing part 21 and connecting parts 5 installed on both sides of the load-bearing part 21. A first card slot 6 adapted to the load-bearing part 21 is opened at the top of the concrete beam 1. The load-bearing part 21 is installed inside the first card slot 6, and the inner side of the connecting part 5 is attached to the side surface of the concrete beam 1. By providing the first card slot 6, it is used to install the load-bearing part 21 of the U-shaped metal ferrule 3. The first card slot 6 can limit the load-bearing part 21 to prevent the U-shaped metal ferrule 3 from shifting and improve the stability of the connection.

[0049] Furthermore, the support assembly includes a support plate 7. The support plate 7 is installed on the side of the connecting part 5 away from the concrete beam 1. The bottom of the metal sleeve 4 is connected to the top of the support plate 7. A raised block 8 is provided at the bottom of the metal sleeve 4, and a groove 9 adapted to the raised block 8 is opened at the top of the support plate 7. The raised block 8 is slidably embedded inside the groove 9. When the prestressed beam 2 is suspended and installed by a suspension device, the installation position of the prestressed beam 2 can be easily located by providing the groove 9 and the raised block 8.

[0050] Among them, the prestressed beam 2 is also made of reinforced concrete structure and is precast. In this way, the concrete structures at both ends are easily worn, and it is difficult to align them with the concrete beam 1 when installing due to unevenness. Therefore, by sleeving relatively regular metal sleeves 4 at both ends, not only can the two ends of the prestressed beam 2 be protected from wear, but also their regularity can be relied on to facilitate alignment with the connecting parts 5 made of the same metal material, improving the stability and convenience during connection.

[0051] Specifically, a triangular block 10 is installed at the bottom of the support plate 7. One side of the triangular block 10 is connected to the surface of the connecting part 5. A positioning block 11 is installed between the metal sleeve 4 and the connecting part 5. By providing the support plate 7, both ends of the prestressed beam 2 can be supported. The function of the triangular block 10 is to improve the support strength of the support plate 7.

[0052] It should be noted that: after the prestressed beam 2 contacts the connecting part 5 and the support plate 7 through the metal sleeve 4 and moves to the installation position, the metal sleeve 4 and the connecting part 5 can be connected through the positioning block 11. Since both the metal sleeve 4 and the connecting part 5 are made of metal, the connection method can adopt connection methods such as bolt connection and welding. This avoids drilling and damage on the outside of the concrete beam 1 and the prestressed beam 2, reduces the construction difficulty, and improves the convenience and stability of the connection.

[0053] Furthermore, four groups of dispersion components for dispersing pressure are embedded in the top of the concrete beam 1, and the dispersion components are installed in two groups on both sides of the U-shaped metal bushing 3. The dispersion components include four first steel profiles 12, and the first steel profiles 12 are symmetrically welded in two groups on both sides of the load-bearing part 21. A steel sleeve 13 is sleeved outside the first steel profile 12. A U-shaped outer eaves is integrally formed on the top of the outer side of the steel sleeve 13. A second card slot 14 adapted to the steel sleeve 13 is opened on the top of the concrete beam 1, and the steel sleeve 13 is embedded in the interior of the second card slot 14. A silicone sealant layer 15 is filled between the steel sleeve 13 and the second card slot 14. By providing the second card slot 14, it is convenient to install the steel sleeve 13, and the embedding method also improves the installation firmness. At the same time, by providing the silicone sealant layer 15, the gap between the steel sleeve 13 and the second card slot 14 can be filled, improving the connection effect and firmness between the steel sleeve 13 and the second card slot 14.

[0054] In addition, a rough surface is provided in both the bottom of the load-bearing part 21 and the interior of the first card slot 6, and a silicone sealant layer 15 is also filled between the load-bearing part 21 and the first card slot 6, which can better connect the load-bearing part 21 and the first card slot 6.

[0055] In addition, a support block 16 is installed at the bottom of the steel sleeve 13, the bottom of the support block 16 is attached to the bottom of the inner cavity of the second card slot 14, the outer side of the U-shaped outer eaves is attached to the inner wall of the second card slot 14, and injection holes 17 are provided on the surfaces of the bottom of the steel sleeve 13 and the U-shaped outer eaves. By providing the U-shaped outer eaves, it is possible to prevent the silicone sealant layer 15 from overflowing and improve the connection tightness.

[0056] It should be noted that: the support plate 7 and the connecting part 5 directly bear the gravity from the prestressed beam 2. However, since the connecting part 5 and the load-bearing part 21 are integrally formed, the connecting part 5 will transfer the pressure to the load-bearing part 21. The first steel profile 12 directly connected to the load-bearing part 21 is embedded in the steel sleeve 13. In this way, when the first steel profile 12 is loaded, the pressure can be evenly transferred to the steel sleeve 13, and then the steel sleeve 13 disperses the pressure, increasing the stress area of the concrete beam 1, which can slow down the local pressure and improve the overall load-bearing effect of the concrete beam 1.

[0057] Embodiment 2

[0058] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Fig. 9 and Figure 7 This Embodiment 2 is different from Embodiment 1 in that:

[0059] Reinforcement components for improving the overall stability are installed on both sides of the support component. The top of the reinforcement component is connected to one side of the dispersion component. The reinforcement component includes triangular frames 18 arranged on both sides of the connecting part 5. The inner side of the triangular frame 18 is fitted to the surface of the concrete beam 1. One right-angled side of the triangular frame 18 is connected to the side surface of the connecting part 5, and the top of the other right-angled side of the triangular frame 18 is flush with the top of the concrete beam 1. The triangular frame 18 is made of high-strength metal material, and the triangular structure has good stability.

[0060] Specifically, connecting rods 19 are equidistantly installed at the top of the triangular frame 18. The top of the connecting rod 19 extends above the first section steel 12. A connecting column 20 is installed inside the first section steel 12. The top of the connecting column 20 is connected to one end of the connecting rod 19. By providing the connecting column 20 and the connecting rod 19, the triangular frame 18 can be connected to the first section steel 12. First, the triangular frame 18 is located on the front and back sides of the concrete beam 1, which can improve the tightness and firmness of the connection between the U-shaped metal bushing 3 and the concrete beam 1. Second, when the first section steel 12 is subjected to pressure, the pressure can be transmitted to the triangular frame 18 through the connecting rod 19 and the connecting column 20, so as to further disperse the pressure, improve the load-bearing performance of the concrete beam 1, and prevent local overstress and collapse.

[0061] Among them, a strengthening component is installed on the top of the U-shaped metal bushing 3. Diagonal bracing components are installed on both sides of the strengthening component. The diagonal bracing components are connected to the top of the reinforcement component. The strengthening component includes a second section steel 22, which is symmetrically arranged on the top of the load-bearing part 21. First cross bars 23 are installed at both ends between the second section steels 22. A first screw rod 24 is installed on the top of the load-bearing part 21. The top of the first screw rod 24 passes through the first cross bar 23 and is threadedly sleeved with a first nut 25. Second cross bars are equidistantly installed between the second section steels 22. Connecting brackets 26 are installed at both ends of the second section steel 22. A V-shaped frame 27 is installed on the top of the second section steel 22. A third section steel 28 is installed on the top of the V-shaped frame 27. Third cross bars 29 are equidistantly installed between the third section steels 28. By providing the second section steel 22, the U-shaped metal bushings 3 at both ends of the prestressed beam 2 can be connected from the top of the prestressed beam 2, which is equivalent to forming an external skeleton outside the prestressed beam 2, thus improving the firmness of the connection of the prestressed beam 2. By providing the first screw rod 24 and the first nut 25, the second section steel 22 can be connected and fixed to the load-bearing part 21.

[0062] In addition, a V-shaped frame 27 and a third steel section 28 are provided to reinforce the second steel section 22, thereby achieving three-dimensional load-bearing and further improving the load-bearing effect and compression resistance of the prestressed beam 2. In addition, in Example 1, the prestressed beam 2 is connected and fixed to the concrete beam 1 through a supporting component. In this embodiment, the prestressed beam 2 can be further connected and fixed to the concrete beam 1 through a reinforcing component, which is suitable for high-strength construction requirements, such as some factory buildings and factory warehouses.

[0063] It is worth noting that the diagonal brace assembly includes a first rod 30, which is equidistantly installed between the tripods 18, and a second rod 31 is installed between the first rod 30 and the third steel 28, and the second rod 31 is arranged in an inclined shape. By setting the diagonal brace assembly, the reinforcement assembly can be connected to the tripod 18, so that a stable triangular structure is formed between the dispersion assembly, the diagonal brace assembly and the reinforcement assembly, which improves the overall stability and further improves the firmness of the connection node.

[0064] Example 3

[0065] This embodiment 3 also proposes a construction method for forming a connection node between a prestressed beam and a cast-in-place concrete beam, comprising the following steps:

[0066] S1. Size selection and measurement: select and measure the sizes of concrete beams and prefabricated prestressed beams required for construction according to the construction plan;

[0067] S2. Designing the dimensions of the connection nodes in advance according to the selected and measured dimensions, and selecting materials and assembling the connection nodes according to the advance design;

[0068] S3, mold making. Since it is necessary to install a connection node on the concrete beam, a corresponding concrete beam casting mold is made according to the size and shape of the connection node, and the connection position between the connection node and the concrete beam is determined in advance;

[0069] S4, after the corresponding concrete beam casting mold is manufactured and installed, the concrete beam is cast in the concrete beam casting mold, and demoulding is performed after the concrete beam is solidified;

[0070] S5. Installation of the connection node: after demoulding, the connection node is installed at a predetermined position on the concrete beam;

[0071] S6. The prestressed beam is connected to the connection node by means of a suspension device, and further fixed and tested after the connection, and finally the connection between the prestressed beam and the concrete beam is completed.

Claims

1. A connection node between a prefabricated prestressed beam and a cast-in-place concrete beam, comprising a connection assembly clamped on the outside of a concrete beam (1) and connected to a prestressed beam (2), characterized in that: The connecting component includes a U-shaped metal ferrule (3), the U-shaped metal ferrule (3) is clamped outside the concrete beam (1), and a support component for supporting and fixing the prestressed beam (2) is installed outside the U-shaped metal ferrule (3) and on the outer side of the concrete beam (1); Metal sleeves (4) are installed at both ends of the prestressed beam (2), and both ends of the prestressed beam (2) are connected to the support component through the metal sleeves (4); Four groups of dispersion components for dispersing pressure are embedded in the top of the concrete beam (1), and the dispersion components are installed in pairs on both sides of the U-shaped metal ferrule (3); Reinforcement components for improving the overall stability are installed on both sides of the support component, and the top of the reinforcement component is connected to one side of the dispersion component; A strengthening component is installed on the top of the U-shaped metal ferrule (3), and diagonal bracing components are installed on both sides of the strengthening component, and the diagonal bracing components are connected to the top of the reinforcement component.

2. A connection node between a prefabricated prestressed beam and a cast-in-place concrete beam according to claim 1, characterized in that: The U-shaped metal ferrule (3) includes a load-bearing part (21) and connecting parts (5) installed on both sides of the load-bearing part (21). A first clamping groove (6) adapted to the load-bearing part (21) is opened at the top of the concrete beam (1), the load-bearing part (21) is installed inside the first clamping groove (6), and the inner side of the connecting part (5) is attached to the side surface of the concrete beam (1).

3. A connection node between a prefabricated prestressed beam and a cast-in-place concrete beam according to claim 1, characterized in that: The support component includes a support plate (7), the support plate (7) is installed on the side of the connecting part (5) away from the concrete beam (1), the bottom of the metal sleeve (4) is connected to the top of the support plate (7), a raised block (8) is arranged at the bottom of the metal sleeve (4), a groove (9) adapted to the raised block (8) is opened at the top of the support plate (7), the raised block (8) is slidably embedded inside the groove (9), a triangular block (10) is installed at the bottom of the support plate (7), one side of the triangular block (10) is connected to the surface of the connecting part (5), and a positioning block (11) is installed between the metal sleeve (4) and the connecting part (5).

4. A connection node between a prefabricated prestressed beam and a cast-in-place concrete beam according to claim 1, characterized in that: The dispersion component includes four first profiled steels (12), the first profiled steels (12) are symmetrically welded in pairs on both sides of the load-bearing part (21), a steel sleeve (13) is sleeved outside the first profiled steel (12), a U-shaped outer eaves is integrally formed at the top of the outer side of the steel sleeve (13), a second clamping groove (14) adapted to the steel sleeve (13) is opened at the top of the concrete beam (1), the steel sleeve (13) is embedded inside the second clamping groove (14), and a silicone sealant layer (15) is filled between the steel sleeve (13) and the second clamping groove (14).

5. A connection node between a prefabricated prestressed beam and a cast-in-place concrete beam according to claim 4, characterized in that: A support block (16) is installed at the bottom of the steel sleeve (13), the bottom of the support block (16) is attached to the bottom of the inner cavity of the second clamping groove (14), the outer side of the U-shaped outer eaves is attached to the inner wall of the second clamping groove (14), and injection holes (17) are opened on the bottom of the steel sleeve (13) and the surface of the U-shaped outer eaves.

6. A connection node between a prefabricated prestressed beam and a cast-in-place concrete beam according to claim 1, characterized in that: The reinforcement assembly comprises tripods (18) arranged on both sides of the connection part (5), the inner side of the tripod (18) is in contact with the surface of the concrete beam (1), one right-angled side of the tripod (18) is connected to the side of the connection part (5), and the top of the other right-angled side of the tripod (18) is flush with the top of the concrete beam (1).

7. A connection node between a prefabricated prestressed beam and a cast-in-place concrete beam according to claim 6, characterized in that: Connecting rods (19) are equidistantly installed on the top of the tripod (18), and the top of the connecting rod (19) extends to the top of the first steel section (12). A connecting column (20) is installed inside the first steel section (12), and the top of the connecting column (20) is connected to one end of the connecting rod (19).

8. The connection node between a prefabricated prestressed beam and a cast-in-place concrete beam according to claim 1, characterized in that: The reinforcing assembly comprises a second steel section (22), the second steel section (22) being symmetrically arranged at the top of the load-bearing part (21), a first cross bar (23) being installed at both ends between the second steel sections (22), a first screw rod (24) being installed at the top of the load-bearing part (21), the top of the first screw rod (24) passing through the first cross bar (23) and being threadedly sleeved with a first screw sleeve (25), second cross bars being equidistantly installed between the second steel sections (22), connecting frames (26) being installed at both ends of the second steel sections (22), a V-shaped frame (27) being installed at the top of the second steel section (22), a third steel section (28) being installed at the top of the V-shaped frame (27), and third cross bars (29) being equidistantly installed between the third steel sections (28).

9. The connection node between a prefabricated prestressed beam and a cast-in-place concrete beam according to claim 1, characterized in that: The diagonal brace assembly comprises a first rod body (30), the first rod body (30) being equidistantly installed between the tripods (18), a second rod body (31) being installed between the first rod body (30) and the third steel section (28), the second rod body (31) being arranged in an inclined shape.

10. The construction method for forming a connection node between a prestressed beam and a cast-in-place concrete beam according to any one of claims 1 to 9, characterized in that: The steps include: S1. Size selection and measurement: select and measure the sizes of concrete beams and prefabricated prestressed beams required for construction according to the construction plan; S2. Designing the dimensions of the connection nodes in advance according to the selected and measured dimensions, and selecting materials and assembling the connection nodes according to the advance design; S3, mold making. Since it is necessary to install a connection node on the concrete beam, a corresponding concrete beam casting mold is made according to the size and shape of the connection node, and the connection position of the connection node and the concrete beam is determined in advance; S4, after the corresponding concrete beam casting mold is manufactured and installed, the concrete beam is cast in the concrete beam casting mold, and demoulding is performed after the concrete beam is solidified; S5. Installation of the connection node: after demoulding, the connection node is installed at a predetermined position on the concrete beam; S6. The prestressed beam is connected to the connection node by means of a suspension device, and further fixed and tested after the connection, and finally the connection between the prestressed beam and the concrete beam is completed.

Images