An assembled concrete frame joint structure and construction method

Abstract

The present invention relates to an assembled concrete frame node structure and a construction method, comprising prefabricated components and node parts. The prefabricated components include a component body, which adopts a reinforced concrete structure. The end of the component body is inserted into a sleeve, and the longitudinal steel bars of the component body are fixed to the partition in the sleeve by a fixing piece. The node part is provided with a slot, and the end of the component body is inserted into the slot and fixed to the node part by a threaded fastener. The node structure of the present invention speeds up the construction progress and ensures the construction quality.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to an assembled concrete frame node structure and a construction method. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Prefabricated concrete structures offer advantages such as high production efficiency, rapid construction, and easy quality assurance. Existing methods for connecting vertical reinforcement in prefabricated concrete structures primarily rely on grouting sleeves and grouting anchors. During construction, the vertical reinforcement must be inserted into the grouting sleeves, which are then grouted. This connection method can compromise the integrity of the structure if the grouting is not dense, posing a safety hazard. Furthermore, wet operations such as grouting require time for curing, slowing down the construction process and hindering progress. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a prefabricated concrete frame node structure with the advantages of fast construction speed and reliable quality.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In the first aspect, an embodiment of the present invention provides an assembled concrete frame node structure, including prefabricated components and node parts, the prefabricated components include a component body, the component body adopts a reinforced concrete structure, its end is inserted into a sleeve, and the longitudinal steel bars of the component body are fixed to the partition in the sleeve by a fixing member, and the node part is provided with a slot, the end of the component body is inserted into the slot and fixed to the node part by a threaded fastener.

[0007] Optionally, the sleeve adopts a cylindrical structure with open ends, including multiple side plates, which enclose the cylindrical structure. A partition perpendicular to the axis of the sleeve is provided on the inner side of the side plate, and the partition is provided with a through hole for the longitudinal steel bars of the component body to pass through.

[0008] Optionally, the fixing member adopts a fixing nut, and the end of the longitudinal steel bar is provided with a threaded section, the threaded section passes through the partition, and the threaded sections on both sides of the partition are threadedly connected with fixing nuts, and the fixing nuts are in contact with the partition.

[0009] Optionally, the partition separates the space inside the sleeve into a first space and a second space, wherein the first space is used to accommodate the end of the component body, and a fixing hole is provided on the sleeve wall corresponding to the second space.

[0010] Optionally, a clamping plate is provided on the inner side surface of the sleeve wall corresponding to the second space, and correspondingly, a clamping head that cooperates with the clamping plate is provided inside the slot of the node component. After the sleeve is inserted into the slot, the clamping head and the clamping plate are clamped and cooperated.

[0011] Optionally, the node component includes a node body, the node body is provided with an overboot, the overboot is formed by multiple side panels, the multiple side panels form a slot matching the sleeve, the side panels of the overboot are provided with fixing holes and are fixed to the sleeve inserted therein through the fixing holes and threaded fasteners.

[0012] In a second aspect, an embodiment of the present invention provides a construction method of the prefabricated concrete frame node structure according to the first aspect, comprising the following steps:

[0013] Fix the longitudinal reinforcement of the component body with the fixing piece and the spacer of the sleeve, tie the stirrups of the component body, and then pour concrete on the component body;

[0014] The cast component body is hoisted so that the sleeve at the end of the component body is inserted into the slot of the node component, and then the sleeve and the node component are fixed by threaded fasteners.

[0015] In a third aspect, an embodiment of the present invention provides an assembled concrete frame node structure, comprising prefabricated components and node parts, wherein the prefabricated components include a component body, an end plate is provided at the end of the component body, the longitudinal reinforcement of the component body is fixed to the end plate by a fixing member, the component body is provided on one side of the end plate, and a connecting member is provided on the other side, and the connecting member is threadedly connected to the node part.

[0016] Optionally, the end plate is provided with a through hole for the longitudinal reinforcement of the component body to pass through, and the fixing member adopts fixed reinforcement located on both sides of the end plate, the fixed reinforcement is fixed to the longitudinal reinforcement, and the fixed reinforcement is in contact with the end plate.

[0017] In a fourth aspect, an embodiment of the present invention provides a construction method of the prefabricated concrete frame node structure according to the third aspect, comprising the following steps:

[0018] Fix the ends of the longitudinal reinforcement of the component body to the end plates through fixings, tie the stirrups of the component body, and then pour concrete into the component body;

[0019] Lift the cast component body and thread the connectors to the node components.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. In the node structure of the present invention, the longitudinal reinforcement of the component body is fixed to the partition in the sleeve through the fixing piece, and the sleeve and the node component are plugged into each other through the slot and then connected through the threaded fastener, or the longitudinal reinforcement of the component body is fixed to the end plate through the fixing piece, and the connecting piece connected to the end plate is threadedly connected to the node component, and the longitudinal reinforcement does not need to be fixed by the grouting sleeve. After the component body is prefabricated, there is no need to perform wet operations such as grouting during on-site construction, which avoids the defects caused by loose grouting, saves maintenance time, and speeds up the construction progress.

[0022] 2. In the node structure of the present invention, a clamping plate is provided on the inner side surface of the sleeve wall corresponding to the second space, and correspondingly, a clamping head that cooperates with the clamping plate is provided inside the slot of the node component. After the sleeve is inserted into the slot, the clamping head and the clamping plate are clamped together. The clamping head and the clamping plate play a temporary fixing role for the prefabricated components and the connecting components, preventing the prefabricated components from falling off, thereby facilitating construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Figure 1 This is a schematic diagram of the partition structure of Example 1 of the present invention;

[0025] Figure 2 1 is a schematic diagram of the side plate structure of the sleeve in Example 1 of the present invention;

[0026] Figure 3 This is a schematic diagram of the sleeve structure of Example 1 of the present invention;

[0027] Figure 4 This is a schematic diagram of the connection between the sleeve and the longitudinal steel bar in Example 1 of the present invention;

[0028] Figure 5 This is a schematic diagram of the process of connecting the sleeve and the longitudinal steel bar in Example 1 of the present invention;

[0029] Figure 6 This is a schematic diagram of the node component structure of Example 1 of the present invention;

[0030] Figure 7 This is a schematic diagram of the assembly of the node component, prefabricated beams, and prefabricated columns according to Example 1 of the present invention;

[0031] Figure 8 This is a schematic diagram of the node structure of Example 1 of the present invention;

[0032] Figure 9 This is a top view of the card block distribution in Example 1 of the present invention;

[0033] Figure 10This is a front view of the card block distribution in Example 1 of the present invention;

[0034] Figure 11 This is a top view of the clamping head distribution in Example 1 of the present invention;

[0035] Figure 12 This is a front view of the clamping head distribution in Example 1 of the present invention;

[0036] Figure 13 This is a diagram of the matching process between the clamping head and the clamping block in Example 1 of the present invention;

[0037] Figure 14 This is a schematic diagram of the structure of a prefabricated component according to embodiment 3 of the present invention;

[0038] Figure 15 This is a schematic diagram of the end plate structure of Example 3 of the present invention;

[0039] Figure 16 This is a schematic diagram of the structure of the connector according to embodiment 3 of the present invention;

[0040] Figure 17 This is a schematic diagram of the connection between the connector and the end plate in Example 3 of the present invention;

[0041] Figure 18 This is a schematic diagram of the fixing process of the longitudinal reinforcement and the end plate in Example 3 of the present invention;

[0042] Figure 19 This is a top view of the connection between the longitudinal reinforcement and the fixed reinforcement in Example 3 of the present invention;

[0043] Figure 20 This is a schematic diagram of the assembly of longitudinal reinforcement and end plates according to embodiment 3 of the present invention;

[0044] Figure 21 This is a schematic diagram of the structure of the node components of Example 3 of the present invention;

[0045] Figure 22 This is a schematic diagram of the connecting sleeve structure of Example 3 of the present invention;

[0046] Figure 23 This is a schematic diagram of the exploded structure of the node structure of Example 3 of the present invention;

[0047] Figure 24 This is a schematic diagram of the node structure of Example 3 of the present invention;

[0048] Among them, 1. longitudinal steel bar, 2. side plate, 3. partition, 4. through hole, 5. first external thread structure, 6. fixing nut, 7. threaded hole I, 8. first bottom plate, 9. second bottom plate, 10. side plate, 11. upper boot, 12. threaded hole II, 13. lower boot, 14. side boot, 15. threaded hole III, 16. bolt, 17. upper precast column, 18. lower precast column, 19. precast beam, 20. block, 21. clamp, 22. joint, 23. end plate, 24. through hole, 25. fixing steel bar, 26. connector, 27. component body, 28. column fixing part, 29. beam fixing part, 30. connecting sleeve, 31. second external thread structure. DETAILED DESCRIPTION

[0049] For the convenience of description, if the words "upper" and "lower" appear in the present invention, they only indicate that they are consistent with the upper and lower directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0050] Example 1

[0051] This embodiment provides an assembled concrete frame node structure, including prefabricated components and node parts. The prefabricated components and the node parts are fixedly connected by threaded fasteners to form the entire node structure.

[0052] In this embodiment, the prefabricated components include prefabricated columns and prefabricated beams, so the upper and lower parts of the node component are fixed to the prefabricated columns by threaded fasteners, and the four side parts of the node component are fixed to the prefabricated beams by threaded fasteners.

[0053] The precast columns and precast beams have the same structure and both include a component body. The component body is the same as the existing precast columns and precast beams and adopts a reinforced concrete structure, including concrete and a steel cage embedded in the concrete. The steel cage includes multiple longitudinal steel bars 1, and stirrups are tied between the longitudinal steel bars 1. Both ends of the longitudinal steel bars 1 extend to the outside of the component concrete.

[0054] An inserting portion is provided at the end of the component body used for connecting with the node component. The inserting portion is inserted into the interior of the sleeve, and the component body is connected to the node component through the sleeve.

[0055] The shape of the sleeve matches the shape of the component body, and its cross-sectional size matches the cross-sectional size of the component body. In this embodiment, the component body adopts a cubic structure, so the sleeve adopts a cubic structure.

[0056] like Figure 1-Figure 3As shown, the sleeve is enclosed by four side panels 2 and is a cylindrical structure with open ends. A partition 3 is provided inside the sleeve, and the four edges of the partition 3 are respectively welded and fixed to the inner side surfaces of the four side panels 2. The partition 3 divides the internal space of the sleeve into a first space and a second space, wherein the first space is used to accommodate the insertion portion at the end of the component body, and the sleeve wall corresponding to the second space is fixedly connected to the connecting component by threaded fasteners.

[0057] In this embodiment, the side panels 2 and the partition panels 3 are both made of steel plates, which are convenient for material acquisition and welding and fixing.

[0058] The partition 3 is fixed to the end of the longitudinal reinforcement 1 of the component body extending outside the concrete through a fixing piece.

[0059] like Figure 4-Figure 5 As shown, specifically, a plurality of through holes 4 are provided on the partition plate 3 , and the size and position of the through holes 4 match the size and position of the longitudinal reinforcement 1 of the component body.

[0060] The end of the longitudinal steel bar 1 extending outside the concrete is processed with a first external thread structure 5 by a threading machine. Accordingly, the fixing member adopts two fixing nuts 6, and the length of the first external thread structure 5 is greater than the sum of the thickness of the partition 3 and the two fixing nuts 6.

[0061] In this embodiment, after the longitudinal steel bar 1 passes through the partition 3 through the through hole 4, two fixing nuts 6 are threadedly connected to the first external thread structure 5 of the longitudinal steel bar 1 on both sides of the partition 3, and the two fixing nuts 6 are respectively pressed on the two sides of the partition 3, thereby achieving the longitudinal steel bar 1 being fixed to the partition 3 through the fixing nuts 6.

[0062] The side panel portion corresponding to the second space is provided with a plurality of threaded holes I7 for fixing to the node component via threaded fasteners. In this embodiment, the fixing holes on the side panel are arranged in an array within a rectangular range. Preferably, four fixing holes are provided on the side panel.

[0063] like Figure 6As shown, the node component includes a node body, which is surrounded by four side plates 10. The space enclosed by the four side plates 10 matches the shape and size of the sleeve, and its cross-sectional size is slightly larger than the cross-sectional size of the sleeve. The internal space of the four side plates 10 is provided with a first base plate 8 and a second base plate 9 arranged in parallel. The side plate portion above the first base plate 8 forms an upper boot 11, and the internal space of the upper boot 11 serves as a slot for the upper prefabricated column. A threaded hole II12 is provided on the side plate corresponding to the upper boot 11, and the threaded hole II12 matches the threaded hole I7 provided in the sleeve. The side plate 10 portion below the second base plate 9 forms a lower boot 13, and the internal space of the lower boot 13 serves as a slot for the lower prefabricated column. A fixing hole is provided on the side plate corresponding to the lower boot 13, and the fixing hole matches the threaded hole I7 provided in the sleeve.

[0064] A U-shaped plate, serving as a side shoe 14, is fixed to the outer surface of each side panel 10, corresponding to the position between the first and second base panels 8 and 9. This plate comprises a horizontal portion and vertical portions at either end of the horizontal portion. The distance between the two vertical portions is slightly greater than the width of the sleeve. The interior space of the U-shaped plate serves as a slot for the precast beam. The vertical portion of the side shoe 14 is provided with a threaded hole III15, which mates with the threaded hole I7 on the sleeve.

[0065] The side boot 14 adopts a U-shaped structure with an upper opening to facilitate the installation of the prefabricated beam.

[0066] like Figure 7-Figure 8 As shown, in this embodiment, the threaded fasteners use screws and nuts 16, the sleeve at the bottom of the upper prefabricated column 17 is inserted into the slot of the upper boot 11, the fixing holes are aligned and passed through the screw, and after the screw passes through the fixing holes and the two opposite side plates and sleeves of the upper boot, it extends to the two ends of the outer side of the upper boot and is threadedly connected to the nuts 16. The two nuts are pressed against the outer sides of the two opposite side plates of the upper boot to achieve the fixation of the upper prefabricated column 17 and the node component, the sleeve at the top of the lower prefabricated column 18 is inserted into the slot of the lower boot 13, and the screw and nut 16 are installed in the same way after the fixing holes are aligned to achieve the fixation of the lower prefabricated column 18 and the node component, the sleeve at the end of the prefabricated beam 19 is inserted into the slot of the side boot 14, and the screw and nut 16 are installed in the same way after the fixing holes are aligned to achieve the fixation of the prefabricated beam 19 and the node component.

[0067] When this method is used, the fixing holes of the two opposite side plates in the upper boot and the lower boot are aligned, the fixing holes of the other two opposite side plates are aligned, and the fixing holes of the two side plates perpendicular to each other are staggered to avoid mutual interference in the installation of the screws.

[0068] In the node structure of this embodiment, the longitudinal steel bars are fixed to the partition inside the sleeve by two fixing nuts. The sleeve and the node component are plugged into the slot and then connected by bolts. The longitudinal steel bars do not need to be fixed by the grouting sleeve. During the connection process of the component body, the longitudinal steel bars do not need to be inserted into the internal space of the grouting sleeve, thereby reducing the processing accuracy requirements of the component. After the component body is prefabricated, there is no need to perform wet operations such as grouting during on-site construction, which avoids the defects caused by loose grouting, saves maintenance time, and speeds up the construction progress.

[0069] like Figures 9-12 As shown, in order to temporarily fix the prefabricated beam or prefabricated column after inserting it into the slot and prevent it from detaching, a clamping block 20 is provided on the inner side of the sleeve wall corresponding to the second space. The clamping block 20 is arranged between the threaded holes to avoid affecting the insertion of the bolts. The clamping block 20 adopts a right-angled triangle structure. The thickness of the clamping block 20 gradually decreases in the direction approaching the slot. Correspondingly, a clamping head 21 matching the clamping head 20 is provided in the slot. One end of the clamping head 21 is fixed to the side plate 10 of the node component, and the other end is provided with a protrusion facing outward.

[0070] like Figure 13 As shown, when the sleeve is inserted into the slot, the surface corresponding to the oblique side of the card block can contact the boss, driving the card head to bend and deform until the card block passes over the boss, and the card head returns to its original shape. The boss contacts the end face of the card block with the largest thickness, realizing the card block and the card head being fixed together, thereby achieving temporary fixation of the prefabricated component.

[0071] Example 2

[0072] This embodiment provides a construction method of the assembled concrete node structure described in Example 1, comprising the following steps:

[0073] Step 1: Process the sleeves at the ends of precast beams and precast columns.

[0074] Step 2: Use a threading machine to process external thread structures at both ends of the longitudinal reinforcement of prefabricated columns and prefabricated beams. First, tighten a fixing nut on the external thread structure, then pass the longitudinal reinforcement through the through hole through the partition, and tighten another fixing nut on the other side of the partition to fix the sleeve at one end of the longitudinal reinforcement. Use the same method to fix the sleeve at the other end of the longitudinal reinforcement, and then tie stirrups on the longitudinal reinforcement.

[0075] Step 3: Set up the formwork and pour concrete on the precast columns and precast beams.

[0076] Step 4: Process the node components. The node includes a node body. The node body is provided with an upper boot, a lower boot and four side boots (if it is a side span frame, there are side boots on three sides, and if it is a corner frame, there are side boots on two sides).

[0077] Step 5: After hoisting the node assembly using a crane, align the lower overshoe with the upper sleeve of the precast column installed below. Slowly lower it so that the clamping head in the lower overshoe engages with the clamping block in the upper sleeve of the precast column below, temporarily securing it. After the node assembly is positioned correctly, secure it to the sleeve of the precast column below using screws and nuts.

[0078] Step 6: Use a crane to align the bottom sleeve of the upper prefabricated column with the upper boot of the node component, then insert the bottom sleeve of the upper prefabricated column into the upper boot, and then use screws and nuts to fix the sleeve to the upper boot. Use a crane to lift the prefabricated beam, place the sleeve of the prefabricated beam into the side boot, and then use screws and nuts to fix the sleeve to the side boot.

[0079] Step 7: After the prefabricated columns and prefabricated beams of the entire layer are hoisted, weld the joints 22 between the sleeve and the boot firmly, and then start hoisting the next layer.

[0080] Example 3

[0081] This embodiment provides an assembled concrete frame node structure, including prefabricated components and node parts, such as Figure 14 As shown, the prefabricated component is a prefabricated beam or a prefabricated column, and the prefabricated component includes a component body. The component body adopts a reinforced concrete structure, including concrete, and a steel cage inside the concrete. The steel cage includes a plurality of longitudinal steel bars 1, and a plurality of stirrups are tied between the longitudinal steel bars 1. The two ends of the longitudinal steel bars 1 extend to the outside of the concrete.

[0082] The end of the component body is provided with an end plate 23, such as Figure 15 As shown, the shape of the end plate 23 matches the shape of the component body. In this embodiment, the cross section of the component body is square, so the shape of the end plate is square, and the cross-sectional size of the end plate is the same as the cross-sectional size of the component body.

[0083] like Figures 18-20 As shown, a plurality of through holes 24 are provided on the end plate 23, and the size and position of the through holes 24 match the size and position of the longitudinal steel bars 1. The longitudinal steel bars 1 pass through the end plate 23 through the through holes 24 and are fixed to the end plate through fixing members. In this embodiment, the fixing members are fixed steel bars 25 located on both sides of the end plate. The diameter of the fixed steel bars 25 is the same as the diameter of the longitudinal steel bars 1. Each longitudinal steel bar 1 is equipped with a plurality of fixed steel bars 25, which are welded and fixed to the longitudinal steel bars 1. The fixed steel bars 25 are in contact with the side of the end plate 23 to fix the longitudinal steel bars 1 to the end plate 23.

[0084] Parts of the longitudinal reinforcement 1 on both sides of the end plate 23 are welded and fixed with a plurality of fixed reinforcements 25 arranged along the circumference, and the plurality of fixed reinforcements 25 are arranged at equal intervals.

[0085] In this embodiment, four fixing steel bars 25 are welded and fixed along the circumference of the longitudinal steel bars 1 located on both sides of the end plate 23 , that is, adjacent fixing steel bars 25 are arranged at intervals of 90°.

[0086] One side of the end plate 23 is a component body 27, and the center position of the other side is provided with a connecting piece 26, such as Figure 16-17 As shown, the connecting member 26 is a cylindrical structure with a diameter smaller than the side length of the end plate. The connecting member 26 is threadedly connected to the node component.

[0087] like Figure 21 As shown, the node component includes a plurality of column fixing members 28 and two beam fixing members 29. The column fixing members 28 and the two beam fixing members 29 are orthogonally welded and fixed to form a whole. The two ends of the column fixing member 28 serve as the connection ends of the precast column, and the two ends of the beam fixing member 29 serve as the connection ends of the precast beam (if it is a side span frame, only one end of one beam fixing member serves as the connection end of the precast beam; if it is a corner frame, only one end of the two beam fixing members serves as the connection end of the precast beam). The two ends of the column fixing member 28 and the beam fixing member 29 are both threadedly connected with a connecting sleeve 30, as shown in FIG. Figure 22 As shown, both ends of the connecting sleeve 30 have internal thread structures, wherein the internal thread structure at one end is used for threaded connection with the column fixing member 28 and the beam fixing member 29 , and the internal thread structure at the other end is used for threaded connection with the connecting member 26 .

[0088] Therefore, the column fixing member, the beam fixing member and the end of the connector are all provided with a second external thread structure 31, and the length of the external thread structure 30 is greater than 2 times the installation and fixing length.

[0089] The internal thread structures on both sides of the connecting sleeve for connecting to the column fixing piece have opposite thread rotation directions, and the internal thread structures on both sides of the connecting sleeve for connecting to the beam fixing piece have the same thread rotation direction.

[0090] like Figure 23-24 As shown, the prefabricated columns are connected to the column fixing members of the node components through the connecting members and the connecting sleeves, and the prefabricated beams are connected to the beam fixing members of the node components through the connecting members and the connecting sleeves, thereby forming the entire node structure.

[0091] Example 4

[0092] This embodiment provides a construction method of the assembled concrete node structure described in Embodiment 3, comprising the following steps:

[0093] Step 1: Process the end plate, process through holes on the end plate that match the longitudinal steel bars, weld fixed steel bars around the through holes on both sides of the end plate, weld connecting pieces on one side of the end plate, and process external thread structures on the ends of the connecting pieces.

[0094] Step 2: Pass the longitudinal reinforcement through the end plate through the through hole, and then weld the fixed reinforcement to the longitudinal reinforcement parts on both sides of the end plate. The fixed reinforcement is in contact with the end plate to achieve the fixation of the longitudinal reinforcement and the end plate. Then, tie stirrups between multiple longitudinal reinforcements. After the stirrups are tied, set up the formwork and pour the concrete of the component body.

[0095] Step 3: Process the node components, machine external threads on both ends of the column fixture and the two beam fixtures, and weld the column fixtures and the two beam fixtures orthogonally to each other. The length of the external threads of the beam fixtures should be greater than twice the installation length.

[0096] Step 4: Process the connecting sleeve. Both ends of the connecting sleeve are processed with internal thread structures. The internal thread structures at both ends of the connecting sleeve used for connecting to the column fixing piece have opposite rotation directions, and the internal thread structures at both ends of the connecting sleeve used for connecting to the beam fixing piece have the same rotation direction.

[0097] Step 5: After using a crane to lift the node component, align the column fixing piece with the connector at the top of the lower prefabricated column, and insert the connecting sleeve into the gap between the column fixing piece and the connector of the lower prefabricated column. After the three are in contact with each other, rotate the connecting sleeve so that the column fixing piece and the connector gradually enter the connecting sleeve.

[0098] Step 6: Lift the connecting sleeve used to connect to the beam fixing piece horizontally, and gradually screw the connecting sleeve into the end of the beam fixing piece. The screwing length should be greater than 2 times the installation fixed length. After the prefabricated beam is dropped horizontally, one end of the connecting sleeve is connected to the connecting piece thread at the end of the prefabricated beam, and the other end is gradually screwed out from the end of the beam fixing piece until the installation fixed length is reached.

[0099] Step 7: After all prefabricated columns and prefabricated beams of this layer are hoisted, start hoisting the next layer.

[0100] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An assembled concrete frame node structure, comprising prefabricated components and node parts, characterized in that: The prefabricated component includes a component body, which is made of reinforced concrete structure, and its end is inserted into the sleeve, and the longitudinal steel bars of the component body are fixed to the partition in the sleeve by a fixing piece, and the node component is provided with a slot, and the end of the component body is inserted into the slot and fixed to the node component by a threaded fastener; the node component includes a node body, and the node body is provided with an overshoe, which is surrounded by a plurality of side panels, and the plurality of side panels enclose a slot matching the sleeve, and the side panels of the overshoe are provided with threaded holes and fixed to the sleeve inserted therein by the threaded holes and threaded fasteners; The partition separates the space inside the sleeve into a first space and a second space, wherein the first space is used to accommodate the end of the component body, and a fixing hole is provided on the sleeve wall corresponding to the second space; a clamping plate is provided on the inner side surface of the sleeve wall corresponding to the second space, and accordingly, a clamping head that cooperates with the clamping plate is provided inside the slot of the node component. After the sleeve is inserted into the slot, the clamping head and the clamping plate are clamped and matched.

2. The assembled concrete frame node structure according to claim 1, characterized in that: The sleeve adopts a cylindrical structure with open ends, including multiple side plates. The multiple side plates form a cylindrical structure. A partition perpendicular to the axis of the sleeve is provided on the inner side of the side plate. The partition is provided with an opening for the longitudinal steel bars of the component body to pass through.

3. The assembled concrete frame node structure according to claim 1, characterized in that: The fixing piece adopts a fixing nut. The end of the longitudinal steel bar is provided with a threaded section, which passes through the partition. The threaded sections on both sides of the partition are threadedly connected with fixing nuts, and the fixing nuts are in contact with the partition.

4. A construction method for an assembled concrete frame node structure according to any one of claims 1 to 3, characterized in that: The following steps are involved: Fix the longitudinal reinforcement of the component body with the fixing piece and the spacer of the sleeve, tie the stirrups of the component body, and then pour concrete on the component body; The cast component body is hoisted so that the sleeve at the end of the component body is inserted into the slot of the node component, and then the sleeve and the node component are fixed by threaded fasteners.

5. An assembled concrete frame node structure, comprising prefabricated components and node parts, characterized in that: The prefabricated component includes a component body, an end plate is provided at the end of the component body, the longitudinal reinforcement of the component body is fixed to the end plate through a fixing piece, the component body is provided on one side of the end plate, and a connecting piece is provided on the other side, and the connecting piece is threadedly connected to the node component; the connecting piece is a cylindrical structure, which is threadedly connected to the node component, and the node component includes a column fixing piece and a beam fixing piece, and its end is provided with a connecting sleeve with an internal thread, so the column fixing piece, the beam fixing piece and the connecting piece end are all provided with a second external thread structure, and the length of the external thread structure is greater than 2 times the installation and fixing length.

6. The assembled concrete frame node structure according to claim 5, characterized in that: The end plates are provided with through holes for the longitudinal reinforcement of the component body to pass through. The fixing members are fixed reinforcements located on both sides of the end plates. The fixed reinforcements are fixed to the longitudinal reinforcements and are in contact with the end plates.

7. A construction method for an assembled concrete frame node structure according to any one of claims 5 to 6, characterized in that: The following steps are involved: Fix the ends of the longitudinal reinforcement of the component body to the end plates through fixings, tie the stirrups of the component body, and then pour concrete into the component body; Lift the cast component body and thread the connectors to the node components.

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