Prefabricated concrete composite pipe column ring beam joint connecting structure

Abstract

The invention discloses a precast concrete laminated tubular column ring beam joint connecting structure, which comprises a precast concrete outer pipe, a column core reinforcement cage inserted into the middle part of the precast concrete outer pipe and a cast-in-place concrete column core poured in the middle part of the precast concrete outer pipe, and is a cross-layer through high column; the ring beam joint connecting structure is located between floors where the prefabricated concrete composite pipe column penetrates through, the ring beam joint connecting structure comprises shear-resistant ribs and a cast-in-place ring beam, the cast-in-place ring beam is formed by casting around the outer wall of a prefabricated concrete outer pipe in situ, a ring beam reinforcement cage is arranged in the cast-in-place ring beam, the shear-resistant ribs surround and are fixed to the outer wall of the prefabricated concrete outer pipe, and the shear-resistant ribs surround and are fixed to the outer wall of the prefabricated concrete outer pipe. The shear ribs are located between the cast-in-place ring beam and the prefabricated concrete outer pipe, and the prefabricated concrete composite pipe column is connected with the beam structure through the cast-in-place ring beam. According to the prefabricated concrete composite pipe column, the problem of connection of beam-column joints at a full-height or half-layer position in a prefabricated building adopting the prefabricated concrete composite pipe column is solved.

Description

Technical Field

[0001] The invention relates to a beam-column node connection technology on a full-height column, and in particular to a precast concrete composite pipe column ring beam node connection structure. Background Art

[0002] With the country's vigorous promotion of industrialized construction, the relevant technologies of prefabricated buildings have developed rapidly. According to the stress characteristics of the columns in the building structure, the prefabricated concrete columns in the prefabricated buildings need to adopt different cross-sections and reinforcements according to the magnitude of the stress, which makes it difficult to standardize the prefabricated concrete columns. At present, the market mostly adopts prefabricated concrete solid columns corresponding to a single project and uses steel bars to connect them on site. This results in the current domestic use of reinforced concrete prefabricated columns. The form is relatively single, the comprehensive cost is high, and the grouting sleeve construction technology has high technical requirements for construction personnel, and is easy to cause grouting, grouting is not dense, and the strength of the grouting material is not enough to detect and verify.

[0003] Patents with application numbers CN201910949568.0, CN202021491927.7, CN202022428953.1 and other patents propose a new type of connection node structure between precast concrete composite pipe columns and beams. The precast concrete composite pipe columns are made of precast concrete outer pipes as external precast pipes. After the precast concrete outer pipes are transported to the construction site, a steel cage is inserted into the core area of ​​the pipe and a cast-in-place concrete column core is poured. The connection nodes with the beams are located between the upper precast concrete composite pipe columns and the lower precast concrete composite pipe columns. The longitudinal bars are inserted between the upper and lower pipe columns at the connection nodes. The use of precast concrete composite pipe columns can realize standardized production of precast concrete outer pipes in factories and lightweight construction on site on the premise of meeting the structural force requirements, thereby saving construction costs and having great application prospects and market value.

[0004] However, current projects often involve situations such as full-height floors, large openings around beam-column joints, or no floor slabs. In these situations, the precast concrete composite pipe columns used are usually full-height columns. Full-height columns refer to precast concrete composite pipe columns that directly penetrate the floors, that is, they cross floors. Precast concrete composite pipe columns also need to be connected with beam structures at the penetrated floors. Therefore, how to connect the beam structure between the penetrated floors with the precast concrete composite pipe columns is an urgent problem to be solved in the development of prefabricated building technology. Summary of the invention

[0005] The purpose of the present invention is to provide a precast concrete composite pipe column ring beam node connection structure, which solves the connection problem of beam-column nodes at full height or half floor in prefabricated buildings using precast concrete composite pipe columns.

[0006] The purpose of the present invention is achieved through the following technical solutions: A precast concrete composite pipe column ring beam node connection structure, the precast concrete composite pipe column comprises a precast concrete outer pipe, a column core steel cage inserted into the middle of the precast concrete outer pipe and a cast-in-place concrete column core cast in the middle of the precast concrete outer pipe, characterized in that: the precast concrete composite pipe column is a cross-layer full-height column, the ring beam node connection structure is located between the floors penetrated by the precast concrete composite pipe column, the ring beam node connection structure comprises shear reinforcement and a cast-in-place ring beam, the cast-in-place ring beam is cast on-site around the outer wall of the precast concrete outer pipe, a ring beam steel cage is arranged inside the cast-in-place ring beam, the shear reinforcement surrounds and is fixed on the outer wall of the precast concrete outer pipe, the shear reinforcement is located between the cast-in-place ring beam and the precast concrete outer pipe, and the precast concrete composite pipe column is connected to the beam structure through the cast-in-place ring beam.

[0007] A further technical solution of the present invention is that the shear reinforcement is annular steel bars, an annular steel plate is embedded in the outer wall of the precast concrete outer tube, the annular shear reinforcement is located outside the annular steel plate and is welded to the annular steel plate.

[0008] A further technical solution of the present invention is that anchor bars are arranged on the inner side of the annular steel plate, and the anchor bars are anchored into the precast concrete outer tube.

[0009] A further technical solution of the present invention is: the shear reinforcement is a spiral steel wire rope or steel bar, a rough surface is provided on the outer wall of the precast concrete outer tube at a position corresponding to the ring beam node connection structure, and the spiral steel wire rope or steel bar is wound around the outer wall of the precast concrete outer tube with the rough surface.

[0010] A further technical solution of the present invention is: the ring beam reinforcement cage includes ring beam surface reinforcement, ring beam waist reinforcement, ring beam bottom reinforcement and ring beam stirrups, the ring beam surface reinforcement and the ring beam bottom reinforcement are respectively arranged at positions close to the top and bottom of the cast-in-place ring beam, the ring beam waist reinforcement is arranged between the ring beam surface reinforcement and the ring beam bottom reinforcement, and the ring beam stirrups connect the ring beam surface reinforcement, the ring beam waist reinforcement and the ring beam bottom reinforcement.

[0011] A further technical solution of the present invention is: the beam structure includes a frame beam and a floor slab located above the frame beam, the frame beam is a cast-in-place beam or a composite beam, the floor slab is a cast-in-place floor slab or a composite floor slab, part of the beam reinforcement skeleton of the frame beam is buried in the cast-in-place ring beam and the cast-in-place floor slab or the cast-in-place layer of the composite floor slab, and the cast-in-place ring beam is cast on-site together with the frame beam and the cast-in-place part of the floor slab on-site.

[0012] In some projects, there are situations where the beam structure has no floor slab. In this case, part of the beam reinforcement skeleton of the frame beam will extend from the end face and be buried in the cast-in-place ring beam. The cast-in-place ring beam and the cast-in-place part of the frame beam are still cast together on site.

[0013] A further technical solution of the present invention is: the beam reinforcement skeleton includes frame beam bottom reinforcement, frame beam surface reinforcement and frame beam stirrups, the frame beam bottom reinforcement is arranged near the bottom of the frame beam, the frame beam surface reinforcement is located in the cast-in-place layer of the cast-in-place floor slab or the composite floor slab, the ends of the frame beam bottom reinforcement and the frame beam surface reinforcement extend into the cast-in-place ring beam, the frame beam stirrups connect the frame beam bottom reinforcement and the frame beam surface reinforcement, and the upper ends of the frame beam stirrups are located in the cast-in-place layer of the cast-in-place floor slab or the composite floor slab.

[0014] A further technical solution of the present invention is: the beam structure comprises a crane beam, a supporting steel plate is pre-buried on the cast-in-place ring beam, the crane beam is supported on the supporting steel plate, and the lower end of the crane beam is fixedly connected to the supporting steel plate.

[0015] A further technical solution of the present invention is: a sleeve steel plate is fixed on the outer wall of the precast concrete outer tube, and the upper end of the crane beam is fixedly connected to the sleeve steel plate through a connecting piece.

[0016] A further technical solution of the present invention is: the precast concrete outer tube is a hollow tube with a circular or square shape, and the precast concrete outer tube is made of ordinary concrete, high-strength concrete or ultra-high performance concrete (UHPC).

[0017] A further technical solution of the present invention is: an outer tube steel bar cage is arranged in the precast concrete outer tube, and the longitudinal bars of the outer tube steel bar cage have two structural forms: extended bars and non-extended bars. The structural form of extended bars is: during precasting, the ends of the longitudinal bars of the outer tube steel bar cage are extended from the end face of the precast concrete outer tube and reserved, and during on-site pouring, the ends of the longitudinal bars of the outer tube steel bar cage are buried in the floor nodes; the structural form of non-extended bars is that the ends of the longitudinal bars of the outer tube steel bar cage do not extend outside the precast concrete outer tube.

[0018] A further technical solution of the present invention is that the inner hole shape of the precast concrete outer tube can be circular, square, regular polygonal or the like.

[0019] A further technical solution of the present invention is that the outer shape of the cast-in-place ring beam is circular, square, regular polygonal or the like.

[0020] Compared with the prior art, the present invention has the following beneficial effects: The present invention is designed for high columns in prefabricated buildings using precast concrete composite pipe columns. The beam structure is connected to the precast concrete outer tube of the precast concrete composite pipe column by combining a cast-in-place ring beam with shear reinforcement. The shear reinforcement is fixed on the outer wall of the precast concrete outer tube, which can resist shear force, thereby achieving a safe and reliable connection between the beam and the precast concrete composite pipe column. At the same time, the ring beam node of the present invention does not need to be provided with connecting steel bars passing through the precast concrete composite pipe column or connected to the steel bars in the precast concrete composite pipe column. The connection position is more flexible, and the on-site construction operation of the beam-column node connection is further simplified, thereby improving the efficiency of on-site installation construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 1 is a schematic diagram of a top view of a ring beam node connection structure according to a first embodiment of the present invention; Figure 2 yes Figure 1 Schematic diagram of the cross section at AA in the middle; Figure 3 This is a schematic diagram of the structure in which the shear reinforcement is fixed to the precast concrete outer tube according to the first embodiment of the present invention; Figure 4 It is a structural schematic diagram of the ring beam node connection structure of the first embodiment of the present invention when it is applied to a two-story full-height column; Figure 5 is a structural schematic diagram of a ring beam node connection structure according to a second embodiment of the present invention; Figure 6 It is a structural schematic diagram of the ring beam node connection structure of the third embodiment of the present invention connecting the crane beam; Figure 7 Schematic diagram of reinforcement at the cast-in-place ring beam of the ring beam node connection structure of the third embodiment of the present invention; Figure 8 It is a structural schematic diagram of the ring beam node connection structure of the fourth embodiment of the present invention connecting the crane beam; Fig. 9 1 is a schematic structural diagram of a ring beam node connection structure according to a fifth embodiment of the present invention; Fig.10 is a structural schematic diagram of a ring beam node connection structure according to a sixth embodiment of the present invention; Fig.11 1 is a schematic structural diagram of a ring beam node connection structure according to a seventh embodiment of the present invention; Fig.12 is a structural schematic diagram of a ring beam node connection structure according to an eighth embodiment of the present invention; Fig.13 It is a structural schematic diagram of the ring beam node connection structure of the ninth embodiment of the present invention.

[0022] Meaning of reference numerals in the figure: 100-precast concrete composite pipe column; 101-precast concrete outer pipe; 102-cast-in-situ concrete column core; 103-column core steel cage; 104-node steel cage; 105-longitudinal reinforcement extension of outer pipe steel cage; 106-seat mortar layer; 107-rough surface; 108-floor node; 109-upward steel cage; 200-cast-in-situ ring beam; 300-ring beam steel cage; 301-ring beam surface reinforcement; 3 02-ring beam waist reinforcement; 303-ring beam bottom reinforcement; 304-ring beam stirrups; 400-beam reinforcement skeleton; 401-frame beam bottom reinforcement; 402-frame beam stirrups; 403-frame beam surface reinforcement; 500-shear reinforcement; 600-cast-in-place floor slab; 700-annular steel plate; 701-anchor reinforcement; 800-crane beam; 801-supporting steel plate; 802-hoop steel plate; 803-connector; 900-frame beam. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with embodiments.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Embodiment 1: The ring beam node connection structure of this embodiment is used on the precast concrete composite pipe column 100 as a full-height column, and the ring beam node connection structure will be located between the floors through which the precast concrete composite pipe column 100 passes. Figure 4As shown, the precast concrete composite pipe column 100 runs through the upper and lower floors, the upper and lower ends of the precast concrete composite pipe column 100 are respectively connected to the top surface of the upper floor and the ground of the lower floor, and the ring beam node connection structure connects the beam structure of the mezzanine between the upper and lower floors with the precast concrete composite pipe column 100.

[0028] like Figures 1 to 4 As shown, the precast concrete composite pipe column 100 is composed of a precast concrete outer tube 101, a column core steel bar cage 103 inserted into the middle of the precast concrete outer tube 101, and a cast-in-place concrete column core 102 cast in the middle of the precast concrete outer tube 101. The precast concrete outer tube 101 is provided with an outer tube steel bar cage, and the longitudinal bars of the outer tube steel bar cage have two structural forms: protruding bars and not protruding bars. The structural form of protruding bars is that the ends of the longitudinal bars of the outer tube steel bar cage are extended from the end face of the precast concrete outer tube 101 during prefabrication and reserved. During on-site casting, the longitudinal bars protruding part 105 of the outer tube steel bar cage will be buried in the floor node 108. The structural form of not protruding bars is that the ends of the longitudinal bars of the outer tube steel bar cage do not extend out of the precast concrete outer tube 101.

[0029] like Figure 4 As shown, the longitudinal reinforcement of the outer tube steel cage adopted in this embodiment is a protruding reinforcement structure, and the protruding part 105 of the longitudinal reinforcement of the outer tube steel cage will be buried in the floor node 108. A node steel cage 104 is arranged in the floor node 108, and a mortar layer 106 is arranged between the lower end surface of the precast concrete outer tube 101 and the floor node 108 below.

[0030] The ring beam node connection structure includes shear reinforcement 500 and cast-in-place ring beam 200. The shear reinforcement 500 of this embodiment is a ring-shaped steel bar, and multiple bars are provided. Annular steel plates 700 are respectively embedded in the outer wall of the precast concrete outer tube 101 at the positions corresponding to the shear reinforcement 500. Anchor bars 701 are provided on the inner side of the annular steel plates 700. The anchor bars 701 are anchored in the precast concrete outer tube 101. The annular steel plates 700 can be more stably fixed to the outer wall of the precast concrete outer tube 101 through the anchor bars 701. The annular shear reinforcement 500 is located on the outer side of the annular steel plate 700 and is welded to the annular steel plate 700, so as to fix the shear reinforcement 500 to the outer wall of the precast concrete outer tube 101.

[0031] The cast-in-place ring beam 200 is cast on site around the outer wall of the precast concrete outer tube 101 . The shear reinforcement 500 is located between the cast-in-place ring beam 200 and the precast concrete outer tube 101 . The shear reinforcement 500 plays a role in resisting shear force.

[0032] A ring beam reinforcement cage 300 is provided inside the cast-in-place ring beam 200, and the ring beam reinforcement cage 300 includes a ring beam surface reinforcement 301, a ring beam waist reinforcement 302, a ring beam bottom reinforcement 303 and a ring beam stirrup 304. The ring beam surface reinforcement 301 and the ring beam bottom reinforcement 303 are respectively arranged at positions close to the top and bottom of the cast-in-place ring beam 200, the ring beam waist reinforcement 302 is arranged between the ring beam surface reinforcement 301 and the ring beam bottom reinforcement 303, and the ring beam stirrup 304 connects the ring beam surface reinforcement 301, the ring beam waist reinforcement 302 and the ring beam bottom reinforcement 303.

[0033] The precast concrete composite pipe column 100 is connected to the beam structure through the above-mentioned cast-in-place ring beam 200. The beam structure of this embodiment includes a frame beam 900 and a cast-in-place floor slab 600 located on the frame beam 900. Part of the beam reinforcement skeleton 400 of the frame beam 900 is embedded in the cast-in-place ring beam 200 and the cast-in-place floor slab 600 for connection. During construction, the cast-in-place ring beam 200 and the cast-in-place floor slab 600 are cast on site together.

[0034] The beam reinforcement skeleton 400 includes a frame beam bottom reinforcement 401, a frame beam surface reinforcement 403 and a frame beam stirrup 402. The frame beam bottom reinforcement 401 is arranged near the position below the frame beam 900, and the frame beam surface reinforcement 403 is cast in the cast-in-place floor 600. The ends of the frame beam bottom reinforcement 401 and the frame beam surface reinforcement 403 extend into the cast-in-place ring beam 200 and are cast together with the cast-in-place ring beam 200. The frame beam stirrup 402 connects the frame beam bottom reinforcement 401 and the frame beam surface reinforcement 403, and the upper end of the frame beam stirrup 402 is located in the cast-in-place floor 600.

[0035] The construction method of the precast concrete composite pipe column ring beam node connection structure of this embodiment is as follows: S1. Prefabricated concrete outer tube 101 and frame beam 900 are prepared in a factory. An annular steel plate 700 is embedded and fixed on the outer wall of the prefabricated concrete outer tube 101. Frame beam bottom reinforcement 401 and frame beam stirrups 402 are embedded in the frame beam 900. The upper end of the frame beam stirrup 402 passes through the upper side of the frame beam 900. S2. In the floor node 108 below the installation position of the precast concrete composite pipe column 100, there is a steel cage 109 that passes upward. The steel cage 109 that passes upward is the upper end of the column core steel cage 103 of the precast concrete composite pipe column 100 of the lower layer, that is, the upper end of the column core steel cage 103 of the precast concrete composite pipe column 100 of the lower layer passes upward through the floor node 108 and extends to the current layer. The steel cage 109 that passes upward must meet the required length. Then, after laying the mortar layer 106 at the floor elevation column position, the precast concrete outer tube 101 is installed in place. The steel cage 109 that passes upward will penetrate into the lower end of the precast concrete outer tube 101, and penetrate into the column core steel cage 103 in the middle of the precast concrete outer tube 101. The lower end of the column core steel cage 103 is connected to the steel cage 109 that passes upward, and the upper end of the column core steel cage 103 will pass through the upper floor node 108 in the same way. S3, welding the annular shear reinforcement 500 to the annular steel plate 700 accordingly, thereby fixing the shear reinforcement 500 to the outer wall of the precast concrete outer tube 101; S4, tying and fixing the ring beam reinforcement cage 300 around the precast concrete outer tube 101; S5, install the frame beam 900 in place, tie and fix the frame beam surface reinforcement 403 on the top of the frame beam 900, and the ends of the frame beam bottom reinforcement 401 and the frame beam surface reinforcement 403 extend into the ring beam reinforcement cage 300 and are tied and fixed with the ring beam reinforcement cage 300; S6, installing the formwork of the cast-in-place ring beam 200 and the cast-in-place floor slab 600; S7, pouring the cast-in-place concrete column core 102, the cast-in-place ring beam 200 and the cast-in-place floor slab 600.

[0036] In the above construction method, the welding and fixing of the shear reinforcement 500 can also be completed in the factory, but more accurate position data is required.

[0037] Embodiment 2:

[0038] The precast concrete composite pipe column ring beam node connection structure of the second embodiment is different from that of the first embodiment in the shear reinforcement 500 and its fixing structure.

[0039] like Figure 5 As shown, the shear reinforcement 500 used in the beam-column node contact surface of the second embodiment is a spiral steel wire rope, and the shear resistance of the contact surface is increased by winding the spiral steel wire rope. A rough surface 107 is provided on the outer wall of the precast concrete outer tube 101 at a position corresponding to the ring beam node connection structure. The rough surface 107 can be chiseled out on the outer wall of the precast concrete outer tube 101 by conventional tools on site or in the factory. The spiral steel wire rope can be wound on the outer wall of the precast concrete outer tube 101 with the rough surface 107 on site or in the factory, and the shear-resistant steel wire rope is fixed by the cooperation of the rough surface 107 and the spiral structure.

[0040] Embodiment three:

[0041] The precast concrete composite pipe column ring beam node connection structure of the third embodiment is different from that of the first embodiment in the beam structure connected to the precast concrete composite pipe column 100 .

[0042] like Figure 6 and Figure 7 As shown, the beam structure of the third embodiment includes a crane beam 800 , a supporting steel plate 801 is pre-buried on the cast-in-place ring beam 200 , the crane beam 800 is supported on the supporting steel plate 801 , and the lower end of the crane beam 800 is welded and fixed to the supporting steel plate 801 .

[0043] Embodiment 4:

[0044] The fourth embodiment differs from the third embodiment in the fixing structure of the crane beam 800, such as Figure 8 As shown, in the fourth embodiment, a hoop steel plate 802 is fixed on the outer wall of the precast concrete outer tube 101, the hoop steel plate 802 is located above the cast-in-place ring beam 200, and the upper end of the crane beam 800 is fixedly connected to the hoop steel plate 802 through a connector 803. The connector 803 is an L-shaped connecting steel plate, and the two sides of the L-shaped connecting steel plate are respectively welded and fixed to the upper end of the crane beam 800 and the hoop steel plate 802.

[0045] Embodiment five:

[0046] The precast concrete composite pipe column ring beam node connection structure of the fifth embodiment is different from that of the first embodiment in that the outer shape of the cast-in-place ring beam 200 is as follows: Fig. 9 As shown, the outer shape of the cast-in-place ring beam 200 of this embodiment is a regular hexagon.

[0047] Embodiment six:

[0048] The precast concrete composite pipe column ring beam node connection structure of the sixth embodiment is different from that of the first embodiment in the shape structure of the precast concrete outer pipe 101 and the cast-in-place ring beam 200, such as Fig.10 As shown, the outer shape and inner hole shape of the precast concrete outer tube 101 of this embodiment are both regular quadrilaterals, and the outer shape of the cast-in-place ring beam 200 is correspondingly designed to be a regular quadrilateral.

[0049] Embodiment seven: The precast concrete composite pipe column ring beam node connection structure of the seventh embodiment is different from that of the first embodiment in the shape structure of the precast concrete outer pipe 101 and the cast-in-place ring beam 200. Fig.11 As shown, the outer shape of the precast concrete outer tube 101 of this embodiment is a regular quadrilateral, and the inner hole shape is a circle, and the outer shape of the cast-in-place ring beam 200 is correspondingly designed to be a regular quadrilateral.

[0050] Embodiment eight:

[0051] The precast concrete composite pipe column ring beam node connection structure of the eighth embodiment is different from that of the first embodiment in the shape structure of the precast concrete outer pipe 101, such as Fig.12 As shown, the outer shape of the precast concrete outer tube 101 of this embodiment is a regular quadrilateral, and the inner hole shape is a circle, and the outer shape of the cast-in-place ring beam 200 is still designed to be a circle.

[0052] Embodiment nine:

[0053] The precast concrete composite pipe column ring beam node connection structure of the ninth embodiment is different from that of the first embodiment in the shape structure of the precast concrete outer pipe 101, such as Fig.13 As shown, the outer shape and inner hole shape of the precast concrete outer tube 101 of this embodiment are both regular quadrilaterals, and the outer shape of the cast-in-place ring beam 200 is still designed to be circular.

[0054] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. A precast concrete composite pipe column ring beam node connection structure, the precast concrete composite pipe column comprises a precast concrete outer pipe, a column core steel cage inserted into the middle of the precast concrete outer pipe, and a cast-in-place concrete column core cast in the middle of the precast concrete outer pipe, characterized in that: The precast concrete composite pipe column is a full-height column that spans floors. The ring beam node connection structure is located between floors through which the precast concrete composite pipe column passes. The ring beam node connection structure includes shear reinforcement and a cast-in-place ring beam. The cast-in-place ring beam is cast on-site around the outer wall of the precast concrete outer tube. A ring beam steel cage is provided inside the cast-in-place ring beam. The shear reinforcement surrounds and is fixed on the outer wall of the precast concrete outer tube. The shear reinforcement is located between the cast-in-place ring beam and the precast concrete outer tube. The precast concrete composite pipe column is connected to the beam structure via the cast-in-place ring beam.

2. The precast concrete composite pipe column ring beam node connection structure according to claim 1, characterized in that: The shear reinforcement is an annular steel bar. An annular steel plate is pre-embedded on the outer wall of the precast concrete outer tube. The annular shear reinforcement is located outside the annular steel plate and is welded to the annular steel plate.

3. The precast concrete composite pipe column ring beam node connection structure according to claim 2, characterized in that: Anchor bars are arranged on the inner side of the annular steel plate, and the anchor bars are anchored into the precast concrete outer tube.

4. The precast concrete composite pipe column ring beam node connection structure according to claim 1, characterized in that: The shear reinforcement is a spiral steel wire rope or steel bar, and a rough surface is provided on the outer wall of the precast concrete outer tube at a position corresponding to the ring beam node connection structure, and the spiral steel wire rope or steel bar is wound around the outer wall of the precast concrete outer tube with the rough surface.

5. The precast concrete composite pipe column ring beam node connection structure according to claim 1, characterized in that: The ring beam reinforcement cage includes ring beam surface reinforcement, ring beam waist reinforcement, ring beam bottom reinforcement and ring beam stirrups. The ring beam surface reinforcement and the ring beam bottom reinforcement are respectively arranged at positions close to the top and bottom of the cast-in-place ring beam, the ring beam waist reinforcement is arranged between the ring beam surface reinforcement and the ring beam bottom reinforcement, and the ring beam stirrups connect the ring beam surface reinforcement, the ring beam waist reinforcement and the ring beam bottom reinforcement.

6. The precast concrete composite pipe column ring beam node connection structure according to claim 1, characterized in that: The beam structure includes a frame beam and a floor slab located above the frame beam, the frame beam is a cast-in-place beam or a composite beam, the floor slab is a cast-in-place floor slab or a composite floor slab, part of the beam reinforcement skeleton of the frame beam is buried in the cast-in-place ring beam and the cast-in-place layer of the cast-in-place floor slab or the composite floor slab, and the cast-in-place ring beam is cast together with the frame beam and the cast-in-place part of the floor slab on site.

7. The precast concrete composite pipe column ring beam node connection structure according to claim 6, characterized in that: The beam reinforcement skeleton includes frame beam bottom reinforcement, frame beam surface reinforcement and frame beam stirrups. The frame beam bottom reinforcement is arranged near the bottom of the frame beam, the frame beam surface reinforcement is located in the cast-in-place layer of the cast-in-place slab or the composite slab, the ends of the frame beam bottom reinforcement and the frame beam surface reinforcement extend into the cast-in-place ring beam, the frame beam stirrups connect the frame beam bottom reinforcement and the frame beam surface reinforcement, and the upper ends of the frame beam stirrups are located in the cast-in-place layer of the cast-in-place slab or the composite slab.

8. The precast concrete composite pipe column ring beam node connection structure according to claim 1, characterized in that: The beam structure comprises a crane beam, a supporting steel plate is pre-buried on the cast-in-place ring beam, the crane beam is supported on the supporting steel plate, and the lower end of the crane beam is fixedly connected to the supporting steel plate.

9. The precast concrete composite pipe column ring beam node connection structure according to claim 8, characterized in that: A sleeve steel plate is fixed on the outer wall of the precast concrete outer tube, and the upper end of the crane beam is fixedly connected to the sleeve steel plate through a connecting piece.

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