A new type of connection node for precast concrete components

Abstract

The utility model discloses a novel concrete prefabricated component connection node, including a column end steel connector embedded in the upper end of a lower column, a lower connecting sleeve located at the top surface of the lower column fixedly provided on the column end steel connector, the lower end of the lower connecting sleeve is fixedly connected to the corresponding lower steel bar respectively; the protruding end of the upper steel bar is inserted into the corresponding lower connecting sleeve. A side connecting part is provided on the column end steel connector; a beam end steel connector is embedded in the prefabricated beam, and a bolt connection structure is provided between the beam end steel connector and the side connecting part. The column end steel connector is embedded in the lower column, and the lower connecting sleeve located at the top surface of the lower column is fixed with the column end steel connector as a carrier, so that while forming a stronger overall structure, it is convenient to quickly plug and connect the upper column and the lower column with steel bars, and it is convenient to form a quick bolt connection between the lower column and the prefabricated beam with a steel structure. The overall on-site construction is simple and convenient, the cost is low, the on-site workload is small, it is conducive to shortening the construction period, and the connection is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to a novel prefabricated concrete component connection node. Background Art

[0002] Prefabricated buildings refer to the transfer of a large number of on-site operations in traditional construction methods to factories, where building components and accessories such as prefabricated columns, prefabricated beams, floor slabs, wall panels, etc. are prefabricated in the factory, and then the prefabricated components are transported to the construction site and assembled and installed on site through reliable connection methods. The prefabricated components of prefabricated buildings mainly include prefabricated concrete components and prefabricated steel structure components. Among them, the connection at the assembly node of the concrete structure includes two parts: column-to-column connection and column-to-beam connection. Fig. 22 This node is composed of the upper column and lower column assembly connection node, and the lower column and precast beam assembly connection node.

[0003] Specifically, Figures 22 to 25 As shown, the assembly connection between the upper column and the lower column is to connect the column connection sleeve at the lower end of the column connection steel bar on the upper column, and the column connection steel bar on the lower column extends out of the top surface of the lower column; during installation, first spread bonding mortar on the top surface of the lower column, fill the space between the lower column and the upper column with mortar, align the column connection sleeves at the upper and lower ends of the upper column with the column connection steel bar extending out of the lower column, so that the column connection steel bar is passively inserted into the corresponding column connection sleeve, and then align the plane position of the upper column and the verticality, and then temporarily fix the upper column firmly with steel support; inject bonding mortar into the grouting port at the lower end of each column connection sleeve, and fill the mortar when overflow occurs at the overflow port at the upper end; after the bonding mortar reaches the specified strength, remove the steel support and start connecting the lower column and the precast beam. The side connecting steel bars extending laterally are embedded in the lower column at the connection position with the precast beam, and the end of the side connecting steel bars is first inserted into the side connecting sleeve; the side connecting steel bars extending from the end are also embedded in the precast beam. When the precast beam is assembled, a temporary support is first erected under the precast beam, and the precast beam is aligned with the column-beam connection position, and the side connecting steel bars on it are aligned with the side connecting sleeve; the precast beam is fixed in position on the temporary support, and the side connecting sleeve is passed through the side connecting steel bars on the precast beam, and then grouting is injected from the grouting port of the side connecting sleeve to fill the side connecting sleeve with structural adhesive to realize the connection of the side connecting steel bars between the precast beam and the lower column; finally, stirrups are tied at the column-beam connection position, and concrete is poured to realize the strong connection of concrete equal to that between the precast beam and the lower column.

[0004] The above existing connection technologies have the following shortcomings. First, in the connection between the upper column and the lower column, the protruding end of the column connection steel bar is at the bottom, and the insertion port of the column connection sleeve is at the top. It is impossible to observe whether the steel bar and the sleeve are aligned during installation, and as long as one of the steel bars is not aligned, it cannot be installed, which causes great difficulties for the installation work. Second, all column connection sleeves need to be grouted separately, the grouting work is cumbersome, the workload is large, and the grouting quality is difficult to guarantee, which in turn affects the reliability of the connection structure. Third, in the connection between the lower column and the prefabricated beam, a large number of temporary supports need to be erected on the prefabricated beam, the workload on site is large, and because the support elevation position requires precision, the on-site construction is difficult, the technical requirements are high, the cost is high, and there are safety hazards in on-site construction. Fourth, in the connection between the lower column and the prefabricated beam, the side connection steel bar on the lower column needs to extend a sufficient length to achieve connection with the side connection sleeve, so as to ensure the seismic performance of the beam end, but this will result in the need to reserve a larger size for the connection part, increase the on-site construction volume, and increase the construction cost. Fifth, the temporary support erected can only be removed after the post-cast concrete at the connection position reaches the design strength, which greatly prolongs the installation construction period. Therefore, it is necessary to improve the connection nodes of precast concrete components to improve the above situation. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a new type of concrete prefabricated component connection node which is simple and convenient for on-site construction, has a small on-site workload, is conducive to shortening the construction period, and has reliable connection.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a new type of concrete precast component connection node, at least used for connecting an upper column and a lower column, wherein a lower steel bar is pre-embedded in the lower column, and an upper steel bar corresponding to the lower steel bar is pre-embedded in the upper column, comprising a column end steel connector pre-embedded at the upper end of the lower column, a lower connecting sleeve located at the top surface of the lower column is fixedly provided on the column end steel connector, the lower connecting sleeve corresponds to the lower steel bar one-to-one, and the lower end of the lower connecting sleeve is fixedly connected to the corresponding lower steel bar respectively; the column end steel connector is provided with a through hole corresponding to the lower connecting sleeve or the lower steel bar respectively; the upper steel bar extends out of the bottom surface of the upper column, and the extended end of the upper steel bar is inserted into the corresponding lower connecting sleeve.

[0007] As a preferred technical solution, the column end steel connector includes at least two transverse connecting plates arranged in the up-and-down direction.

[0008] As a preferred technical solution, the column end steel connector further includes vertical connecting plates located at each side surface of the lower column, and the transverse connecting plates are respectively welded to the vertical connecting plates on each side.

[0009] As a preferred technical solution, tie steel bars are welded between the vertical connecting plates.

[0010] As a preferred technical solution, a vertical connecting web is welded between two adjacent transverse connecting plates.

[0011] As a preferred technical solution, it is also used for connecting the lower column and the prefabricated beam. The column end steel connecting piece is provided with a side connecting portion exposed at the side of the lower column and used for connecting with the corresponding side prefabricated beam; the prefabricated beam is pre-embedded with a beam end steel connecting piece, and a bolt connection structure is provided between the beam end steel connecting piece and the side connecting portion.

[0012] As a preferred technical solution, the bolt connection structure includes a column end connecting ear plate fixedly arranged on the side connection part and vertically arranged; the beam end steel connecting piece is provided with a beam end connecting ear plate extending out of the end of the prefabricated beam, and the beam end connecting ear plate is bolted to the column end connecting ear plate; the prefabricated beam is respectively pre-embedded with bending-resistant steel bars on the upper and lower sides of the beam end steel connecting piece, the bending-resistant steel bars extend out of the end of the prefabricated beam, and bending-resistant connection structures are respectively provided between the protruding ends of the upper and lower sides of the bending-resistant steel bars and the side connection part.

[0013] As a preferred technical solution, the anti-bending connection structure includes side connection steel plates fixedly welded to the upper and lower anti-bending steel bars respectively, and the side connection steel plates are respectively welded to the corresponding side connection parts.

[0014] As a preferred technical solution, the anti-bending connection structure includes steel anchor blocks threadedly connected to the anti-bending steel bars on the upper and lower sides, respectively, and the steel anchor blocks are fixedly connected to the side connection parts on the corresponding sides.

[0015] As a preferred technical solution, the bolt connection structure includes a column end connection frame fixedly welded on the side connection part, and a column end connection end plate is fixedly welded to the end of the column end connection frame; the beam end steel connection piece is provided with a beam end connection frame extending out of the end of the prefabricated beam, and a beam end connection end plate is fixedly welded to the end of the beam end connection frame, and the beam end connection end plate is bolted to the column end connection end plate.

[0016] Due to the adoption of the above technical scheme, the utility model pre-buries the column end steel connector in the lower column, and the lower connecting sleeve located at the top surface of the lower column is fixed on the column end steel connector. When installing the upper column, the lower connecting sleeve is pre-filled with structural glue, and bonding mortar is laid on the top surface of the lower column. When the lower end of the upper steel bar on the upper column is inserted into the lower connecting sleeve filled with structural glue, it is easy to observe whether the upper steel bar is aligned with the lower connecting sleeve, which is convenient for adjustment and realizes the quick insertion of the upper steel bar into the lower connecting sleeve. The construction is simple and convenient, the on-site workload is small, and it is conducive to shortening the construction period. After insertion, the plane position and verticality of the upper column are adjusted, and the upper column is temporarily fixed with a steel support. After the structural glue solidifies to the specified strength, the connection between the upper column and the lower column is completed. The lower connecting sleeve relies on the threaded connection with the lower steel bar and the glue mortar fixed connection with the upper steel bar, so that the connection between the steel bars is reliable, which is conducive to ensuring the connection quality. The pre-embedding of the column end steel connector facilitates the quick bolt connection between the lower column and the prefabricated beam with the steel structure, which also makes the on-site construction simple and convenient, reduces the on-site workload, helps to shorten the construction period, and provides reliable connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0018] Figure 1 This is a structural principle diagram of the first embodiment of the utility model;

[0019] Figure 2 yes Figure 1 Schematic diagram of AA structure;

[0020] Figure 3 yes Figure 2 An enlarged structural diagram of the steel connector at the center column end;

[0021] Figure 4 yes Figure 1 A schematic diagram of the enlarged structure at the middle and lower columns;

[0022] Figure 5 yes Figure 1 A magnified structural diagram of the precast beam in the middle;

[0023] Figure 6 This is a structural principle diagram of the second embodiment of the utility model;

[0024] Figure 7 yes Figure 6 Schematic diagram of BB structure;

[0025] Figure 8 This is a structural principle diagram of the third embodiment of the utility model;

[0026] Fig. 9yes Figure 8 Schematic diagram of CC structure;

[0027] Fig.10 This is a structural principle diagram of the fourth embodiment of the utility model;

[0028] Fig.11 yes Fig.10 Schematic diagram of DD structure;

[0029] Fig.12 This is a structural principle diagram of a fifth embodiment of the utility model in which a steel anchor block is connected to a bending-resistant steel bar through an internal thread and is indirectly welded to a side connection portion;

[0030] Fig.13 yes Fig.12 A magnified structural diagram of the precast beam in the middle;

[0031] Fig.14 This is a structural principle diagram of a fifth embodiment of the utility model in which a steel anchor block is externally threadedly connected to a bending-resistant steel bar and indirectly welded to a side connection portion;

[0032] Fig.15 yes Fig.14 A magnified structural diagram of the precast beam in the middle;

[0033] Fig.16 This is a structural principle diagram of a fifth embodiment of the utility model in which a steel anchor block is connected to a bending-resistant steel bar through an internal thread and is directly welded to a side connection portion;

[0034] Fig.17 yes Fig.16 A magnified structural diagram of the precast beam in the middle;

[0035] Fig.18 This is a structural principle diagram of a fifth embodiment of the utility model in which a steel anchor block is externally threadedly connected to a bending-resistant steel bar and bolted to a side connecting portion;

[0036] Fig.19 yes Fig.18 A magnified structural diagram of the precast beam in the middle;

[0037] Fig. 20 This is a structural principle diagram of the sixth embodiment of the utility model;

[0038] Fig.21 yes Fig. 20 An enlarged schematic diagram of one of the bolt connection structures;

[0039] Fig. 22 It is a structural principle diagram of the connection between the upper column and the lower column, and the lower column and the prefabricated beam in the prior art;

[0040] Fig.23 yes Fig. 22 A schematic diagram of the enlarged structure of the middle and upper columns;

[0041] Fig.24 yes Fig. 22 A schematic diagram of the enlarged structure of the middle and lower columns;

[0042] Fig.25 yes Fig. 22 Schematic diagram of the enlarged structure of the precast beam.

[0043] In the figure: 1-column end steel connector; 11-transverse connecting plate; 12-vertical connecting plate; 13-tie steel bar; 14-side connecting part; 15-vertical connecting web; 16-transverse stirrups; 2-lower connecting sleeve; 3-beam end steel connector; 31-tie bolt; 4-bolt connection structure; 41-column end connecting ear plate; 42-beam end connecting ear plate; 43-column end connecting frame; 44-column end connecting end plate; 45-beam end connecting frame; 46-beam end connecting end plate; 5-bending connection structure; 51-side connecting steel plate; 52-steel anchor block; 81-upper column; 82-upper steel bar; 83-lower column; 84-lower steel bar; 85-precast beam; 86-bending steel bar; 91-column connecting steel bar; 92-column connecting sleeve; 93-side connecting steel bar; 94-side connecting sleeve. DETAILED DESCRIPTION

[0044] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0045] Embodiment 1: Figure 1 As shown, a new type of precast concrete component connection node is at least used for connecting an upper column 81 and a lower column 83. The lower column 83 is pre-embedded with a lower steel bar 84, and the upper column 81 is pre-embedded with an upper steel bar 82 corresponding to the lower steel bar 84. The pre-embedding of the lower steel bar 84 and the upper steel bar 82 is a well-known technology and will not be repeated here.

[0046] like Figure 1 and Figure 4As shown, this connection node includes a column end steel connector 1 embedded in the upper end of the lower column 83, and a lower connecting sleeve 2 located at the top surface of the lower column 83 is fixed on the column end steel connector 1. Of course, the upper end of the lower connecting sleeve 2 is open to facilitate the insertion of the corresponding upper steel bar 82. Thus, the lower connecting sleeve 2 and the column end steel connector 1 together form an integral structure with high strength, which is convenient for connecting the upper column 81 with the lower column 83, and is convenient for bolting with the prefabricated beam 85 using a steel structure. The lower connecting sleeve 2 is fixed on the column end steel connector 1 by welding.

[0047] The lower connecting sleeve 2 corresponds to the lower steel bar 84 one by one, and the lower end of the lower connecting sleeve 2 is fixedly connected to the corresponding lower steel bar 84 respectively; the fixed connection here can use threaded connection or direct welding, etc., and this embodiment is only illustrated by bolt connection. For the lower steel bar 84 that will also pass through the column end steel connector 1, the column end steel connector 1 is provided with a through hole corresponding to the lower steel bar 84, and the through hole can only be penetrated or welded, and there is no restriction here. The upper steel bar 82 extends out of the bottom surface of the upper column 81, and the protruding end of the upper steel bar 82 is inserted into the corresponding lower connecting sleeve 2.

[0048] In this embodiment, the lower connecting sleeve 2 fixedly connected to the column end steel connector 1 is located at the top surface of the lower column 83, and the lower connecting sleeve 2 is pre-fixedly connected to the lower steel bar 84. When installing the upper column 81, the lower connecting sleeve 2 can be cleaned with compressed air first, and then the lower connecting sleeve 2 is filled with structural glue. Only the upper end of the lower connecting sleeve 2 is open, so that the structural glue can be injected in advance before the connection between the columns, and the injection ports are all located at the top surface of the lower column 83, which significantly simplifies the glue injection work and makes it easy to completely fill the structural glue, which is conducive to ensuring the connection quality.

[0049] The bonding mortar is laid on the top surface of the lower column 83 so that the upper column 81 can be fully seated after being seated. When the upper column 81 is installed on the lower column 83, it is easy to observe whether the upper steel bar 82 is aligned with the corresponding lower connecting sleeve 2, which is convenient for adjusting the upper column 81 and realizing the quick insertion of the upper steel bar 82 into the corresponding lower connecting sleeve 2. The construction is simple and convenient, the workload on site is small, and it is conducive to shortening the construction period. After insertion, the plane position and verticality of the upper column 81 are adjusted, and the upper column 81 is temporarily fixed with a steel support. After the structural adhesive solidifies to the specified strength, the connection between the upper column 81 and the lower column 83 is completed. The lower connecting sleeve 2 is fixedly connected with the threaded connection with the lower steel bar 84 and the glue mortar with the upper steel bar 82, so that the connection between the steel bars is reliable, which is conducive to ensuring the connection quality. After that, the steel support can be removed.

[0050] The column end steel connector 1 of this embodiment includes at least two transverse connecting plates 11 arranged in the up-down direction. The transverse connecting plates 11 embedded in the lower column 83 can provide the precast beam 85 with a stronger resistance to horizontal forces after the lower column 83 forms a steel structure connection with the precast beam 85, so as to maintain a stable connection between the precast beam 85 and the lower column 83. The transverse connecting plates 11 can be arranged along the entire cross-section of the lower column 83, or can be arranged with a smaller width only in the connection direction of the relative precast beam 85. The latter is illustrated in this embodiment. Based on this, for the lower column 83 that is usually connected to four precast beams 85, if Figure 2 and Figure 3 As shown, the transverse connecting plate 11 forms a cross shape, and the cross shape can be directly cut from a whole plate, or can be obtained by welding two upper and lower long plates abutting against each other. This embodiment is illustrated by the former.

[0051] Based on the structure of the column end steel connector 1, the lower connecting sleeve 2 in this embodiment is fixedly connected to the upper transverse connecting plate 11. At the fixed connection, the transverse widening, the transverse connecting plate 11 is thickened, or the number of transverse connecting plates 11 is increased according to the force requirements. This is easy to obtain by those skilled in the art in combination with conventional technical means and the description of this embodiment, and will not be repeated here.

[0052] like Figures 1 to 4 As shown, the column end steel connector 1 in this embodiment also includes a vertical connecting plate 12 located at each side of the lower column 83, and the transverse connecting plate 11 is welded to the vertical connecting plates 12 on each side, thereby the column end steel connector 1 is approximately box-shaped, the overall structural strength is further increased, and the resistance to horizontal forces is further enhanced.

[0053] Preferably, tie bars 13 are welded between the vertical connecting plates 12 to form tie anchors between the vertical connecting plates 12 to further improve the structural strength. Of course, transverse stirrups 16 may also be added between the uppermost and lowermost transverse connecting plates 1 to further ensure the overall strength of the lower column 83.

[0054] like Figure 1 , Figure 2 and Figure 5 As shown, in the case where the column end steel connector 1 is provided, this embodiment is also used for connecting the lower column 83 with the precast beam 85. The column end steel connector 1 is provided with a side connection portion 14 exposed at the side of the lower column 83 and used for connecting with the corresponding side precast beam 85. For this embodiment provided with the vertical connection plate 12, the vertical connection plate 12 also serves as the side connection portion 14.

[0055] The prefabricated beam 85 is pre-embedded with a beam end steel connector 3, and a bolt connection structure 4 is provided between the beam end steel connector 3 and the side connection portion 14. The lower column 83 and the prefabricated beam 85 are pre-embedded with a steel connector, so that the two can be easily bolted together. This bolt connection does not require waiting for the structural adhesive to solidify, and is convenient for direct connection after the prefabricated beam is aligned, reducing or even eliminating the need for temporary support erection. The overall construction is simple and convenient, with low cost and small on-site workload, which is conducive to shortening the construction period and reliable connection.

[0056] like Figure 1 , Figure 4 and Figure 5 As shown, the bolt connection structure 4 of this embodiment includes a column end connection ear plate 41 fixedly arranged on the side connection part 14 and arranged vertically; the beam end steel connection member 3 is provided with a beam end connection ear plate 42 extending out of the end of the prefabricated beam 85, and the beam end connection ear plate 42 is bolted to the column end connection ear plate 41. Through the bolt connection between the ear plates, the prefabricated beam 85 is quickly fixed in the installation position, and the shear resistance of the prefabricated beam 85 is guaranteed.

[0057] In this embodiment, an I-beam is embedded in the precast beam 85, and the web of the I-beam extends out of the end of the precast beam 85 to form the beam end connecting ear plate 42. Preferably, tie bolts 31 are welded on the web and flange of the I-beam to enhance the anchoring effect between the beam end steel connector 3 and the precast beam 85.

[0058] like Figure 1 , Figure 2 and Figure 5 As shown, the precast beam 85 is pre-embedded with bending steel bars 86 on the upper and lower sides of the beam end steel connector 3, and the bending steel bars 86 extend out of the end of the precast beam 85, and bending connection structures 5 are respectively provided between the extended ends of the upper and lower bending steel bars 86 and the side connection part 14. Through the upper and lower bending connection, in conjunction with the bolt connection of the column end connection ear plate 41 and the beam end connection ear plate 42, an equal strength connection can be formed between the precast beam 85 and the lower column 83.

[0059] The bending-resistant connection structure 5 of this embodiment includes side connection steel plates 51 fixedly welded to the upper and lower bending-resistant steel bars 86, and the side connection steel plates 51 are respectively welded to the corresponding side connection parts 14. Preferably, the side connection steel plates 51 are arranged at the same height as the transverse connection plates 11 to achieve better force transmission.

[0060] In this embodiment, a column end steel connector 1 is embedded in the lower column 83, and is used as a carrier to fix the lower connecting sleeve 2 located at the top surface of the lower column 83, so as to facilitate the injection of structural adhesive in advance and to facilitate observation of the alignment when installing the upper column 81; and the column end steel connector 1 also facilitates the formation of a quick bolt connection between the lower column 83 and the prefabricated beam 85 with a steel structure, and is easy to further form an equal strength connection. The overall on-site construction is simple and convenient, with low cost and small on-site workload, which is conducive to shortening the construction period and has reliable connection.

[0061] Embodiment 2: Figure 6 and Figure 7 As shown, the difference between this embodiment and embodiment 1 mainly lies in that: three transverse connecting plates 11 are provided in this embodiment, and the interval between the two upper transverse connecting plates 11 is smaller than the interval between the two lower transverse connecting plates 11, so that the lower connecting sleeve 2 and the two upper transverse connecting plates 11 form a fixed connection, the structural strength is higher, and it is more conducive to ensuring equal strength connection and force transmission at the bending-resistant connecting structure 5.

[0062] Embodiment 3: Figure 8 and Fig. 9 As shown, the main difference between this embodiment and the first embodiment is that a vertical connecting web 15 is welded between two adjacent transverse connecting plates 11 to enhance the connection strength between the transverse connecting plates 11. Preferably, the vertical connecting web 15 is welded to the two opposite vertical connecting plates 12 at the same time to further enhance the overall strength of the column end steel connector 1. Thus, the vertical connecting webs 15 can be set to two and form a cross-shaped cross structure together. Of course, the two vertical connecting webs 15 are also welded at the cross position. Tie steel bars 13 can still be added between the opposite vertical connecting plates 12. At the position where the tie steel bars 13 pass through the vertical connecting webs 15, a hole for passing the tie steel bars 13 can be opened on the vertical connecting webs 15 and then welded at the hole, or a shorter tie steel bar 13 can be directly welded between the vertical connecting plates 12 and the vertical connecting webs 15. Of course, the transverse stirrups 16 can also be added within the range between the uppermost and lowermost transverse connecting plates 11. The transverse stirrups 16 can adopt an annular structure, which can be achieved by opening a hole for passing through on the vertical connecting web 15 and welding the hole, or by using four L-shaped steel bars to be welded and fixed between adjacent vertical connecting webs 15 and together form an approximately annular structure.

[0063] Embodiment 4: Fig.10 and Fig.11As shown, the main difference between this embodiment and the third embodiment is that: the vertical connecting plate 12 is not provided in this embodiment, and the side of the transverse connecting plate 11 extends to the side of the lower column 83 and is flush; the vertical connecting web 15 extends out of the side of the lower column 83. The part of the vertical connecting web 15 extending out of the side of the lower column 83 forms the column end connecting ear plate 41, which is used for the direct bolt connection of the beam end connecting ear plate 42. Based on this, the side of the transverse connecting plate 11 in this embodiment forms the side connecting portion 14, which is used for welding connection with the side connecting steel plate 51. This structure also has the advantages of simple and convenient construction and reliable connection. Since the vertical connecting plate 12 no longer exists, only the transverse stirrup 16 can be provided in the range between the uppermost and lowermost transverse connecting plates 11 in this embodiment. Of course, the connection method of the transverse stirrup 16 and the vertical connecting web 15 can still refer to the third embodiment, which will not be repeated here.

[0064] Embodiment 5: Figures 12 to 19 As shown, the difference between this embodiment and the first embodiment mainly lies in that the anti-bending connection structure 5 includes steel anchor blocks 52 which are respectively threadedly connected to the anti-bending steel bars 86 on the upper and lower sides, and the steel anchor blocks 52 are respectively fixedly connected to the side connection parts 14 on the corresponding sides. In this embodiment, the steel anchor blocks 52 are used as intermediate structures, which can improve the flexibility of the fixed connection between the anti-bending steel bars 86 and the side connection parts 14. Specifically, the steel anchor blocks 52 can form a threaded connection with the anti-bending steel bars 86 through internal threads or external threads, and can form a fixed connection with the side connection parts 14 through direct welding, indirect welding with intermediate steel plates, or threaded connection, etc. The accompanying drawings only provide a structural schematic diagram of the above parts, as shown in FIG. Fig.12 and Fig.13 The structure in which the steel anchor block 52 is internally threadedly connected to the bending steel bar 86 and indirectly welded to the side connection part 14 is schematically illustrated. Fig.14 and Fig.15 The structure in which the steel anchor block 52 is externally threadedly connected to the bending steel bar 86 and indirectly welded to the side connection part 14 is schematically illustrated. Fig.16 and Fig.17 The structure in which the steel anchor block 52 is internally threadedly connected to the bending-resistant steel bar 86 and directly welded to the side connection part 14 is schematically illustrated. Fig.18 and Fig.19 The structure in which the steel anchor block 52 is externally threadedly connected to the bending steel bar 86 and bolted to the side connection part 14 is illustrated. Based on this, those skilled in the art can obtain that the connection between the steel anchor block 52 and the bending steel bar 86 and the side connection part 14 can have more matching modes as above, and these matching modes form equivalent technical means changes, which should all be within the protection scope of the present utility model.

[0065] Example 6: Fig. 20 and Fig.21 As shown, the main difference between this embodiment and the first embodiment is that: the bolt connection structure 4 includes a column end connection frame 43 fixedly welded on the side connection part 14, and the end of the column end connection frame 43 is fixedly welded with a column end connection end plate 44; the beam end steel connection member 3 is provided with a beam end connection frame 45 extending out of the end of the precast beam 85, and the end of the beam end connection frame 45 is fixedly welded with a beam end connection end plate 46, and the beam end connection end plate 46 is bolted to the column end connection end plate 44. Through the full bolt connection of the end plate in the surface direction, the precast beam 85 and the lower column 83 can quickly form a fully fixed connection, and its strength does not require additional connection with the bending steel bar 86, and the construction is also simple and convenient, and the connection is also reliable.

[0066] The beam end connection frame 45 can be directly formed by extending the beam end of the I-beam pre-buried in the precast beam 85, and the column end connection frame 43 can be formed by the I-beam welded on the side connection part 14. Preferably, the column end connection end plate 44 and the beam end connection end plate 46 are arranged along an oblique direction gradually away from the lower column 83 from top to bottom. Therefore, for a precast beam 85, a space that is wide at the top and narrow at the bottom is formed between the column end connection end plates 44 that need to be connected at both ends. When the precast beam 85 is installed from top to bottom, a certain installation gap can be formed accordingly, which improves the convenience of installing the precast beam 85. After being installed in place, the beam end connection end plate 46 is aligned with the column end connection end plate 45, and the installation gap tends to be zero, thereby simplifying the on-site construction.

[0067] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, such as the combination of different structures of the column end steel connector and different structures of the column beam connection, etc. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A new type of precast concrete component connection node, at least used for connecting an upper column and a lower column, wherein the lower column is pre-embedded with lower steel bars, and the upper column is pre-embedded with upper steel bars corresponding to the lower steel bars, characterized in that: It includes a column end steel connector embedded in the upper end of the lower column, and a lower connecting sleeve located at the top surface of the lower column is fixedly provided on the column end steel connector. The lower connecting sleeve corresponds to the lower steel bars one by one, and the lower ends of the lower connecting sleeves are fixedly connected to the corresponding lower steel bars respectively; the upper steel bars extend out of the bottom surface of the upper column, and the extended ends of the upper steel bars are inserted into the corresponding lower connecting sleeves.

2. The novel precast concrete component connection node according to claim 1, characterized in that: The column end steel connecting piece includes at least two transverse connecting plates arranged in the up-down direction.

3. The novel precast concrete component connection node according to claim 2 is characterized in that: The column end steel connector also includes vertical connecting plates located at each side of the lower column, and the transverse connecting plates are respectively welded to the vertical connecting plates on each side.

4. The novel precast concrete component connection node according to claim 3 is characterized in that: Tie steel bars are welded between the vertical connecting plates.

5. The novel precast concrete component connection node according to claim 2, characterized in that: A vertical connecting web is welded between two adjacent transverse connecting plates.

6. The novel precast concrete component connection node according to any one of claims 1 to 5, characterized in that: It is also used for connecting the lower column with the prefabricated beam. The column end steel connecting piece is provided with a side connecting part which is exposed at the side of the lower column and is used for connecting with the corresponding side prefabricated beam. The prefabricated beam is pre-embedded with a beam end steel connecting piece, and a bolt connection structure is provided between the beam end steel connecting piece and the side connecting part.

7. The novel precast concrete component connection node according to claim 6, characterized in that: The bolt connection structure includes a column end connection ear plate fixedly arranged on the side connection part and vertically arranged; a beam end connection ear plate extending out of the end of the precast beam is provided on the beam end steel connection piece, and the beam end connection ear plate is bolted to the column end connection ear plate; anti-bending steel bars are respectively embedded on the upper and lower sides of the beam end steel connection piece on the precast beam, and the anti-bending steel bars extend out of the end of the precast beam, and anti-bending connection structures are respectively provided between the protruding ends of the anti-bending steel bars on the upper and lower sides and the side connection part.

8. The novel precast concrete component connection node according to claim 7, characterized in that: The anti-bending connection structure comprises side connection steel plates respectively fixedly welded to the upper and lower anti-bending steel bars, and the side connection steel plates are respectively welded to the corresponding side connection parts.

9. The novel precast concrete component connection node according to claim 7, characterized in that: The anti-bending connection structure comprises steel anchor blocks which are respectively threadedly connected to the anti-bending steel bars on the upper and lower sides, and the steel anchor blocks are respectively fixedly connected to the side connection parts on the corresponding sides.

10. The novel precast concrete component connection node according to claim 6, characterized in that: The bolt connection structure includes a column end connection frame fixedly welded on the side connection part, and a column end connection end plate is fixedly welded to the end of the column end connection frame; a beam end connection frame extending out of the end of the prefabricated beam is provided on the beam end steel connection piece, and a beam end connection end plate is fixedly welded to the end of the beam end connection frame, and the beam end connection end plate is bolted to the column end connection end plate.

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