Interlayer PC column connecting joint structure and building
By using a butt joint and stud connection structure, combined with the fixing method of ribs and vertical plates, the problems of high difficulty in avoiding dense steel bars and high grouting alignment accuracy in prefabricated column connections are solved, realizing convenient installation and efficient construction, and providing good load-bearing capacity of connection nodes.
Patent Information
- Application Number
- CN202520499662.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Existing prefabricated column connections suffer from problems such as difficulty in avoiding densely packed reinforcing bars, high positioning accuracy of grouting sleeves, and the need to erect a large number of support frames, resulting in low construction efficiency and increased labor costs.
The structure adopts a butt joint and stud connection structure. The butt joint is pre-connected by setting horizontal plates and nuts on it. Combined with the welding or bolting of rib plates and vertical plates, it forms steel strips that replace longitudinal and transverse steel bars, eliminating the need for traditional steel bar binding and supporting formwork. Grouting is carried out using through holes.
It enables convenient installation of column connections, reduces support and formwork costs, improves construction efficiency, and provides good load-bearing capacity of the connection node through the joint bearing and concrete working together.
Smart Images
Figure CN223922383U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building technology, specifically to an inter-story PC column connection node structure and building. Background Technology
[0002] Cast-in-place structures have problems such as long construction cycles, difficulty in ensuring project quality, and difficulty in controlling costs. Prefabricated structures, on the other hand, have certain advantages. Prefabricated structures involve casting concrete into independent precast columns or beams in a factory or other location in advance, and then transporting them to the construction site to assemble them into a building structure. In prefabricated structures, the connection method between precast columns or beams determines the overall stability of the structure.
[0003] The existing prefabricated column structure still has the following problems during assembly:
[0004] (1) When precast beams and columns with outward reinforcing bars meet at beam-column joints, the reinforcing bars are very dense, making it difficult to avoid them, and the concrete in the core area of the joint cannot be vibrated to compact.
[0005] (2) When connecting the upper and lower precast columns, the alignment accuracy of the grouting sleeve is required, and the grouting quality is difficult to guarantee.
[0006] (3) A large number of support frames need to be erected at the beam and column installation site.
[0007] The aforementioned factors lead to low construction efficiency and increased labor costs. Therefore, existing technologies need improvement. Utility Model Content
[0008] The technical problem to be solved by this utility model is that there are many shortcomings in the existing prefabricated column connection technology. The purpose is to provide an inter-story PC column connection node structure and building, which adopts corresponding technical means and has the beneficial effects of replacing steel bar connection, convenient and quick installation, and eliminating the need for formwork and support.
[0009] This utility model is achieved through the following technical solution:
[0010] In a first aspect, this utility model provides an interlayer PC column connection node structure, which includes a connecting pipe 1 connected to a column 1, a connecting pipe 2 connected to a column 2, and a stud. The connecting pipe 1 is provided with a horizontal plate, the horizontal plate is provided with an insertion hole for the stud to pass through, the stud is provided with a nut for clamping the horizontal plate, the connecting pipe 1 is provided with a through hole 1, and the connecting pipe 2 is provided with a through hole 2.
[0011] Furthermore, in this utility model, the first connecting pipe with the first through hole and the second connecting pipe with the second through hole cooperate to form a vertical steel strip that replaces the longitudinal reinforcing bar, and the first connecting pipe with the first through hole and the second connecting pipe with the second through hole cooperate to form a horizontal steel strip that replaces the transverse stirrup.
[0012] Furthermore, in this utility model, the outer side wall of the first connecting pipe is provided with a rib plate, and the outer side wall of the second connecting pipe is provided with a rib plate, the rib plate second being connected to the rib plate first.
[0013] Furthermore, in this utility model, the above also includes a vertical plate, which is welded / bolted to the first rib plate and welded / bolted to the second rib plate.
[0014] Furthermore, in this utility model, the bottom end of the first rib is welded to the top end of the second rib.
[0015] Furthermore, in this utility model, the aforementioned rib plate one extends downward to the outer wall of the connecting pipe two, and the rib plate one is welded and fixed to the outer wall of the connecting pipe two.
[0016] Furthermore, in this utility model, the aforementioned column one is provided with a tapered end that extends into the connecting pipe one.
[0017] Furthermore, in this utility model, the longitudinal rib of the first column is connected to the wall of the first connecting pipe, and the longitudinal rib of the second column is connected to the wall of the second connecting pipe.
[0018] Furthermore, in this utility model, the longitudinal rib one of the first column is staggered with the through hole one, and the longitudinal rib two of the second column is staggered with the through hole two.
[0019] Secondly, this utility model also provides a building that includes the above-mentioned inter-story PC column connection node structure.
[0020] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0021] This utility model's interlayer PC column connection node structure and building utilizes pre-connection of the horizontal plate on the first connecting pipe and the studs and nuts on the second column. Leveling with the nuts pre-fixes the columns, preventing them from tipping over, thus saving on-site support material and labor costs, as well as formwork erection and dismantling costs. Furthermore, the first connecting pipe has multiple through holes, and the second connecting pipe has multiple through holes. These holes allow for easy grouting and compaction, reducing the weight of the connecting pipes and saving materials. The connection of the first and second connecting pipes via butt joints with ribs replaces traditional steel reinforcement binding, making installation faster and more convenient, significantly improving construction efficiency. The first connecting pipe with through holes and the second connecting pipe with through holes form vertical steel strips replacing longitudinal reinforcement, and the second connecting pipe with through holes form horizontal steel strips replacing transverse stirrups. After column one and column two are connected, concrete is poured inside and outside the connecting pipe one and connecting pipe two. After solidification, the connecting pipe one and connecting pipe two, which replace the steel bars, work together with the concrete to provide good load-bearing capacity of the connection node. Attached Figure Description
[0022] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:
[0023] Figure 1 This is a schematic diagram of the interlayer PC column connection node structure of this utility model;
[0024] Figure 2 for Figure 1 Schematic diagram of the cross section of AA;
[0025] Figure 3 for Figure 1 A schematic diagram of the cross-section of BB;
[0026] Figure 4 This is a schematic diagram of the connection between connecting pipe one and connecting pipe two according to this utility model;
[0027] Figure 5 This is a schematic diagram showing the connection of another type of connecting pipe 1 and connecting pipe 2 according to this utility model;
[0028] Figure 6 This is a schematic diagram (four rows of holes) of the first and second connecting pipes of this utility model;
[0029] Figure 7 This is a schematic diagram of the first and second connecting pipes of this utility model (two rows of holes);
[0030] Figure 8This is a schematic diagram (three rows of holes) of the first and second connecting pipes of this utility model.
[0031] The markings and corresponding component names in the attached diagram are as follows: 1-Connecting pipe one, 101-Rib plate one, 102-Through hole one, 2-Connecting pipe two, 201-Rib plate two, 202-Through hole two, 3-Column one, 301-Longitudinal rib one, 302-Conical end, 4-Column two, 401-Longitudinal rib two, 5-Stud, 501-Nut, 6-Horizontal plate, 601-Insertion hole, 7-Vertical plate. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only for explaining the present utility model and are not intended to limit the present utility model. The following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the present utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0033] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0034] Example 1
[0035] This embodiment 1 provides an inter-layer PC column connection node structure, such as Figures 1-3 As shown, the specific structure is described below.
[0036] Please refer to Figure 1 As shown, the inter-floor PC column connection node structure of this embodiment 1 is used for connecting PC columns between floors. It mainly includes two parts: connecting pipe 1 and connecting pipe 2, which are used to connect the upper column 3 and the lower column 4.
[0037] The materials for connecting pipe 1 and connecting pipe 2 can preferably be Q355B grade steel. Connecting pipe 1 and connecting pipe 2 can be welded from four steel plates into a square (or rectangular) tube shape, or manufactured using steel profiles with holes on all four sides, or directly cut from steel profiles into round tube shapes. Combined with... Figure 1 As shown, the top of the connecting pipe 1 extends into the interior of the column 3 and is pre-embedded and fixed. Multiple longitudinal ribs 301 are installed inside the column 3. The lower end of the longitudinal ribs 301 and the outer wall of the connecting pipe 1 are fixed by double-sided welding. After welding, the stability of the connection between the connecting pipe 1 and the column 3 is enhanced.
[0038] Similarly, combined Figure 1 and Figure 2 As shown, the connecting pipe 2 is installed on the top of the column 2 4, and the bottom end of the connecting pipe 2 extends into the interior of the column 2 4 and is fixed by pre-embedding. The longitudinal rib 2 401 inside the column 2 4 is fixed to the outer wall of the connecting pipe 2 by double-sided welding, which ensures the stability of the connection between the connecting pipe 2 and the column 2 4.
[0039] In some implementations of this embodiment, combined with Figure 1 and Figure 3 As shown, four studs 5 are pre-embedded and fixed at the top of column 2 4. The top of the studs 5 extends vertically from the top of column 2 4 and is located on the outside of connecting pipe 2 2. Four horizontal plates 6 are fixedly installed at the bottom of connecting pipe 1. The horizontal plates 6 have insertion holes 601, and the studs 5 pass through the insertion holes 601.
[0040] Furthermore, in combination Figure 1 and Figure 3 As shown, each stud 5 is equipped with two nuts 501, which are distributed on the upper and lower sides of the horizontal plate 6. The upper nut 501 is a fastening nut 501, and the lower nut 501 is a leveling nut 501. The leveling nut 501 has a larger flat plate. The two nuts 501 work together to clamp the horizontal plate 6, which serves to fix and level it, thereby adjusting the verticality of the connection between the first column 3 and the second column 4.
[0041] In some implementations of this embodiment, combined with Figure 1 and Figure 3 As shown, vertical ribs 101 are installed on the outer wall of connector 1, and vertical ribs 201 are installed on the outer wall of connector 2. The number of ribs 201 corresponds to the number of ribs 101, and the top of ribs 201 is aligned with the bottom of ribs 101. A vertical plate 7 is also installed, and the surfaces of the vertical plate 7 are in contact with the aligned surfaces of ribs 101 and ribs 201. The vertical plate 7 can be connected to ribs 101 and ribs 201 by bolts, such as... Figure 1As shown, mounting holes are made on the surfaces of vertical plate 7, rib 101, and rib 201. Bolts are inserted into the mounting holes to fix rib 101 and rib 201, and then fix connecting pipe 1 and connecting pipe 2.
[0042] It should be noted that rib plate 101 and connecting pipe 1 are integrally formed; rib plate 201 and connecting pipe 22 are integrally formed. Furthermore, the vertical rib plate 101, rib plate 201 and vertical longitudinal ribs 301 and 401 are vertically aligned, so that the stress is in the same vertical direction, resulting in a more reasonable structural design and better performance.
[0043] In some implementations of this embodiment, combined with Figure 1 As shown, three rows of through holes 102 are formed on one side panel of connector 1, with two through holes 102 in each row; correspondingly, three rows of through holes 202 are formed on one side panel of connector 2, with two through holes 202 in each row. The through holes 102 and 202 are vertically aligned. The top row of through holes 102 in connector 1 is located inside column 3, and the bottom row of through holes 202 in connector 2 is located inside column 4.
[0044] Combination Figure 1 As shown, the butt joint 1 with through hole 102 and the butt joint 2 with through hole 202 can save material costs. After docking, they can also replace traditional steel bar binding and meet the force and load transmission requirements of axial force, bending moment, and shear force at the connection of column 3 and column 4. The butt joint 1 with through hole 102 and the butt joint 2 with through hole 202 form vertical steel strips that replace longitudinal steel bars, and the butt joint 1 with through hole 102 and the butt joint 2 with through hole 202 form horizontal steel strips that replace transverse stirrups.
[0045] Furthermore, in combination Figure 1 As shown, the bottom end of column 3 is set as a conical end 302, which is prefabricated as an integral part of column 3. The conical end 302 extends into the connecting pipe 1. The conical end 302 can be in the form of a frustum, cone, or pyramid. The slope of the conical end 302 should be considered to facilitate the smooth flow of concrete and its pouring to the top surface. Therefore, in this embodiment, the slope of the conical end 302 is 45° to ensure the pouring quality. During pouring, the top surface of the concrete is not lower than the slope line at the root of the conical end 302, and the top of some through holes 102 is level with the slope line at the root of the conical end 302, further improving the pouring quality.
[0046] Furthermore, the principle for the positions of through hole 102 and through hole 202 is that longitudinal rib 301 is staggered with through hole 102, and longitudinal rib 401 is staggered with through hole 202, in order to meet the requirements of stress stiffness and strength.
[0047] Furthermore, combining 4 and Figure 7 As shown, when the cross-sections of column 1 (3) and column 2 (4) have three longitudinal reinforcing bars (301 and 401) on one side, two vertical rows of through holes (102 and 202) are opened on one side panel of butt joint 1 and butt joint 2. Combined with... Figure 5 and Figure 8 As shown, when the cross-sections of column 1 (3) and column 2 (4) have four longitudinal reinforcing bars (301 and 401) on one side, three rows of vertical through holes (102 and 202) are opened on one side panel of butt joint 1 and butt joint 2. Combined with... Figure 6 As shown, when the cross-sections of columns 1-3 and 2-4 have 5 longitudinal reinforcing bars (1-301 and 2-401) on one side, four rows of vertical through holes (1-102 and 2-202) are opened on one side of the butt joint connectors 1-1 and 2-2. In general, when the cross-sections of columns 1-3 and 2-4 have n longitudinal reinforcing bars (1-301 and 2-401) on one side, n-1 rows of vertically spaced through holes (1-102 and 2-202) are opened on one side of the butt joint connectors 1-1 and 2-2.
[0048] It should be noted that the through hole 102 and through hole 202 can be round holes, or they can be square holes, elliptical holes, elongated holes, etc. The number and position of through hole 102 and through hole 202 should be determined by taking into account calculation, construction and connection factors.
[0049] In some implementations of this embodiment, combined with Figure 1 As shown, to ensure better adhesion between connector 1 and connector 2 and the poured concrete, the surfaces of connector 1 and connector 2 are designed to be uneven, increasing the contact area and thus improving adhesion. It should be noted that this unevenness can be achieved through sandblasting.
[0050] Example 2
[0051] The inter-layer PC column connection node structure in this embodiment is a further optimized design based on Embodiment 1. The specific structure is described below.
[0052] Combination Figure 4 As shown, in this embodiment, the vertical plate 7 is connected to the first rib 101 and the second rib 201 by welding. The surface of the vertical plate 7 is in contact with the surfaces of the first rib 101 and the second rib 201, and then welded in place. The vertical plate 7 is fixedly connected to the first rib 101 and the second rib 201, and then fixedly connected to the first connecting pipe 1 and the second connecting pipe 2.
[0053] Example 3
[0054] The inter-layer PC column connection node structure in this embodiment is a further optimized design based on Embodiment 1. The specific structure is described below.
[0055] In this embodiment, the vertical plate 7 and rib plate 201 of embodiment 1 are omitted, and only rib plate 101 is used for fixed connection. Combined with Figure 5 As shown, the bottom end of the rib plate 101 on the connecting pipe 1 extends beyond the bottom end of the connecting pipe 1. When the connecting pipe 1 and the connecting pipe 2 are connected, the rib plate 101 extends to the outer wall of the connecting pipe 2. Then the rib plate 101 and the outer wall of the connecting pipe 2 are welded together, thereby fixing the connecting pipe 1 and the connecting pipe 2.
[0056] Example 4
[0057] The inter-layer PC column connection node structure in this embodiment is a further optimized design based on Embodiment 1. The specific structure is described below.
[0058] In this embodiment, the vertical plate 7 of embodiment 1 is omitted, and only rib plate one 101 and rib plate two 201 are used for fixed connection. Combined with Figure 6 As shown, the bottom end of rib 101 on the first connecting pipe 1 is aligned with the bottom end of the first connecting pipe 1, and the bottom end of rib 201 on the second connecting pipe 2 is aligned with the bottom end of the second connecting pipe 2. When the first connecting pipe 1 and the second connecting pipe 2 are connected, the first connecting pipe 1 and the second connecting pipe 2 abut against each other, and rib 101 and rib 201 abut against each other, and then they are welded, thereby fixing the connection between the first connecting pipe 1 and the second connecting pipe 2.
[0059] Example 5
[0060] This embodiment provides a building, preferably a prefabricated building. The building in this embodiment adopts any one or more inter-story PC column connection node structures from Embodiment 1, Embodiment 2, Embodiment 3, and Embodiment 4.
[0061] The inter-story PC column connection node structure and building principle of this utility model are as follows:
[0062] The connecting pipe 1 of column 3 and the connecting pipe 2 of column 4 are pre-connected by connecting ribs 101 and 201, and are also connected and leveled by studs 5 and horizontal plates 6, which can pre-fix column 3 and prevent it from tilting. Connecting pipe 1 has multiple through holes 102, and connecting pipe 2 has multiple through holes 202. This allows for grouting through the through holes 102 and 202, and also reduces the weight of connecting pipes 1 and 2, making installation faster and more convenient, and greatly improving construction efficiency. Connecting pipe 1 with through holes 102 and connecting pipe 2 with through holes 202 form vertical steel strips that replace longitudinal reinforcing bars, and connecting pipe 2 with through holes 102 and 202 form horizontal steel strips that replace transverse stirrups. After the first column 3 and the second column 4 are connected, concrete is poured inside and outside the first and second connecting pipes 1 and 2. After solidification, the connecting pipes 1 and 2, which replace the steel bars, work together with the concrete to provide good load-bearing capacity of the connection node.
[0063] In summary, this utility model provides an inter-story PC column connection node structure, which includes a connecting pipe 1 connected to column 3, and a connecting pipe 2 and studs 5 connected to column 4. Connecting pipe 1 has a horizontal plate 6 with a hole 601 for the studs 5 to pass through. The studs 5 have nuts 501 for clamping the horizontal plate 6. Connecting pipe 1 has a through hole 102, and connecting pipe 2 has a through hole 202. Connecting pipe 1 with through hole 102 and connecting pipe 2 with through hole 202 cooperate to form a vertical steel strip replacing longitudinal reinforcing bars, and connecting pipe 1 with through hole 102 and connecting pipe 2 with through hole 202 cooperate to form a horizontal steel strip replacing transverse stirrups. The outer wall of connecting pipe 1 has a rib 101, and the outer wall of connecting pipe 2 has a rib 201, which is connected to rib 101. It also includes a vertical plate 7, which is welded / bolted to rib plate 101 and rib plate 201. The bottom end of rib plate 101 is welded to the top end of rib plate 201. Column 3 is provided with a tapered end 302 extending into connecting pipe 1. The longitudinal rib 301 of column 3 is connected to the wall of connecting pipe 1, and the longitudinal rib 401 of column 4 is connected to the wall of connecting pipe 2. The longitudinal rib 301 of column 3 is staggered with the through hole 102, and the longitudinal rib 401 of column 4 is staggered with the through hole 202. The surfaces of connecting pipe 1 and connecting pipe 2 are uneven. This utility model also provides a building, which includes an inter-story PC column connection node structure.
[0064] Therefore, the inter-story PC column connection node structure and building provided by this utility model have the beneficial effects of replacing steel bar connections, convenient and rapid installation, and eliminating the need for formwork and supports.
[0065] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. An interstory PC column connection node structure, characterized by, The connecting pipe one (1) connected with the column one (3) and the connecting pipe two (2) connected with the column two (4) and the stud (5), the connecting pipe one (1) is provided with a horizontal plate (6), the horizontal plate (6) is provided with a hole (601) for the stud (5) to pass through, the stud (5) is provided with a nut (501) clamping the horizontal plate (6), the connecting pipe one (1) is provided with a through hole one (102), the connecting pipe two (2) is provided with a through hole two (202), The outer side wall of the connecting pipe one (1) is provided with a rib plate one (101), the outer side wall of the connecting pipe two (2) is provided with a rib plate two (201), the rib plate two (201) is connected with the rib plate one (101).
2. The interstory PC column connection node structure according to claim 1, wherein, The connecting pipe one (1) with the through hole one (102) and the connecting pipe two (2) with the through hole two (202) cooperate to form vertical steel strips replacing longitudinal steel bars, and the connecting pipe one (1) with the through hole one (102) and the connecting pipe two (2) with the through hole two (202) cooperate to form horizontal steel strips replacing horizontal stirrups.
3. The interstory PC column connection node structure according to claim 1, wherein, It also includes a vertical plate (7), the vertical plate (7) is welded or bolted with the rib plate one (101), the vertical plate (7) is welded or bolted with the rib plate two (201).
4. The interstory PC column connection node structure of claim 1, wherein, The bottom end of the rib plate one (101) is welded with the top end of the rib plate two (201).
5. The interstory PC column connection node structure according to claim 1, wherein, The rib plate one (101) extends downward to the outer side wall of the connecting pipe two (2), and the rib plate one (101) is welded and fixed with the outer side wall of the connecting pipe two (2).
6. The interstory PC column connection node structure according to claim 1, wherein, The column one (3) is provided with a tapered end (302) extending into the connecting pipe one (1).
7. The interstory PC column connection node structure according to claim 1, wherein, The longitudinal rib one (301) of the column one (3) is connected with the pipe wall of the connecting pipe one (1), and the longitudinal rib two (401) of the column two (4) is connected with the pipe wall of the connecting pipe two (2).
8. The interstory PC column connection node structure according to claim 7, wherein, The longitudinal rib one (301) of the column one (3) is arranged in a staggered manner with the through hole one (102), and the longitudinal rib two (401) of the column two (4) is arranged in a staggered manner with the through hole two (202).
9. A building, characterized in that The interlayer PC column connecting node structure according to any one of claims 1-8.