Prefabricated concrete column connecting structure for replacing reinforcing steel bars by butt joint of perforated steel pipes and building
The precast concrete column connection structure, which replaces steel bars with perforated steel pipes, solves the problems of dense steel bars and grouting alignment accuracy in prefabricated column connections, achieving convenient connection and efficient construction, and providing good joint bearing capacity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU ZHIENTE TECHNOLOGY CO LTD
- Filing Date
- 2025-01-23
- Publication Date
- 2026-05-15
AI Technical Summary
The existing prefabricated column connection has problems such as the difficulty of avoiding dense steel bars, the high positioning accuracy of grouting sleeves, and the need to support a large number of support frames, resulting in low construction efficiency and high labor costs.
The precast concrete column connection structure uses perforated steel pipes to replace steel bars. The steel strips are connected by pipes and positioning bolts to form steel strips that replace longitudinal and transverse steel bars, eliminating the need for formwork and supports. Grouting is carried out through the holes to enhance the load-bearing capacity of the connection nodes.
It improved construction efficiency, reduced material and labor costs, ensured the convenience and stability of the connection, and enhanced the load-bearing capacity of the nodes.
Smart Images
Figure CN224244088U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building technology, specifically to a precast concrete column connection structure and building using perforated steel pipes as a substitute for reinforcing bars. 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 prefabricated column connection in the prior art. The purpose is to provide a precast concrete column connection structure and building that uses perforated steel pipe butt joints to replace steel bars. By adopting the corresponding technical means, it has the beneficial effects of replacing steel bar connections, convenient and rapid installation, and eliminating the need for formwork and supports.
[0009] This utility model is achieved through the following technical solution:
[0010] In a first aspect, this utility model provides a precast concrete column connection structure in which a perforated steel pipe is butted together to replace reinforcing bars. It includes a butt joint pipe 1 connected to a column 1 and a butt joint pipe 2 connected to a column 2. The butt joint pipe 1 is provided with a positioning plate 1, and the port of the butt joint pipe 2 is provided with a positioning plate 2. The positioning plate 2 is provided with a positioning bolt connected to the positioning plate 1. The butt joint pipe 1 is provided with a through hole 1, and the butt joint pipe 2 is provided with a through hole 2.
[0011] Furthermore, in this utility model, the aforementioned connecting pipe one with the first through hole and the connecting pipe two with the second through hole cooperate to form a vertical steel strip that replaces the longitudinal reinforcing bar, and the connecting pipe one with the first through hole and the connecting pipe two with the second through hole cooperate to form a transverse steel strip that replaces the transverse stirrup.
[0012] Furthermore, in this utility model, an annular liner is provided between the positioning plate one and the positioning plate two.
[0013] Furthermore, in this utility model, the aforementioned column one is provided with a tapered end that extends into the connecting pipe one.
[0014] 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.
[0015] Furthermore, in this utility model, the first longitudinal rib is staggered from the first through hole, and the second longitudinal rib is staggered from the second through hole.
[0016] Furthermore, in this utility model, the aforementioned connecting pipe two is provided with an upper partition plate, which is connected to the top of the column two.
[0017] Furthermore, in this utility model, the aforementioned connecting pipe 2 is provided with a lower partition plate, and the edge of the lower partition plate is provided with a through hole 3 through which a longitudinal rib 2 passes and connects to the pipe wall of the connecting pipe 2.
[0018] Furthermore, in this utility model, the surfaces of the first and second connecting pipes are uneven.
[0019] Secondly, this utility model also provides a building, which includes a precast concrete column connection structure in which perforated steel pipes are butted together to replace reinforcing bars.
[0020] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0021] This utility model relates to a precast concrete column connection structure and building using perforated steel pipe butt joints to replace reinforcing bars. The first butt joint of column one and the second butt joint of column two are pre-connected by butt joints. After butt jointing, leveling is achieved through positioning bolts, which pre-fixes the columns, preventing them from tipping over. This eliminates the material and labor costs associated with on-site support erection, as well as formwork erection and dismantling. Furthermore, the first butt joint has multiple through holes, and the second butt joint has multiple through holes. These holes allow for grouting, facilitating compaction and reducing the weight of the butt joints, further saving materials. The positioning bolts, used to fix the butt joints after butt jointing, replace traditional steel wire binding, making installation faster and more convenient, significantly improving construction efficiency. The first butt joint with through holes and the second butt joint with through holes form vertical steel strips replacing longitudinal reinforcing bars, and the second butt joint with through holes also 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 A schematic diagram of a precast concrete column connection structure in which square-hole perforated steel pipes are butted together to replace steel bars.
[0024] Figure 2 This is a schematic diagram of the lower partition;
[0025] Figure 3 This is a schematic diagram of positioning plate one;
[0026] Figure 4 A schematic diagram of a precast concrete column connection structure using square-hole perforated steel pipes to replace reinforcing bars in equal-height beam-columns with crossbeams.
[0027] Figure 5 This is a schematic diagram of positioning plate two;
[0028] Figure 6 A schematic diagram of a precast concrete column connection structure using square-hole perforated steel pipes to replace reinforcing bars in beam-columns with crossbeams of unequal height.
[0029] Figure 7 This is a schematic diagram of a precast concrete column connection structure using a perforated steel pipe with a circular hole to replace reinforcing bars in beams and columns with crossbeams of unequal height.
[0030] The markings and corresponding component names in the attached diagram are as follows: 1- Connecting pipe one, 101- Positioning plate one, 102- Through hole one, 2- Connecting pipe two, 201- Positioning plate two, 202- Through hole two, 203- Lower partition plate, 2031- Through hole three, 204- Upper partition plate, 3- Column one, 301- Longitudinal rib one, 302- Conical end, 4- Column two, 401- Longitudinal rib two, 5- Positioning bolt, 6- Annular liner, 7- Crossbeam connecting web. Detailed Implementation
[0031] 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.
[0032] 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 expressly specified and limited, the terms "set," "install," "connect," and "link" 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; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between 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.
[0033] Example 1
[0034] This embodiment 1 provides a precast concrete column connection structure in which perforated steel pipes are butted together to replace reinforcing bars, such as... Figures 1-6 As shown, the specific structure is described below.
[0035] Please refer to Figure 1 As shown, the precast concrete column connection structure of the perforated steel pipe replacing the reinforcing bar in this embodiment 1 mainly includes two parts: butt joint pipe 1 and butt joint pipe 2, which are used to connect the upper column 3 and the lower column 4.
[0036] 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 inner 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.
[0037] Similarly, combined Figure 1 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 inner 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.
[0038] Furthermore, in combination Figure 1 As shown, a positioning plate 101 is installed at the bottom port of connector 1, and a positioning plate 201 is installed at the top port of connector 2. Combined with... Figure 3 As shown, both connecting pipe 1 and connecting pipe 2 are rectangular tubes of the same diameter. Positioning plate 101 and positioning plate 201 are also rectangular plates with an octagonal opening at the center. Mounting holes are made at the four corners of positioning plate 101 and positioning plate 201. After connecting pipe 1 and connecting pipe 2 are connected to each other, positioning plate 101 and positioning plate 201 are vertically aligned.
[0039] Combination Figure 1 and Figure 3 As shown, an annular liner 6 is installed between positioning plate 101 and positioning plate 201, with the annular liner 6 placed between them. Then, four positioning bolts 5 pass through the four corners of positioning plate 101 and positioning plate 201. Finally, tightening the positioning bolts 5 connects and levels the connecting pipe 1 and column 3. Through the mutual restraint between connecting pipe 2 and connecting pipe 1, the assembled column 3 eliminates the need for on-site support construction, saving on material and labor costs.
[0040] Use positioning bolts 5 to connect and position the upper positioning plate 101 and the lower positioning plate 201. After adjusting the verticality, tighten the positioning bolts 5 to fix them. Then, weld the connecting pipe 1 and the connecting pipe 2 together. Finally, pour concrete at the connection node.
[0041] The precast concrete column connection structure with perforated steel pipe butt joint replacing steel reinforcement is installed on the beam column with unequal height. Inside the butt joint pipe 2, there is an upper partition 204 and a lower partition 203. The upper partition 204 is located above the lower partition 203, and the bottom of the upper partition 204 is connected to the top of the column 2 4.
[0042] Furthermore, in combination Figure 2 As shown, the lower partition 203 has the same number of through holes 2031 as the longitudinal reinforcement 401. The longitudinal reinforcement 401 passes through the through holes 2031. The lower partition 203 does not affect the connection between the longitudinal reinforcement 401 and the connecting pipe 2.
[0043] When connecting web plate 7 without crossbeams, combined with Figure 1 As shown, the shape of positioning plate 201 and Figure 3 Similar to positioning plate 101, it features a large octagonal opening in the center to save material. However, for connections with crossbeams and web plates 7, where higher support strength is required, positioning plate 201 has a different shape. Figure 5 As shown, a small circular opening is made in the middle. Figure 4 and Figure 6 As shown, positioning plate 201 can be used to indirectly connect the upper flange of the beam connecting web 7, enhancing the node stiffness of the column-beam connection. The beam connecting web 7 is made of I-beam steel, and the ends of the beam are connected to the beam connecting web 7. The beam connecting web 7 and the side wall of connecting pipe 2 are connected by a connecting plate. The connection method can be welding or bolting. Figure 4 In the case of equal-height beams, the connection position between the upper flange plate at the top of the web 7 and the connecting pipe 2 is flush with the positioning plate 201, and the connection position between the lower flange plate at the bottom of the web 7 and the connecting pipe 2 is flush with the upper partition plate 204. Figure 6 In the case of unequal beams, the upper flange plate at the top of the crossbeam connecting web 7 is also at the same level as the connection position of the connecting pipe 2 and the positioning plate 201, and the lower flange plate at the bottom of the crossbeam connecting web 7 is at the same level as the connection position of the connecting pipe 2 and the upper partition 204.
[0044] It should be noted that a large circular hole is provided in the center of the upper partition 204 and the lower partition 203 (it can also be provided in other non-central locations) to facilitate the casting of the column 2 4 itself. Furthermore, when the column 2 4 is prefabricated before leaving the factory, the concrete is poured up to the lower surface of the upper partition 204 to ensure that the column 2 4 and the connecting pipe 2 2 have sufficient rigidity after forming a whole to meet the usage requirements.
[0045] To ensure better adhesion between connector 1 and connector 2 and the poured concrete, the surfaces of connector 1 and connector 2 are designed with an uneven surface, increasing the contact area and thus improving adhesion. It should be noted that this uneven surface can be achieved through sandblasting.
[0046] In some implementations of this embodiment, combined with Figure 1 As shown, three vertical through holes 102 are provided on one side panel of connector pipe 1, and nine square through holes 202 arranged in a matrix are provided on one side panel of connector pipe 2. The positions of through holes 102 and through holes 202 are vertically aligned.
[0047] 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.
[0048] 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.
[0049] 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.
[0050] Furthermore, when the cross-sections of columns 1-3 and 2-4 have three longitudinal reinforcing bars (301 and 401) on one side, two rows of through holes (102 and 202) are opened on one side of the butt joint connectors 1-1 and 2-2. When the cross-sections of columns 1-3 and 2-4 have four longitudinal reinforcing bars (301 and 401) on one side, three rows of through holes (102 and 202) are opened on one side of the butt joint connectors 1-1 and 2-2, for example... Figure 1 and Figure 4 As shown. When the cross-section of column 1 (3) and column 2 (4) has n longitudinal reinforcement 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 plate of the butt joint pipe 1 and butt joint pipe 2.
[0051] In some implementations of this embodiment, combined with Figure 4 As shown, since the outer side of the connecting pipe 2 needs to be connected to the crossbeam and the web plate 7, in order to ensure the connection strength, the through hole 202, which should be located in the middle row, is designed to have twice the number of small holes. The small holes are distributed on the left and right sides of the original position, which has a better connection effect.
[0052] Example 2
[0053] The precast concrete column connection structure of the perforated steel pipe butt joint replacing the steel reinforcement in this embodiment is a further optimized design based on Embodiment 1. The specific structure is described as follows.
[0054] In some embodiments of this example, the openings of through hole one 102 and through hole two 202 can take various forms, for example... Figure 1 , Figure 4 , Figure 6 The square hole form used in the middle, or Figure 7 The circular hole used in the process can also be in various other forms, including but not limited to elliptical holes, elongated holes, and rhomboid holes; the opening positions and number of through holes 102 and 202 are determined by comprehensively considering calculation, construction and connection factors.
[0055] Example 3
[0056] This embodiment provides a building, preferably a prefabricated building. The building in this embodiment is manufactured using any one of the methods in Embodiment 1 and Embodiment 2, or a precast concrete column connection structure in which perforated steel pipes are butted together to replace steel bars.
[0057] The working principle of the precast concrete column connection structure using perforated steel pipe butt joints to replace reinforcing bars, and the building of this utility model, is as follows:
[0058] This utility model pre-connects the connecting pipe 1 of column 3 and the connecting pipe 2 of column 4 by interlocking. After interlocking, the connecting pipe 5 is used for leveling, 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 1 with through holes 102 and connecting pipe 2 with through holes 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.
[0059] In summary, this utility model provides a precast concrete column connection structure for replacing reinforcing bars with butt-jointed perforated steel pipes. It includes a butt joint pipe 1 connected to column 3 and a butt joint pipe 2 connected to column 4. The butt joint pipe 1 is provided with a positioning plate 101, and the end of the butt joint pipe 2 is provided with a positioning plate 201. The positioning plate 201 is provided with a positioning bolt 5 connected to the positioning plate 101. The butt joint pipe 1 has a through hole 102, and the butt joint pipe 2 has a through hole 202. The butt joint pipe 1 with the through hole 102 and the butt joint pipe 2 with the through hole 202 cooperate to form a vertical steel strip replacing longitudinal reinforcing bars, and the butt joint pipe 1 with the through hole 102 and the butt joint pipe 2 with the through hole 202 cooperate to form a horizontal steel strip replacing transverse stirrups. An annular liner 6 is provided between the positioning plate 101 and the positioning plate 201. Column 3 has a tapered end 302 extending into the butt joint pipe 1. The longitudinal reinforcement 301 of column 1-3 is connected to the wall of pipe 1-1, and the longitudinal reinforcement 401 of column 2-4 is connected to the wall of pipe 2-2. The longitudinal reinforcement 301 and through hole 102 are staggered, and the longitudinal reinforcement 401 and through hole 202 are also staggered. Pipe 2-2 is provided with an upper partition 204, which is connected to the top of column 2-4. Pipe 2-2 is provided with a lower partition 203, and the edge of the lower partition 203 has a through hole 2031 through which the longitudinal reinforcement 401 passes and connects to the wall of pipe 2-2. The surfaces of pipe 1-1 and pipe 2-2 are uneven. This utility model also provides a building, which includes a precast concrete column connection structure in which perforated steel pipes are butted together to replace reinforcing bars.
[0060] Therefore, the precast concrete column connection structure and building with perforated steel pipe butt joint to replace steel bars 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.
[0061] 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. A precast concrete column connection structure using perforated steel pipe butt joints to replace reinforcing bars, characterized in that, It includes a connecting pipe 1 (1) connected to column 1 (3) and a connecting pipe 2 (2) connected to column 2 (4). The connecting pipe 1 (1) is provided with a positioning plate 1 (101), and the port of the connecting pipe 2 (2) is provided with a positioning plate 2 (201). The positioning plate 2 (201) is provided with a positioning bolt (5) connected to the positioning plate 1 (101). The connecting pipe 1 (1) is provided with a through hole 1 (102), and the connecting pipe 2 (2) is provided with a through hole 2 (202).
2. The precast concrete column connection structure using perforated steel pipe butt joints to replace reinforcing bars as described in claim 1, characterized in that, The first connecting pipe (1) with the first through hole (102) and the second connecting pipe (2) with the second through hole (202) cooperate to form a vertical steel strip that replaces the longitudinal reinforcement. The first connecting pipe (1) with the first through hole (102) and the second connecting pipe (2) with the second through hole (202) cooperate to form a transverse steel strip that replaces the transverse stirrup.
3. The precast concrete column connection structure using perforated steel pipe butt joints to replace reinforcing bars as described in claim 1, characterized in that, An annular liner (6) is provided between the first positioning plate (101) and the second positioning plate (201).
4. The precast concrete column connection structure using perforated steel pipe butt joints to replace reinforcing bars as described in claim 1, characterized in that, The column 1 (3) is provided with a tapered end (302) that extends into the connecting pipe 1 (1).
5. The precast concrete column connection structure using perforated steel pipe butt joints to replace reinforcing bars as described in claim 1, characterized in that, The longitudinal rib 1 (301) of the first column (3) is connected to the pipe wall of the first connecting pipe (1), and the longitudinal rib 2 (401) of the second column (4) is connected to the pipe wall of the second connecting pipe (2).
6. The precast concrete column connection structure using perforated steel pipe butt joints to replace reinforcing bars as described in claim 5, characterized in that, The first longitudinal rib (301) is staggered with the first through hole (102), and the second longitudinal rib (401) is staggered with the second through hole (202).
7. The precast concrete column connection structure using perforated steel pipe butt joints to replace reinforcing bars as described in claim 1, characterized in that, The connecting pipe 2 (2) is provided with an upper partition (204), which is connected to the top of the column 2 (4).
8. The precast concrete column connection structure using perforated steel pipe butt joints to replace reinforcing bars as described in claim 7, characterized in that, The connecting pipe 2 (2) is provided with a lower partition plate (203), and the edge of the lower partition plate (203) is provided with a longitudinal rib 2 (401) passing through and connecting to the pipe wall of the connecting pipe 2 (2).
9. The precast concrete column connection structure using perforated steel pipe butt joints to replace reinforcing bars as described in claim 1, characterized in that, The surfaces of the first connecting pipe (1) and the second connecting pipe (2) are uneven.
10. A building, characterized in that, This includes a precast concrete column connection structure using perforated steel pipes as a substitute for reinforcing bars, as described in any one of claims 1-9.