A wet joint structure for a precast beam
By using a combination of longitudinal and circumferential reinforcing bars in the wet joint structure of precast beams, the problem of slow construction progress caused by welding or binding in existing technologies is solved, achieving efficient wet joint connection and strength improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI WATER CONSERVANCY DEV CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-03
AI Technical Summary
In existing precast beam wet joint structures, the steel reinforcement connection mainly relies on welding or binding, resulting in slow construction progress.
The first and second reinforcing bars are arranged at intervals, with longitudinal reinforcing bars inserted through them, and ring reinforcing bars are set outside the longitudinal reinforcing bars. The longitudinal reinforcing bars and the ring reinforcing bars are connected and fixed to form a reinforcing mesh, avoiding on-site welding or binding.
It simplifies the construction process, improves the structural strength of wet joints, and enhances construction efficiency.
Smart Images
Figure CN224451362U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wet joint technology, and more specifically, to a wet joint structure for precast beams. Background Technology
[0002] Precast beams refer to concrete beams that are prefabricated in a factory and then transported to the construction site for installation. During bridge construction, precast concrete beams are spliced together to form a large-span continuous beam. The joints between adjacent concrete beams need to be connected by cast-in-place concrete to form wet joints, thereby connecting multiple precast beams into a whole.
[0003] In existing technologies, wet joint structures for precast beams mostly use steel reinforcement connections, typically achieved through welding or tying. Welding involves a significant amount of work and can impact construction progress.
[0004] Therefore, it is necessary to propose a wet joint structure for precast beams to at least partially solve the problems existing in the prior art. Utility Model Content
[0005] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.
[0006] To at least partially solve the above problems, this utility model provides a wet joint structure for precast beams, comprising: a plurality of first reinforcing bars spaced apart on the end face of a first precast beam and a plurality of second reinforcing bars spaced apart on the end face of a second precast beam, wherein a first interpenetration area is formed on both the first and second reinforcing bars, and at least two longitudinal reinforcing bars for connecting the plurality of first reinforcing bars or the plurality of second reinforcing bars are provided in the first interpenetration area, and an annular reinforcing bar is provided on the outside of the longitudinal reinforcing bars, wherein the annular reinforcing bar abuts against the longitudinal reinforcing bars.
[0007] Preferably, a second interpenetrating region is formed between two adjacent first reinforcing bars, and a third interpenetrating region is formed between two adjacent second reinforcing bars, with the two ends of the annular reinforcing bar located in the second and third interpenetrating regions respectively in the horizontal direction.
[0008] Preferably, the annular reinforcing bar is sleeved on the outside of all longitudinal reinforcing bars.
[0009] Preferably, both the first and second reinforcing bars include two transverse reinforcing bar units arranged at vertical intervals, with a first intersecting area formed between the two transverse reinforcing bar units.
[0010] Preferably, it also includes: a vertical reinforcing bar unit for connecting two horizontal reinforcing bar units.
[0011] Preferably, the annular reinforcing bar is arranged parallel to the first and second reinforcing bars.
[0012] Preferably, the annular reinforcing bars are arranged at an angle.
[0013] Preferably, the annular reinforcing bar includes two interconnected transverse reinforcing bar segments and two vertical reinforcing bar segments, wherein the vertical reinforcing bar segments abut against the longitudinal reinforcing bars.
[0014] Preferably, the top end of the annular reinforcing bar is higher than the upper transverse reinforcing bar unit, and the bottom end of the annular reinforcing bar is lower than the lower transverse reinforcing bar unit.
[0015] Preferably, one of the two transverse steel bar segments of the annular steel bar has a break.
[0016] Compared with the prior art, the present invention has at least the following beneficial effects:
[0017] The wet joint structure for precast beams described in this utility model only requires connecting the longitudinal steel bars with the first and second steel bars. The annular steel bars can be limited and fixed by the longitudinal steel bars, eliminating the need for welding or binding on the construction site. Furthermore, multiple steel bars can be arranged in the annular steel bars, longitudinal steel bars, first steel bars, and second steel bars in the longitudinal, transverse, and vertical directions to form a steel mesh, thereby improving the structural strength of the wet joint.
[0018] The wet joint structure for precast beams described in this utility model, other advantages, objectives and features of this utility model will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this utility model. Attached Figure Description
[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0020] Figure 1 This is a three-dimensional structural diagram of the wet joint structure for precast beams described in this utility model.
[0021] Figure 2 This is a schematic diagram of the main structure of the wet joint structure for precast beams described in this utility model.
[0022] Figure 3 This is a top view schematic diagram of the wet joint structure for precast beams described in this utility model;
[0023] Figure 4 This is a schematic diagram of the structure of the wet joint structure for precast beams described in this utility model, which uses ring-shaped steel bars with breaks.
[0024] Figure 5 This is a schematic diagram of the arrangement of multiple ring-shaped steel bars with breaks in the wet joint structure for precast beams described in this utility model.
[0025] Figure 6 This is a schematic diagram of the connection between the longitudinal steel bar and the first steel bar in the wet joint structure for precast beams described in this utility model.
[0026] Figure 7 This is a schematic diagram of the structure of the wet joint structure for precast beams described in this utility model, in which a ring-shaped steel bar with a break is sleeved with a longitudinal steel bar.
[0027] Figure 8 This is a schematic diagram showing the connection between the longitudinal reinforcing bar and the second reinforcing bar in the wet joint structure for precast beams described in this utility model.
[0028] Figure 9 This is a three-dimensional structural diagram of the inclined arrangement of the annular reinforcing bars in the wet joint structure for precast beams described in this utility model.
[0029] Figure 10 This is a side sectional view of the inclined arrangement of the annular reinforcing bars in the wet joint structure for precast beams described in this utility model. Detailed Implementation
[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.
[0031] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.
[0032] like Figures 1-2 As shown, this utility model provides a wet joint structure for precast beams, including: a plurality of first reinforcing bars 3 spaced apart on the end face of a first precast beam 1 and a plurality of second reinforcing bars 4 spaced apart on the end face of a second precast beam 2. A first interpenetrating area 5 is formed on both the first reinforcing bars 3 and the second reinforcing bars 4. At least two longitudinal reinforcing bars 6 for connecting the plurality of first reinforcing bars 3 or the plurality of second reinforcing bars 4 are provided in the first interpenetrating area 5. A ring reinforcing bar 7 is provided on the outside of the longitudinal reinforcing bar 6, and the ring reinforcing bar 7 abuts against the longitudinal reinforcing bar 6.
[0033] The first reinforcing bar 3 is embedded in the first precast beam 1 on one side and extends out of the first precast beam 1 on the other side. The second reinforcing bar 4 is embedded in the second precast beam 2 on one side and extends out of the second precast beam 2 on the other side.
[0034] At least two longitudinal reinforcing bars 6 pass through the first penetration area 5 of multiple first reinforcing bars 3, and at least two longitudinal reinforcing bars 6 pass through the first penetration area 5 of multiple second reinforcing bars 4. The longitudinal reinforcing bars 6 are connected to the first reinforcing bars 3 and the second reinforcing bars 4 by welding or binding.
[0035] Furthermore, the annular reinforcing bar 7 is sleeved on the outside of all the longitudinal reinforcing bars 6.
[0036] The ring-shaped reinforcing bar 7 is placed outside the longitudinal reinforcing bars 6. For example, if there are four longitudinal reinforcing bars 6, the ring-shaped reinforcing bar 7 is placed outside the four longitudinal reinforcing bars 6. The longitudinal reinforcing bars 6 and the ring-shaped reinforcing bar 7 abut against each other, so that the longitudinal reinforcing bars 6 exert an outward force on the ring-shaped reinforcing bar 7, thereby fixing the ring-shaped reinforcing bar 7. When connecting, the longitudinal reinforcing bars 6 and the ring-shaped reinforcing bars 7 can be interlaced first. Then, the longitudinal reinforcing bars 6 in the first reinforcing bar 3 are fixed to the first reinforcing bar 3. Then, the longitudinal reinforcing bars 6 in the second reinforcing bar 4 are pulled away from the first reinforcing bar 3, so that the longitudinal reinforcing bars 6 exert an outward force on the ring-shaped reinforcing bar 7, while fixing the second reinforcing bar 4 to the longitudinal reinforcing bars 6. After fixing, concrete is poured in place within the formed reinforcing mesh to form a wet joint structure.
[0037] With the above structural design, it is only necessary to connect the longitudinal steel bar 6 with the first steel bar 3 and the second steel bar 4. The ring steel bar 7 can be fixed by the longitudinal steel bar 6 without welding or binding on the construction site. Furthermore, the ring steel bar 7, the longitudinal steel bar 6, the first steel bar 3 and the second steel bar 4 can be arranged with multiple steel bars in the longitudinal, transverse and vertical directions to form a steel mesh, thereby improving the structural strength of the wet joint.
[0038] like Figure 2 and Figure 3 As shown, in one embodiment, a second interpenetrating region 8 is formed between two adjacent first reinforcing bars 3, and a third interpenetrating region 9 is formed between two adjacent second reinforcing bars 4. The two ends of the annular reinforcing bar 7 in the horizontal direction are located in the second interpenetrating region 8 and the third interpenetrating region 9, respectively.
[0039] At least one-third of the length of one end of the ring-shaped reinforcing bar 7 in the horizontal direction is located in the second intersecting area 8, and at least one-third of the length of the other end of the ring-shaped reinforcing bar 7 in the horizontal direction is located in the third intersecting area 9. The longitudinal reinforcing bar 6 is set through the first intersecting area 5 and the ring-shaped reinforcing bar 7.
[0040] like Figure 6As shown, in one embodiment, the first reinforcing bar 3 and the second reinforcing bar 4 each include two horizontal reinforcing bar units 10 arranged vertically at intervals, and a first intersecting area 5 is formed between the two horizontal reinforcing bar units 10.
[0041] One end of the transverse steel reinforcement unit 10 is embedded in the first precast beam 1 or the second precast beam 2, and the other end extends out of the first precast beam 1 or the second precast beam 2. The longitudinal steel reinforcement 6 is connected to the inner side of the transverse steel reinforcement unit 10. The inner side of the transverse steel reinforcement unit 10 refers to the side on which the two transverse steel reinforcement units 10 are arranged opposite each other.
[0042] like Figure 6 As shown, in one embodiment, it further includes a vertical reinforcing bar unit 11 for connecting the two horizontal reinforcing bar units 10.
[0043] In addition to the two horizontal steel reinforcement units 10, vertical steel reinforcement units 11 can also be set, forming a U-shape to increase the structural strength of the wet joint.
[0044] The arrangement of the ring reinforcement 7 shall include at least the following two methods:
[0045] like Figures 1-3 The first arrangement is shown, in which the annular steel bar 7 is set parallel to the first steel bar 3 and the second steel bar 4.
[0046] The ring-shaped reinforcing bar 7 is parallel to the first reinforcing bar 3 and the second reinforcing bar 4, and is inserted into the second interpenetration area 8 and the third interpenetration area 9.
[0047] like Figures 9-10 The second arrangement is shown, in which the annular steel bar 7 is set at an angle.
[0048] like Figure 8 As shown, the annular reinforcing bar 7 further includes two interconnected transverse reinforcing bar segments 701 and two vertical reinforcing bar segments 702, wherein the vertical reinforcing bar segments 702 abut against the longitudinal reinforcing bar 6.
[0049] When the ring reinforcement 7 adopts the first arrangement method, such as Figure 1 As shown, the vertical steel bar segment 702 is set perpendicular to the longitudinal steel bar 6.
[0050] When the ring reinforcement 7 adopts the second arrangement method, such as Figure 10 As shown, the vertical reinforcing bar segment 702 is inclined, forming an angle with the longitudinal reinforcing bar 6;
[0051] The included angle ranges from 10 degrees to 60 degrees.
[0052] like Figure 2 , Figure 8 and Figure 10As shown, in one embodiment, the top end of the annular reinforcing bar 7 is higher than the upper transverse reinforcing bar unit 10, and the bottom end of the annular reinforcing bar 7 is lower than the lower transverse reinforcing bar unit 10.
[0053] The dimensions of the ring reinforcement 7 should meet the above arrangement in order to facilitate the connection between the longitudinal reinforcement 6 and the first reinforcement 3 and the second reinforcement 4, so as to avoid the dimensions of the ring reinforcement 7 restricting the connection of the longitudinal reinforcement 6.
[0054] like Figures 4-8 As shown, in one embodiment, one of the two transverse steel bar segments 701 of the annular steel bar 7 has a break 703.
[0055] To further improve on-site construction efficiency, a break 703 can be set on one of the transverse steel bar segments 701 of the ring steel bar 7;
[0056] like Figure 6 As shown, when fabricating the first precast beam 1, longitudinal reinforcing bars 6 can be pre-welded or tied to the first reinforcing bar 3 on one end face; then during construction, as... Figure 7 As shown, when the first precast beam 1 and the second precast beam 2 are spliced together, multiple ring-shaped reinforcing bars 7 can be first inserted through their cuts 703 onto the longitudinal reinforcing bars 6 inside the first reinforcing bar 3; as Figure 8 As shown, the longitudinal steel bar 6 is then passed through the first interpenetration area 5 of the second steel bar 4 and multiple ring steel bars 7, and pulled away from the first steel bar 3. The longitudinal steel bar 6 is then connected to the second steel bar 4. In this way, during construction, only the second steel bar 4 needs to be connected to the longitudinal steel bar 6. The connection between the first steel bar 3 and the longitudinal steel bar 6 can be completed during the fabrication of the precast beam, saving on-site construction time and improving construction efficiency.
[0057] The arrangement of the annular reinforcing bar 7 with the break 703 with the first reinforcing bar 3 and the second reinforcing bar 4 also includes two types: the annular reinforcing bar 7 is parallel to the first reinforcing bar 3 and the second reinforcing bar 4, or the annular reinforcing bar 7 is inclined.
[0058] Multiple ring-shaped reinforcing bars 7 with fracture surfaces 703 can be used as follows Figure 4 and Figure 5 The two arrangements shown are such that the breaks 703 of two adjacent ring steel bars 7 are in the same direction or opposite directions;
[0059] For example Figure 4 As shown, the cuts 703 of all the ring-shaped reinforcing bars 7 are either on the top or on the bottom;
[0060] For example Figure 5 As shown, the fracture 703 of two adjacent ring steel bars 7 is located at the top and the other at the bottom.
[0061] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0063] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by this utility model, this utility model is not limited to the specific details and the illustrations shown and described herein.
Claims
1. A wet joint structure for precast beams, characterized in that, include: Multiple first reinforcing bars (3) are spaced apart on the end face of the first precast beam (1) and multiple second reinforcing bars (4) are spaced apart on the end face of the second precast beam (2). A first intersecting area (5) is formed on both the first reinforcing bars (3) and the second reinforcing bars (4). At least two longitudinal reinforcing bars (6) for connecting multiple first reinforcing bars (3) or multiple second reinforcing bars (4) are provided in the first intersecting area (5). A ring reinforcing bar (7) is provided on the outside of the longitudinal reinforcing bar (6). The ring reinforcing bar (7) abuts against the longitudinal reinforcing bar (6).
2. The wet joint structure for precast beams according to claim 1, characterized in that, A second interpenetrating area (8) is formed between two adjacent first reinforcing bars (3), and a third interpenetrating area (9) is formed between two adjacent second reinforcing bars (4). The two ends of the ring reinforcing bar (7) in the horizontal direction are located in the second interpenetrating area (8) and the third interpenetrating area (9), respectively.
3. The wet joint structure for precast beams according to claim 1, characterized in that, The ring-shaped steel bar (7) is sleeved on the outside of all the longitudinal steel bars (6).
4. The wet joint structure for precast beams according to claim 1, characterized in that, The first reinforcing bar (3) and the second reinforcing bar (4) each include two transverse reinforcing bar units (10) arranged at intervals, and a first intersecting area (5) is formed between the two transverse reinforcing bar units (10).
5. The wet joint structure for precast beams according to claim 4, characterized in that, Also includes: Vertical reinforcement unit (11) used to connect two horizontal reinforcement units (10).
6. The wet joint structure for precast beams according to claim 1, characterized in that, The annular steel bar (7) is set parallel to the first steel bar (3) and the second steel bar (4).
7. The wet joint structure for precast beams according to claim 1, characterized in that, The ring-shaped steel bar (7) is set at an angle.
8. The wet joint structure for precast beams according to claim 1, characterized in that, The ring-shaped reinforcing bar (7) includes two transverse reinforcing bar segments (701) and two vertical reinforcing bar segments (702) connected to each other, and the vertical reinforcing bar segments (702) abut against the longitudinal reinforcing bar (6).
9. The wet joint structure for precast beams according to claim 4, characterized in that, The top of the ring-shaped reinforcing bar (7) is higher than the upper transverse reinforcing bar unit (10), and the bottom of the ring-shaped reinforcing bar (7) is lower than the lower transverse reinforcing bar unit (10).
10. The wet joint structure for precast beams according to claim 8, characterized in that, Of the two transverse steel bar segments (701) of the ring steel bar (7), one of the transverse steel bar segments (701) has a break (703).