Double-ring lap joint wetland seam structure
Through the double-ring overlap wet joint structure, the design of prefabricated beam slabs and wet joint body, combined with the combination of extended steel bars and annular steel bars, the problem of welding inconvenient in the construction of the existing wet joint structure is solved, and the effect of simplifying the process, shortening the construction time and improving the construction quality is achieved.
Patent Information
- Application Number
- CN202421399540.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The existing wet joint structures have problems such as inconvenient welding, slow construction speed and low welding quality during construction.
The double-ring overlap wet joint structure is adopted. Through the design of prefabricated beam slabs and wet joint body, the combination of extended steel bars and annular steel bars is used to form a double-ring overlap connection, avoiding the welding process.
The construction process is simplified, the construction time is significantly shortened, the construction quality is improved, the use cost of steel bars is reduced, and the crack resistance and durability of the wet joint body is enhanced.
Smart Images
Figure CN222666527U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wet joint structures, in particular to a double-ring overlapped wet joint structure. Background Art
[0002] With the continuous acceleration of the current highway driving speed, the smoothness of the road surface and the driving comfort are receiving more and more widespread attention and urgent needs. Therefore, when designing highway bridges, it is necessary to pay attention to the structural problems of the connection between beam sections. The connection between the concrete slab beams in highway concrete bridges usually adopts the form of cast-in-place concrete wet joints. Wet joint concrete is the main structural part of the highway bridge deck system and bears heavy bridge deck traffic loads. The service life of wet joint concrete has a huge impact on the normal operation of the bridge. If maintenance occurs, the bridge will inevitably be shut down.
[0003] In the process of realizing the utility model, the inventors found that there are at least the following problems in the technology. In the current structure, the connection between the concrete slab beam segments is usually achieved by overlapping and welding the longitudinal steel bars, and then pouring the concrete. This welding method is very inconvenient in on-site construction, and there are problems such as slow construction speed and low welding quality. Utility Model Content
[0004] In order to improve the connection between the concrete slab beam segments in the above-mentioned current structure, longitudinal steel bars are usually overlapped and welded, and then concrete is poured. This welding method is very inconvenient in on-site construction and has problems such as slow construction speed and low welding quality. The utility model provides a double-ring overlap wetland seam structure.
[0005] The utility model provides a double-ring overlapped wetland seam structure, which adopts the following technical solutions:
[0006] A double-ring overlap wetland seam structure comprises two groups of precast beams and slabs, a wet joint body is arranged between the two groups of precast beams and slabs, a plurality of protruding steel bars are embedded on both sides of the two groups of precast beams and slabs, one end of the plurality of protruding steel bars is embedded in the precast beams and slabs, the other end of the plurality of protruding steel bars is arranged in the wet joint body, the bottoms of the plurality of protruding steel bars are correspondingly connected with annular steel bars, the annular steel bars are located at both ends of the wet joint body, and a plurality of longitudinal steel bars are arranged in the wet joint body.
[0007] By adopting the above technical solution, one end of the protruding steel bar is embedded in the prefabricated beam and the other end is placed in the wet joint body to form an anchoring structure. Therefore, there is no need to set up an additional anchoring structure in the wet joint body, which effectively reduces the cost of using steel bars. At the same time, by symmetrically arranging annular steel bars on both sides of the wet joint body, a double-ring overlap is formed. Compared with the traditional method, welding is eliminated. At the same time, the annular steel bars in the wet joint can move longitudinally within a certain range without being tied to the protruding steel bars of the prefabricated beam, which facilitates construction.
[0008] Optionally, wet joint concrete is poured inside the wet joint body, and the wet joint concrete adopts high-performance low-shrinkage or micro-expansion concrete material. The two groups of prefabricated beams and slabs are connected into a whole through adjacent wet joint concrete.
[0009] By adopting the above technical scheme, two adjacent prefabricated beams are connected into a whole through the wet joint body. Therefore, the protruding steel bars on both sides of the wet joint body do not need to be tied or welded, which can simplify the process and facilitate construction. At the same time, by adopting high-performance low-shrinkage or micro-expansion concrete materials, it has good working performance, durability and volume stability, and also has micro-expansion characteristics, which ensures the casting quality of the wet joint body and improves the crack resistance and durability of the wet joint body.
[0010] Optionally, a plurality of the annular steel bars are symmetrically distributed about the center of the wet joint body.
[0011] By adopting the above technical solution, a double-loop overlap can be formed.
[0012] Optionally, the width of the wet seam body is greater than 45 cm.
[0013] By adopting the above technical solution, the workload of cast-in-place pouring is greatly reduced, and the quality of wet joint construction can be better controlled.
[0014] Optionally, the outer side of the longitudinal steel bars is connected to the inner side of the annular steel bars, through steel bars are inserted between adjacent annular steel bars along the horizontal direction of the wet joint body, the inner side of the through steel bars is connected to the outer side of the longitudinal steel bars, and the single-sided lap length of the protruding steel bars and the annular steel bars is not less than 20 cm.
[0015] By adopting the above technical solution, double-ring lap connection is adopted to avoid welding, thereby saving construction time. At the same time, the annular steel bars in the wet joint body can move longitudinally within a certain range without being tied with the protruding steel bars, which facilitates construction.
[0016] Optionally, the protruding steel bars on the front and rear sides of the wet joint body do not contact each other.
[0017] By adopting the above technical solution, the structure of the protruding steel bars and the structure of the wet joint body are optimized, and the problem of poor concrete pouring quality in the wet joint body due to dense protruding steel bars is avoided as much as possible.
[0018] In summary, the present invention has at least one of the following beneficial effects:
[0019] By symmetrically distributing the annular steel bars on both sides of the wet joint body and making the annular steel bars fit and connect the longitudinal steel bars and the protruding steel bars, a double-ring lap connection is achieved. The welding construction process of the traditional wet joint reserved steel bars is not required, which can significantly shorten the on-site construction time. At the same time, one end of the protruding steel bar is embedded in the prefabricated beam and the other end is placed in the wet joint body to form an anchor structure. Therefore, there is no need to set up an additional anchor structure in the wet joint body, which effectively reduces the cost of using steel bars, increases the anchor bearing capacity by the local squeezing effect on the concrete, reduces the construction workload on the bridge site while ensuring the stress performance of the wet joint body, and helps to ensure the construction quality of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0022] Figure 2 It is a schematic diagram of the top structure of the utility model.
[0023] In the figure: 1. Precast beams and slabs; 2. Longitudinal reinforcement; 3. Protruding reinforcement; 4. Circular reinforcement; 5. Wet joint body; 6. Through reinforcement. DETAILED DESCRIPTION
[0024] The following is combined with Figure 1-2 The utility model is described in further detail.
[0025] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2The utility model provides an embodiment: a double-ring overlap wetland joint structure, including two groups of prefabricated beams and slabs 1, a wet joint body 5 is arranged between the two groups of prefabricated beams and slabs 1, and wet joint concrete is poured inside the wet joint body 5. The wet joint concrete adopts high-performance low-shrinkage or micro-expansion concrete materials, and the two groups of prefabricated beams and slabs 1 are connected as a whole through adjacent wet joint concrete. Two adjacent prefabricated beams and slabs 1 are connected as a whole through the wet joint body 5, so the protruding steel bars 3 on both sides of the wet joint body 5 do not need to be tied or welded, which can simplify the process and facilitate construction. At the same time, by adopting high-performance low-shrinkage or micro-expansion concrete materials, it has good working performance, durability and volume stability, and also has micro-expansion characteristics, which ensures the casting quality of the wet joint body 5 and improves the crack resistance and durability of the wet joint body 5. The width of the wet joint body 5 is more than 45 cm. It greatly reduces the workload of cast-in-place pouring and can better control the construction quality of the wet joint.
[0026] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 A plurality of protruding steel bars 3 are embedded on both sides of the two sets of precast beams 1, and the protruding steel bars 3 on the front and rear sides of the wet joint body 5 do not contact each other. Thus, the structure of the protruding steel bars 3 and the structure of the wet joint body 5 are optimized, and the problem of poor concrete pouring quality in the wet joint body 5 caused by dense protruding steel bars 3 is avoided as much as possible.
[0027] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 One end of several protruding steel bars 3 is embedded in the precast beam 1, and the other end of several protruding steel bars 3 is arranged in the wet joint body 5. The bottom of several protruding steel bars 3 is connected with annular steel bars 4, which are located at both ends of the wet joint body 5. Several annular steel bars 4 are symmetrically distributed about the center of the wet joint body 5. Thus, a double ring lap joint can be formed.
[0028] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 A plurality of longitudinal steel bars 2 are arranged inside the wet joint body 5, and the outer side of the longitudinal steel bars 2 is connected to the inner side of the annular steel bars 4. A through steel bar 6 is inserted between adjacent annular steel bars 4 along the horizontal direction of the wet joint body 5, and the inner side of the through steel bar 6 is connected to the outer side of the longitudinal steel bars 2. The single-side lap length of the extended steel bars 3 and the annular steel bars 4 is not less than 20 cm. The double-ring lap connection is adopted to avoid welding, thereby saving construction time. At the same time, the annular steel bars 4 in the wet joint body 5 can move longitudinally within a certain range without being tied with the extended steel bars 3, which is convenient for construction.
[0029] Working principle: The longitudinal steel bars 2 are pre-tied to the precast beam 1. After the erection is completed, the longitudinal steel bars 2 in the wet joint body 5 are spread. There is no need for the welding construction process of the traditional wet joint reserved steel bars, which can significantly shorten the on-site construction time and save labor costs. At the same time, one end of the protruding steel bar 3 is pre-buried in the precast beam 1 and the other end is placed in the wet joint body 5 to form an anchoring structure. Therefore, there is no need to set up an additional anchoring structure in the wet joint body 5, which effectively reduces the cost of using steel bars. While ensuring the stress performance of the wet joint body 5, the construction workload on the bridge site is reduced, which helps to ensure the construction quality of the bridge. At the same time, annular steel bars 4 are symmetrically arranged at both ends of the wet joint body 5, and the annular steel bars 4 are respectively connected to the longitudinal steel bars 2 and the protruding steel bars 3 to form a double-ring lap connection. There is no need for the welding construction process of the traditional wet joint reserved steel bars, which can significantly shorten the on-site construction time, and with the cooperation of the through steel bars 6, the construction quality of the bridge is further improved.
[0030] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A double-ring overlapped wetland seam structure, comprising two sets of prefabricated beams and slabs (1), characterized in that: A wet joint body (5) is arranged between the two groups of prefabricated beams (1), and a plurality of protruding steel bars (3) are embedded on both sides of the two groups of prefabricated beams (1), one end of the plurality of protruding steel bars (3) is embedded in the prefabricated beams (1), and the other end of the plurality of protruding steel bars (3) is arranged in the wet joint body (5), and the bottoms of the plurality of protruding steel bars (3) are connected to corresponding annular steel bars (4), and the annular steel bars (4) are located at both ends of the wet joint body (5), and a plurality of longitudinal steel bars (2) are arranged in the wet joint body (5).
2. A double-ring overlapped wetland seam structure according to claim 1, characterized in that: Wet joint concrete is poured inside the wet joint body (5), and the wet joint concrete adopts high-performance low-shrinkage or micro-expansion concrete material. The two groups of prefabricated beams and slabs (1) are connected into a whole through adjacent wet joint concrete.
3. The double-ring overlapped wetland seam structure according to claim 1, characterized in that: The plurality of annular steel bars (4) are symmetrically distributed about the center of the wet joint body (5).
4. The double-ring overlapped wetland seam structure according to claim 1, characterized in that: The width of the wet seam body (5) is greater than 45 cm.
5. The double-ring overlapped wetland seam structure according to claim 1, characterized in that: The outer side of the longitudinal steel bar (2) is connected to the inner side of the annular steel bar (4), and a through steel bar (6) is inserted between adjacent annular steel bars (4) in the horizontal direction of the wet joint body (5), and the inner side of the through steel bar (6) is connected to the outer side of the longitudinal steel bar (2), and the single-side overlap length of the protruding steel bar (3) and the annular steel bar (4) is not less than 20 cm.
6. The double-ring overlapped wetland seam structure according to claim 1, characterized in that: The protruding steel bars (3) on the front and rear sides of the wet joint body (5) do not contact each other.