Sectional cantilever assembled beam temporary connecting structure

Abstract

The utility model belongs to the technical field of bridge construction, and relates to a temporary connecting structure for segmental cantilever assembly beams. Comprising a first section beam (1), a second section beam (2) and a third section beam (3), the second section beam (2) is provided with a diaphragm plate (4), the diaphragm plate (4) is provided with a plurality of sleeves (5), each sleeve (5) is aligned with a first section beam tooth ridge (6) on the first section beam (1) at one end, and the other end of each sleeve (5) is aligned with a third section beam tooth ridge (7) on the third section beam (3). According to the temporary connection structure of the segmental cantilever assembly beam, on the premise that the temporary connection requirement of the segmental cantilever assembly beam is reliably met, the number of the tooth sills is reduced, the number of holes for arranging the tooth sills in the segmental beam is reduced, and the adverse effects caused by a large number of holes and incompact sealing of the holes are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, and more specifically relates to a temporary connection structure of a segment cantilever assembled beam. Background Art

[0002] In the field of bridge construction technology, the temporary prestressing device of the traditional segmental cantilever assembly beam adopts the form of steel tooth ridges + threaded steel. The steel tooth ridges are mostly arranged on the top surface of the segmental beam top plate and the top surface of the bottom plate, and the number is large. Therefore, when the segmental cantilever assembly beam (segmental beam) is prefabricated, a large number of tie rod holes need to be reserved on the top and bottom plates of the segmental beam. Especially in the beam body segment with a steering block arranged in the beam body, more cross partitions need to be arranged than the general beam body segment to achieve temporary fixation between beam segments. After the construction of the segmental beam is completed, the holes need to be sealed with grouting materials, which is easy to cause the holes to be not densely sealed. There are many holes in the beam body, and there are many holes left, and the holes are not densely sealed in the later stage. In rainy weather, it is easy to cause water accumulation in the beam body and water leakage at the bottom plate, affecting the appearance and service life of the bridge.

[0003] The prior art has a technology named "Technology Method for Assembling High-speed Railway Bridge Segments" and a publication number of "CN111778860A". The technology provides a technology method for assembling high-speed railway bridge segments. A large-span bridge-building machine is used to assemble high-speed railway bridge segments. The high-speed railway bridge is divided into multiple sections of prefabricated beams. The technology includes: a pre-setting step: dividing a section of prefabricated beam to be erected into multiple sections according to a predetermined length along the extension direction of the bridge, and prefabricating and constructing multiple section beams of predetermined lengths respectively; a splicing step: on the erected Assemble the long-span bridge-building machine on the completed bridge, drag the long-span bridge-building machine to the precast beam erection position; transport multiple segmental beams to the tail of the long-span bridge-building machine, use the long-span bridge-building machine to hoist the multiple segmental beams to the predetermined position and splice them; fixation step: cast the connection parts of the multiple segmental beams to form a whole section of precast beams, and prestress the whole section of precast beams; for each section of precast beams after this section of precast beams, respectively perform the above-mentioned presetting step, splicing step and fixing step until the erection of the high-speed railway bridge is completed. However, this technology does not involve the technical problems and technical solutions of this application. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in view of the deficiencies in the prior art, a temporary connection structure for segmented cantilever assembled beams is provided which has a simple structure and reduces the number of teeth and the number of holes for arranging the teeth, while reliably meeting the temporary connection requirements for segmented cantilever assembled beams, thereby reducing the adverse effects caused by a large number of holes and loose sealing of the holes.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the utility model is:

[0006] The utility model is a temporary connection structure of a segmented cantilever assembled beam, comprising a first segmented beam, a second segmented beam and a third segmented beam. The second segmented beam is provided with a transverse partition, and a plurality of sleeves are provided on the transverse partition. Each sleeve is aligned with a first segmented beam tooth ridge on one end of the first segmented beam, and the other end of each sleeve is aligned with a third segmented beam tooth ridge on the third segmented beam.

[0007] The threaded steel bar is passed through each casing.

[0008] An anchor pad is fixedly arranged on the side of the diaphragm, a fastening nut is arranged on the anchor pad, and the threaded steel passes through the anchor pad and the fastening nut.

[0009] One end of the threaded steel bar in each casing is connected to a first-segment beam tooth ridge corresponding to the first-segment beam, and the other end of the threaded steel bar in each casing is connected to a third-segment beam tooth ridge corresponding to the third-segment beam.

[0010] The sleeve is a PVC sleeve.

[0011] Anchor pads are fixedly arranged on each side of the transverse partition, and fastening nuts are arranged on the outer side of each anchor pad.

[0012] One side of each threaded steel bar passes through a corresponding anchor plate washer and a corresponding fastening nut, and the other side of each threaded steel bar passes through a corresponding anchor plate washer and a corresponding fastening nut.

[0013] The first segment beam, the second segment beam and the third segment beam are arranged in close proximity.

[0014] A plurality of sleeves are arranged at the same height on the transverse partition with gaps, each sleeve is aligned with a first section beam tooth ridge at the same height on the first section beam, and each sleeve is aligned with a third section beam tooth ridge at the same height on the third section beam.

[0015] The technical solution of the utility model is adopted, and the working principle and beneficial effects are as follows:

[0016] The temporary connection structure of the segmented cantilever assembled beam described in the utility model, in order to meet the temporary connection requirements of the first segment beam, the second segment beam, and the third segment beam, a plurality of sleeves are arranged on the diaphragm located on the second segment beam, each sleeve is aligned with a first segment beam tooth ridge on one end of the first segment beam, and the other end of each sleeve is aligned with a third segment beam tooth ridge on the third segment beam. Threaded steel is respectively set in each sleeve, and one end of the threaded steel in each sleeve is connected to a first segment beam tooth ridge corresponding to the first segment beam, and the other end of the threaded steel in each sleeve is connected to a third segment beam tooth ridge corresponding to the third segment beam. In this way, it is ensured that the threaded steel is connected to the first segment beam and the third segment beam, and the second segment beam no longer needs to be provided with tooth ridges, so that a plurality of tooth ridges can be reduced at each diaphragm position on the second segment beam, so that the second segment beam does not need to reserve holes for providing tooth ridges, thereby reducing the number of holes and reducing the adverse effects caused by the problem of too many holes and the problem of loose sealing of the holes. Furthermore, the temporary connection structure of the utility model can effectively ensure the reliability of the temporary connection without affecting the reliability and safety of the construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a brief description of the contents and symbols in the drawings of this specification:

[0018] Figure 1 It is a structural schematic diagram of the temporary connection structure of the segment cantilever assembled beam described in the utility model;

[0019] The marks in the attached drawings are: 1. first section beam; 2. second section beam; 3. third section beam; 4. cross partition; 5. casing; 6. first section beam tooth ridge; 7. third section beam tooth ridge; 8. threaded steel bar; 9. anchor plate pad; 10. fastening nut. DETAILED DESCRIPTION

[0020] The following is a detailed description of the embodiments of the present invention, such as the shapes, structures, positions and connection relationships of the components involved, the functions and working principles of the components, etc., by referring to the accompanying drawings:

[0021] As attached Figure 1As shown, the utility model is a temporary connection structure of a segmented cantilever assembled beam, including a first segment beam 1, a second segment beam 2, and a third segment beam 3. The second segment beam 2 is provided with a transverse partition 4, and a plurality of sleeves 5 are provided on the transverse partition 4. Each sleeve 5 is aligned with a first segment beam tooth 6 on one end of the first segment beam 1, and the other end of each sleeve 5 is aligned with a third segment beam tooth 7 on the third segment beam 3. The above structure proposes an improved technical solution to address the deficiencies in the prior art. In order to meet the temporary connection requirements of the first segment beam 1, the second segment beam 2, and the third segment beam 3, a plurality of sleeves 5 are provided on the transverse partition 4 located on the second segment beam 2. Each sleeve 5 is aligned with a first segment beam tooth 6 on one end of the first segment beam 1, and the other end of each sleeve 5 is aligned with a third segment beam tooth 7 on the third segment beam 3. A threaded steel bar 8 is respectively installed in each casing 5, and one end of the threaded steel bar 8 in each casing 5 is connected to a first-segment beam tooth 6 corresponding to the first-segment beam 1, and the other end of the threaded steel bar 8 in each casing 5 is connected to a third-segment beam tooth 7 corresponding to the third-segment beam 3. In this way, the threaded steel bar 8 is ensured to be connected to the first-segment beam 1 and the third-segment beam 3, and there is no need to set a tooth on the second-segment beam 2. Therefore, a plurality of teeth can be reduced at each position of the cross partition 4 on the second-segment beam 2. Therefore, there is no need to reserve holes for setting teeth on the second-segment beam 4, which effectively reduces the number of holes and reduces the adverse effects caused by a large number of holes and loose sealing of the holes. Figure 1 The embodiment described is as follows: when the first section beam 1, the second section beam 2, and the third section beam 3 are temporarily connected, the first section beam 1 and the third section beam 3 are respectively provided with toothed ridges, and each cross partition 4 of the second section beam 2 is provided with four threaded steel bars 8. If the prior art is used, four toothed ridges need to be provided on each side of each threaded steel bar 8, and eight toothed ridges are provided on each cross partition 4, that is, eight holes need to be provided. Because each second section beam 2 needs to be provided with multiple cross partitions 4 at the bottom and the top, respectively, each second section beam can reduce the number of holes by a multiple of eight. And the temporary connection structure of the utility model can effectively ensure the reliability of the temporary connection of the first section beam 1, the second section beam 2, and the third section beam 3, and will not affect the reliability and safety of the construction. The temporary connection structure of the segmented cantilever assembled beam described in the utility model has a simple structure. On the premise of reliably meeting the temporary connection requirements of the segmented cantilever assembled beam, it reduces the number of teeth and the number of holes in the segmented beam where the teeth are arranged, thereby reducing the adverse effects caused by a large number of holes and loose sealing of the holes.

[0022] The threaded steel bar 8 is passed through each sleeve 5. An anchor pad 9 is fixedly arranged on the side of the diaphragm 4, and a fastening nut 10 is arranged on the anchor pad 9. The threaded steel bar 8 passes through the anchor pad 9 and the fastening nut 10. In the above structure, the sleeve is used for the threaded steel bar to pass through reliably, and the anchor pad is fixed together with the diaphragm, and the fastening nut is fixedly connected with the anchor pad. Then, the threaded steel bar 8 needs to be screwed through the corresponding fastening nut to realize the reliable connection of the threaded steel bar 8 to the diaphragm 4.

[0023] One end of the threaded steel bar 8 in each sleeve 5 is connected to a first-segment beam tooth 6 corresponding to the first-segment beam 1, and the other end of the threaded steel bar 8 in each sleeve 5 is connected to a third-segment beam tooth 7 corresponding to the third-segment beam 3. In the above structure, the threaded steel bar can reliably realize the connection with the first-segment beam tooth 6 on the first-segment beam 1, and can realize the connection with the third-segment beam tooth 7 corresponding to the third-segment beam 3, and the second-segment beam does not need to be provided with a tooth.

[0024] The sleeve 5 is a PVC sleeve. An anchor pad 9 is fixedly arranged on each side of the diaphragm 4, and a fastening nut 10 is arranged on the outer side of each anchor pad 9. In the above structure, the anchor pad 9 can be arranged on one side of the diaphragm or on both sides, which is selected according to the strength requirement.

[0025] One side of each threaded steel bar 8 passes through a corresponding anchor plate pad 9 and a corresponding fastening nut 10, and the other side of each threaded steel bar 8 passes through a corresponding anchor plate pad 9 and a corresponding fastening nut 10. The first segment beam 1, the second segment beam 2, and the third segment beam 3 are arranged in close contact.

[0026] A plurality of sleeves 5 are arranged at the same height and in intervals on the diaphragm 4, and each sleeve 5 is aligned with a first-segment beam tooth 6 at the same height on the first-segment beam 1, and each sleeve 5 is aligned with a third-segment beam tooth 7 at the same height on the third-segment beam 3. In the above structure, diaphragms are arranged at the top and bottom of the second-segment beam, respectively, and a plurality of sleeves are arranged at each diaphragm, and each sleeve 5 is aligned with a first-segment beam tooth 6 at the same height on the first-segment beam 1, and each sleeve 5 is aligned with a third-segment beam tooth 7 at the same height on the third-segment beam 3. In this way, the first-segment beam 1, the second-segment beam 2, and the third-segment beam 3 are connected at different positions, ensuring that the overall temporary connection is reliably achieved. When the temporary connection needs to be removed, the threaded steel bar 8 is removed, and the holes at the position of the sleeve 5 are sealed with slurry.

[0027] The temporary connection structure of the segmented cantilever assembled beams described in the utility model, in order to meet the temporary connection requirements of the first segment beam 1, the second segment beam 2, and the third segment beam 3, is provided with a plurality of sleeves 5 on the diaphragm 4 located on the second segment beam 2, each sleeve 5 is aligned with a first segment beam tooth ridge 6 on the first segment beam 1 at one end, and the other end of each sleeve 5 is aligned with a third segment beam tooth ridge 7 on the third segment beam 3. A threaded steel bar 8 is respectively set in each sleeve 5, and one end of the threaded steel bar 8 in each sleeve 5 is connected to a corresponding first segment beam tooth ridge 6 on the first segment beam 1, and the other end of the threaded steel bar 8 in each sleeve 5 is connected to a corresponding third segment beam tooth ridge 7 on the third segment beam 3. In this way, the threaded steel bar 8 is connected to the first segment beam 1 and the third segment beam 3, and the second segment beam 2 no longer needs to be provided with a toothed ridge. Therefore, a plurality of toothed ridges can be reduced at each position of the cross partition 4 on the second segment beam 2. Therefore, it is not necessary to reserve holes for providing toothed ridges on the second segment beam 4, which effectively reduces the number of holes and reduces the adverse effects caused by the problem of too many holes and loose hole sealing. Figure 1 The embodiment of the invention is as follows: when the first section beam 1, the second section beam 2, and the third section beam 3 are temporarily connected, the first section beam 1 and the third section beam 3 are respectively provided with toothed ridges, and each cross partition 4 of the second section beam 2 is provided with four threaded steel bars 8. If the existing technology is used, four toothed ridges need to be provided on each side of each threaded steel bar 8, and eight toothed ridges are provided on each cross partition 4, that is, eight holes need to be provided accordingly. Because each second section beam 2 needs to be provided with multiple cross partitions 4 at the bottom and the top respectively, each second section beam can reduce the number of holes by a multiple of eight. And the temporary connection structure of the utility model can effectively ensure the reliability of the temporary connection of the first section beam 1, the second section beam 2, and the third section beam 3, and will not affect the construction reliability.

[0028] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A temporary connection structure of segmental cantilever assembled beams, characterized in that: The invention comprises a first segment beam (1), a second segment beam (2), and a third segment beam (3); the second segment beam (2) is provided with a transverse partition (4); a plurality of sleeves (5) are provided on the transverse partition (4); each sleeve (5) is aligned with a first segment beam tooth (6) on one end of the first segment beam (1); and the other end of each sleeve (5) is aligned with a third segment beam tooth (7) on the third segment beam (3).

2. The segment cantilever assembly beam temporary connection structure according to claim 1 is characterized in that: A threaded steel bar (8) passes through each sleeve (5).

3. The temporary connection structure of segmented cantilever assembled beams according to claim 2 is characterized in that: An anchor pad (9) is fixedly arranged on the side of the transverse partition (4), a fastening nut (10) is arranged on the anchor pad (9), and the threaded steel bar (8) passes through the anchor pad (9) and the fastening nut (10).

4. The temporary connection structure of segmented cantilever assembled beams according to claim 2 or 3, characterized in that: One end of the threaded steel bar (8) in each sleeve (5) is connected to a corresponding first-segment beam tooth ridge (6) on the first-segment beam (1), and the other end of the threaded steel bar (8) in each sleeve (5) is connected to a corresponding third-segment beam tooth ridge (7) on the third-segment beam (3).

5. The temporary connection structure of segmented cantilever assembled beams according to claim 1 or 2, characterized in that: The sleeve (5) is a PVC sleeve.

6. The temporary connection structure of segmented cantilever assembled beams according to claim 3 is characterized in that: An anchor pad (9) is fixedly arranged on each side of the transverse partition (4), and a fastening nut (10) is arranged on the outer side of each anchor pad (9).

7. The temporary connection structure of segmented cantilever assembled beams according to claim 6, characterized in that: One side of each threaded steel bar (8) passes through a corresponding anchor plate washer (9) and a corresponding fastening nut (10), and the other side of each threaded steel bar (8) passes through a corresponding anchor plate washer (9) and a corresponding fastening nut (10).

8. The temporary connection structure of segmented cantilever assembled beams according to claim 1 or 2, characterized in that: The first segment beam (1), the second segment beam (2), and the third segment beam (3) are arranged in close proximity.

9. The temporary connection structure of segmented cantilever assembled beams according to claim 4, characterized in that: A plurality of sleeves (5) are arranged at the same height and in intervals on the transverse partition (4), each sleeve (5) is aligned with a first-segment beam tooth (6) at the same height on the first-segment beam (1), and each sleeve (5) is aligned with a third-segment beam tooth (7) at the same height on the third-segment beam (3).

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