A three-column fork-shaped cap beam for renovation and expansion projects without interrupting traffic

Abstract

The utility model relates to the technical field of bridge widening structure, and discloses a three-column fork-shaped cap beam for renovation and expansion engineering without interrupting traffic, including symmetrical existing bridge piers and existing cap beams arranged on two existing bridge piers, and also including a plurality of newly added bridge piers and newly added cap beams arranged on the plurality of newly added bridge piers; the number of newly added bridge piers is at least three, the two newly added bridge piers and an existing bridge pier are in a straight line along the laying direction of the bridge, and the newly added cap beam is Y-shaped; the side of the newly added bridge pier is provided with a support unit for supporting the newly added cap beam. In the utility model, a plurality of newly added bridge piers and newly added cap beams are arranged, two of the newly added bridge piers are in a straight line with an existing bridge pier, and are consistent with the laying direction of the highway bridge, and the newly added cap beam in a Y shape is laid on the plurality of newly added bridge piers, and the stability of the newly added cap beam is improved by the three newly added bridge piers, while ensuring the width of the road under the bridge.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge widening structures, in particular to a three-column fork-shaped cap beam for a reconstruction and expansion project without interrupting traffic. Background Art

[0002] With the continuous growth of traffic volume, congestion on highways has become increasingly serious, which has had a great impact on the safety of national highways and the smooth flow of major channels. In order to meet the needs of the growing traffic volume in these areas, it is very necessary to renovate and expand existing highways. Under the premise of not affecting traffic, highways can implement renovations such as roadbed splicing, bridge widening, and composite three-dimensional expansion.

[0003] In order to ensure the structural safety of the entire bridge, the prior art has made many improvements to the widening structure of high-speed bridges, such as the patent with the publication number CN210262769U, which discloses a hollow slab bridge reinforcement and widening structure, which solves the problem of easy settlement and poor bearing capacity when the existing hollow slab bridge is widened. It includes the original hollow slab and the widened hollow slab distributed on the left and right, and a cast-in-place wet joint is arranged between the adjacent original hollow slabs and the widened hollow slabs, and the original hollow slab is provided with embedded steel bars, and the widened hollow slab is provided with pre-embedded steel bars, and the cast-in-place wet joint is provided with stirrups; the upper and lower ends of the original hollow slab and the widened hollow slab are provided with C40 fine stone concrete leveling layers, and the outer end faces of the C40 fine stone concrete leveling layers are provided with channel steels, the notches of the two channel steels are arranged back to back, and the two channel steels are provided with galvanized bolts, and the two channel steels are provided with high-strength tension bolts. The utility model integrates the old and new bridge structures, meets the settlement between the old and new bridges, and improves the bearing capacity of the existing bridge slab, meets current specifications, and ensures the safety of the overall bridge structure.

[0004] The above patent has obvious beneficial effects, but still has the following shortcomings in actual operation:

[0005] In the above-mentioned comparative documents, the effect of widening the expressway is achieved by adding a new wide cap beam. Of course, in the case of a new cap beam, piers and cap beams must be added. If the cap beam is rigidly connected to the existing cap beam, the bearing capacity of the existing lower structure piers will be too large, and the piers and pile foundations will need to be modified. If the lower structure on the widened side is a double-column pier, the width of the expanded and widened bridge is small, resulting in insufficient width of the road under the bridge. Therefore, this field is in urgent need of improving the three-column fork-shaped cap beam for expansion and reconstruction projects that do not interrupt traffic, so as to solve the defects of the existing technology. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a three-column fork-shaped cap beam for renovation and expansion projects without interrupting traffic, which improves the stability of the newly added cap beam through three newly added piers and ensures the width of the road under the bridge.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-column fork-shaped cap beam for a renovation and expansion project without interrupting traffic, comprising symmetrical existing bridge piers and existing cap beams arranged on two existing bridge piers, and also comprising a plurality of newly added bridge piers and newly added cap beams arranged on the plurality of newly added bridge piers;

[0008] There are at least three newly added bridge piers, two newly added bridge piers and an existing bridge pier are in a straight line along the bridge laying direction, and the newly added cap beam is Y-shaped;

[0009] The side of the newly added bridge pier is provided with a supporting unit for supporting the newly added cap beam.

[0010] Preferably, the support unit comprises mounting rings respectively fixedly mounted on the sides of two newly added bridge piers, support platforms are fixedly mounted on the sides of the mounting rings, steel structure supports are arranged on the two support platforms, and the upper surface of the steel structure supports is in contact with the lower surface of the newly added cap beam.

[0011] Preferably, a sliding groove is provided on the upper surface of the support platform, and an adaptive slider is slidably connected in the sliding groove, and a first adjusting screw is rotatably connected in the sliding groove, the first adjusting screw passes through the slider and is threadedly connected to the slider, one end of the first adjusting screw extends to the outside of the support platform, and a first limiting ring is threadedly connected to the side of the end of the first adjusting screw extending to the outside, a bearing plate is provided above the slider, and a symmetrical clamping plate that is adapted to the steel structure support is fixedly installed on the upper surface of the bearing plate.

[0012] Preferably, the upper surface of the slider is tightly attached to an extrusion block located in the slide groove, the upper surface of the extrusion block is arranged in an inclined surface and is adapted to the lower surface of the bearing plate, a plurality of limit columns are fixedly installed on the lower surface of the bearing plate, one end of the limit column is passed through the upper surface of the slider, a high-elasticity spring is provided between the lower surface of the bearing plate and the upper surface of the slider and is sleeved on the side of the limit column, a yield opening is opened through the extrusion block, the yield opening is adapted to the high-elasticity spring, and the support platform is provided with an adjustment unit for moving the extrusion block.

[0013] Preferably, the adjustment unit includes two limit rods symmetrically fixedly connected to one end of the extrusion block, one end of the two limit rods passes through the support platform and extends to the outside, a connecting plate is fixedly installed between the ends of the two limit rods located on the outside, a second adjusting screw is rotatably connected to one side of the support platform, the second adjusting screw passes through the connecting plate and is threadedly connected to the connecting plate, and a plurality of second limit rings are threadedly connected to the side of the second adjusting screw.

[0014] Preferably, the extrusion block has limit strips fixedly mounted on the opposite sides thereof, and the opposite side walls in the slide groove are provided with limit grooves adapted to the limit strips.

[0015] Preferably, the mounting ring is composed of two semicircular rings, mounting plates are fixedly mounted on the sides of both ends of the semicircular rings, fastening bolts for connection are arranged between several mounting plates, and several anchor bolts with one end inserted into the newly added bridge piers penetrate the side of the mounting ring.

[0016] In view of the shortcomings of the prior art, the utility model provides a three-column fork-shaped cap beam for renovation and expansion projects without interrupting traffic, which overcomes the shortcomings of the prior art. The beneficial effects of the utility model are:

[0017] 1. In the utility model, several new bridge piers and new cap beams are arranged, two of which are in a straight line with an existing bridge pier and consistent with the laying direction of the highway bridge. A Y-shaped new cap beam is laid on the several new bridge piers. The stability of the new cap beam is improved by three new bridge piers, and the width of the road under the bridge is guaranteed at the same time.

[0018] 2. In the utility model, a support unit is provided to improve the stability of the newly added cap beam, and the first adjusting screw rod and the second adjusting screw rod cooperate to displace the lateral and vertical positions of the steel structure support member, so that construction workers can reinforce the newly added cap beam.

[0019] 3. In the utility model, the mounting ring is composed of two semicircles, and the mounting plate and the fastening bolts cooperate to facilitate the installation and fixation of the mounting ring, and cooperate with the installation of the anchor bolts to improve the stability of the support platform after installation.

[0020] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0022] Figure 1 It is a schematic diagram of the structure after the construction of the newly added cap beam and the newly added bridge piers in the utility model;

[0023] Figure 2 It is a structural schematic diagram of a newly added cap beam and newly added bridge piers in the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the steel structure support member supporting the newly added cap beam in the utility model;

[0025] Figure 4It is a structural schematic diagram of the installation ring of the utility model when it is installed on the side of the newly added bridge pier;

[0026] Figure 5 It is a structural schematic diagram of the support platform and the mounting ring in the utility model;

[0027] Figure 6 It is a schematic diagram of the structure when the extrusion block in the utility model moves to the bottom of the bearing plate;

[0028] Figure 7 It is a structural schematic diagram of a partial cross-section of the support platform in the utility model;

[0029] Figure 8 It is a structural schematic diagram of a partial cross-section of a load-bearing plate and a sliding block in the utility model.

[0030] In the figure: 1. existing bridge piers; 2. existing cap beams; 3. newly added bridge piers; 4. newly added cap beams; 5. support units; 6. mounting rings; 7. support platforms; 8. steel structure supports; 9. slideways; 10. sliders; 11. first adjusting screw rods; 12. first limiting rings; 13. load-bearing plates; 14. clamping plates; 15. extrusion blocks; 16. limiting columns; 17. high-elastic springs; 18. clearance openings; 19. limiting rods; 20. connecting plates; 21. second adjusting screw rods; 22. second limiting rings; 23. limiting strips; 24. limiting grooves; 25. mounting plates; 26. fastening bolts; 27. anchor bolts. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] Embodiment 1

[0033] See also Figure 1-Figure 8 A three-column fork-shaped cap beam for a renovation and expansion project without interrupting traffic, comprising symmetrical existing piers 1 and existing cap beams 2 arranged on two existing piers 1, and also comprising a number of newly added piers 3 and newly added cap beams 4 arranged on the several newly added piers 3; there are at least three newly added piers 3, two newly added piers 3 and an existing pier 1 are in a straight line along the bridge laying direction, and the newly added cap beam 4 is Y-shaped; a support unit 5 for supporting the newly added cap beam 4 is provided on the side of the newly added pier 3.

[0034] Specific implementation method in this embodiment: When widening the bridge of the expressway, pile foundation is constructed at the position of the newly added pier 3, and the newly added pier 3 is built on the pile foundation, two of the newly added piers 3 are in a straight line with an existing pier 1, and are consistent with the laying direction of the expressway bridge, and one or two newly added piers 3 can be added to the lower side of the end of the newly added cap beam 4 away from the existing cap beam 2. In this embodiment, three newly added piers 3 are taken as an example. After the construction of the three newly added piers 3 is completed, the newly added cap beam 4 in a Y shape (also in a fork shape) is laid on several newly added piers 3, and there is a distance between the newly added cap beam 4 and the existing cap beam 2. After the newly added cap beam 4 is laid on the outside, the bridge is laid and widened. The above-mentioned whole can be constructed without interrupting traffic during construction, and the stability of the newly added cap beam 4 is improved by the three newly added piers 3, while the width of the road under the bridge is guaranteed. The support unit 5 is used to support and reinforce the newly added cap beam 4 to improve the stability of the newly added cap beam 4.

[0035] Embodiment 2

[0036] See also Figure 1-Figure 8, this embodiment includes the above-mentioned embodiment, wherein the support unit 5 includes mounting rings 6 respectively fixedly mounted on the sides of the two newly added piers 3, a support platform 7 is fixedly mounted on the side of the mounting ring 6, a steel support 8 is arranged on the two support platforms 7, the upper surface of the steel support 8 is in contact with the lower surface of the newly added cap beam 4, a slide groove 9 is provided on the upper surface of the support platform 7, an adaptive slider 10 is slidably connected in the slide groove 9, a first adjusting screw rod 11 is rotatably connected in the slide groove 9, the first adjusting screw rod 11 passes through the slider 10 and is threadedly connected to the slider 10, one end of the first adjusting screw rod 11 extends to the outside of the support platform 7, and a first limiting ring 12 is threadedly connected to the side of one end of the first adjusting screw rod 11 extending to the outside, a bearing plate 13 is arranged above the slider 10, a symmetrical card plate 14 that is adapted to the steel support 8 is fixedly mounted on the upper surface of the bearing plate 13, an extrusion block 15 located in the slide groove 9 is tightly attached to the upper surface of the slider 10, the upper surface of the extrusion block 15 is inclined and adapted to the lower surface of the bearing plate 13, and the lower surface of the bearing plate 13 is fixed A plurality of limit columns 16 are fixedly installed, one end of the limit column 16 is penetrated on the upper surface of the slider 10, a high elastic spring 17 is provided between the lower surface of the bearing plate 13 and the upper surface of the slider 10 and is sleeved on the side of the limit column 16, a clearance opening 18 is opened through the extrusion block 15, and the clearance opening 18 is adapted to the high elastic spring 17, and the support platform 7 is provided with an adjustment unit for moving the extrusion block 15, and the adjustment unit includes two limit rods 19 symmetrically fixedly connected to one end of the extrusion block 15, and the two limit rods 19 One end of each passes through the support platform 7 and extends to the outside, a connecting plate 20 is fixedly installed between the ends of the two limit rods 19 located on the outside, a second adjusting screw rod 21 is rotatably connected to one side of the support platform 7, the second adjusting screw rod 21 passes through the connecting plate 20 and is threadedly connected to the connecting plate 20, and a plurality of second limiting rings 22 are threadedly connected to the side of the second adjusting screw rod 21, a limiting strip 23 is fixedly installed on the opposite side of the extrusion block 15, and limiting grooves 24 adapted to the limiting strip 23 are provided on the opposite side walls of the slide groove 9.

[0037] Specific implementation method of this embodiment: When it is necessary to use the support unit 5 to support the newly added cap beam 4, it is first fixedly installed on the two newly added bridge piers 3 sides respectively through the installation ring 6, and the steel structure support 8 is placed between the two clamping plates 14. When using the steel structure support 8 to support the newly added cap beam 4, it is necessary to support the steel structure support 8 at the optimal force point. In order to ensure the accuracy of the movement of the steel structure support 8, the steel structure support 8 is usually moved manually at the end. Since the steel structure support 8 is heavy, it is difficult to move the steel structure support 8 on the support platform 7. Therefore, in this embodiment, the first adjusting screw rod 11 is rotated. When the first adjusting screw rod 11 rotates, the slider 10 is driven to slide in the slide groove 9. Due to the limitation and support of the two limit columns 16 and the high-elasticity spring 17, the slider 10 drives the load-bearing plate 13 to move when it moves. Due to the limitation of the two clamping plates 14 on the steel structure support 8, the steel structure support 8 is driven on the support platform 7. When the position of the steel structure support 8 is adjusted, the position of the first adjusting screw rod 11 is limited and fixed by tightening the first limiting ring 12, and then the second adjusting screw rod 21 is rotated. When the second adjusting screw rod 21 is rotated, the connecting plate 20 is driven to move. When the connecting plate 20 moves, the extrusion block 15 is driven to move through the limiting rod 19, and the extrusion block 15 is limited by the limiting strip 23 and the limiting groove 24, and the giving way 18 gives way to the high elastic spring 17, and the extrusion block 15 moves to the bottom of the bearing plate 13, and the upper surface of the extrusion block 15 and the lower surface of the bearing plate 13 are both adapted to the inclined surface. When the extrusion block 15 moves, it will squeeze the bearing plate 13 to move upward, and then push the steel structure support 8 to move upward. The steel structure support 8 moves up until its upper surface is in close contact with the lower surface of the newly added cap beam 4, stop rotating the second adjusting screw rod 21, and tighten several second limiting rings 22 to fix the position of the extrusion block 15, so as to facilitate the use and adjustment of the steel structure support 8 to support the newly added cap beam 4.

[0038] Embodiment 3

[0039] See also Figure 2-Figure 5 This embodiment includes all the above embodiments, which further includes: the mounting ring 6 is composed of two semicircular rings, and mounting plates 25 are fixedly installed on the sides of both ends of the semicircular rings, and fastening bolts 26 for connection are arranged between the plurality of mounting plates 25, and a plurality of anchor bolts 27 with one end inserted into the newly added pier 3 are penetrated through the side of the mounting ring 6.

[0040] The specific implementation method in this embodiment is as follows: the anchor bolts 27 are used to install the mounting rings 6 by means of existing technology, and the two semicircular mounting rings 6 are clamped to the sides of the newly added piers 3 by means of fastening bolts 26, so as to facilitate installation by construction workers and ensure that the support platform 7 has strong stability.

[0041] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A three-column fork-shaped cap beam for a renovation and expansion project without interrupting traffic, comprising symmetrical existing bridge piers (1) and existing cap beams (2) arranged on two existing bridge piers (1), characterized in that: It also includes a plurality of newly added bridge piers (3) and a newly added cap beam (4) arranged on the plurality of newly added bridge piers (3); There are at least three newly added bridge piers (3), two newly added bridge piers (3) and an existing bridge pier (1) are in a straight line along the bridge laying direction, and the newly added cap beam (4) is Y-shaped; A support unit (5) for supporting a newly added cap beam (4) is provided on the side of the newly added bridge pier (3).

2. The three-column fork-shaped cap beam for a renovation and expansion project without interrupting traffic according to claim 1, characterized in that: The support unit (5) comprises a mounting ring (6) fixedly mounted on the sides of two newly added bridge piers (3), a support platform (7) fixedly mounted on the side of the mounting ring (6), a steel structure support member (8) being provided on the two support platforms (7), and an upper surface of the steel structure support member (8) being in contact with a lower surface of the newly added cap beam (4).

3. The three-column fork-shaped cap beam for a renovation and expansion project without interrupting traffic according to claim 2, characterized in that: The upper surface of the support platform (7) is provided with a slide groove (9), and an adapted slider (10) is slidably connected in the slide groove (9), and a first adjusting screw rod (11) is rotatably connected in the slide groove (9), and the first adjusting screw rod (11) passes through the slider (10) and is threadedly connected to the slider (10), one end of the first adjusting screw rod (11) extends to the outside of the support platform (7), and a first limiting ring (12) is threadedly connected to the side surface of the end of the first adjusting screw rod (11) extending to the outside, and a bearing plate (13) is provided above the slider (10), and a symmetrical clamping plate (14) adapted to the steel structure support (8) is fixedly installed on the upper surface of the bearing plate (13).

4. The three-column fork-shaped cap beam for a renovation and expansion project without interrupting traffic according to claim 3, characterized in that: The upper surface of the slider (10) is tightly attached to an extrusion block (15) located in the slide groove (9); the upper surface of the extrusion block (15) is arranged in an inclined surface and is adapted to the lower surface of the bearing plate (13); a plurality of limit columns (16) are fixedly installed on the lower surface of the bearing plate (13); one end of the limit column (16) is passed through the upper surface of the slider (10); a high elastic spring (17) sleeved on the side of the limit column (16) is arranged between the lower surface of the bearing plate (13) and the upper surface of the slider (10); a clearance opening (18) is opened through the extrusion block (15); the clearance opening (18) is adapted to the high elastic spring (17); and the support platform (7) is provided with an adjustment unit for moving the extrusion block (15).

5. The three-column fork-shaped cap beam for a renovation and expansion project without interrupting traffic according to claim 4, characterized in that: The adjustment unit comprises two limit rods (19) symmetrically fixedly connected to one end of the extrusion block (15), one end of each of the two limit rods (19) passes through the support platform (7) and extends to the outside, a connecting plate (20) is fixedly installed between the ends of the two limit rods (19) located at the outside, a second adjustment screw rod (21) is rotatably connected to one side of the support platform (7), the second adjustment screw rod (21) passes through the connecting plate (20) and is threadedly connected to the connecting plate (20), and a plurality of second limit rings (22) are threadedly connected to the side of the second adjustment screw rod (21).

6. The three-column fork-shaped cap beam for a renovation and expansion project without interrupting traffic according to claim 4, characterized in that: A limiting strip (23) is fixedly mounted on the opposite side of the extrusion block (15), and limiting grooves (24) adapted to the limiting strip (23) are provided on the opposite side walls in the slide groove (9).

7. The three-column fork-shaped cap beam for a renovation and expansion project without interrupting traffic according to claim 2, characterized in that: The mounting ring (6) is composed of two semicircular rings, and mounting plates (25) are fixedly mounted on the side surfaces of both ends of the semicircular rings. A plurality of fastening bolts (26) for connection are arranged between the mounting plates (25). A plurality of anchor bolts (27) with one end inserted into the newly added bridge pier (3) are passed through the side surface of the mounting ring (6).

Images