Rapid construction fabricated bridge

Abstract

The utility model provides a rapid construction assembly type bridge which comprises a pair of cable-stayed frames used for being assumed on the two banks of a river channel correspondingly, and each cable-stayed frame comprises a base and a bridge tower erected on the base; one end of each splicing assembly is connected with the base on the corresponding side, the other side of each splicing assembly is connected with the other splicing assembly, and the pair of splicing assemblies respectively form half parts of the bridge body; one end of the cable-stayed sling is connected to the bridge tower, and the other end of the cable-stayed sling is connected with the splicing assembly located on the corresponding side of the bridge tower; the two ends of the connecting cable are connected to the pair of bases correspondingly, and the connecting cable is connected with the pair of splicing assemblies in series so as to bear the splicing assemblies; wherein the cable-stayed sling and the connecting cable both comprise a plurality of steel strands which are detachably connected. The quick construction fabricated bridge is high in fabricated degree, and cable-stayed bridges can be erected according to river channels with different widths.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of prefabricated bridges, and in particular to a fast-construction prefabricated bridge. Background Art

[0002] A cable-stayed bridge, also known as a cable-tensioned bridge, features a main girder directly connected to the towers by multiple cables. The structure is composed of compression-bearing towers, tension-bearing cables, and a bending-bearing beam. It can be thought of as a multi-span elastically supported connecting beam with cables replacing buttresses. This reduces bending moments within the beams, lowering building height, reducing structural weight, and conserving materials.

[0003] Cable-stayed bridges have a long construction period and poor economic benefits. To address this, a prefabricated cable-stayed bridge has been developed that can reduce the construction period. However, traditional prefabricated cable-stayed bridges have a low degree of assembly and are not convenient for adaptive adjustment to rivers of different widths. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a fast-construction prefabricated bridge to solve the above-mentioned problems.

[0005] The present application provides a fast-construction prefabricated bridge, comprising:

[0006] a pair of cable-stayed frames, the pair of cable-stayed frames being respectively erected on both sides of a river channel, the cable-stayed frames comprising a base and a bridge tower erected on the base;

[0007] A pair of splicing components, one end of each splicing component is connected to the base on the corresponding side, and the other end is connected to another splicing component, and the pair of splicing components respectively form half of the bridge body;

[0008] An oblique-stayed sling, one end of which is connected to the bridge tower, and the other end of which is connected to the splicing assembly located on the corresponding side of the bridge tower;

[0009] A connecting rope, with both ends of the connecting rope connected to a pair of the bases respectively, and the connecting rope connects the pair of splicing components in series to support the splicing components;

[0010] Wherein, the oblique-stayed sling and the connecting rope both include a plurality of detachably connected steel strands.

[0011] According to the technical solution provided in the embodiment of the present application, the splicing assembly includes a plurality of splicing units that are mutually engaged along a first direction, where the first direction is the arrangement direction of the pair of inclined-stayed frames, and the splicing units include:

[0012] a lap plate, the top surface of which forms the bridge deck of the bridge body;

[0013] A beam member, one end of the beam member is convex to form a clamping portion, and the other end is concave to form a clamping groove that cooperates with the clamping portion; the beam member includes a first beam member and a second beam member respectively arranged at both ends of the lap plate, and the top of the first beam member and the second beam member is close to the side wall of the lap plate and is provided with a lap portion for lapping the lap plate.

[0014] According to the technical solution provided in the embodiment of the present application, a compression zone is formed at the top of the beam, and a tension zone is formed at the bottom of the beam. The tension zone and the compression zone are provided with mounting holes for the connecting rope to pass through, and the number of mounting holes in the tension zone is greater than the number of mounting holes in the compression zone.

[0015] According to the technical solution provided in the embodiment of the present application, the steel strand includes a receiving portion and a connecting portion provided at both ends of the receiving portion. The two adjacent steel strands are connected by a steel strand connecting piece. The connecting portion is provided with an external thread, and the steel strand connecting piece is provided with an internal thread.

[0016] According to the technical solution provided in the embodiment of the present application, a spiral protrusion is formed on the surface of the receiving portion.

[0017] According to the technical solution provided in the embodiment of the present application, it also includes an anchoring structure for fixing the inclined-stayed cable, and the anchoring structure is respectively fixed on the bridge tower and the third beam member, and the third beam member is the beam member in the splicing unit connected to each other on a pair of the splicing components.

[0018] According to the technical solution provided in the embodiment of the present application, the connection positions of a pair of the splicing assemblies are butted together by the clamping portions of the two third beam members, and the butted positions are filled with poured concrete.

[0019] According to the technical solution provided in the embodiment of the present application, the base is pre-embedded with the steel twisted piece or a threaded hole for connecting with the steel twisted piece.

[0020] According to the technical solution provided in the embodiment of the present application, a stabilizing cable is provided on the side of the bridge tower away from the inclined-stayed cable, one end of the stabilizing cable is connected to the base, and the stabilizing cable includes a plurality of the steel strands.

[0021] Compared with the prior art, the beneficial effects of the present application are: by setting a pair of cable-stayed frames to form the two ends of the cable-stayed bridge, a pair of splicing components are installed between the pair of cable-stayed frames to form the main body of the cable-stayed bridge, and the splicing components are set in an assembled manner, which makes it easy to assemble the cable-stayed bridge; by setting the cable-stayed cables and connecting cables to be assembled and combined through steel twisted pieces, the cable-stayed cables and connecting cables can be adjusted according to the required length, and thus adapted to cable-stayed bridges in rivers of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 A schematic diagram of the structure of the fast-construction prefabricated bridge provided for this application;

[0024] Figure 2 Schematic diagram of the structure of the splicing unit;

[0025] Figure 3 Schematic diagram of the structure of the steel strand;

[0026] Figure 4 It is a schematic diagram of the connection between two steel strands;

[0027] Figure 5 Schematic diagram of the docking of two third beams.

[0028] Figure numbers: 1. Base; 2. Bridge tower; 3. Cable-stayed suspender; 4. Connecting cable; 5. Steel strand; 6. Splicing unit; 7. Lap plate; 8. First beam; 9. Second beam; 10. Clamping part; 11. Clamping groove; 12. Compression zone; 13. Tension zone; 14. Mounting hole; 15. Supporting part; 16. Connecting part; 17. Steel strand connector; 18. Anchoring structure; 19. Third beam; 20. Stabilizing cable. DETAILED DESCRIPTION

[0029] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] Please refer to Figure 1-Figure 5 , the present application provides a fast-construction prefabricated bridge, comprising:

[0032] A pair of cable-stayed frames, each of which is used to be located on both sides of a river, and each of which includes a base 1 and a bridge tower 2 erected on the base 1;

[0033] A pair of splicing components, one end of each splicing component is connected to the base 1 on the corresponding side, and the other end is connected to another splicing component, and the pair of splicing components respectively form half of the bridge body;

[0034] An oblique-stayed cable 3, one end of which is connected to the bridge tower 2, and the other end of which is connected to the splicing assembly located on the corresponding side of the bridge tower 2;

[0035] A connecting rope 4, with both ends of the connecting rope 4 connected to a pair of the bases 1 respectively, and the connecting rope 4 connects a pair of the splicing components in series to support the splicing components;

[0036] Wherein, the oblique-stayed sling 3 and the connecting rope 4 both include a plurality of detachably connected steel strands 5 .

[0037] Specifically, the cable-stayed frame comprises a base 1 and a tower 2. A pair of bases 1 are fixed on both sides of a river and serve as counterweights. The tower 2 is erected on the top surface of the base 1. The pair of cable-stayed frames serve as the two ends of a cable-stayed bridge. The bridge body of the cable-stayed bridge is formed by a pair of splicing components, one end of which is spliced ​​together and the other end is connected to the base 1 on the corresponding side. The splicing components are connected to the base 1 and the tower 2 via cable-stayed cables 3 and connecting cables 4. The connecting cables 4 span the river and are connected to the pair of bases 1 at both ends. The connecting cables 4 pass through the splicing components, thereby connecting and fixing the two splicing components in series. The connecting cables 4 are responsible for supporting the bridge body. The cable-stayed cables 3 are connected to the top of the tower 2 at one end and to the farther end of the splicing component on the corresponding side at the other end. The cable-stayed cables 3 are used to improve the stability of the bridge body. In the application, not only the bridge body is an assembled structure, but the inclined cables 3 and the connecting cables 4 are also assembled structures. The inclined cables 3 and the connecting cables 4 are both composed of a plurality of steel strands 5 connected in sequence. The steel strands 5 serve as the smallest units of the inclined cables 3 and the connecting cables 4. During construction, different numbers of the steel strands 5 can be selected for connection according to the required length, thereby ensuring the stability of the bridge body while having higher adaptability, and being suitable for the construction of cable-stayed bridges with different river widths.

[0038] Furthermore, a stabilizing cable 20 is provided on a side of the bridge tower 2 away from the inclined-stayed cable 3 , one end of the stabilizing cable 20 is connected to the base 1 , and the stabilizing cable 20 includes a plurality of the steel strands 5 .

[0039] Specifically, in order to improve the stability of the bridge tower 2, a stabilizing cable 20 is further provided on the side of the bridge tower 2 away from the inclined cable 3. The stabilizing cable 20 has the same composition as the inclined cable 3 and the connecting cable 4. By connecting one end of the stabilizing cable 20 to the top of the bridge tower 2 and the other end being obliquely pulled to the base 1 and connected to the base 1, the pulling force of the inclined cable 3 on the bridge tower 2 is offset.

[0040] Furthermore, the splicing assembly includes a plurality of splicing units 6 that are mutually engaged along a first direction, where the first direction is the arrangement direction of the pair of inclined-stayed frames, and the splicing units 6 include:

[0041] A lap plate 7, the top surface of which forms the bridge deck of the bridge body;

[0042] A beam member, one end of the beam member is convex to form a clamping portion 10, and the other end is concave to form a clamping groove 11 that cooperates with the clamping portion 10; the beam member includes a first beam member 8 and a second beam member 9 respectively arranged at both ends of the lap plate 7, and the top of the first beam member 8 and the second beam member 9 is close to the side wall of the lap plate 7 and is provided with a lap portion 21 for lapping the lap plate 7.

[0043] Specifically, such as Figure 1 and Figure 2 As shown, the splicing assembly is composed of a plurality of splicing units 6, so that the splicing assembly can obtain different lengths according to the number of the splicing units 6, which is used to adapt to rivers of different widths. The splicing units 6 further include a lap plate 7 and a beam. The lap plate 7 serves as the bridge deck of the bridge body, and the beam serves as the bridge of the bridge body. Adjacent splicing units 6 are clamped together by the beam. A "convex"-shaped clamping portion 10 is formed at one end of the beam, and a "concave"-shaped clamping groove 11 that cooperates with the clamping portion 10 is formed at the other end. By extending the clamping portion 10 into the clamping groove 11, the two beams can be clamped together to avoid misalignment in the vertical direction, thereby connecting the two splicing units 6. The beams of each splicing unit 6 further include a first beam 8 and a second beam 9, which are respectively arranged at the left and right ends of the lap plate 7, wherein the lap plate 7 is a rectangular plate, with the two wide sides of the lap plate 7 serving as the left and right sides, the two long sides of the lap plate 7 corresponding to the clamping portion 10 being the front side, and the two long sides of the lap plate 7 corresponding to the clamping groove 11 being the rear side; a lap portion 21 is provided on the top right side of the first beam 8 and the top left side of the second beam 9, and the two wide sides of the lap plate 7 are respectively lapped on the two lap portions 21. After lap connection, the top surface of the lap plate 7 is flush with the top surfaces of the first beam 8 and the second beam 9. The lap plate 7 and the beams are both prefabricated concrete parts.

[0044] Furthermore, a compression zone 12 is formed at the top of the beam, and a tension zone 13 is formed at the bottom of the beam. The tension zone 13 and the compression zone 12 are provided with mounting holes 14 for the connecting rope 4 to pass through. The number of mounting holes 14 in the tension zone 13 is greater than the number of mounting holes 14 in the compression zone 12.

[0045] Specifically, such as Figure 2As shown, the connection between the connecting cable 4 and each of the splicing units 6 is achieved through the beam. The beam is provided with mounting holes 14 that pass through both ends of the beam. The connecting cable 4 passes through the mounting holes 14 to connect multiple beams in series, thereby supporting the beam. When supporting the lap plate 7, the upper portion of the beam forms a compression zone 12, and the lower portion forms a tension zone 13. To improve the stability of the bridge, mounting holes 14 are provided in both the compression zone 12 and the tension zone 13 to allow more connecting cables 4 to pass through. Since the tensile strength of the concrete beam is much lower than its compressive strength, more mounting holes 14 are provided in the tension zone 13. By passing more connecting cables 4 through the tension zone 13, the tensile strength of the beam is compensated.

[0046] Furthermore, the steel strand 5 includes a receiving portion 15 and connecting portions 16 provided at both ends of the receiving portion 15 , and two adjacent steel strands 5 are connected by a steel strand connector 17 , the connecting portion 16 is provided with an external thread, and the steel strand connector 17 is provided with an internal thread.

[0047] Specifically, such as Figure 3 and Figure 4 As shown, the steel strand 5 serves as the smallest unit of the oblique-stayed sling 3 and the connecting rope 4. The number of the connected steel strands 5 can be selected according to demand. The middle part of the steel strand 5 serves as the main body to form the receiving portion 15. The two ends of the receiving portion 15 extend outward to form a connecting portion 16. The connecting portion 16 is provided with an external thread. The adjacent steel strands 5 are connected by a steel strand connector 17 with an internal thread. The steel strand connector 17 is cylindrical. The oblique-stayed sling 3 and the connecting rope 4 can be obtained by alternately connecting a plurality of the steel strands 5 and the steel strand connector 17.

[0048] Furthermore, a spiral protrusion is formed on the surface of the receiving portion 15 .

[0049] Specifically, such as Figure 3 As shown, the protrusions on the surface of the receiving portion 15 are used to improve the structural strength of the steel strand 5 on the one hand, and on the other hand, when cooperating with the mounting hole 14, can prevent the beam and the connecting cable 4 from rotating relative to each other to a certain extent.

[0050] Furthermore, it also includes an anchoring structure 18 for fixing the inclined-stayed cable 3, and the anchoring structure 18 is respectively fixed on the bridge tower 2 and the third beam 19. The third beam 19 is the beam in the splicing unit 6 connected to each other on a pair of the splicing components.

[0051] Specifically, such as Figure 1 and Figure 5As shown, the anchoring structure 18 is cylindrical and has a threaded inner wall. The anchoring structure 18 can be threadedly connected to the connecting portion 16. The anchoring structure 18 is arranged on the top of the bridge tower 2 for connecting one end of the inclined cable 3; the anchoring structure 18 is also arranged on the top surface of the beam member at the farthest end of the bridge tower 2 on the corresponding side of each splicing assembly, that is, it is also arranged on the top surface of the third beam member 19 for connecting the other end of the inclined cable 3; the anchoring structure 18 is fixed to the bridge tower 2 and the third beam member 19 by welding.

[0052] Furthermore, the connection positions of a pair of the splicing assemblies are butted together by the clamping portions 10 of the two third beam members 19, and the butted positions are filled with poured concrete.

[0053] Specifically, to ensure that the bridge deck is covered as evenly as possible by the lap plate 7, the beams in the two splicing assemblies are arranged facing each other so that the lap plate 7 on the side closest to the base 1 can extend to the edge of the base 1. This arrangement results in the beams at the docking position of the two splicing assemblies being docked with connecting portions 16 and 16. The gaps created at the docking positions are filled by pouring concrete to ensure the flatness of the bridge deck.

[0054] Furthermore, the base 1 is pre-buried with the steel strand 5 or a threaded hole for connecting with the steel strand 5 .

[0055] Specifically, such as Figure 1 As shown, several sections of connected steel strands 5 are pre-buried on the base 1 or threaded holes are opened to fix the two ends of the connecting rope 4, so that the installation of the connecting rope 4 is facilitated.

[0056] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. A fast-construction assembled bridge, characterized in that: include: A pair of cable-stayed frames, the pair of cable-stayed frames being used to be respectively erected on both sides of a river channel, the cable-stayed frames comprising a base (1) and a bridge tower (2) erected on the base (1); A pair of splicing components, one end of each splicing component is connected to the base (1) on the corresponding side, and the other end is connected to another splicing component, and the pair of splicing components respectively form half of the bridge body; An inclined-stayed sling (3), one end of the inclined-stayed sling (3) being connected to the bridge tower (2), and the other end being connected to the splicing assembly located on the corresponding side of the bridge tower (2); A connecting rope (4), wherein both ends of the connecting rope (4) are respectively connected to a pair of the bases (1), and the connecting rope (4) connects a pair of the splicing components in series to support the splicing components; Wherein, the inclined sling (3) and the connecting rope (4) both include a plurality of detachably connected steel strands (5).

2. The rapid construction prefabricated bridge according to claim 1, characterized in that: The splicing assembly comprises a plurality of splicing units (6) that are mutually engaged along a first direction, wherein the first direction is the arrangement direction of a pair of the inclined-stayed frames, and the splicing units (6) comprise: A lap plate (7), the top surface of the lap plate (7) forming the bridge deck of the bridge body; A beam member, wherein one end of the beam member is convex to form a clamping portion (10), and the other end is concave to form a clamping groove (11) that cooperates with the clamping portion (10); the beam member comprises a first beam member (8) and a second beam member (9) respectively arranged at two ends of the lap plate (7), and a lap portion (21) for lapping the lap plate (7) is provided at the top of the first beam member (8) and the second beam member (9) near the side wall of the lap plate (7).

3. The rapid construction prefabricated bridge according to claim 2, characterized in that: A compression zone (12) is formed at the top of the beam, and a tension zone (13) is formed at the bottom of the beam. Mounting holes (14) for the connecting rope (4) to pass through are provided on the tension zone (13) and the compression zone (12). The number of mounting holes (14) in the tension zone (13) is greater than the number of mounting holes (14) in the compression zone (12).

4. The rapid construction prefabricated bridge according to claim 3, characterized in that: The steel strand (5) comprises a receiving portion (15) and connecting portions (16) provided at both ends of the receiving portion (15), and two adjacent steel strands (5) are connected via a steel strand connecting piece (17), wherein the connecting portion (16) is provided with an external thread, and the steel strand connecting piece (17) is provided with an internal thread.

5. The rapid construction prefabricated bridge according to claim 4, characterized in that: A spiral protrusion is formed on the surface of the receiving portion (15).

6. The rapid construction prefabricated bridge according to claim 5, characterized in that: It also includes an anchoring structure (18) for fixing the inclined suspension cable (3), wherein the anchoring structure (18) is respectively fixed on the bridge tower (2) and a third beam member (19), and the third beam member (19) is the beam member in the splicing units (6) connected to each other on a pair of the splicing assemblies.

7. The rapid construction prefabricated bridge according to claim 6, characterized in that: The connection positions of a pair of the splicing assemblies are butted together by the clamping portions (10) of the two third beam members (19), and the butted positions are filled with poured concrete.

8. The rapid construction prefabricated bridge according to claim 7, characterized in that: The base (1) is pre-buried with the steel twisted piece (5) or a threaded hole for connecting with the steel twisted piece (5).

9. The rapid construction prefabricated bridge according to claim 1, characterized in that: A stabilizing cable (20) is provided on a side of the bridge tower (2) away from the inclined suspension cable (3), one end of the stabilizing cable (20) is connected to the base (1), and the stabilizing cable (20) includes a plurality of the steel strands (5).

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