Bridge tower of extradosed cable-stayed bridge and cable-stayed bridge

Abstract

The utility model provides an extradosed cable-stayed bridge tower, which relates to the technical field of bridges, and comprises a bridge tower framework and concrete, the bridge tower framework comprises at least two vertical profile steel columns, two inclined profile steel columns and at least one horizontal profile steel, all the columns are connected by the horizontal profile steel to form a column shape, and the concrete is arranged in the column shape. One end of each inclined profile steel stand column is connected with a columnar structure formed by vertical stand column profile steel, and the other end of each inclined profile steel stand column is used for being connected with a beam part of a bridge; the concrete is wrapped on the bridge tower framework; the extradosed cable-stayed bridge tower is transited to the double-limb pier from the single-column section in the box girder, the difference between the structure and a conventional herringbone bridge tower is that the exposed bridge tower above the bridge floor is of an integral section, a herringbone forking structure is not arranged, the structure is simple, only one integral tower column is arranged, and a construction template is convenient to erect.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, and in particular to a low-tower cable-stayed bridge tower and a cable-stayed bridge. Background Art

[0002] The existing railway low-tower cable-stayed bridge towers include herringbone-shaped ones. The herringbone-shaped bridge tower can take into account the function of the cable anchoring area at the top of the tower and the structure of the double thin-walled piers of the pier, and the single column section of the cable anchoring area is transitioned to the double column section at the bottom of the tower. Since the lower tower column of the herringbone-shaped bridge tower is an inclined tower column, the template installation is more complicated and requires additional horizontal support, which is relatively inconvenient for construction. Utility Model Content

[0003] The purpose of the utility model is to provide a low-tower cable-stayed bridge tower and a cable-stayed bridge to improve the above problems. In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0004] On the one hand, the present application provides a low-tower cable-stayed bridge tower, wherein the tower frame includes at least two vertical steel columns, two oblique steel columns and at least one horizontal steel, all of the columns are connected by horizontal steels to form a columnar shape, one end of each of the oblique steel columns is connected to the columnar structure formed by the vertical steel columns, and the other end of each of the oblique steel columns is used to connect to the beam of the bridge; the concrete is wrapped on the tower frame.

[0005] Furthermore, it comprises a wire-dividing tube saddle and surrounding steel bars, wherein the wire-dividing tube saddle is arranged on a bridge tower of a low-tower cable-stayed bridge, and the surrounding steel bars are arranged in a spiral shape and are arranged around the outside of the wire-dividing tube saddle.

[0006] Furthermore, it comprises at least one layer of pressure-bearing steel mesh, and each layer of the pressure-bearing steel mesh is arranged below the wire-dividing tube saddle close to the beam portion.

[0007] Furthermore, the wire-dividing tube saddle comprises an outer shell, at least one wire-dividing tube and two tower-end anchor pads, the two tower-end anchor pads are respectively arranged at two ends of the wire-dividing tube, and the tower-end anchor pads are arranged on the side walls of the tower of the low-tower cable-stayed bridge.

[0008] Furthermore, a reinforcing rib is provided between the tower end anchor plate and the wire distribution tube.

[0009] Furthermore, the two tower end anchor plates are each provided with through holes having the same number as the wire distribution tubes.

[0010] Furthermore, the bottom size of the tower of the short-tower cable-stayed bridge tower is larger than the size of the area where the wire distribution tube saddle of the short-tower cable-stayed bridge tower is located.

[0011] Furthermore, a groove with a depth of 20 cm is arranged on the side of the bridge tower of the low-tower cable-stayed bridge.

[0012] On the other hand, the present application also provides a cable-stayed bridge, which uses the low-tower cable-stayed bridge tower as described above.

[0013] Furthermore, the cable-stayed bridge comprises a beam and a beam partition, and a chamfered structure is provided at the intersection of the tower, beam and beam partition of the low-tower cable-stayed bridge, and the height of the chamfered structure is greater than 1 / 3 of the height of the box chamber of the cable-stayed bridge.

[0014] The beneficial effects of the utility model are:

[0015] The utility model makes the transition of the bridge tower of the low-tower cable-stayed bridge from a single-column section to a double-limb bridge pier inside the box girder. The difference between this structure and the conventional herringbone bridge tower is that the bridge tower exposed above the bridge deck is an integral section, and no herringbone bifurcated structure is provided. This structure is relatively simple, with only one integral tower column, and the construction template is convenient to set up.

[0016] 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 embodiments of the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a structural schematic diagram of a low-tower cable-stayed bridge tower;

[0019] Figure 2 It is a structural diagram of a cable-stayed bridge at the pier transition;

[0020] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 4 This is a force diagram of a cable-stayed bridge.

[0022] Markings in the figure: 1. Tower of a low-tower cable-stayed bridge; 11. Vertical steel column; 12. Oblique steel column; 13. Horizontal steel; 14. Concrete; 21. Wire-branch saddle; 211. Reinforcing rib; 212. Wire-branch; 213. Tower end anchor plate; 22. Surrounding steel bars; 23. Pressure-bearing steel mesh; 3. Beam partition; 4. Beam; 5. Pier; 6. Chamfered structure. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0024] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present utility model, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] Embodiment 1:

[0026] like Figure 1 As shown, the present embodiment provides a low-tower cable-stayed bridge tower 1, which includes a tower frame and concrete 14. The tower frame includes at least two vertical steel columns 11, two oblique steel columns 12 and at least one horizontal steel 13. All vertical steel columns 11 are vertically arranged and are formed into columns by horizontal steels 13 sleeved on the vertical steel columns 11. It should be noted that forming a column into a square column by using steel bars is a prior art and is no longer described in detail in this application. One end of each oblique steel column 12 is connected to the columnar structure formed by the vertical steel columns 11, and the other end of each oblique steel column 12 is used to be connected to the beam 4 of the bridge; the concrete 14 wraps the tower frame.

[0027] Since the cable-stayed bridge towers in the prior art need to withstand huge vertical forces, how to transfer the vertical forces to the two piers in a simple and effective manner is a difficult problem faced in the design of similar bridges. In the present application, by changing the structure of the short-tower cable-stayed bridge tower 1, the single-column section of the short-tower cable-stayed bridge tower 1 is transitioned to the double-limb bridge pier 5 inside the box girder. The difference between this structure and the conventional herringbone bridge tower is that the bridge tower exposed above the bridge deck is an integral section, and there is no herringbone bifurcated structure. This structure is relatively simple, with only one integral tower column, and it is convenient to set up the construction template. In addition, the cross-section is large, and the construction space for personnel is large during the construction process, and the operation is flexible. At the same time, the integral structure has a relatively large cross-section and reliable force, which increases the structural bearing capacity, especially under special conditions such as earthquake force, and the bifurcated position of the herringbone bridge tower is its weak link in force, so the application is more solid than the prior art.

[0028] Further, see Figure 2 , in this application, it also includes a wire tube saddle 21 and surrounding steel bars 22. The wire tube saddle 21 is arranged on the tower 1 of the low-tower cable-stayed bridge. The surrounding steel bars 22 are spirally arranged, and the surrounding steel bars 22 are arranged around the outside of the wire tube saddle 21. Specifically, in this application, the wire tube saddle 21 is arranged between the middle and the end of the tower 1 of the low-tower cable-stayed bridge. Its specific setting position is determined by the construction environment, so no specific restrictions are made in this application. In this application, a circle of surrounding steel bars 22 is arranged around the outside of the wire tube saddle 21 to assist the wire tube saddle 21 in bearing vertical loads.

[0029] Also, see Figure 2 The figure shows that the present application also includes at least one layer of pressure-bearing steel mesh 23, and each layer of pressure-bearing steel mesh 23 is arranged below the wire tube saddle 21 near the beam 4. Specifically, three layers can be arranged as shown in the figure, and the number can also be modified according to actual needs. The above arrangement can effectively enhance the local pressure-bearing capacity of the bridge tower and avoid cracking.

[0030] Specifically, see Figure 3 In the present application, the wire-dividing tube saddle 21 includes at least one wire-dividing tube 212 and two tower-end anchor pads 213. The two tower-end anchor pads 213 are respectively arranged at the two ends of the wire-dividing tube 212. The tower-end anchor pads 213 are arranged on the side walls of the tower 1 of the low-tower cable-stayed bridge. Reinforcing ribs 211 are arranged between the tower-end anchor pads 213 and the wire-dividing tube 212. The two tower-end anchor pads 213 are provided with the same number of through holes as the wire-dividing tube 212. Through the above-mentioned arrangement, the wire-dividing tube saddle 21 is arranged in the tower 1 of the low-tower cable-stayed bridge, and the cable passes through the wire-dividing tube saddle 21, which effectively simplifies the bridge tower structure and speeds up the construction.

[0031] At the same time, in the present application, the bottom size of the short-tower cable-stayed bridge tower 1 is larger than the size of the area where the wire saddle 21 of the short-tower cable-stayed bridge tower 1 is located. The above arrangement can effectively reduce the length of the saddle and improve economic efficiency. A groove with a depth of 20 cm (not shown in the figure) is set on the side of the short-tower cable-stayed bridge tower 1 to improve the aesthetics.

[0032] Example 2

[0033] This embodiment provides a cable-stayed bridge, in which the low-tower cable-stayed bridge tower 1 in Embodiment 1 is used.

[0034] In this embodiment, in order to effectively transmit the vertical force of the integral low-tower cable-stayed bridge tower 1 to the two piers of the cable-stayed bridge, the cable-stayed bridge includes a beam 4 and a beam partition 3, and a chamfered structure 6 is arranged at the intersection of the low-tower cable-stayed bridge tower 1, the beam 4 and the beam partition 3, and the height of the chamfered structure 6 is greater than 1 / 3 of the box height of the cable-stayed bridge.

[0035] Through the above arrangement, the box beam partition will be used inside the beam box to realize the transition from the single short-tower cable-stayed bridge tower 1 to the two piers 5. The above box structure can strengthen the transition between the tower and the pier and restrain its deformation. Compared with the herringbone bridge tower that forks in the air without additional constraints, this application can significantly improve the bearing capacity. See also Figure 4 The above design also uses a larger chamfered structure to effectively transfer the vertical force to the two piers, avoiding the risk of cracking of the beam 4 due to the large bending moment of the cable-stayed bridge section 4.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0037] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A low-tower cable-stayed bridge tower, characterized in that: include: A bridge tower frame and concrete (14), wherein the bridge tower frame comprises at least two vertical steel columns (11), two oblique steel columns (12) and at least one horizontal steel (13), all of the columns are connected by the horizontal steel (13) to form a columnar structure, one end of each oblique steel column (12) is connected to the columnar structure formed by the vertical steel columns (11), and the other end of each oblique steel column (12) is used to be connected to a beam (4) of a bridge; the concrete (14) is wrapped around the bridge tower frame.

2. The low-tower cable-stayed bridge tower according to claim 1, characterized in that: include: A wire-dividing tube saddle (21) and a surrounding steel bar (22), wherein the wire-dividing tube saddle (21) is arranged on a tower (1) of a low-tower cable-stayed bridge, and the surrounding steel bar (22) is arranged in a spiral shape, and the surrounding steel bar (22) is arranged around the outside of the wire-dividing tube saddle (21).

3. The low-tower cable-stayed bridge tower according to claim 2, characterized in that: include: At least one layer of pressure-bearing steel mesh (23), each layer of the pressure-bearing steel mesh (23) is arranged below the wire-dividing tube saddle (21) close to the beam portion (4).

4. The low-tower cable-stayed bridge tower according to claim 2, characterized in that: The wire-dividing tube saddle (21) comprises at least one wire-dividing tube (212) and two tower-end anchor pads (213), wherein the two tower-end anchor pads (213) are respectively arranged at two ends of the wire-dividing tube (212), and the tower-end anchor pads (213) are arranged on the side walls of the towers (1) of the low-tower cable-stayed bridge.

5. The low-tower cable-stayed bridge tower according to claim 4, characterized in that: A reinforcing rib (211) is provided between the tower end anchor plate (213) and the wire distribution tube (212).

6. The low-tower cable-stayed bridge tower according to claim 4, characterized in that: The two tower end anchor pads (213) are each provided with through holes having the same number as the wire distribution tube (212).

7. The low-tower cable-stayed bridge tower according to claim 2, characterized in that: The tower base size of the short-tower cable-stayed bridge tower (1) is larger than the size of the area where the wire distribution tube saddle (21) of the short-tower cable-stayed bridge tower (1) is located.

8. The low-tower cable-stayed bridge tower according to claim 1, characterized in that: A groove with a depth of 20 cm is arranged on the side of the bridge tower (1) of the low-tower cable-stayed bridge.

9. A cable-stayed bridge, characterized in that: The short-tower cable-stayed bridge tower (1) as claimed in claim 1 is used.

10. The cable-stayed bridge according to claim 9, characterized in that: The cable-stayed bridge comprises a beam (4) and a beam partition (3), and a chamfered structure (6) is provided at the intersection of the tower (1) of the low-tower cable-stayed bridge, the beam (4) and the beam partition (3), and the height of the chamfered structure (6) is greater than 1 / 3 of the height of the box chamber of the cable-stayed bridge.

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