Novel bridge tower

Abstract

The utility model discloses a novel bridge tower which comprises steel pipes, a plurality of vertically-arranged steel pipes are arranged in a circle, adjacent steel pipes are fixedly connected, concrete is poured in the steel pipes, no concrete is poured in the area defined by the steel pipes, steel partition plates are arranged at different heights of the area defined by the steel pipes, and the peripheries of the steel partition plates are welded to the steel pipes. Compared with a concrete tower column, the self-weight of the structure is reduced by about 25% under the same bearing capacity, ancillary facilities such as common steel bars, stiff frameworks and water cooling pipes in the concrete tower column are omitted, the construction period is greatly shortened, and the assembly and standardization degrees are high. The utility model has important significance for improving the construction quality of the bridge tower of the cable bridge and saving the construction cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge structures, and specifically discloses a novel bridge tower which is suitable for tower columns of large-span suspension bridges and cable-stayed bridges in mountainous areas. Background Art

[0002] Cable bridges use cables to bear most of the bridge deck loads, and the cable body can fully utilize the high tensile performance of high-strength materials, making cable bridges the main type of long-span bridges in the world. As the main load-bearing component of a cable bridge, the bridge tower bears all the pressure transmitted by the cables and the self-weight load of the bridge tower structure. Considering the economic efficiency of the structure, the tower column is basically made of concrete. Therefore, a larger cross-sectional size and wall thickness are often required to resist the pressure of the tower column, which leads to a large self-weight and foundation scale of the tower column. Especially for super-high bridge towers, the weight of the tower column concrete itself far exceeds the pressure transmitted by the load on the top of the tower.

[0003] For mountainous areas with poor geological conditions, it is not easy to impose excessive additional loads on the foundation, so the adaptability of concrete bridge towers is greatly reduced. Steel bridges are also difficult to apply due to unfavorable factors such as high cost, difficult later maintenance, and limited transportation conditions in mountainous areas. In addition, bridge towers are typical eccentrically compressed components. Based on the stability and bearing capacity control conditions, the bending moment of inertia I should be increased as much as possible while ensuring that the area A remains unchanged, so as to ensure that the cross-section has a large radius of gyration i and reduce the slenderness ratio of the component.

[0004] Therefore, it is necessary to study a new type of bridge tower suitable for cable bridge towers that has reasonable force and is easy to construct and install. Utility Model Content

[0005] The purpose of the utility model is to provide a new type of bridge tower in view of the above problems existing in the prior art, so as to solve the problems of heavy weight and long construction period of the concrete bridge tower structure of the previous cable bridge, save engineering costs and shorten the construction period.

[0006] The above-mentioned purpose of the utility model is achieved by the following technical means:

[0007] A new type of bridge tower includes a steel pipe. A plurality of vertically arranged steel pipes are arranged in a circle. Adjacent steel pipes are fixedly connected. Concrete is poured inside the steel pipes. No concrete is poured in the area surrounded by the steel pipes. Steel partitions are arranged at different heights in the area surrounded by the steel pipes. The steel partitions are welded to the steel pipes on all sides.

[0008] As mentioned above, steel partition stiffeners are welded on the steel partition, and the two ends of the steel partition stiffeners are not connected to the steel pipe.

[0009] As mentioned above, there are multiple steel diaphragm stiffeners welded on the steel diaphragm and they are cross-arranged.

[0010] As mentioned above, a manhole is provided on the steel partition.

[0011] As mentioned above, the steel pipe comprises a plurality of steel pipe sections, and each steel pipe section is welded in sequence.

[0012] The steel pipe sections at the same height are erected and welded in parallel to form a standard segment plate. The standard segment plates at the same height form a closed loop, and the corresponding steel pipe sections of the standard segment plates at adjacent heights are welded and connected.

[0013] As mentioned above, the cross-sectional diameter of the steel pipe gradually decreases from the bottom to the top of the steel pipe.

[0014] As described above, the steel pipe includes two relatively arranged arc plates, the cross section of the arc plates is C-shaped, and the two side edges on the same side of the two wing plates of the I-beam are respectively connected to the two side edges on the same side of the two arc plates of the adjacent steel pipe; the other two side edges on the same side of the two wing plates of the I-beam are respectively connected to the two side edges on the same side of the two arc plates of another adjacent steel pipe.

[0015] As described above, the steel pipe includes two relatively arranged arc plates, the cross section of the arc plate is C-shaped, and the two connecting sides on the same side of the X-shaped connecting plate are respectively connected to the two sides on the same side of the two arc plates of the adjacent steel pipes; the two sides on the other same side of the X-shaped connecting plate are respectively connected to the two sides on the same side of the two arc plates of another adjacent steel pipe.

[0016] As shown above, the cross sections of the two arc plates of the steel pipe are located on the same distribution circle, and the distance between the centers of adjacent steel pipe cross sections is less than or equal to 3 / 4 of the diameter of the distribution circle.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model is a new type of bridge tower suitable for cable bridge towers. Compared with concrete towers, the weight of the structure is reduced by about 25% under the same bearing capacity, and ordinary steel bars, rigid skeletons, water cooling pipes and other auxiliary facilities in the concrete tower are eliminated, which greatly shortens the construction period. The new type of bridge tower has a high degree of assembly and standardization. The utility model is of great significance to improving the construction quality of cable bridge towers and saving engineering costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a steel pipe arrangement diagram on a cross section using the utility model.

[0020] Figure 2 This is an overall layout diagram of the facade using the utility model.

[0021] Figure 3 It is a schematic diagram of the steel pipe structure in Example 2;

[0022] Figure 4 It is a schematic diagram of the steel pipe structure in Example 3;

[0023] In the figure: 1-steel pipe; 2-steel partition; 3-steel partition stiffener; 4-steel pipe section; 5-standard segment plate; 6-arc plate; 7-I-beam; 8-X-type connecting plate; 9-manhole. DETAILED DESCRIPTION

[0024] In order to facilitate those skilled in the art to understand and use the present invention, the present invention is further described in detail below in conjunction with embodiments. It should be understood that the implementation examples described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0025] Embodiment 1:

[0026] A new type of bridge tower includes a steel pipe 1, a plurality of vertically arranged steel pipes 1 are arranged in a circle, adjacent steel pipes 1 are fixedly connected, concrete is poured inside the steel pipes 1, and no concrete is poured in the area surrounded by the steel pipes 1. The concrete inside the steel pipes 1 does not need to be provided with steel bars and a rigid skeleton.

[0027] Each steel pipe 1 poured with concrete forms a tower column, and the number of sides n of the cross section of the tower column is determined by the aerodynamic shape.

[0028] As a preferred solution, the number of cross-sectional sides of the tower column is n=1, 3, 4, 5, etc., wherein the number of cross-sectional sides n=1 means that the steel pipes 1 of the cross section of the tower column are distributed in a circle.

[0029] Steel partitions 2 are arranged at different heights in the area surrounded by the steel pipes 1 . The steel partitions 2 are welded to the steel pipes 1 on all sides. Steel partition stiffeners 3 are welded to the steel partitions 2 . The two ends of the steel partition stiffeners 3 are not connected to the steel pipes 1 .

[0030] Preferably, there are multiple steel partition stiffeners 3 welded on the steel partition 2 and they are cross-arranged to improve the local stability of each steel pipe 1.

[0031] A manhole 9 is provided on the steel partition plate 2 to facilitate the internal maintenance of the bridge tower.

[0032] The steel pipe 1 and the steel partition 2 can be made of low alloy or structural steel for bridges, and the steel pipe 1 is filled with conventional or high-strength concrete. The steel partition 2 has a certain thickness.

[0033] The steel pipe 1 is welded together with a plurality of steel pipe sections 4 .

[0034] As a preferred solution, the steel pipe segments 4 at the same height are erected and welded in parallel to form a standard segment plate 5, and the steel partition plate 2 is welded on the inner side of the standard segment plate 5. The standard segment plates 5 at the same height form a closed loop, and in the vertical direction, the corresponding steel pipe segments 4 of the standard segment plates at adjacent heights are welded and connected.

[0035] In the prefabrication factory, the welding and installation of each steel pipe section 4 of the standard segment are completed in sequence, the steel partition 2 is welded, prefabricated into a standard segment, and transported to the bridge site. The standard segment plates of the same height are welded to form a closed loop, and the standard segment plates of different heights are hoisted as a whole and butt-welded in sections. After the welding of each steel pipe section 4 in the vertical direction is completed, a steel pipe 1 is formed, and then concrete is poured in the steel pipe 1 until the construction of the full-height tower column of the bridge tower is completed.

[0036] As a preferred solution, the bottom cross-sectional diameter of the steel pipe 1 is larger than the top cross-sectional diameter of the steel pipe 1, and the cross-sectional diameter of the steel pipe 1 gradually decreases from the bottom to the top of the steel pipe 1. Adjusting the diameter of the steel pipe 1 can adapt to different cross-sectional size changes. For example, the cross-sectional area of ​​the bottom of the tower column is larger than the cross-sectional area of ​​the top of the tower column to better meet the engineering requirements of the high tower.

[0037] The utility model has reasonable force bearing and is convenient for manufacturing and on-site construction, and provides a new tower column of a cable bridge.

[0038] The utility model greatly improves the compressive strength of concrete, is easy to assemble and construct, effectively reduces the weight of the tower column itself, reduces the foundation scale, and saves engineering costs.

[0039] The utility model greatly improves the bearing capacity of the bridge tower column, reduces the deadweight of the tower column, eliminates the need for a large number of steel bars and rigid skeletons in traditional reinforced concrete tower columns, and solves the industry pain points of long construction period, low efficiency, and difficult to control construction quality of reinforced concrete tower columns. The application of the utility model effectively improves the level of industrialized construction and the degree of construction standardization.

[0040] Embodiment 2:

[0041] The steel pipe 1 includes two oppositely arranged arc plates 6, the cross section of the arc plates 6 is C-shaped, and the two sides of the two wing plates of the I-beam 7 on the same side are respectively connected to the two sides of the two arc plates 6 on the same side of the adjacent steel pipe 1; the other two sides of the two wing plates of the I-beam 7 on the same side are respectively connected to the two sides of the two arc plates 6 on the same side of another adjacent steel pipe 1. The two arc plates 6 and the two connected I-beams 7 form a hollow pipe for pouring concrete.

[0042] Preferably, the cross sections of the two arc plates 6 of the steel pipe 1 are located on the same distribution circle, and the distance between the centers of adjacent steel pipe cross sections is less than or equal to 3 / 4 of the diameter of the distribution circle.

[0043] The rest is consistent with Example 1.

[0044] Embodiment 3:

[0045] The steel pipe 1 includes two oppositely arranged arc plates 6, the cross section of the arc plates 6 is C-shaped, and the two connecting sides on the same side of the X-shaped connecting plate 8 (with an X-shaped cross section) are respectively connected to the two sides on the same side of the two arc plates 6 of the adjacent steel pipes 1; the two sides on the other side of the X-shaped connecting plate 8 are respectively connected to the two sides on the same side of the two arc plates 6 of another adjacent steel pipe 1. The two arc plates 6 and the two connected X-shaped connecting plates 8 form a hollow pipe for pouring concrete.

[0046] Preferably, the cross sections of the two arc plates 6 of the steel pipe 1 are located on the same distribution circle, and the distance between the centers of adjacent steel pipe cross sections is less than or equal to 3 / 4 of the diameter of the distribution circle.

[0047] The rest is consistent with Example 1.

[0048] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A new type of bridge tower, comprising a steel pipe (1), characterized in that: A plurality of vertically arranged steel pipes (1) are arranged in a circle, and adjacent steel pipes (1) are fixedly connected. Concrete is poured inside the steel pipes (1), and no concrete is poured in the area surrounded by the steel pipes (1). Steel partitions (2) are arranged at different heights in the area surrounded by the steel pipes (1), and the four sides of the steel partitions (2) are welded to each steel pipe (1).

2. A new type of bridge tower according to claim 1, characterized in that: Steel partition reinforcing ribs (3) are welded to the steel partition (2), and the two ends of the steel partition reinforcing ribs (3) are not connected to the steel pipe (1).

3. A new type of bridge tower according to claim 2, characterized in that: The steel partition plate stiffening ribs (3) welded on the steel partition plate (2) are multiple and cross-arranged.

4. According to the novel bridge tower of claim 2, it is characterized in that: A manhole (9) is provided on the steel partition plate (2).

5. According to the novel bridge tower of claim 1, it is characterized in that: The steel pipe (1) comprises a plurality of steel pipe sections (4), and each of the steel pipe sections (4) is welded in sequence.

6. A new type of bridge tower according to claim 5, characterized in that: The steel pipe sections (4) at the same height are vertically and parallelly welded to form a standard segment plate (5). The standard segment plates (5) at the same height form a closed loop. The corresponding steel pipe sections (4) of the standard segment plates at adjacent heights are welded and connected.

7. A new type of bridge tower according to claim 1, characterized in that: The cross-sectional diameter of the steel pipe (1) gradually decreases from the bottom to the top of the steel pipe (1).

8. The novel bridge tower according to claim 1 is characterized in that: The steel pipe (1) comprises two arc plates (6) arranged opposite to each other, the cross section of the arc plates (6) being C-shaped, the two side edges on the same side of the two wing plates of the I-beam (7) being respectively connected to the two side edges on the same side of the two arc plates (6) of the adjacent steel pipe (1); the other two side edges on the same side of the two wing plates of the I-beam (7) being respectively connected to the two side edges on the same side of the two arc plates (6) of another adjacent steel pipe (1).

9. The novel bridge tower according to claim 1 is characterized in that: The steel pipe (1) comprises two arc plates (6) arranged opposite to each other, the cross section of the arc plates (6) being C-shaped, the two connecting sides on the same side of the X-shaped connecting plate (8) being respectively connected to the two sides on the same side of the two arc plates (6) of the adjacent steel pipe (1); and the two sides on the other side of the X-shaped connecting plate (8) being respectively connected to the two sides on the same side of the two arc plates (6) of another adjacent steel pipe (1).

10. A new type of bridge tower according to any one of claims 8 or 9, characterized in that: The cross sections of the two arc plates (6) of the steel pipe (1) are located on the same distribution circle, and the distance between the centers of adjacent steel pipe cross sections is less than or equal to 3 / 4 of the diameter of the distribution circle.

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