Double-curved-surface large-span box type steel structure connecting bridge

Abstract

The utility model discloses a double-curved-surface large-span box type steel structure connecting bridge. The double-curved-surface large-span box type steel structure connecting bridge is characterized in that a bridge main frame comprises an arc-shaped upper beam, an arc-shaped lower beam, a plurality of upper cross beams connected with the upper beam, a plurality of lower cross beams connected with the lower beam, a plurality of vertical beams connected with the upper beam and the lower beam, inhaul cables connected with the adjacent vertical beams and supporting columns connected with the lower beam. A bridge main frame is composed of an upper beam and a lower beam which are arranged in an arc shape, the upper beam and an upper cross beam form a curved-surface-shaped upper top surface, and the lower beam and a lower cross beam form a curved-surface-shaped bottom surface, so that the upper surface and the lower surface of the whole bridge main frame form a double-curved-surface structure; the curved-surface-shaped front face and the curved-surface-shaped rear face are formed by the upper beams, the lower beams and the vertical beams, so that the front face and the rear face of the whole bridge form the double-curved-surface structures, and the whole bridge main frame is of the double-curved-surface structures from the upper portion to the lower portion or from the front portion to the rear portion. The arc-shaped curved surface structure is used for enhancing the strength, firmness, supporting performance, overload performance, strong wind resistance and other performance of the whole bridge main frame.

Description

Technical Field

[0001] The utility model relates to a steel structure bridge, in particular to a hyperbolic large-span box-type steel structure bridge. Background Art

[0002] A bridge is a building built on rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. Currently, most small-span bridges are built with straight bridge structures. In order to increase their stiffness, strength, support performance, and overload performance, an arch structure is usually set at the bottom of the bridge. In some cases with smaller spans, the arch structure at the bottom is sufficient to ensure its performance in various uses. However, in some locations with larger spans, due to the large span and the long overall length of the bridge, it is difficult to ensure that its stiffness, strength, support performance, and overload performance can meet the set requirements by simply setting an arch structure at the bottom of the bridge. For this reason, a hyperbolic large-span box-type steel structure bridge is proposed. Utility Model Content

[0003] The utility model aims to solve the above problems and proposes a hyperbolic large-span box-type steel structure bridge.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a hyperbolic large-span box-type steel structure bridge, including a bridge main frame; its characteristic is that the bridge main frame includes an upper beam and a lower beam arranged in an arc shape, a plurality of upper cross beams connecting the upper beams, a plurality of lower cross beams connecting the lower beams, a plurality of vertical beams connecting the upper beams and the lower beams, cables connecting adjacent vertical beams and pillars connected to the lower beams, the upper beams, the lower beams and the vertical beams are all box-type steel structures, the upper beams and the upper cross beams form a curved upper top surface, the upper beams, the lower beams and the vertical beams constitute a curved front and back, and the lower beams and the lower cross beams constitute a curved bottom surface.

[0005] Further preferably, a connecting plate is installed on the vertical beam, and the connecting plate is provided with connecting holes for facilitating the installation of the cable.

[0006] Further preferably, the upper beam, the lower beam and the vertical beam are provided with a connection structure which limits the installation position of the vertical beam and enhances the stability of the connection.

[0007] Further preferably, the connection structure comprises a connection sleeve installed on the upper beam and the lower beam, a plurality of positioning plates installed on the ends of the vertical beam, and a reinforcing plate for fixing the connection sleeve and the vertical beam.

[0008] Further preferably, a positioning platform protruding from the end of the vertical beam is formed by installing a plurality of positioning plates in the end of the vertical beam.

[0009] Further preferably, the upper crossbeam and the lower crossbeam both adopt I-shaped steel structure.

[0010] The beneficial effects of the utility model are as follows: the main frame of the bridge is composed of an upper beam and a lower beam arranged in an arc shape, the upper beam and the upper cross beam form a curved upper top surface, and the lower beam and the lower cross beam form a curved bottom surface, so that the upper and lower surfaces of the entire main frame of the bridge form a hyperbolic structure; the upper beam, the lower beam and the vertical beam form a curved front and rear surface, so that the front and rear surfaces of the entire bridge also form a hyperbolic structure, so that the entire main frame of the bridge is a hyperbolic structure whether from the top and bottom or from the front and back, and the arc-shaped curved surface structure is used to enhance the strength, firmness, support performance, overload performance and other performances such as strong wind resistance of the entire main frame of the bridge;

[0011] The connection structure is provided to facilitate the installation of the vertical beams, limit the installation position of the vertical beams and strengthen the connection firmness between the vertical beams and the upper beams and the lower beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0013] Attached Figure 2 It is another perspective structural schematic diagram of the utility model;

[0014] Attached Figure 3 It is another perspective structural schematic diagram of the utility model;

[0015] Attached Figure 4 It is a partial enlarged structural schematic diagram of the utility model;

[0016] Attached Figure 5 It is a structural schematic diagram of one end when the vertical beam in the utility model adopts square box steel.

[0017] Legend: 1. Main frame of bridge; 2. Upper beam; 3. Lower beam; 4. Upper crossbeam; 5. Lower crossbeam; 6. Cable; 7. Connecting plate; 71. Connecting hole; 8. Connecting sleeve; 9. Positioning plate; 10. Reinforcement plate; 11. Positioning platform; 12. Vertical beam; 13. Pillar. DETAILED DESCRIPTION

[0018] Hereinafter, we will further explain the hyperbolic large-span box-type steel structure bridge described in the utility model in conjunction with the accompanying drawings.

[0019] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the utility model are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0020] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. should be understood in a broad sense; for example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1-5 As shown in, a hyperbolic large-span box-type steel structure bridge comprises a bridge main frame 1; the main frame 1 comprises an upper beam 2 and a lower beam 3 arranged in an arc shape, a plurality of upper cross beams 4 connecting the upper beam 2, a plurality of lower cross beams 5 connecting the lower beam 3, a plurality of vertical beams 12 connecting the upper beam 2 and the lower beam 3, a cable 6 connecting adjacent vertical beams 12 and a support column 13 connected to the lower beam 3, the upper beam 2, the lower beam 3 and the vertical beam 12 are all box-type steel structures, the upper beam 2 and the upper cross beam 4 form a curved upper top surface, the upper beam 2, the lower beam 3 and the vertical beam 12 form a curved front and rear surface, and the lower beam 3 and the lower cross beam 5 form a curved bottom surface;

[0022] The main frame 1 of the bridge is composed of an upper beam 2 and a lower beam 3 which are arranged in an arc shape. The upper top surface is formed by the upper beam 2 and the upper cross beam 4, and the lower bottom surface is formed by the lower beam 3 and the lower cross beam 5, so that the upper and lower surfaces of the whole main frame 1 form a hyperbolic structure; the front and back surfaces of the whole bridge are formed by the upper beam 2, the lower beam 3 and the vertical beam 12, so that the front and back surfaces of the whole bridge also form a hyperbolic structure, so that the whole main frame 1 of the bridge is a hyperbolic structure whether from the top and bottom or from the front and back, and the arc-shaped curved surface structure is used to enhance the strength, firmness and other properties of the whole main frame 1 of the bridge.

[0023] In one embodiment, the vertical beam 12 is provided with a connecting plate 7, and the connecting plate 7 is provided with a connecting hole 71 for installing the cable 6; the setting of the connecting plate 7 and the connecting hole 71 facilitates the installation of the connecting cable 6, and the setting of the cable 6 is used to enhance the load-bearing and connection stability; one end of the cable 6 is connected to the connecting plate 7 at the bottom of the vertical beam 12, and the other end is connected to the connecting plate 7 at the top of the adjacent vertical beam 12.

[0024] In one embodiment, the upper beam 2, the lower beam 3 and the vertical beam 12 are provided with a connection structure which limits the installation position of the vertical beam 12 and enhances the stability of the connection;

[0025] The connection structure comprises a connection sleeve 8 installed on the upper beam 2 and the lower beam 3, a plurality of positioning plates 9 installed on the ends of the vertical beam 12, and a reinforcing plate 10 for fixing the connection sleeve 8 and the vertical beam 12;

[0026] A plurality of positioning plates 9 are installed in the end of the vertical beam 12 to form a positioning platform 11 protruding from the end of the vertical beam 12;

[0027] By setting a plurality of positioning plates 9, the positioning plates 9 are installed in the end of the vertical beam 12 by welding and partially protrude from the end of the vertical beam 12. A positioning platform 11 is formed by the plurality of positioning plates 9. When connecting, the positioning platform 11 is inserted into the connecting sleeve 8, thereby limiting the installation position of the vertical beam 12. Then, the vertical beam 12 and the connecting sleeve 8 are fixedly connected by the reinforcing plate 10, thereby further enhancing the installation firmness of the vertical beam 12.

[0028] In one embodiment, the upper cross beam 4 and the lower cross beam 5 are both made of I-shaped steel structures, and the upper cross beam 4 is fixedly connected to the upper beam 2 by welding, and the lower cross beam 5 is fixedly connected to the lower beam 3 by welding.

[0029] When installing the vertical beam in the utility model: first, the connecting sleeve 8 is installed on the upper beam 2 and the lower beam 3 by welding, and then four positioning plates 9 are welded at both ends of the vertical beam 12 respectively. When welding, one end of the positioning plate 9 extends into the vertical beam 12, and the other end protrudes from the end of the vertical beam 12. A positioning platform 11 is formed by the four positioning plates 9. When the vertical beam 12 is connected with the connecting sleeve 8, the positioning platform 11 is inserted into the connecting sleeve 8 until the end of the vertical beam 12 contacts the end of the connecting sleeve 8, and then the connection is welded. After the welding is completed, a number of reinforcing plates 10 are installed on the vertical beam 12 and the connecting sleeve 8 by welding to strengthen the connection firmness between the vertical beam 12 and the connecting sleeve 8.

[0030] The protection scope of the present utility model is not limited to the above embodiments and their variations. Conventional modifications and replacements made by those skilled in the art based on the contents of this embodiment all fall within the protection scope of the present utility model.

Claims

1. A hyperbolic long-span box-type steel structure bridge, comprising a bridge main frame (1); wherein: The main frame (1) of the bridge comprises an upper beam (2) and a lower beam (3) arranged in an arc shape, a plurality of upper cross beams (4) connecting the upper beam (2), a plurality of lower cross beams (5) connecting the lower beam (3), a plurality of vertical beams (12) connecting the upper beam (2) and the lower beam (3), a cable (6) connecting adjacent vertical beams (12), and a support column (13) connected to the lower beam (3); the upper beam (2), the lower beam (3) and the vertical beam (12) are all box-type steel structures; the upper beam (2) and the upper cross beam (4) form a curved upper top surface; the upper beam (2), the lower beam (3) and the vertical beam (12) form a curved front and rear surface; and the lower beam (3) and the lower cross beam (5) form a curved bottom surface.

2. The hyperbolic large-span box-type steel structure bridge according to claim 1, characterized in that: A connecting plate (7) is mounted on the vertical beam (12), and a connecting hole (71) is provided on the connecting plate (7) for facilitating installation of the cable (6).

3. The hyperbolic large-span box-type steel structure bridge according to claim 1, characterized in that: The upper beam (2), the lower beam (3) and the vertical beam (12) are provided with a connection structure which limits the installation position of the vertical beam (12) and enhances the stability of the connection.

4. The hyperbolic large-span box-type steel structure bridge according to claim 3 is characterized by: The connection structure comprises a connection sleeve (8) installed on the upper beam (2) and the lower beam (3), a plurality of positioning plates (9) installed at the end of the vertical beam (12), and a reinforcing plate (10) for fixing the connection sleeve (8) and the vertical beam (12).

5. The hyperbolic large-span box-type steel structure bridge according to claim 4 is characterized by: A plurality of positioning plates (9) are installed in the end of the vertical beam (12) to form a positioning platform (11) protruding from the end of the vertical beam (12).

6. The hyperbolic large-span box-type steel structure bridge according to claim 1 is characterized by: The upper crossbeam (4) and the lower crossbeam (5) both adopt I-shaped steel structures.

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