Rectangular box girder continuous rigid frame upward supporting track beam structure

Abstract

The utility model provides a rectangular box girder continuous rigid frame upward-supporting track beam structure, which relates to the technical field of bridges and comprises a continuous rigid frame and a pier. The continuous rigid frame comprises a track beam and a box beam, the upper surface of the box beam is connected with the track beam, and the cross section of the box beam is in a hollow rectangular shape. The pier comprises a pier column and a cover beam connected with the upper surface of the pier column, the pier is a T-shaped pier, the cross section of the pier column is in a hollow rectangular shape, and the upper surface of the cover beam is connected with the bottom face of the box girder. Compared with a traditional box-type section continuous beam upward-supporting track beam structure, the continuous rigid frame upward-supporting track beam structure is light and attractive in appearance; compared with a continuous steel-concrete combined track beam, the track beam is lower in manufacturing cost and convenient to repair and maintain. And the application space is wide, and a new thought is provided for the large-span node bridge structure form of the straddle type monorail traffic system.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, in particular to a rectangular box beam continuous rigid frame upper supporting track beam structure. Background Art

[0002] As an urban rail transit system, straddle-type monorail transportation generally runs along the middle or side of urban roads in the form of elevated bridges. Therefore, straddle-type monorail transportation systems need to frequently cross roads and intersections. When the required span of the obstacle to be crossed is within 30m, standard PC rail beams with different spans are selected according to the curve radius; when the required span is greater than 30m, simply supported steel-concrete combined rail beams and continuous steel-concrete combined rail beams are often selected to cross the obstacle. Although the steel-concrete combined rail beam has a small structural height and is easy to construct, its cost is higher than that of the concrete structure, and the subsequent maintenance investment is large. Utility Model Content

[0003] The purpose of the utility model is to provide a rectangular box beam continuous rigid frame upper support rail beam structure to solve the above problems. In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0004] The present application provides a track beam structure supported by a rectangular box beam continuous rigid frame, comprising: a continuous rigid frame and a bridge pier. The continuous rigid frame comprises a track beam and a box beam, the upper surface of the box beam is connected to the track beam, and the cross-sectional shape of the box beam is a hollow rectangle. The bridge pier comprises a pier column and a cap beam connected to the upper surface of the pier column, the bridge pier is a T-shaped bridge pier, the cross-sectional shape of the pier column is a hollow rectangle, and the upper surface of the cap beam is connected to the bottom surface of the box beam.

[0005] Furthermore, the track beam and the box beam are connected via a cast-in-place section.

[0006] Furthermore, the track beam is provided with breaks every 20m-25m.

[0007] Furthermore, a groove with an inverted triangle cross section is provided at the center line of the upper surface of the cap beam.

[0008] Furthermore, the track beam is a precast concrete structure, and the box beam is a cast-in-place concrete structure.

[0009] Furthermore, the continuous rigid frame is a three-span one-unit structure.

[0010] Furthermore, the box beam is a variable height connection structure, the lower surface of the box beam is an arc-shaped surface, and the height of the connection between the box beam and the cap beam is the highest.

[0011] Furthermore, the bridge pier is arranged on a pier foundation, and the bottom surface of the bridge pier is connected to the upper surface of the pier foundation.

[0012] Furthermore, the pier foundation is fixed on the foundation by four bored piles.

[0013] The beneficial effects of the utility model are:

[0014] The utility model adopts a continuous rigid frame to support the track beam structure. Compared with the traditional box-section continuous beam to support the track beam structure, the structure is light and beautiful; compared with the continuous steel-concrete combined track beam, the cost is lower and the maintenance is convenient. It has a wide range of applications and provides a new idea for the large-span node bridge structure of the straddle-type monorail transportation system.

[0015] 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 achieved and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 This is the front view of the structure of the utility model;

[0018] Figure 2 It is a side view of the structure of the utility model.

[0019] Markings in the figure: 1. Box girder; 2. Track beam; 3. Cast-in-place section; 4. Cap beam; 5. Pier column; 6. Fracture; 7. Pier foundation; 8. Bored pile; 9. Recess. DETAILED DESCRIPTION

[0020] 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, not all of 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.

[0021] 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 the 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.

[0022] like Figure 1 and Figure 2 As shown, this embodiment provides a track beam structure supported by a rectangular box beam continuous rigid frame, including: a continuous rigid frame and a bridge pier. The continuous rigid frame includes a track beam 2 and a box beam 1. The upper surface of the box beam 1 is connected to the track beam 2, and the cross-sectional shape of the box beam 1 is a hollow rectangle. The bridge pier includes a pier column 5 and a cap beam 4 connected to the upper surface of the pier column 5. The bridge pier is a T-shaped pier. The cross-sectional shape of the pier column 5 is a hollow rectangle, and the upper surface of the cap beam 4 is connected to the bottom surface of the box beam 1. The structure proposed in this embodiment not only meets the span requirement of more than 30m when the straddle-type monorail transportation system crosses urban roads and their intersections, rivers and other obstacles, but also has safety, economy and aesthetics.

[0023] A groove 9 with an inverted triangle cross section is provided at the center line of the upper surface of the cap beam 4, which mainly serves to reduce the weight of the overall structure and improve the appearance.

[0024] The track beam 2 is a precast concrete structure, and the box beam 1 is a cast-in-place concrete structure. The track beam 2 and the box beam 1 are connected by a cast-in-place section 3. Compared with the steel-concrete structure, it is low in cost and easy to maintain.

[0025] The continuous rigid frame is a three-span one-unit structure, and the main span is adjusted according to the span required to cross the obstacle, generally 40m, 45m, 50m, etc. The track beam 2 is provided with a break 6 every 20m-25m.

[0026] The box beam 1 is a variable height connection structure, the lower surface of the box beam 1 is an arc-shaped curved surface, and the height of the connection between the box beam 1 and the cap beam 4 is the highest. The main function is to bear the main tensile stress caused by bending shear stress and torsional shear stress, and reduce the internal stress caused by the dead load in the mid-span section. In addition, the variable height connection structure has a sense of rhythm and increases the aesthetics.

[0027] The bridge pier is arranged on a pier foundation 7 , the bottom surface of the bridge pier is connected to the upper surface of the pier foundation 7 , and the pier foundation 7 is fixed on the foundation through four bored piles 8 .

[0028] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. 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.

[0029] The above is only a specific implementation of the utility model, but the protection scope of the utility model 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 utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A rectangular box beam continuous rigid frame upper support track beam structure, characterized in that: include: A continuous rigid frame, the continuous rigid frame comprising a track beam (2) and a box beam (1), the upper surface of the box beam (1) being connected to the track beam (2), and the cross-sectional shape of the box beam (1) being a hollow rectangle; A bridge pier, comprising a pier column (5) and a cap beam (4) connected to the upper surface of the pier column (5); the pier is a T-shaped pier; the cross-sectional shape of the pier column (5) is a hollow rectangle; and the upper surface of the cap beam (4) is connected to the bottom surface of the box beam (1).

2. The rectangular box beam continuous rigid frame upper support track beam structure according to claim 1, characterized in that: The track beam (2) and the box beam (1) are connected via a cast-in-place section (3).

3. The rectangular box beam continuous rigid frame upper support track beam structure according to claim 1, characterized in that: The track beam (2) is provided with fractures (6) every 20m-25m.

4. The rectangular box beam continuous rigid frame upper support track beam structure according to claim 1, characterized in that: A groove (9) with an inverted triangle cross section is provided at the center line of the upper surface of the cap beam (4).

5. The rectangular box beam continuous rigid frame upper support track beam structure according to claim 1, characterized in that: The track beam (2) is a prefabricated concrete structure, and the box beam (1) is a cast-in-place concrete structure.

6. The rectangular box beam continuous rigid frame upper support track beam structure according to claim 1, characterized in that: The continuous rigid frame is a three-span one-unit structure.

7. The rectangular box beam continuous rigid frame upper support track beam structure according to claim 1, characterized in that: The box beam (1) is a variable height connection structure, the lower surface of the box beam (1) is an arc-shaped curved surface, and the height of the connection between the box beam (1) and the cap beam (4) is the highest.

8. The rectangular box beam continuous rigid frame upper support track beam structure according to claim 1, characterized in that: The bridge pier is arranged on a pier foundation (7), and the bottom surface of the bridge pier is connected to the upper surface of the pier foundation (7).

9. The rectangular box beam continuous rigid frame upper supporting track beam structure according to claim 8, characterized in that: The pier foundation (7) is fixed on the foundation by four bored piles (8).

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