Steel combined beam frame of water trestle

Abstract

The utility model discloses an underwater trestle steel combined beam frame, which relates to the technical field of building bridges and comprises a plurality of steel pipe piles, two connecting transverse plates are jointly mounted between the adjacent steel pipe piles, two connecting inclined plates are mounted between the two connecting transverse plates, circular steel pipes are mounted in the connecting inclined plates, and the circular steel pipes are connected with the connecting inclined plates. Four twisted steel bars are welded and installed between the outer surface of the circular steel pipe and the inner wall of the connecting inclined plate in an array mode, a triangular reinforcing steel plate is welded to each of the four corners in the connecting inclined plate, and the two ends of the circular steel pipe and the two ends of the twisted steel bars are connected with the connecting inclined plate in a welded mode. The round steel pipe plays a role in supporting the four external threaded steel pipes and the connecting inclined plate from inside to outside, so that the stability of the connecting inclined plate is enhanced, the strength of the connecting inclined plate can be improved to a greater extent, the connecting inclined plate can better bear transverse and longitudinal pressure, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of building bridges, in particular to a steel composite beam frame for underwater trestle bridges. Background Art

[0002] A bridge refers to a structure built to cross natural or artificial obstacles. It is built across rivers, lakes, and seas to allow vehicles, pedestrians, etc. to pass smoothly.

[0003] Existing short-distance bridges built on rivers are generally built with truss structures. The lower structure includes spiral tubes, connecting steel plates, and distribution beams, and the upper structure includes Bailey beams, distribution beams, bridge decks, and guardrails. The connecting channel steels in the lower structure are divided into transverse and oblique support plates. Among them, the oblique support plates need to bear transverse and longitudinal pressures in daily use, and there will be large gaps at the welding points of the transverse and oblique support steel plates, which need to be filled by cutting steel plates. During long-term use, the gaps are prone to oxidation and rust, affecting the use effect. Utility Model Content

[0004] The utility model aims to provide a steel composite beam frame for an underwater trestle to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite steel beam frame of an underwater pier, comprising a plurality of steel pipe piles, two connecting transverse plates are installed between adjacent steel pipe piles, two connecting inclined plates are installed between two connecting transverse plates, circular steel pipes are installed inside the connecting inclined plates, four threaded steel bars are welded in an array between the outer surface of the circular steel pipe and the inner wall of the connecting inclined plates, a triangular reinforcing steel plate is welded at each of the four inner corners of the connecting inclined plates, and both ends of the circular steel pipe and the threaded steel bar are welded to the connecting inclined plates.

[0006] Preferably, pile heads are installed on the upper ends of the plurality of steel pipe piles, a first distribution beam is installed on the upper ends of the plurality of pile heads, a plurality of Bailey beams are installed on the upper ends of the first distribution beam, a second distribution beam is installed on the upper ends of the plurality of Bailey beams, and a bridge deck is installed on the upper ends of the second distribution beam.

[0007] Preferably, a notch is provided at the connection between the connecting inclined plate and the connecting transverse plate, and a steel plate is welded inside the notch.

[0008] Preferably, an arc-shaped protective steel plate is installed on the surface of the steel pipe pile, and two extension steel plates are symmetrically installed at the opening of the arc-shaped protective steel plate. The two extension steel plates are respectively welded to cover the front and rear ends of the connecting inclined plate.

[0009] Preferably, the surface of the extension steel plate is threadedly connected with a plurality of bolts, and the plurality of bolts respectively penetrate the extension steel plate and penetrate into the interior of the connecting inclined plate and the connecting transverse plate.

[0010] Preferably, the connecting inclined plate comprises a first channel steel and a second channel steel, and the first channel steel and the second channel steel are connected by groove-to-groove welding.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The steel composite beam frame of the underwater trestle bridge is manufactured by welding two connecting transverse plates between two steel pipe piles, welding four threaded steel bars to the four inner wall connections of the connecting inclined plate, welding a circular steel pipe to the inside of the four threaded steel bars, and finally welding four reinforcing steel plates to the inside of the connecting inclined plate. Finally, the welded connecting inclined plate is welded between the two connecting transverse plates. The circular steel pipe supports the four external threaded steel pipes and the connecting inclined plate from the inside to the outside, thereby enhancing the stability of the connecting inclined plate and providing greater strength to the connecting inclined plate, so as to better withstand lateral and longitudinal pressures and increase service life.

[0013] 2. The underwater trestle steel composite beam frame can protect the connecting inclined plates and the connecting transverse plates by arranging arc-shaped protective steel plates and extension steel plates installed on the outside of the connecting inclined plates and the connecting transverse plates, and can also slow down the degree of oxidation at the notches. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the planar structure of the overall structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model connecting the inclined plates;

[0017] Figure 4 For this utility model Figure 2 A is an enlarged view of the structure;

[0018] Figure 5 It is a structural schematic diagram of the arc-shaped protective steel plate of the utility model.

[0019] In the figure: 1. Steel pipe pile; 2. Connecting inclined plate; 201. First channel steel; 202. Second channel steel; 3. Connecting cross plate; 4. Pile head; 5. Bailey beam; 6. First distribution beam; 7. Second distribution beam; 8. Bridge deck; 9. Round steel pipe; 10. Threaded steel bar; 11. Reinforcement steel plate; 12. Notch; 13. Arc protection steel plate; 14. Bolt; 15. Extension steel plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figures 1 to 5 As shown, the steel composite beam frame of the underwater trestle in this embodiment includes a plurality of steel pipe piles 1, a brake pier is installed at the bottom of the steel pipe pile 1, and the brake pier is installed underground. It is a prior art. The steel pipe pile 1 adopts a Φ630 spiral pipe steel pipe pile 1, and two connecting transverse plates 3 are installed between adjacent steel pipe piles 1. The two ends of the connecting transverse plates 3 are respectively welded to the surfaces of the two steel pipe piles 1. The connecting transverse plates 3 are welded by two channel steels. Two connecting inclined plates 2 are installed between the two connecting transverse plates 3. The two ends of the connecting inclined plates 2 are respectively welded to the surfaces of the two connecting transverse plates 3. A circular steel pipe 9 is installed inside the connecting inclined plate 2. Four threaded steel bars 10 are welded and installed in an array between the outer surface of the circular steel pipe 9 and the inner wall of the connecting inclined plate 2, as shown in FIG. Figure 2As shown, the circular steel pipe 9 is located at the center of the connecting inclined plate 2. The circular steel pipe 9 and the connecting inclined plate 2 are welded together by four threaded steel bars 10. A triangular reinforcing steel plate 11 is welded to the four internal corners of the connecting inclined plate 2. The ends of the circular steel pipe 9 and the threaded steel bar 10 are welded to the connecting inclined plate 2. The circular steel pipe 9 supports the four external threaded steel pipes and the connecting inclined plate 2 from the inside to the outside, so that the stability of the connecting inclined plate 2 is enhanced, and the strength of the connecting inclined plate 2 can be provided to a greater extent, so as to better withstand the lateral and longitudinal pressures and increase the service life. The four reinforcing steel plates 11 can enhance the internal structural strength of the connecting inclined plate 2. It should be noted that the welding adopts carbon dioxide gas shielded welding. In order to prevent the deformation of the broken pile when the steel pipe pile 1 is pulled out, it is generally necessary to weld steel plates at the weld seam at no less than three locations.

[0024] Specifically, a pile head 4 is installed on the upper end of the plurality of steel pipe piles 1, a first distribution beam 6 is installed on the upper end of the plurality of pile heads 4, a plurality of Bailey beams 5 are installed on the upper end of the first distribution beam 6, a second distribution beam 7 is installed on the upper end of the plurality of Bailey beams 5, a bridge deck 8 is installed on the upper end of the second distribution beam 7, the first distribution beam 6 adopts an I45 distribution beam, and the second distribution beam 7 adopts an I25 I-beam distribution beam, wherein the pile head 4, the Bailey beam 5, the bridge deck 8, the first distribution beam 6 and the second distribution beam 7 are all prior art.

[0025] Furthermore, a notch 12 is provided at the connection between the connecting inclined plate 2 and the connecting horizontal plate 3, and a steel plate is welded inside the notch 12. The notch 12 can be filled by welding a steel plate of the same size as the notch 12. It should be noted that the welding adopts carbon dioxide gas shielded welding. In order to prevent the steel pipe pile 1 from breaking and deforming when it is pulled out, it is generally necessary to weld steel plates at no less than three locations at the weld.

[0026] Furthermore, an arc-shaped protective steel plate 13 is installed on the surface of the steel pipe pile 1, and two extended steel plates 15 are symmetrically installed at the opening of the arc-shaped protective steel plate 13. The two extended steel plates 15 are respectively welded to cover the front and rear ends of the connecting inclined plate 2. The arc-shaped protective steel plate 13 is welded and connected to the surface of the steel pipe pile 1, and the inner sides of the two extended steel plates 15 are respectively welded and connected to the front and rear ends of the connecting inclined plate 2. The arc-shaped protective steel plate 13 and the extended steel plate 15 can cover the notch 12 and the welding points connecting the inclined plate 2 and the connecting cross plate 3, thereby reducing the impact of the external environment on the notch 12, slowing down the oxidation length, and thereby increasing the service life of the structure.

[0027] Furthermore, the surface of the extended steel plate 15 is threadedly connected with a plurality of bolts 14, and the plurality of bolts 14 respectively penetrate the extended steel plate 15 and penetrate deep into the interior of the connecting inclined plate 2 and the connecting cross plate 3. By having the plurality of bolts 14 penetrate the extended steel plate 15 and the connecting inclined plate 2, the connection strength between the extended steel plate 15 and the connecting inclined plate 2 can be enhanced.

[0028] Furthermore, the connecting inclined plate 2 includes a first channel steel 201 and a second channel steel 202. The first channel steel 201 and the second channel steel 202 are connected by groove-to-groove welding. Through the groove-to-groove welding, the first channel steel 201 and the second channel steel 202 can be combined to form a U-shaped connecting inclined plate 2, so that the connection points between the connecting inclined plate 2 and the connecting cross plate 3 are increased, thereby enhancing the strength of the connecting inclined plate 2 and the connecting cross plate 3 after welding.

[0029] The method of using this embodiment is: by welding two connecting cross plates 3 between two steel pipe piles 1, then welding four threaded steel bars 10 to the four inner wall connections of the connecting inclined plate 2, welding the circular steel pipe 9 to the inside of the four threaded steel bars 10, and finally welding four reinforcing steel plates 11 to the inside of the connecting inclined plate 2, and finally welding the welded connecting inclined plate 2 between the two connecting cross plates 3, the circular steel pipe 9 supports the four external threaded steel pipes and the connecting inclined plate 2 from the inside to the outside.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. 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.

Claims

1. A steel composite beam frame for an underwater trestle, comprising a plurality of steel pipe piles (1), characterized in that: Two connecting transverse plates (3) are installed between adjacent steel pipe piles (1), two connecting oblique plates (2) are installed between the two connecting transverse plates (3), a circular steel pipe (9) is installed inside the connecting oblique plate (2), four threaded steel bars (10) are welded in an array between the outer surface of the circular steel pipe (9) and the inner wall of the connecting oblique plate (2), a triangular reinforcing steel plate (11) is welded to the four corners inside the connecting oblique plate (2), and both ends of the circular steel pipe (9) and the threaded steel bar (10) are welded to the connecting oblique plate (2).

2. The underwater trestle steel composite beam frame according to claim 1 is characterized in that: A pile head (4) is installed at the upper end of the plurality of steel pipe piles (1), a first distribution beam (6) is installed at the upper end of the plurality of pile heads (4), a plurality of Bailey beams (5) are installed at the upper end of the first distribution beam (6), a second distribution beam (7) is installed at the upper end of the plurality of Bailey beams (5), and a bridge deck (8) is installed at the upper end of the second distribution beam (7).

3. The underwater trestle steel composite beam frame according to claim 1 is characterized in that: A notch (12) is provided at the connection between the connecting inclined plate (2) and the connecting transverse plate (3), and a steel plate is welded inside the notch (12).

4. The underwater trestle steel composite beam frame according to claim 3 is characterized in that: The surface of the steel pipe pile (1) is installed with an arc-shaped protective steel plate (13), and two extension steel plates (15) are symmetrically installed at the opening of the arc-shaped protective steel plate (13). The two extension steel plates (15) are respectively welded to cover the front and rear ends of the connecting inclined plate (2).

5. The underwater trestle steel composite beam frame according to claim 4 is characterized in that: The surface of the extension steel plate (15) is threadedly connected with a plurality of bolts (14), and the plurality of bolts (14) respectively penetrate the extension steel plate (15) and penetrate into the interior of the connecting inclined plate (2) and the connecting transverse plate (3).

6. The underwater trestle steel composite beam frame according to claim 1 is characterized in that: The connecting inclined plate (2) comprises a first channel steel (201) and a second channel steel (202), wherein the first channel steel (201) and the second channel steel (202) are connected by groove-to-groove welding.

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