Steel plate girder bridge suitable for pipeline overhead

Abstract

The utility model belongs to the field of bridge construction, and provides a steel plate girder bridge suitable for pipeline overhead, which comprises a pipeline, a steel grating plate and two I-shaped main beams, a plurality of cross beams are arranged between the two main beam top plates and between the two main beam bottom plates, the cross beams between the two main beam top plates jointly form an upper layer supporting structure, the steel grating plate is installed on the upper layer supporting structure, the cross beams between the two main beam bottom plates jointly form a lower layer supporting structure, and the steel grating plate is installed on the lower layer supporting structure. The pipeline is mounted on the lower-layer supporting structure; the bridge structure further comprises a cover beam and a pile foundation, the cover beam is fixed to the top end of the pile foundation, two support cushion stones are arranged at the top end of the cover beam, and the two main beams are installed on the two support cushion stones respectively. In the beam bridge, the I-shaped steel plate beams are adopted as the main beams, the spanning capacity of the beam bridge can be effectively improved, the cross beams are arranged between the main beams to serve as upper and lower layer supporting structures, the transverse force transmission requirement is met, and the structural stability is improved.

Description

Technical Field

[0001] The utility model belongs to the field of bridge construction, and in particular relates to a steel plate girder bridge suitable for overhead pipelines. Background Art

[0002] In the past, comprehensive pipe corridors were generally laid along roads. Considering the landscape requirements of the city center and the restrictions on construction land, they were mostly constructed underground. In recent years, with the development of urban construction, special geological conditions such as rivers, lakes or mountains are inevitable. At this time, if the traditional underground pipe corridor inverted siphon method is used, there are disadvantages such as great construction difficulty, long construction period and high cost.

[0003] Pipeline overhead laying uses pipeline bridges or steel truss pipe gallery bridges to cross obstacles, which can better adapt to the terrain, save costs, and facilitate later maintenance and management. However, the existing steel truss pipe gallery bridges are mainly for conventional small-span pipelines and cannot meet the needs of large-span pipeline overhead. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a steel plate girder bridge suitable for overhead pipelines. The main beam adopts an I-shaped steel plate girder, which can effectively increase its spanning capacity.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a steel plate girder bridge suitable for overhead pipelines, comprising pipelines, steel grating plates, and at least two parallel and spaced I-shaped main beams;

[0006] A plurality of cross beams are arranged between the two main beam top plates and between the two main beam bottom plates, and both ends of the cross beams are respectively fixed to the two main beams, and the plurality of cross beams between the two main beam top plates jointly constitute an upper support structure, and the steel grating plate is installed on the upper support structure, and the plurality of cross beams between the two main beam bottom plates jointly constitute a lower support structure, and the pipeline is installed on the lower support structure;

[0007] It also includes a cap beam and a pile foundation. The cap beam is fixed on the top of the pile foundation. At least two support pads are arranged on the top of the cap beam. The two main beams are respectively installed on the two support pads.

[0008] Preferably, a plurality of horizontal diagonal braces are provided between the two main beam top plates and between the two main beam bottom plates, and two ends of the horizontal diagonal braces are respectively fixed to the two main beams.

[0009] Preferably, the multiple cross beams between the two main beam top plates are evenly spaced apart along the extension direction of the main beam, and the multiple cross beams between the two main beam bottom plates are evenly spaced apart along the extension direction of the main beam.

[0010] Preferably, a plurality of transverse stiffening ribs are fixed on the webs of the two main beams, and the transverse stiffening ribs are vertically arranged.

[0011] Preferably, the multiple transverse stiffening ribs on one main beam web are evenly spaced apart along the extension direction of the main beam, and the multiple transverse stiffening ribs on the other main beam web are evenly spaced apart along the extension direction of the main beam.

[0012] Preferably, support stiffening ribs are provided above the two bearing pads, the two support stiffening ribs correspond to the two main beams respectively, and the support stiffening ribs are fixed to the webs and top and bottom plates of the corresponding main beams.

[0013] Preferably, at least two walkway beams with C-shaped cross-sections are installed on the upper support structure, the two walkway beam openings are arranged opposite to each other, and the two ends of the steel grating plate are respectively fixed in the openings of the two walkway beams.

[0014] Preferably, a railing is fixed to the top of the walkway beam.

[0015] Preferably, at least two stoppers are provided on the cap beam.

[0016] Preferably, the pile foundation is a single bored cast-in-place pile.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model provides a steel plate girder bridge suitable for overhead pipelines. The main beam adopts an I-shaped steel plate girder, which can effectively increase its spanning capacity and reduce damage to the surrounding environment. The cross beams are arranged between the main beams as the upper and lower support structures, which not only meet the lateral force transmission requirements, but also enhance the structural stability. Moreover, the upper and lower support structures respectively leave space for daily maintenance and pipeline laying to meet the use requirements.

[0019] 2. The utility model provides a steel plate beam bridge suitable for overhead pipelines, which can effectively enhance the stability of the overall structure by arranging horizontal diagonal braces, transverse stiffening ribs, and supporting stiffening ribs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the front view structure of a steel plate girder bridge suitable for overhead pipelines provided in an embodiment of the utility model;

[0021] Figure 2 A schematic diagram of the side structure of a steel plate girder bridge suitable for overhead pipelines provided in an embodiment of the utility model;

[0022] Figure 3A schematic diagram of the side view structure of a main beam and related parts of a steel plate girder bridge suitable for overhead pipelines provided in an embodiment of the utility model;

[0023] Figure 4 A schematic diagram of a top view structure of a main beam and related parts of a steel plate girder bridge suitable for overhead pipelines provided in an embodiment of the utility model;

[0024] Figure 5 A schematic diagram of the three-dimensional structure of a main beam and related parts of a steel plate beam bridge suitable for overhead pipelines provided in an embodiment of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Main beam; 2. Cross beam; 3. Horizontal diagonal brace; 4. Horizontal stiffening ribs; 5. Support stiffening ribs; 6. Walkway beam; 7. Steel grating plate; 8. Handrail; 9. Pipeline; 10. Support pad stone; 11. Block; 12. Cap beam; 13. Pile foundation. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with specific embodiments so that those skilled in the art can understand the present invention more clearly.

[0028] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0029] like Figure 2-5 As shown, this embodiment provides a steel plate girder bridge suitable for overhead pipelines, including pipelines 9, steel grating plates 7, and two parallel and spaced I-shaped main beams 1.

[0030] The web of the main beam 1 is vertically arranged, and the top plate and bottom plate of the main beam 1 are both horizontally arranged. A plurality of cross beams 2 are arranged between the top plates of the two main beams 1 and between the bottom plates of the two main beams 1, and the two ends of the cross beams 2 are respectively welded and fixed to the two main beams 1.

[0031] The multiple cross beams 2 between the top plates of the two main beams 1 together constitute the upper support structure, and the steel grating plate 7 is installed on the upper support structure. The steel grating plate 7 is used as a pedestrian passage during daily maintenance. The multiple cross beams 2 between the bottom plates of the two main beams 1 together constitute the lower support structure, and the pipeline 9 is installed on the lower support structure to achieve the purpose of overhead pipeline. The steel grating plate 7 and the pipeline 9 are arranged along the extension direction of the main beam 1.

[0032] like Figure 1-2 As shown, the steel plate girder bridge also includes a cap beam 12 and a pile foundation 13. The cap beam 12 is fixed on the top of the pile foundation 13. Two support pads 10 are arranged on the top of the cap beam 12. The two main beams 1 are respectively installed on the two support pads 10. The support pads 10 can play a role in transmitting force. The upper structure load can be transmitted to the lower structure through the support pads 10. The lower structure can adopt a pile-connected cap beam type pier. The pile foundation 13 can be a single bored cast-in-place pile. Two blocks 11 are arranged on the cap beam 12. The two blocks 11 protect the two main beams 1 in the middle to prevent falling.

[0033] In summary, the steel plate girder bridge provided in this embodiment, the main beam 1 adopts an I-shaped steel plate beam, which can effectively increase its spanning capacity and reduce damage to the surrounding environment. The cross beam 2 is arranged between the two main beams 1 as an upper and lower support structure, which not only meets the lateral force transmission requirements, but also enhances the structural stability. The upper and lower support structures respectively leave space for daily maintenance and pipeline laying to meet the use requirements.

[0034] like Figure 4-5 As shown, in order to improve the stability of the two main beams 1, in this embodiment, a plurality of horizontal diagonal braces 3 are provided between the top plates of the two main beams 1 and between the bottom plates of the two main beams 1, and both ends of the horizontal diagonal braces 3 are respectively welded and fixed to the two main beams 1.

[0035] The multiple cross beams 2 between the top plates of the two main beams 1 are arranged at intervals of 3 m along the extension direction of the main beams 1 , and the multiple cross beams 2 between the bottom plates of the two main beams 1 are arranged at intervals of 3 m along the extension direction of the main beams 1 .

[0036] Moreover, in the upper support structure, a horizontal diagonal brace 3 is provided between each two adjacent cross beams 2, and the horizontal diagonal brace 3 and the two adjacent cross beams 2 are on the same horizontal plane, which can enhance the stability of the upper support structure. Similarly, in the lower support structure, a horizontal diagonal brace 3 is provided between each two adjacent cross beams 2, and the horizontal diagonal brace 3 and the two adjacent cross beams 2 are on the same horizontal plane, which can enhance the stability of the lower support structure.

[0037] In this embodiment, a plurality of transverse stiffening ribs 4 are fixed on the webs of the two main beams 1, and the transverse stiffening ribs 4 are vertically arranged.

[0038] The plurality of transverse stiffening ribs 4 on the web of one main beam 1 are arranged at intervals of 1.5 m along the extension direction of the main beam 1, and the plurality of transverse stiffening ribs 4 on the web of another main beam 1 are arranged at intervals of 1.5 m along the extension direction of the main beam 1. The transverse stiffening ribs 4 can improve the structural stability of the main beam 1.

[0039] In this embodiment, support stiffening ribs 5 are provided above the two support pads 10. The support stiffening ribs 5 are vertically arranged, and the two support stiffening ribs 5 correspond to the two main beams 1 respectively. The support stiffening ribs 5 are welded and fixed to the webs and top and bottom plates of the corresponding main beams 1. The support stiffening ribs 5 can improve the structural stability of the main beam 1.

[0040] like Figure 3 As shown, in this embodiment, two C-shaped walkway beams 6 are provided on the upper support structure, the walkway beams 6 are welded and fixed to the cross beams 2 and the horizontal diagonal braces 3, the openings of the two walkway beams 6 are arranged opposite to each other, and the two ends of the steel grating plate 7 are respectively fixed in the openings of the two walkway beams 6. This arrangement can improve the stability of the steel grating plate 7.

[0041] A handrail 8 is fixed to the top of the walkway beam 6. The staff can play a protective role when walking on the steel grating plate 7.

[0042] In this embodiment, the main beam 1, the cross beam 2, and the steel grating 7 are all steel structures, and the main beam 1, the cross beam 2, the horizontal brace 3, the transverse stiffening rib 4, the supporting stiffening rib 5, and the walkway beam 6 can all be made of Q355 steel, and the steel grating 7 and the handrail 8 can all be made of Q235 steel, with a quality grade not lower than Class B. The support pad 10, the block 11, the cap beam 12, and the pile foundation 13 are all reinforced concrete structures, with a strength grade not lower than C30. The dimensions of each part of the bridge, the thickness of the steel plate, and the reinforcement of the lower structure need to be determined based on calculations. The upper structure calculation includes the bearing capacity verification, stiffening rib structure verification, stiffness verification, stability verification, and fundamental frequency verification. The lower structure calculation includes the cap beam bearing capacity and crack verification, and the pile foundation bearing capacity verification.

[0043] The mechanisms, components and parts not specifically described in the present invention are all existing structures in the prior art and can be directly purchased from the market.

[0044] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0045] The above is only a preferred embodiment of the utility model, and is not intended to limit the protection scope of the utility model. 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 plate girder bridge suitable for overhead pipelines, characterized in that: It comprises a pipeline (9), a steel grid plate (7), and at least two I-shaped main beams (1) arranged in parallel and at intervals; A plurality of cross beams (2) are arranged between the top plates of the two main beams (1) and between the bottom plates of the two main beams (1), and both ends of the cross beams (2) are respectively fixed to the two main beams (1), and the plurality of cross beams (2) between the top plates of the two main beams (1) together constitute an upper support structure, and the steel grating plate (7) is installed on the upper support structure, and the plurality of cross beams (2) between the bottom plates of the two main beams (1) together constitute a lower support structure, and the pipeline (9) is installed on the lower support structure; It also includes a cap beam (12) and a pile foundation (13), wherein the cap beam (12) is fixed to the top of the pile foundation (13), at least two support pad stones (10) are arranged at the top of the cap beam (12), and the two main beams (1) are respectively installed on the two support pad stones (10).

2. The steel plate girder bridge suitable for overhead pipeline according to claim 1, characterized in that: A plurality of horizontal diagonal braces (3) are provided between the top plates of the two main beams (1) and between the bottom plates of the two main beams (1), and both ends of the horizontal diagonal braces (3) are respectively fixed to the two main beams (1).

3. The steel plate girder bridge suitable for overhead pipeline according to claim 1, characterized in that: A plurality of cross beams (2) between the top plates of the two main beams (1) are evenly spaced apart along the extension direction of the main beam (1), and a plurality of cross beams (2) between the bottom plates of the two main beams (1) are evenly spaced apart along the extension direction of the main beam (1).

4. The steel plate girder bridge suitable for overhead pipeline according to claim 1, characterized in that: A plurality of transverse stiffening ribs (4) are fixed on the webs of the two main beams (1), and the transverse stiffening ribs (4) are arranged vertically.

5. The steel plate girder bridge suitable for overhead pipeline according to claim 4, characterized in that: A plurality of transverse stiffening ribs (4) on the web of one main beam (1) are evenly spaced apart along the extension direction of the main beam (1), and a plurality of transverse stiffening ribs (4) on the web of another main beam (1) are evenly spaced apart along the extension direction of the main beam (1).

6. The steel plate girder bridge suitable for overhead pipeline according to claim 1, characterized in that: Support stiffening ribs (5) are provided above the two support cushion stones (10), the two support stiffening ribs (5) respectively correspond to the two main beams (1), and the support stiffening ribs (5) are fixed to the webs and top and bottom plates of the corresponding main beams (1).

7. The steel plate girder bridge suitable for overhead pipelines according to claim 1, characterized in that: At least two walkway beams (6) with C-shaped cross-sections are installed on the upper support structure, the openings of the two walkway beams (6) are arranged opposite to each other, and the two ends of the steel grating plate (7) are respectively fixed in the openings of the two walkway beams (6).

8. The steel plate girder bridge suitable for overhead pipelines according to claim 7, characterized in that: A handrail (8) is fixed to the top of the walkway beam (6).

9. The steel plate girder bridge suitable for overhead pipelines according to claim 1, characterized in that: At least two stoppers (11) are provided on the cap beam (12).

10. The steel plate girder bridge suitable for overhead pipelines according to claim 1, characterized in that: The pile foundation (13) is a single bored cast-in-place pile.

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