Fully-assembled steel-concrete combined groove-shaped girder bridge suitable for wide bridge floor

Abstract

The utility model discloses a full assembly type steel-concrete combined groove type girder bridge adapting to a wide bridge floor, which relates to the technical field of assembly type buildings and comprises two side girders, a plurality of middle girders, a plurality of section steel cross beams and a prefabricated bridge deck, the two side girders are respectively arranged on two sides of the bridge floor, the middle girders are respectively arranged on two sides of the bridge floor, and the section steel cross beams are respectively arranged on two sides of the bridge floor. The plurality of middle main beams are arranged between the two side main beams; the side main beams and the multiple middle main beams are adopted, the requirement for wide bridge deck building is met, the steel side main beams, the steel middle main beams, the steel profile steel cross beams and the prefabricated bridge deck slabs poured through concrete are adopted, the construction speed of the structure is increased, the assembly rate is increased, the structure is simple and light, and the force transmission path is clear; the multiple middle main beams can effectively share the load borne by the bridge floor, meanwhile, certain convenience is achieved in the construction process through the arrangement mode of the multiple middle main beams, and the main beams with the small size are easier to manufacture, transport and hoist.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fabricated building, especially relates to a full fabricated steel and concrete combined channel girder bridge suitable for wide bridge deck. BACKGROUND

[0002] The channel girder is a kind of bridge form for reducing the height from bridge deck to beam bottom, thereby increasing the clearance under bridge, and the section is composed of two edge webs and bottom plate to form "U" shape. As a kind of open section girder bridge, the channel girder has the advantages of low building height, light structure, web serving as sound insulation screen and the like; but its disadvantage is obvious, that is, low overall torsional rigidity, when the structure is subjected to vehicle load, the web is inclined inward to produce transverse displacement, and the greater the spacing between webs, the greater the displacement, so the width of bridge deck of the channel girder is limited, and it is only suitable for bridges with small bridge deck width.

[0003] The current channel girder is mainly divided into two types: concrete channel girder and steel structure channel girder. The concrete channel girder is prone to cracking at the corner where the concrete bottom plate meets the web, and is inconvenient to transport and hoist due to large weight, and cannot meet the requirements of fabricated bridge; the steel structure channel girder is prone to fatigue cracking of steel bridge deck, and the steel plate is prone to buckling. Therefore, in view of the above phenomenon, a full fabricated steel and concrete combined channel girder bridge suitable for wide bridge deck is proposed to meet the needs of practical use. SUMMARY

[0004] The utility model provides a kind of full fabricated steel and concrete combined channel girder bridge suitable for wide bridge deck, solve the technical problems that concrete channel girder is prone to cracking, self-weight and inconvenient to transport and hoist, steel structure channel girder is prone to fatigue cracking and buckling.

[0005] To solve the above technical problems, the utility model provides a kind of full fabricated steel and concrete combined channel girder bridge suitable for wide bridge deck, including side main beam, middle main beam, profile steel crossbeam and prefabricated bridge deck slab, the number of side main beam is two, two side main beam is respectively set on the two sides of bridge deck, the number of middle main beam is several, and several middle main beam is set between two side main beam, the distance between adjacent middle main beam of side main beam and between middle main beam and adjacent middle main beam is same, profile steel crossbeam is set between side main beam and side main beam, between side main beam and middle main beam and between middle main beam and middle main beam, prefabricated bridge deck slab is set above profile steel crossbeam, prefabricated bridge deck slab is connected by wet joint in the direction perpendicular to side main beam.

[0006] In some embodiments, the side main beam includes an upper edge steel pipe, a lower edge steel pipe, a steel web, corrugated steel bars, and a connecting tail plate. The upper edge steel pipe and the lower edge steel pipe are arranged in parallel. The steel web is arranged between the upper edge steel pipe and the lower edge steel pipe. The corrugated steel bars are zigzag lines and are arranged in the steel web. The connecting tail plate is arranged on one side of the steel web. The lower part of the connecting tail plate is fixed to the lower edge steel pipe by a reinforcing rib plate.

[0007] In some embodiments, the main beam includes an upper edge steel pipe, a lower edge steel pipe, a steel web, corrugated steel bars, and a connecting tail plate. The upper edge steel pipe and the lower edge steel pipe are arranged in parallel. The steel web is arranged between the upper edge steel pipe and the lower edge steel pipe. The corrugated steel bars are arranged in a zigzag pattern in the steel web. The connecting tail plate is symmetrically arranged on the left and right sides of the steel web. The connecting tail plate is fixed to the lower edge steel pipe by a reinforcing rib plate below it.

[0008] In some embodiments, the steel crossbeam is fixedly connected to the connecting tail plate.

[0009] In some embodiments, the number n of the main beams can be determined based on the bridge deck width B and the beam height H, and should satisfy n≥2.5H / B.

[0010] Compared with related technologies, the fully prefabricated steel-concrete composite trough beam bridge adapted to wide bridge decks provided by this utility model has the following beneficial effects:

[0011] This utility model provides a fully prefabricated steel-concrete composite trough beam bridge adapted to wide bridge decks. It adopts side main beams and multiple middle main beams to meet the construction requirements of wide bridge decks. It uses steel side main beams and middle main beams, steel crossbeams and precast concrete bridge decks to improve the construction speed and prefabrication rate. The structure is simple and lightweight with clear force transmission path.

[0012] This utility model provides a fully prefabricated steel-concrete composite trough beam bridge adapted to wide bridge decks. Setting multiple central main beams can more effectively distribute the load borne by the bridge deck. At the same time, the setting of multiple central main beams has certain convenience in the construction process, and the smaller main beams are easier to manufacture, transport and hoist. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0015] Figure 3 This is a structural diagram of the main beam of this utility model;

[0016] Figure 4 This is a structural diagram of the side main beam of this utility model.

[0017] The following are the labelings in the diagram: 1. Side main beam; 2. Middle main beam; 3. Steel crossbeam; 4. Precast bridge deck; 5. Wet joint; 101. Upper edge steel pipe; 102. Lower edge steel pipe; 103. Steel web; 104. Corrugated steel bar; 105. Connecting tail plate. Detailed Implementation

[0018] Example 1

[0019] This embodiment provides a fully prefabricated steel-concrete composite trough beam bridge adapted to wide bridge decks, such as... Figures 1-4 As shown, this utility model includes a side main beam 1, a middle main beam 2, a steel crossbeam 3, and a precast bridge deck 4. There are two side main beams 1, which are respectively set on both sides of the bridge deck. There are several middle main beams 2, which are set between the two side main beams 1. The distance between adjacent middle main beams 2 of side main beam 1 and between adjacent middle main beams 2 are the same. The steel crossbeam 3 is set between side main beams 1, between side main beams 1 and middle main beams 2, and between middle main beams 2. The precast bridge deck 4 is set above the steel crossbeam 3 and is connected by wet joints 5 in a direction perpendicular to the side main beams 1.

[0020] In this embodiment, side main beams 1 and multiple central main beams 2 are used to meet the requirements of wide-span bridge deck construction. The use of steel side main beams 1 and central main beams 2, steel crossbeams 3, and prefabricated bridge deck panels 4 improves the construction speed and increases the prefabrication rate. The structure is simple and lightweight, with a clear force transmission path.

[0021] Example 2

[0022] Based on Example 1, such as Figure 3 As shown, the side main beam 1 in this embodiment includes an upper edge steel pipe 101, a lower edge steel pipe 102, a steel web 103, corrugated steel bars 104, and a connecting tail plate 105. The upper edge steel pipe 101 and the lower edge steel pipe 102 are arranged in parallel. The steel web 103 is arranged between the upper edge steel pipe 101 and the lower edge steel pipe 102. The corrugated steel bars 104 are arranged in a zigzag pattern in the steel web 103. The connecting tail plate 105 is arranged on one side of the steel web 103. The lower part of the connecting tail plate 105 is fixed to the lower edge steel pipe 102 by a reinforcing rib plate. The steel crossbeam 3 is fixedly connected to the connecting tail plate 105.

[0023] In this embodiment, the steel web 103 is connected by corrugated steel bars 104 to form an integral web, which improves the out-of-plane stiffness and shear resistance of the steel web 103 and has a good sound insulation effect. The lower part of the connecting tail plate 105 is fixed to the lower edge steel pipe 102 by setting a reinforcing rib plate, which increases the load-bearing capacity of the connecting tail plate 105.

[0024] Example 3

[0025] On the basis of Embodiment One, as shown in Figure 4 The main girder 2 of the present embodiment includes an upper edge steel pipe 101, a lower edge steel pipe 102, a steel web plate 103, corrugated reinforcement 104, and a connecting tail plate 105. The upper edge steel pipe 101 is arranged in parallel with the lower edge steel pipe 102. The steel web plate 103 is arranged between the upper edge steel pipe 101 and the lower edge steel pipe 102. The corrugated reinforcement 104 is arranged in the steel web plate 103 in a zigzag line. The connecting tail plate 105 is symmetrically arranged on the left and right sides of the steel web plate 103. The connecting tail plate 105 is fixed to the lower edge steel pipe 102 by arranging a reinforcing rib plate below the connecting tail plate 105. The steel cross beam 3 is fixedly connected to the connecting tail plate 105.

[0026] In the present embodiment, the steel web plate 103 is connected by the corrugated reinforcement 104 to form an integral web plate, thereby improving the out-of-plane stiffness and shear capacity of the steel web plate 103. The connecting tail plate 105 is fixed to the lower edge steel pipe 102 by arranging a reinforcing rib plate below the connecting tail plate 105, thereby increasing the load-bearing capacity of the connecting tail plate 105. The connecting tail plates 105 arranged on both sides are connected to the steel cross beam 3.

[0027] Embodiment Four

[0028] On the basis of Embodiment One, as shown in Figure 2 The number n of the main girders 2 of the present embodiment can be determined according to the bridge deck width B and the girder height H, and should satisfy the relationship n≥2.5H / B.

[0029] In the present embodiment, multiple main girders 2 are arranged and satisfy the relationship n≥2.5H / B, which can more effectively share the load borne by the bridge deck. When a vehicle travels on the bridge deck, the vertical load generated includes the vehicle weight and the load transmitted to the main girders 2 through the bridge deck. Multiple main girders 2 can disperse these loads, thereby avoiding excessive pressure on a single main girder. At the same time, the arrangement of multiple main girders 2 has certain convenience in the construction process. In the prefabrication and installation of the main girders 2, smaller-sized main girders (relative to fewer main girders) are easier to manufacture, transport, and hoist.

[0030] Working principle: The edge main girder 1 and multiple main girders 2 are adopted to meet the requirements of wide bridge deck construction. Steel edge main girders 1 and main girders 2, steel cross beams 3, and prefabricated bridge deck slabs 4 are adopted to improve the construction speed of the structure and improve the assembly rate. The structure is simple, light, and compact, and the force transmission path is clear. Multiple main girders 2 can more effectively share the load borne by the bridge deck. At the same time, the arrangement of multiple main girders 2 has certain convenience in the construction process, and smaller-sized main girders are easier to manufacture, transport, and hoist.

Claims

1. A fully prefabricated steel-concrete composite trough beam bridge adapted to wide bridge decks, characterized in that, The bridge deck includes side main beams, middle main beams, steel crossbeams, and precast bridge deck panels. There are two side main beams, which are respectively located on both sides of the bridge deck. There are several middle main beams, which are located between the two side main beams. The distances between adjacent middle main beams of the side main beams and between adjacent middle main beams are all the same. The steel crossbeams are located between side main beams, between side main beams and middle main beams, and between middle main beams. The precast bridge deck panels are located above the steel crossbeams and are connected by wet joints in a direction perpendicular to the side main beams.

2. The fully prefabricated steel-concrete composite trough beam bridge adapted to wide bridge decks according to claim 1, characterized in that, The side main beam includes an upper edge steel pipe, a lower edge steel pipe, a steel web, corrugated steel bars, and a connecting tail plate. The upper edge steel pipe and the lower edge steel pipe are arranged in parallel. The steel web is located between the upper edge steel pipe and the lower edge steel pipe. The corrugated steel bars are arranged in a zigzag pattern within the steel web. The connecting tail plate is located on one side of the steel web. The lower part of the connecting tail plate is fixed to the lower edge steel pipe by a reinforcing rib plate.

3. The fully prefabricated steel-concrete composite trough beam bridge adapted to wide bridge decks according to claim 1, characterized in that, The main beam includes an upper edge steel pipe, a lower edge steel pipe, a steel web, corrugated steel bars, and a connecting tail plate. The upper edge steel pipe and the lower edge steel pipe are arranged in parallel. The steel web is located between the upper edge steel pipe and the lower edge steel pipe. The corrugated steel bars are arranged in a zigzag pattern within the steel web. The connecting tail plate is symmetrically arranged on the left and right sides of the steel web. The connecting tail plate is fixed to the lower edge steel pipe by a reinforcing rib plate below it.

4. A fully prefabricated steel-concrete composite trough beam bridge adapted to wide bridge decks according to any one of claims 2-3, characterized in that, The steel crossbeam is fixedly connected to the connecting tail plate.

5. A fully prefabricated steel-concrete composite trough beam bridge adapted to wide bridge decks according to claim 1, characterized in that, The number of main beams n can be determined based on the bridge deck width B and beam height H, and should satisfy n≥2.5H / B.

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