A steel plate concrete composite bridge deck structure

Abstract

The utility model discloses a steel plate concrete composite bridge deck structure, the deck structure includes: a bottom steel plate; a plurality of first reinforcing ribs arranged at intervals along the longitudinal direction of the bridge, the bottoms of the plurality of first reinforcing ribs are respectively fixedly connected to the bottom steel plate, each of the first reinforcing ribs is respectively provided with a plurality of first through holes, the first through holes are used to accommodate concrete; a plurality of second reinforcing ribs arranged at intervals along the transverse direction of the bridge, the bottoms of the plurality of second reinforcing ribs are respectively fixedly connected to the bottom steel plate, each of the second reinforcing ribs is respectively provided with a plurality of second through holes, the second through holes are used to accommodate concrete. In the utility model, by providing longitudinal and transverse opening reinforcing ribs fixedly connected to the bottom steel plate, it can form a whole with the upper concrete layer to form a common force system, reduce on-site construction work, and improve work efficiency; at the same time, the concrete layer is placed under a bidirectional constraint to improve the rigidity and strength of the bridge deck.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge structures, and further relates to a steel plate concrete composite bridge deck structure. Background Art

[0002] The bridge deck, as an important part of the bridge structure, directly bears the wheel pressure and impact of the upper vehicles. Its working state will directly affect the performance of the bridge. The correct selection of the bridge deck structure is of great significance in bridge design. The steel-concrete composite bridge deck is a new type of bridge deck that is composed of a steel bottom plate and an upper layer of concrete, which are combined into a whole and bear the force together through shear connectors. Under the action of load, it can give full play to the combined advantages of the strong tensile performance of steel and the strong compressive performance of concrete.

[0003] In the past, for narrow steel box girder bridge structures, welded nails or shear keys were often placed on the steel top plate to connect it to the concrete to ensure that the steel plate and concrete were subjected to coordinated forces. It was also necessary to set a structural steel mesh in the concrete layer to increase the crack resistance of the steel-concrete composite slab. However, due to the complexity of the construction site environment, such as limited construction space, the on-site installation of steel components and tying of steel bars are relatively cumbersome and reduce construction efficiency.

[0004] Therefore, it is necessary to design a steel plate concrete composite bridge deck structure to solve the above problems. Summary of the invention

[0005] In view of the above-mentioned technical problems, the purpose of the utility model is to provide a steel plate concrete composite bridge deck structure, which is fixedly connected to the bottom steel plate by arranging longitudinal and transverse open hole reinforcement ribs, so as to form a whole with the upper concrete layer, constitute a common force system, reduce on-site construction work, and improve work efficiency. At the same time, the concrete layer is placed under the bidirectional constraint of the bidirectional through holes, thereby enhancing the stiffness and strength of the bridge deck and improving the performance of the bridge deck.

[0006] In order to achieve the above object, the utility model provides a steel plate concrete composite bridge deck structure, comprising:

[0007] Bottom steel plate;

[0008] A plurality of first reinforcing ribs are arranged at intervals along the bridge direction, the bottoms of the plurality of first reinforcing ribs are respectively fixedly connected to the bottom steel plate, and each of the first reinforcing ribs is respectively provided with a plurality of first through holes, and the first through holes are used to accommodate concrete;

[0009] A plurality of second reinforcing ribs are arranged at intervals along the transverse bridge direction, the bottoms of the plurality of second reinforcing ribs are respectively fixedly connected to the bottom steel plate, and each of the second reinforcing ribs is respectively provided with a plurality of second through holes, and the second through holes are used to accommodate concrete.

[0010] In some embodiments, a plurality of the first reinforcing ribs are arranged at equal intervals and are respectively vertically fixedly connected to the bottom steel plate;

[0011] A plurality of the second reinforcing ribs are arranged at equal intervals and are respectively vertically fixedly connected to the bottom steel plate.

[0012] In some embodiments, the first reinforcing rib includes a first vertical plate and a first bottom horizontal plate, the first vertical plate is fixedly connected to the first bottom horizontal plate, the first bottom horizontal plate is fixed to the bottom steel plate, and a plurality of the first through holes are provided on the first vertical plate;

[0013] The second reinforcing rib includes a second vertical plate and a second bottom horizontal plate, the second vertical plate is fixedly connected to the second bottom horizontal plate, the second bottom horizontal plate is fixed to the bottom steel plate, and a plurality of second through holes are arranged on the second vertical plate.

[0014] In some embodiments, the first reinforcing rib further includes a first top transverse plate, and the first top transverse plate is fixedly connected to an end of the first vertical plate away from the first bottom transverse plate;

[0015] The second reinforcing rib further includes a second top transverse plate, and the second top transverse plate is fixedly connected to an end of the second vertical plate away from the second bottom transverse plate.

[0016] In some embodiments, the first bottom transverse plate and the bottom steel plate are integrally formed, or the first bottom transverse plate and the bottom steel plate are welded and fixed;

[0017] The second bottom transverse plate is integrally formed with the bottom steel plate, or the second bottom transverse plate is fixed to the bottom steel plate by welding.

[0018] In some embodiments, the first reinforcing rib is an I-shaped steel, and the first reinforcing rib is fixedly connected to the bottom steel plate by double-sided fillet welding;

[0019] The second reinforcing rib is an I-shaped steel, and the second reinforcing rib is fixedly connected to the bottom steel plate by double-sided fillet welding.

[0020] In some embodiments, a plurality of the first through holes are arranged at intervals along the length direction of the first reinforcing rib;

[0021] A plurality of the second through holes are arranged at intervals along the length direction of the second reinforcing rib.

[0022] In some embodiments, the first through hole is a circular hole, a plurality of the first through holes are arranged at equal intervals, and the first through hole is located in the middle of the height direction of the first reinforcing rib;

[0023] The second through hole is a circular hole, a plurality of the second through holes are arranged at equal intervals, and the second through hole is located in the middle of the second reinforcing rib in the height direction.

[0024] In some embodiments, the diameter of the first through hole is greater than the maximum particle size of the concrete raw material;

[0025] The diameter of the second through hole is greater than the maximum particle size of the concrete raw material.

[0026] In some embodiments, it further comprises:

[0027] A concrete layer is cast on the bottom steel plate using a low shrinkage concrete material, the first reinforcing rib and the second reinforcing rib are wrapped inside the concrete layer, and the low shrinkage concrete material fills the first through hole, the second through hole and the space enclosed by the first reinforcing rib and the second reinforcing rib.

[0028] Compared with the prior art, the steel plate concrete composite bridge deck structure provided by the utility model has the following beneficial effects:

[0029] 1. The steel plate concrete composite bridge deck structure provided by the utility model is connected to the bottom steel plate by setting longitudinal and transverse opening reinforcement ribs, which can form a whole with the upper concrete layer to form a common force system, reduce on-site construction work, improve work efficiency, and at the same time put the concrete layer under the bidirectional constraint of the bidirectional through holes, thereby improving the rigidity and strength of the bridge deck and improving the performance of the bridge deck;

[0030] 2. The steel plate concrete composite bridge deck structure provided by the utility model improves the connection stability by setting the first reinforcement rib and the second reinforcement rib as I-shaped steel, and then fixing them with the bottom steel plate by double-sided corner welding; at the same time, the top cross plate can also interfere with the concrete layer, thereby improving the connection firmness of the concrete layer and further improving the rigidity and strength of the bridge deck. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0032] Figure 1 It is a front view of a steel plate concrete composite bridge deck structure according to a preferred embodiment of the utility model;

[0033] Figure 2 It is a side view of a steel plate concrete composite bridge deck structure according to a preferred embodiment of the utility model;

[0034] Figure 3It is a top view of a steel plate concrete composite bridge deck structure according to a preferred embodiment of the utility model;

[0035] Figure 4 It is a front view of the first reinforcing rib of the preferred embodiment of the utility model;

[0036] Figure 5 It is a side view of the first reinforcing rib of the preferred embodiment of the utility model;

[0037] Figure 6 It is a front view of the second reinforcing rib of the preferred embodiment of the utility model;

[0038] Figure 7 It is a side view of the second reinforcing rib of the preferred embodiment of the utility model.

[0039] Description of Figure Numbers:

[0040] Bottom steel plate 1 , first reinforcing rib 2 , first through hole 21 , first vertical plate 22 , first bottom transverse plate 23 , first top transverse plate 24 , second reinforcing rib 3 , second through hole 31 , second vertical plate 32 , second bottom transverse plate 33 , second top transverse plate 34 , concrete layer 4 . DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0042] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0043] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0044] In this article, 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 integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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 this utility model can be understood according to specific circumstances.

[0045] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0046] In one embodiment, the reference specification Figures 1 to 3 The utility model provides a steel plate concrete composite bridge deck structure, comprising: a bottom steel plate 1; a plurality of first reinforcing ribs 2 arranged at intervals along the longitudinal direction of the bridge, the bottoms of the plurality of first reinforcing ribs 2 are respectively fixedly connected to the bottom steel plate 1, and each first reinforcing rib 2 is respectively provided with a plurality of first through holes 21, and the first through holes 21 are used to accommodate concrete; a plurality of second reinforcing ribs 3 arranged at intervals along the transverse direction of the bridge, the bottoms of the plurality of second reinforcing ribs 3 are respectively fixedly connected to the bottom steel plate 1, and each second reinforcing rib 3 is respectively provided with a plurality of second through holes 31, and the second through holes 31 are used to accommodate concrete.

[0047] Traditional steel-concrete composite slabs often use welding nails or PBL shear keys to ensure the reliable connection between steel and concrete slabs. At the same time, in order to improve the crack resistance of the composite slab, structural steel bars need to be set in the concrete layer. However, this inevitably increases the workload on site and affects the construction speed. At the same time, the use of a large number of welding nails increases the construction cost.

[0048] In this embodiment, by setting the first reinforcing rib 2 and the second reinforcing rib 3 with longitudinal and transverse openings respectively and fixedly connected to the bottom steel plate 1, they can form a whole with the upper concrete layer to constitute a common force system, thereby reducing on-site construction work and improving work efficiency; at the same time, the set through holes can accommodate concrete, so that the concrete layer is under the bidirectional constraint of the bidirectional through holes, effectively improving the stiffness and strength of the bridge deck and improving the performance of the bridge deck.

[0049] In addition, the steel plate concrete composite bridge deck structure can have holes drilled in the first reinforcing rib 2 and the second reinforcing rib 3 in the factory, and utilize the transverse second reinforcing rib 3 and the concrete tenon in the first through hole 21 to resist the shear action in the longitudinal direction of the bridge, and utilize the longitudinal first reinforcing rib 2 and the concrete tenon in the second through hole 31 to resist the shear action in the transverse direction of the bridge; the steel plate concrete composite bridge deck structure does not need to arrange longitudinal and transverse structural steel bars, and utilizes the longitudinal and transverse openings of the first reinforcing rib 2 and the second reinforcing rib 3 to enhance the crack resistance of the concrete, while improving the longitudinal and transverse stiffness of the steel-concrete composite plate.

[0050] In one embodiment, the reference specification Figures 1 to 7 , a plurality of first reinforcing ribs 2 are arranged at equal intervals and are respectively vertically fixedly connected to the bottom steel plate 1; a plurality of second reinforcing ribs 3 are arranged at equal intervals and are respectively vertically fixedly connected to the bottom steel plate 1.

[0051] Reference Manual Attached Figure 4 , Figure 5 The first reinforcing rib 2 includes a first vertical plate 22 and a first bottom horizontal plate 23. The first vertical plate 22 is fixedly connected to the first bottom horizontal plate 23. The first bottom horizontal plate 23 is fixed to the bottom steel plate 1. A plurality of first through holes 21 are provided on the first vertical plate 22. The first bottom horizontal plate 23 is integrally formed with the bottom steel plate 1, or the first bottom horizontal plate 23 is welded and fixed to the bottom steel plate 1; by providing the first bottom horizontal plate 23 to be fixedly connected to the bottom steel plate 1 by double-sided fillet welding, the connection stability is improved.

[0052] Furthermore, the first reinforcing rib 2 also includes a first top transverse plate 24, which is fixedly connected to one end of the first vertical plate 22 away from the first bottom transverse plate 23; by setting the first top transverse plate 24 on the top, it can interfere with the concrete layer, thereby improving the connection firmness of the concrete layer and further improving the stiffness and strength of the bridge deck.

[0053] Reference Manual Attached Figure 6 , Figure 7 The second reinforcing rib 3 includes a second vertical plate 32 and a second bottom horizontal plate 33, the second vertical plate 32 is fixedly connected to the second bottom horizontal plate 33, the second bottom horizontal plate 33 is fixed to the bottom steel plate 1, and a plurality of second through holes 31 are provided on the second vertical plate 32. The second bottom horizontal plate 33 is integrally formed with the bottom steel plate 1, or the second bottom horizontal plate 33 is welded and fixed to the bottom steel plate 1. By setting the second bottom horizontal plate 33 to be fixedly connected to the bottom steel plate 1 by double-sided fillet welding, the connection stability is improved.

[0054] Furthermore, the second reinforcing rib 3 further includes a second top transverse plate 34, which is fixedly connected to an end of the second vertical plate 32 away from the second bottom transverse plate 33. The second top transverse plate 34 on the top can interfere with the concrete layer, thereby improving the connection firmness of the concrete layer and further improving the rigidity and strength of the bridge deck.

[0055] In one embodiment, the reference specification Figures 1 to 3 The first reinforcing rib 2 is an I-shaped steel, and the first reinforcing rib 2 is fixedly connected to the bottom steel plate 1 by double-sided fillet welding; the second reinforcing rib 3 is an I-shaped steel, and the second reinforcing rib 3 is fixedly connected to the bottom steel plate 1 by double-sided fillet welding. I-shaped steel is a purchased part, and there are products of different specifications on the market. In actual application, it can be purchased according to actual needs, which can effectively reduce costs.

[0056] Furthermore, a plurality of first through holes 21 are arranged at equal intervals along the length direction of the first reinforcing rib 2; a plurality of second through holes 31 are arranged at equal intervals along the length direction of the second reinforcing rib 3. The intersection area of ​​the first reinforcing rib 2 and the second reinforcing rib 3 should be connected by double-sided fillet welding to ensure the reliability of welding. If the opening area is close to the intersection area, the opening position should be appropriately adjusted to avoid affecting the shear resistance of the concrete in the hole. The size and opening size of the first reinforcing rib 2 and the second reinforcing rib 3 should be determined according to the corresponding specifications and must meet the longitudinal and transverse shear design requirements.

[0057] Furthermore, the first through hole 21 is a circular hole, and the second through hole 31 is a circular hole. The circular hole has no corners, which prevents the force from being too concentrated, resulting in easy cracking at the corners of the opening. Of course, the first through hole 21 and the second through hole 31 can also be set as holes of other shapes, such as elliptical holes. The diameters of the first through hole 21 and the second through hole 31 are larger than the maximum particle size of the concrete raw material. This ensures that the concrete material can pass through the first through hole 21 and the second through hole 31, ensuring the pouring fluidity of the concrete material.

[0058] In one embodiment, the reference specification Figures 1 to 3 The steel plate concrete composite bridge deck structure also includes: a concrete layer 4, which is cast on the bottom steel plate 1 using low shrinkage concrete material. Low shrinkage concrete is a high-performance concrete with the advantages of low shrinkage, high strength, high durability, etc., and has been widely used in industrial and civil buildings. The first reinforcing rib 2 and the second reinforcing rib 3 are coated inside the concrete layer, and the low shrinkage concrete material fills the first through hole 21, the second through hole 31, and the space enclosed by the first reinforcing rib 2 and the second reinforcing rib 3.

[0059] The specific size, hole diameter and spacing of the first reinforcing rib 2 and the second reinforcing rib 3 should be designed and verified according to actual needs. Since there are four corners in the steel lattice structure composed of the first reinforcing rib 2 and the second reinforcing rib 3, defects are prone to occur here. When pouring concrete, the concrete should be fully vibrated to ensure its uniform distribution.

[0060] In this embodiment, the bottom steel plate 1, the first reinforcing rib 2, the second reinforcing rib 3 and the concrete layer are wrapped together and bear the force synergistically. The overall rigidity of the structure is large and the bearing capacity is strong. This can also effectively reduce the thickness of the concrete layer, reduce the strain amplitude of the bridge deck under load, and improve the force characteristics of the upper pavement structure layer.

[0061] The concrete in the steel plate concrete composite bridge deck structure is constrained by the first reinforcing rib 2 and the second reinforcing rib 3 arranged in the longitudinal and transverse directions, and its compression and tension characteristics are effectively enhanced, improving its crack resistance. At the same time, the reinforcing rib openings improve the interface connection performance between the longitudinal and transverse steel and concrete. The composite plate steel structure can be processed in the factory. After the on-site splicing is completed, there is no need to arrange structural steel bars, and the pouring of concrete can be completed. The construction is convenient, and the rigidity and strength of the bridge deck are improved, and the fatigue resistance of the bridge deck is improved.

[0062] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0063] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A steel plate concrete composite bridge deck structure, characterized in that: include: Bottom steel plate; A plurality of first reinforcing ribs are arranged at intervals along the bridge direction, the bottoms of the plurality of first reinforcing ribs are respectively fixedly connected to the bottom steel plate, and each of the first reinforcing ribs is respectively provided with a plurality of first through holes, and the first through holes are used to accommodate concrete; A plurality of second reinforcing ribs are arranged at intervals along the transverse direction of the bridge, the bottoms of the plurality of second reinforcing ribs are respectively fixedly connected to the bottom steel plate, and each of the second reinforcing ribs is respectively provided with a plurality of second through holes, and the second through holes are used to accommodate concrete.

2. The steel plate concrete composite bridge deck structure according to claim 1, characterized in that: A plurality of the first reinforcing ribs are arranged at equal intervals and are respectively vertically fixedly connected to the bottom steel plate; A plurality of the second reinforcing ribs are arranged at equal intervals and are respectively vertically fixedly connected to the bottom steel plate.

3. The steel plate concrete composite bridge deck structure according to claim 2, characterized in that: The first reinforcing rib comprises a first vertical plate and a first bottom horizontal plate, the first vertical plate is fixedly connected to the first bottom horizontal plate, the first bottom horizontal plate is fixed to the bottom steel plate, and a plurality of the first through holes are arranged on the first vertical plate; The second reinforcing rib includes a second vertical plate and a second bottom horizontal plate, the second vertical plate is fixedly connected to the second bottom horizontal plate, the second bottom horizontal plate is fixed to the bottom steel plate, and a plurality of second through holes are arranged on the second vertical plate.

4. The steel plate concrete composite bridge deck structure according to claim 3, characterized in that: The first reinforcing rib further comprises a first top transverse plate, and the first top transverse plate is fixedly connected to an end of the first vertical plate away from the first bottom transverse plate; The second reinforcing rib further includes a second top transverse plate, and the second top transverse plate is fixedly connected to an end of the second vertical plate away from the second bottom transverse plate.

5. The steel plate concrete composite bridge deck structure according to claim 3, characterized in that: The first bottom transverse plate is integrally formed with the bottom steel plate, or the first bottom transverse plate is welded and fixed to the bottom steel plate; The second bottom transverse plate is integrally formed with the bottom steel plate, or the second bottom transverse plate is fixed to the bottom steel plate by welding.

6. The steel plate concrete composite bridge deck structure according to claim 1, characterized in that: The first reinforcing rib is an I-shaped steel, and the first reinforcing rib is fixedly connected to the bottom steel plate by double-sided fillet welding; The second reinforcing rib is an I-shaped steel, and the second reinforcing rib is fixedly connected to the bottom steel plate by double-sided fillet welding.

7. The steel plate concrete composite bridge deck structure according to any one of claims 1 to 6, characterized in that: A plurality of the first through holes are arranged at intervals along the length direction of the first reinforcing rib; A plurality of the second through holes are arranged at intervals along the length direction of the second reinforcing rib.

8. The steel plate concrete composite bridge deck structure according to claim 7, characterized in that: The first through hole is a circular hole, a plurality of the first through holes are arranged at equal intervals, and the first through hole is located in the middle of the height direction of the first reinforcing rib; The second through hole is a circular hole, a plurality of the second through holes are arranged at equal intervals, and the second through hole is located in the middle of the second reinforcing rib in the height direction.

9. The steel plate concrete composite bridge deck structure according to claim 8, characterized in that: The diameter of the first through hole is greater than the maximum particle size of the concrete raw material; The diameter of the second through hole is greater than the maximum particle size of the concrete raw material.

10. The steel plate concrete composite bridge deck structure according to claim 1, characterized in that: Also includes: A concrete layer is cast on the bottom steel plate using a low shrinkage concrete material, the first reinforcing rib and the second reinforcing rib are wrapped inside the concrete layer, and the low shrinkage concrete material fills the first through hole, the second through hole and the space enclosed by the first reinforcing rib and the second reinforcing rib.

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