Prefabricated concrete honeycomb steel bridge deck slab and construction assembling method
By adopting prefabricated concrete honeycomb steel bridge decks and using the combined structure of honeycomb steel plate and carbon fiber rods, the existing bridge decks are easily prone to fatigue damage in large-span bridges, achieving higher load-bearing capacity, fatigue resistance and service life, while improving construction efficiency.
Patent Information
- Application Number
- CN202510481603.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2025-06-06
AI Technical Summary
Existing orthogonal opposite-sex steel bridge decks are prone to fatigue damage in large-span bridges, resulting in local fatigue cracks, damage to the bridge deck paving layer, and rust, affecting driving stability and safety.
Prefabricated concrete honeycomb steel bridge deck panels are used, and the structure includes a lower base plate, honeycomb steel plate, concrete layer and carbon fiber rods. The inner hollow area of the honeycomb steel plate is cast into a concrete layer, and the carbon fiber rods apply prestress, and each component is fixed by welding and bolting.
It improves the integrity and local stress capacity of the bridge deck, improves the load-bearing capacity and fatigue resistance of the bridge deck, extends the service life, and reduces the workload and maintenance costs at the construction site, and improves construction efficiency.
Smart Images
Figure CN120099855A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of bridge structures, and in particular to a prefabricated assembled concrete honeycomb steel bridge deck and a construction and assembly method. Background Art
[0002] The bridge deck and pavement structure are platforms that directly provide traffic flow. Since they are exposed to the environment and directly affected by vehicle loads, their working conditions directly affect the durability of the main structure of the bridge and driving comfort.
[0003] Among the bridge construction methods currently used in the world, orthotropic steel bridge decks are the most commonly used for large-span and medium-span steel bridges. However, the fatigue cracking problem of orthotropic steel bridge decks is relatively serious. There are many fatigue cracks in the bridge deck, damage to the bridge deck pavement layer, and rust, which affect the driving stability and safety, and also affect the safety of the bridge itself. The structural form of orthotropic steel bridge decks has not changed much, and there are still many fatigue defects.
[0004] At present, prefabrication is an effective means to speed up construction, reduce on-site pollution, and achieve low-carbon construction. Under the guidance of national policies and technological development, prefabricated bridge structures are also being used more and more widely in various projects. Summary of the invention
[0005] In view of this, the present application provides a prefabricated assembled concrete honeycomb steel bridge deck and a construction and assembly method. Due to the presence of the internal honeycomb steel plate, the concrete honeycomb steel bridge deck not only has better integrity, but also can improve local stress and increase the bearing capacity of the bridge deck; the carbon fiber rods have good mechanical properties and are corrosion-resistant. By applying prestress, the service life of the bridge deck can be increased; the concrete layer is poured and cured in the factory, which greatly reduces the workload and maintenance cost of pouring at the construction site, and a good maintenance environment also improves the quality of the concrete layer; the use of assembled bridge decks will also greatly improve construction efficiency, and can effectively overcome the defects of the above-mentioned prior art.
[0006] The first aspect of the present application provides a prefabricated assembled concrete honeycomb steel bridge deck, comprising a lower bottom plate, a honeycomb steel plate is arranged on the top of the lower bottom plate, and a concrete layer is poured in the hollow area of the honeycomb steel plate;
[0007] Baffles are arranged around the lower bottom plate, and casing holes are opened on the baffles at both ends of the longitudinal direction of the prefabricated assembled concrete honeycomb steel bridge deck, casings are passed through the casing holes, and carbon fiber rods are arranged in the casings; bolt connection holes are opened at the ends of the baffles at both ends of the transverse direction of the prefabricated assembled concrete honeycomb steel bridge deck.
[0008] Preferably, the honeycomb steel plate is provided with openings along its transverse direction, and perforated steel bars are inserted into the openings.
[0009] Preferably, the overall structure of the honeycomb steel plate is hexagonal, square or rhombus.
[0010] Preferably, the honeycomb steel plate and the lower base plate are fixedly connected by welding.
[0011] Preferably, the concrete layer is made of C50 self-compacting concrete.
[0012] Preferably, the baffle plate and the lower base plate are fixedly connected by welding.
[0013] Preferably, the lower base plate is a steel plate with a thickness of 12 to 18 mm.
[0014] Preferably, the thickness of the baffle is 8-10 mm, and the height of the baffle is 200-250 mm.
[0015] Preferably, the prefabricated assembled concrete honeycomb steel bridge deck is made of thin steel plates with a thickness of 4 to 6 mm.
[0016] The second aspect of the present application further provides a construction and assembly method of the above-mentioned prefabricated assembled concrete honeycomb steel bridge deck, comprising the following steps:
[0017] (1) hoisting the prefabricated assembled concrete honeycomb steel bridge deck to a designated location and connecting and fixing it to the main beam;
[0018] (2) splicing another prefabricated assembled concrete honeycomb steel bridge deck at a position adjacent to the prefabricated assembled concrete honeycomb steel bridge deck, fixing it with high-strength bolts at the bolt connection holes on the side of the prefabricated assembled concrete honeycomb steel bridge deck, and welding the remaining contact surfaces;
[0019] (3) After completing the splicing, check to ensure the strength of the connection;
[0020] (4) Insert the carbon fiber rod into the reserved casing and then apply prestress using the post-tensioning method.
[0021] Compared with the prior art, this application has the following beneficial effects:
[0022] 1. The current bridge deck is of a relatively simple type. Orthotropic steel bridge decks are usually used in large-span bridges. However, there are many parts that are prone to fatigue damage. In order to improve the bearing capacity of the bridge deck and enhance its fatigue resistance, this application proposes for the first time a prefabricated assembled concrete honeycomb steel bridge deck structure.
[0023] 2. The concrete honeycomb steel bridge deck not only has better integrity due to the presence of the internal honeycomb steel plate, but also can improve local stress and enhance the bearing capacity of the bridge deck.
[0024] 3. Carbon fiber rods have good mechanical properties and are corrosion-resistant. Using them to apply prestress can increase the service life of the bridge deck.
[0025] 4. The concrete layer is poured and cured in the factory, which greatly reduces the workload and maintenance costs of pouring at the construction site. A good maintenance environment also improves the quality of the concrete layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the description of the present application or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0027] Figure 1 A top view of the prefabricated assembled concrete honeycomb steel bridge deck (square) in Example 1;
[0028] Figure 2 It is a front view of the prefabricated assembled concrete honeycomb steel bridge deck (square) in Example 1;
[0029] Figure 3 It is a side view of the prefabricated assembled concrete honeycomb steel bridge deck (square) in Example 1;
[0030] Figure 4 It is a schematic diagram of assembling two adjacent prefabricated assembled concrete honeycomb steel bridge decks (square) in Example 1;
[0031] Figure 5 A top view of the prefabricated assembled concrete honeycomb steel bridge deck (hexagonal) in Example 2;
[0032] Figure 6 It is a top view of the prefabricated assembled concrete honeycomb steel bridge deck (diamond shape) in Example 3.
[0033] Description of reference numerals:
[0034] 1. Lower base plate; 2. Honeycomb steel plate; 3. Concrete layer; 4. Baffle; 5. Casing; 6. Carbon fiber rod; 7. Bolt connection hole; 8. Perforated steel bar. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0036] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.
[0037] Secondly, it should be noted that in the description of the present application, terms such as "up", "down", "left", "right", "front", "back", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.
[0038] It should be noted that the longitudinal direction refers to the width direction in the top view; the transverse direction refers to the length direction in the top view.
[0039] like Figure 1-4 As shown, an embodiment of the present application provides a prefabricated assembled concrete honeycomb steel bridge deck, including a lower base plate 1, a honeycomb steel plate 2 is arranged on the top of the lower base plate 1, and a concrete layer 3 is cast in the hollow area of the honeycomb steel plate 2; baffles 4 are arranged around the lower base plate 1, and sleeve holes are opened on the baffles 4 at both ends of the longitudinal direction of the prefabricated assembled concrete honeycomb steel bridge deck, and sleeves 5 are passed through the sleeve holes, and carbon fiber rods 6 are arranged in the sleeves 5; bolt connection holes 7 are opened at the ends of the baffles 4 at both ends of the transverse direction of the prefabricated assembled concrete honeycomb steel bridge deck.
[0040] The prefabricated assembled concrete honeycomb steel bridge deck in this embodiment has better integrity due to the presence of the internal honeycomb steel plate, and can also improve local stress and increase the bearing capacity of the bridge deck; the carbon fiber rods have good mechanical properties and are corrosion-resistant, and their use to apply prestress can increase the service life of the bridge deck; the concrete layer is poured and cured in the factory, which greatly reduces the workload and maintenance costs of pouring at the construction site, and a good maintenance environment also improves the quality of the concrete layer; the use of assembled bridge decks will also greatly improve construction efficiency.
[0041] Furthermore, the honeycomb steel plate 2 is provided with openings along its transverse direction, and perforated steel bars 8 are penetrated in the openings, which play the role of PBL shear keys and improve the integrity of the bridge deck.
[0042] Specifically, the overall structure of the honeycomb steel plate 2 is a square, and the honeycomb steel plates 2 with a square structure are more convenient to splice.
[0043] Furthermore, the honeycomb steel plate 2 and the lower base plate 1 are fixedly connected by welding.
[0044] In a specific implementation manner, the honeycomb steel plate 2 and the lower base plate 1 may also be fixed by plugging. Any method is applicable as long as it can achieve a fixed connection, and this embodiment does not limit this.
[0045] Furthermore, the concrete layer 3 is made of C50 self-compacting concrete, which has good fluidity, and is poured into the honeycomb steel plate 2, and then vibrated and cured.
[0046] Furthermore, the baffle plate 4 and the lower base plate 1 are fixedly connected by welding.
[0047] In a specific implementation manner, the baffle plate 4 and the lower base plate 1 may be fixed by plugging. Any method is applicable as long as it can achieve a fixed connection, and this embodiment does not limit this.
[0048] Furthermore, the lower base plate 1 is a steel plate with a thickness of 12 to 18 mm.
[0049] Specifically, the thickness of the lower base plate 1 is 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm or 18 mm, etc., and can be adjusted according to actual needs.
[0050] Furthermore, the thickness of the baffle plate 4 is 8-10 mm, and the height of the baffle plate 4 is 200-250 mm.
[0051] Specifically, the thickness of the baffle 4 is 8 mm, 9 mm or 10 mm, and the height of the baffle 4 is 200 mm, 210 mm, 220 mm, 230 mm, 240 mm, 250 mm, etc., which can be adjusted according to actual needs.
[0052] Furthermore, the prefabricated assembled concrete honeycomb steel bridge deck is made of thin steel plates with a thickness of 4 to 6 mm.
[0053] Specifically, the thickness of the prefabricated assembled concrete honeycomb steel bridge deck is 4 mm, 5 mm or 6 mm.
[0054] It should be noted that the specific material parameters and dimensions of the lower base plate 1, baffle 4, honeycomb steel plate 2 and C50 self-compacting concrete in this embodiment can be adjusted according to actual engineering requirements. As long as suitable cases can be improved and used, they can be applied to this embodiment, and the embodiments of this application do not limit this.
[0055] The construction and assembly process of the prefabricated assembled concrete honeycomb steel bridge deck of this embodiment is as follows:
[0056] (1) hoisting the prefabricated assembled concrete honeycomb steel bridge deck to the designated position and fixing it to the main beam; (2) splicing another prefabricated assembled concrete honeycomb steel bridge deck at the adjacent position of the prefabricated assembled concrete honeycomb steel bridge deck, fixing it with high-strength bolts at the bolt connection holes 7 on the side of the prefabricated assembled concrete honeycomb steel bridge deck, and welding the remaining contact surfaces; (3) after the splicing is completed, checking to ensure the strength of the connection; (4) inserting the carbon fiber rod 6 into the reserved sleeve 5, and then applying prestress, using the post-tensioning method.
[0057] It should be noted that in actual projects, the construction and assembly process may be adjusted accordingly due to certain factors, and the overall process will not change much. Any suitable case that can be improved and applied can be applied to this embodiment.
[0058] Example 2
[0059] like Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the structure of the prefabricated assembled concrete honeycomb steel bridge deck is hexagonal.
[0060] Example 3
[0061] like Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that the structure of the prefabricated assembled concrete honeycomb steel bridge deck is rhombus-shaped.
[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A prefabricated assembled concrete honeycomb steel bridge deck, characterized in that: It comprises a lower base plate (1), a honeycomb steel plate (2) is arranged on the top of the lower base plate (1), and a concrete layer (3) is poured in the hollow area of the honeycomb steel plate (2); Baffles (4) are arranged around the lower base plate (1); sleeve holes are opened on the baffles (4) at both ends of the longitudinal direction of the prefabricated assembled concrete honeycomb steel bridge deck, sleeves (5) are inserted into the sleeve holes, and carbon fiber rods (6) are arranged in the sleeves (5); bolt connection holes (7) are opened at the ends of the baffles (4) at both ends of the transverse direction of the prefabricated assembled concrete honeycomb steel bridge deck.
2. The prefabricated assembled concrete honeycomb steel bridge deck according to claim 1, characterized in that: The honeycomb steel plate (2) is provided with openings along its transverse direction, and perforated steel bars (8) are inserted into the openings.
3. The prefabricated assembled concrete honeycomb steel bridge deck according to claim 1, characterized in that: The overall structure of the honeycomb steel plate (2) is hexagonal, square or rhombus-shaped.
4. The prefabricated assembled concrete honeycomb steel bridge deck according to claim 1, characterized in that: The honeycomb steel plate (2) and the lower base plate (1) are fixedly connected by welding.
5. The prefabricated assembled concrete honeycomb steel bridge deck according to claim 1, characterized in that: The concrete layer (3) is made of C50 self-compacting concrete.
6. The prefabricated assembled concrete honeycomb steel bridge deck according to claim 1, characterized in that: The baffle plate (4) and the lower base plate (1) are fixedly connected by welding.
7. The prefabricated assembled concrete honeycomb steel bridge deck according to claim 1, characterized in that: The lower base plate (1) is a steel plate with a thickness of 12 to 18 mm.
8. The prefabricated assembled concrete honeycomb steel bridge deck according to claim 1, characterized in that: The thickness of the baffle (4) is 8 to 10 mm, and the height of the baffle (4) is 200 to 250 mm.
9. The prefabricated assembled concrete honeycomb steel bridge deck according to claim 1, characterized in that: The prefabricated assembled concrete honeycomb steel bridge deck is made of thin steel plates with a thickness of 4 to 6 mm.
10. A construction and assembly method for the prefabricated assembled concrete honeycomb steel bridge deck according to any one of claims 1 to 9, characterized in that: The following steps are involved: (1) hoisting the prefabricated assembled concrete honeycomb steel bridge deck to a designated location and connecting and fixing it to the main beam; (2) splicing another prefabricated assembled concrete honeycomb steel bridge deck at an adjacent position of the prefabricated assembled concrete honeycomb steel bridge deck, fixing it with high-strength bolts at the bolt connection holes (7) on the side of the prefabricated assembled concrete honeycomb steel bridge deck, and welding the remaining contact surfaces; (3) After completing the splicing, check to ensure the strength of the connection; (4) The carbon fiber rod (6) is inserted into the reserved sleeve (5), and then prestress is applied by using the post-tensioning method.