A combined bridge deck structure and construction method

Abstract

The present invention provides a composite bridge deck structure and a construction method, belonging to the technical field of corrugated steel. It includes a three-dimensional corrugated steel sandwich beam, a steel mesh and a concrete paving layer; the three-dimensional corrugated steel sandwich beam includes a corrugated steel bottom plate, a three-dimensional corrugated steel plate and a corrugated steel top plate; the three-dimensional corrugated steel plate includes a plate body, a main waveform and an auxiliary waveform, and the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate are the same as the corrugation direction of the auxiliary waveform; the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate are the same as the transverse bridge direction of the bridge deck structure; the steel mesh is horizontally arranged and installed above the corrugated steel top plate; the concrete paving layer is poured on the corrugated steel bottom plate and the steel mesh. The composite bridge deck structure provided by the present invention improves the bearing capacity and impact resistance of the bridge deck structure by means of the corrugated steel bottom plate, the three-dimensional corrugated steel plate and the corrugated steel top plate, and the stress of the bridge deck structure is more reasonable, so that the bridge deck structure is not prone to cracking.

Description

Technical Field

[0001] The present invention belongs to the technical field of corrugated steel, and more specifically, relates to a composite bridge deck structure and a construction method thereof. Background Art

[0002] The bridge deck structure is a key component of the bridge structure. The bridge deck directly bears the repeated action of various types of vehicle loads and pedestrian loads, and undertakes the role of transferring various loads on the bridge deck to the main beam. It is one of the vulnerable parts of the bridge structure. At present, most highway bridge decks are built with reinforced concrete. Although this kind of bridge deck has high stiffness, it also has a large self-weight. And due to the existence of negative bending moment, the concrete bears tensile stress, resulting in the cracking of the concrete slab and affecting the durability of the structure.

[0003] In order to reduce the weight of the bridge deck structure, increase the spanning ability of the bridge, and facilitate prefabricated construction, under the guidance of national policies, the adaptability of steel-concrete composite structures in long-span bridges, prefabricated bridges and other structures has been increasingly concerned. At present, there are various forms of steel-concrete composite bridge structures, but the bridge deck structure of the bridge is prone to fatigue cracking under long-term load, and the mechanical properties of the bridge deck structure are poor. Summary of the Invention

[0004] The purpose of the present invention is to provide a composite bridge deck structure and a construction method thereof, so as to solve the technical problem that the bridge deck structure in the prior art is prone to fatigue cracking under long-term load.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: to provide a composite bridge deck structure, including a three-dimensional corrugated steel sandwich beam, a steel mesh and a concrete paving layer arranged in sequence from bottom to top;

[0006] The three-dimensional corrugated steel sandwich beam includes a corrugated steel bottom plate, a three-dimensional corrugated steel plate fixedly installed on the corrugated steel bottom plate, and a corrugated steel top plate fixedly installed on the three-dimensional corrugated steel plate; the three-dimensional corrugated steel plate includes a plate body, a main waveform arranged on the plate body, and a plurality of auxiliary waveforms arranged on the plate body, and the corrugation direction of the main waveform is perpendicular to the corrugation direction of the auxiliary waveform; the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate are the same as the corrugation direction of the auxiliary waveform; the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate are the same as the transverse direction of the bridge deck structure;

[0007] The steel mesh is horizontally arranged and installed above the corrugated steel top plate; there is a filling space between the steel mesh and the corrugated steel top plate;

[0008] The concrete paving layer is poured on the corrugated steel bottom plate and the steel mesh; the upper end surface of the concrete paving layer is higher than the steel mesh.

[0009] In a possible implementation, the three-dimensional corrugated steel sandwich beam further includes a plurality of shear connectors. The lower end of each shear connector is fixedly connected to the corrugated steel top plate and extends vertically upward toward the steel mesh. The steel mesh and the shear connectors are located within the concrete paving layer.

[0010] In a possible implementation, the lower end of the shear connector is fixed in the trough of the corrugated steel top plate.

[0011] In a possible implementation, the spacing between two adjacent shear connectors is the wave pitch of the corrugated steel top plate.

[0012] In a possible implementation, the wave pitches of the corrugated steel top plate and the corrugated steel bottom plate are the same as or in a multiple relationship with the wave pitch of the three-dimensional corrugated steel plate.

[0013] In a possible implementation, the steel mesh includes longitudinally ribbed steel bars along the bridge direction and transversely ribbed steel bars arranged crosswise with the longitudinally ribbed steel bars. The longitudinally ribbed steel bars and the transversely ribbed steel bars are connected by binding. The shear connectors are connected to the longitudinally ribbed steel bars and the transversely ribbed steel bars.

[0014] In a possible implementation, both the corrugated steel bottom plate and the corrugated steel top plate are trapezoidal corrugated steel plates, and their wave pitches are the same. The crest of the corrugated steel bottom plate is connected to the trough of the auxiliary waveform, and the trough of the corrugated steel top plate is connected to the crest of the auxiliary waveform. The corrugated steel bottom plate and the three-dimensional corrugated steel plate, as well as the corrugated steel top plate and the three-dimensional corrugated steel plate, are locked and fixed with bolts and nuts.

[0015] In a possible implementation, the concrete paving layer is made of rubber concrete material.

[0016] In a possible implementation, anti-corrosion layers are provided on the outer sides of the corrugated steel bottom plate, the three-dimensional corrugated steel plate, and the corrugated steel top plate, and sealant is provided at the joints between the corrugated steel bottom plate and the three-dimensional corrugated steel plate, as well as between the corrugated steel top plate and the three-dimensional corrugated steel plate.

[0017] The beneficial effects of the composite bridge deck structure provided by the present invention are as follows: Compared with the prior art, in the composite bridge deck structure of the present invention, a corrugated steel bottom plate, a three-dimensional corrugated steel plate, and a corrugated steel top plate are used to form the load-bearing beam of the bridge deck structure, and the corrugation directions of the corrugated steel bottom plate, the corrugated steel top plate, and the auxiliary corrugations in the three-dimensional corrugated steel plate are the same, and the corrugated steel bottom plate, the three-dimensional corrugated steel plate, and the corrugated steel top plate are fixedly connected; then a steel mesh is installed on the upper side of the corrugated steel top plate, and a concrete paving layer is poured on the corrugated steel top plate and the steel mesh. Under the action of the steel mesh and the concrete paving layer, the corrugated steel bottom plate, the three-dimensional corrugated steel plate, the corrugated steel top plate, and the steel mesh are connected as a whole; by means of the corrugated steel bottom plate, the three-dimensional corrugated steel plate, and the corrugated steel top plate, the load-bearing capacity and impact resistance of the bridge deck structure are improved, and the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate are consistent with the transverse direction of the bridge deck structure, and the main waveform of the three-dimensional corrugated steel plate is perpendicular to the corrugation direction of the corrugated steel bottom plate, thus forming an orthotropic composite bridge deck structure, which also makes the stress of the bridge deck structure more reasonable, improves the load-bearing performance and impact resistance of the bridge deck structure, and thus makes the bridge deck structure not prone to cracking.

[0018] Another object of the present invention is to provide a construction method of a composite bridge deck structure, including the composite bridge deck structure of any one of the above, and further including:

[0019] Process the corrugated steel bottom plate, the three-dimensional corrugated steel plate, and the corrugated steel top plate, and set connecting parts at the wave crests of the corrugated steel bottom plate, the wave troughs and wave crests of the auxiliary waveforms of the three-dimensional corrugated steel plate, and the wave troughs of the corrugated steel top plate;

[0020] Arrange the corrugated steel bottom plate, the three-dimensional corrugated steel plate, and the corrugated steel top plate in sequence from bottom to top, and adjust the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate to be consistent with the corrugation direction of the auxiliary waveform;

[0021] Adjust the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate to be consistent with the transverse direction of the bridge deck structure;

[0022] Use fasteners and the connecting parts to fixedly connect the corrugated steel bottom plate, the three-dimensional corrugated steel plate, and the corrugated steel top plate in sequence;

[0023] Horizontally arrange the steel mesh and install it on the corrugated steel top plate, and there is a filling space between the upper end of the steel mesh and the corrugated steel top plate;

[0024] Pour the concrete paving layer on the corrugated steel top plate and the steel mesh, the concrete paving layer fills the filling space, and the concrete paving layer is higher than the steel mesh, so that the corrugated steel top plate and the steel mesh are connected as a whole.

[0025] The construction method of the composite bridge deck structure provided by the present invention adopts a composite bridge deck structure, and under the action of the steel mesh and the concrete paving layer, the corrugated steel bottom plate, the three-dimensional corrugated steel plate, the corrugated steel top plate and the steel mesh are connected into a whole; by means of the corrugated steel bottom plate, the three-dimensional corrugated steel plate and the corrugated steel top plate, the bearing capacity and impact resistance of the bridge deck structure are improved, and the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate are consistent with the transverse direction of the bridge deck structure, and the main waveform of the three-dimensional corrugated steel plate is perpendicular to the corrugation direction of the corrugated steel bottom plate, thus forming an orthotropic composite bridge deck structure, which also makes the stress of the bridge deck structure more reasonable, improves the bearing performance and impact resistance of the bridge deck structure, and thus makes the bridge deck structure not easy to crack. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 is a schematic structural diagram of the composite bridge deck structure provided by the embodiment of the present invention;

[0028] Figure 2 is a cross-section of the composite bridge deck structure provided by the embodiment of the present invention Figure 1 ;

[0029] Figure 3 is Figure 2 an enlarged view of part A in

[0030] Figure 4 is a cross-section of the composite bridge deck structure provided by the embodiment of the present invention Figure 2 .

[0031] Among them, the reference numerals in the drawings are as follows:

[0032] 1, three-dimensional corrugated steel sandwich beam; 11, corrugated steel bottom plate; 12, three-dimensional corrugated steel plate; 13, corrugated steel top plate; 14, shear connector; 15, bolt; 2, steel mesh; 21, longitudinally ribbed steel bar; 22, transversely ribbed steel bar; 3, concrete paving layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0037] Please refer to Figures 1 to 4 , and now the composite bridge deck structure provided by the present invention will be described. A composite bridge deck structure includes a three-dimensional corrugated steel sandwich beam 1, a steel mesh 2, and a concrete paving layer 3 arranged in sequence from bottom to top;

[0038] The three-dimensional corrugated steel sandwich beam 1 includes a corrugated steel bottom plate 11, a three-dimensional corrugated steel plate 12 fixedly installed on the corrugated steel bottom plate 11, and a corrugated steel top plate 13 fixedly installed on the three-dimensional corrugated steel plate 12; the three-dimensional corrugated steel plate 12 includes a plate body, a main waveform provided on the plate body, and a plurality of auxiliary waveforms provided on the plate body. The corrugation direction of the main waveform is perpendicular to the corrugation direction of the auxiliary waveforms; the corrugation directions of the corrugated steel bottom plate 11 and the corrugated steel top plate 13 are the same as the corrugation direction of the auxiliary waveforms; the corrugation directions of the corrugated steel bottom plate 11 and the corrugated steel top plate 13 are the same as the transverse bridge direction of the bridge deck structure;

[0039] The steel mesh 2 is horizontally arranged and installed above the corrugated steel top plate 13; there is a filling gap between the steel mesh 2 and the corrugated steel top plate 13;

[0040] The concrete paving layer 3 is poured on the corrugated steel bottom plate 11 and the steel mesh 2; the upper end surface of the concrete paving layer 3 is higher than the steel mesh 2.

[0041] Compared with the prior art, the composite bridge deck structure provided by the present invention uses a corrugated steel bottom plate 11, a three-dimensional corrugated steel plate 12 and a corrugated steel top plate 13 to form a load-bearing beam of the bridge deck structure. The corrugation directions of the corrugated steel bottom plate 11, the corrugated steel top plate 13 and the auxiliary corrugations in the three-dimensional corrugated steel plate 12 are the same, and the corrugated steel bottom plate 11, the three-dimensional corrugated steel plate 12 and the corrugated steel top plate 13 are fixedly connected. Then, a steel mesh 2 is installed on the upper side of the corrugated steel top plate 13, and a concrete paving layer 3 is poured on the corrugated steel top plate 13 and the steel mesh 2. Under the action of the steel mesh 2 and the concrete paving layer 3, the corrugated steel bottom plate 11, the three-dimensional corrugated steel plate 12, the corrugated steel top plate 13 and the steel mesh 2 are connected into a whole. By means of the corrugated steel bottom plate 11, the three-dimensional corrugated steel plate 12 and the corrugated steel top plate 13, the load-bearing capacity and impact resistance of the bridge deck structure are improved. The corrugation directions of the corrugated steel bottom plate 11 and the corrugated steel top plate 13 are consistent with the transverse direction of the bridge deck structure, and the main waveform of the three-dimensional corrugated steel plate 12 is perpendicular to the corrugation direction of the corrugated steel bottom plate 11, thus forming an orthotropic composite bridge deck structure, which also makes the stress of the bridge deck structure more reasonable, improves the load-bearing performance and impact resistance of the bridge deck structure, and thus makes the bridge deck structure not prone to cracking.

[0042] This composite bridge deck structure is a lightweight and high-performance orthotropic composite bridge deck structure, which has the advantages of high stiffness-to-weight ratio, good vibration damping and energy dissipation, and good anti-explosion performance. It can effectively resist the impact force of vehicle loads on the road and is convenient for prefabricated construction.

[0043] Please refer to Figures 1 to 4 , as a specific embodiment of the composite bridge deck structure provided by the present invention, the three-dimensional corrugated steel sandwich beam 1 further includes a plurality of shear connectors 14. The lower ends of the shear connectors 14 are fixedly connected to the corrugated steel top plate 13 and extend vertically upward towards the steel mesh 2. The steel mesh 2 and the shear connectors 14 are located in the concrete paving layer 3. The shear connectors 14 are vertically arranged, and the lower ends of the shear connectors 14 are welded and fixed to the corrugated steel top plate 13 and extend upward. The upper ends of the shear connectors 14 are arranged close to the steel mesh 2, or the upper ends of the shear connectors 14 are fixedly connected to the steel mesh 2, and then the concrete paving layer 3 is poured on the corrugated steel top plate 13 and the steel mesh 2. By means of the shear connectors 14, after the concrete paving layer 3 is set, the corrugated steel top plate 13 and the steel mesh 2 are connected into a whole, realizing the common stress of the three, and being able to resist the action of transverse and longitudinal shear forces and vertical uplift.

[0044] Please refer to Figure 1 and Figure 4, as a specific embodiment of the composite bridge deck structure provided by the present invention, the lower end of the shear connector 14 is fixed in the trough of the corrugated steel top plate 13; that is, the lower end of the shear connector 14 is in the trough of the corrugated steel top plate 13 and is fixedly connected to the corrugated steel top plate 13. Therefore, the effective working length of the shear connector 14 is relatively large, thereby improving the integrity of the shear connector 14 with the corrugated steel top plate 13 and the steel mesh 2 in the concrete paving layer 3, so that greater external forces can be borne.

[0045] Please refer to Figure 1 and Figure 4 , as a specific embodiment of the composite bridge deck structure provided by the present invention, the spacing between two adjacent shear connectors 14 is the wave pitch of the corrugated steel top plate 13; a plurality of shear connectors 14 are arranged in a rectangular array, and the lower ends are all welded and fixedly connected to the troughs of the corrugated steel top plate 13, and shear connectors 14 are arranged in each trough of the corrugated steel top plate 13, so as to achieve the purpose that the spacing between two adjacent shear connectors 14 is equal to the wave pitch of the corrugated steel top plate 13. In this way, the presence of the shear connectors 14 makes the concrete paving layer 3 and the three-dimensional corrugated steel sandwich beam 1 form an integral body, realizing common force bearing and being able to resist the action of transverse and longitudinal shear forces as well as vertical uplift. By means of arranging the shear connectors 14 more densely, the connection between the corrugated steel top plate 13, the steel mesh 2 and the concrete paving layer 3 is also more reliable. In order to reduce the residual stress caused by excessive fusion welding when the shear connectors 14 are welded to the corrugated steel top plate 13 and ensure the reliability of the connection between the two, the spacing of the shear connectors 14 should be reasonably arranged.

[0046] Please refer to Figure 1 and Figure 4 , as a specific embodiment of the composite bridge deck structure provided by the present invention, the wave pitches of the corrugated steel top plate 13 and the corrugated steel bottom plate 11 are the same as or in a multiple relationship with the wave pitch of the three-dimensional corrugated steel plate 12; when the three-dimensional corrugated steel plate 12 is installed on the corrugated steel bottom plate 11 and the corrugated steel top plate 13 is installed on the three-dimensional corrugated steel plate 12, since the wave pitches of the three are equal or in a multiple relationship, the number of connection positions between the corrugated steel top plate 13 and the three-dimensional corrugated steel plate 12, and between the three-dimensional corrugated steel plate 12 and the corrugated steel bottom plate 11 is relatively large and more uniform. After using the high-strength bolts 15 to fixedly connect the corrugated steel top plate 13, the corrugated steel bottom plate 11 and the three-dimensional corrugated steel plate 12 together, the stiffness of the entire composite bridge deck structure is higher.

[0047] Please refer to Figures 1 to 4, as a specific implementation of the composite bridge deck structure provided by the present invention, the steel mesh 2 includes longitudinally ribbed steel bars 21 and transversely ribbed steel bars 22 arranged crosswise with the longitudinally ribbed steel bars 21, and the longitudinally ribbed steel bars 21 and the transversely ribbed steel bars 22 are tied and connected; the shear connectors 14 are connected to the longitudinally ribbed steel bars 21 and the transversely ribbed steel bars 22; the longitudinally ribbed steel bars 21 and the transversely ribbed steel bars 22 are perpendicularly crossed and fixedly connected to form a mesh structure, and the longitudinally ribbed steel bars 21 and the transversely ribbed steel bars 22 are connected by tying, and the longitudinally ribbed steel bars 21, the transversely ribbed steel bars 22 and the shear connectors 14 intersect and are fixed by spot welding. By means of the length of the shear connectors 14, a gap is provided between the steel mesh 2 and the corrugated steel top plate, and finally the concrete paving layer 3 is poured, and the concrete paving layer 3 wraps the steel mesh 2 and the shear connectors 14. The composite bridge deck structure innovatively selects rubber concrete materials, which can enhance the energy dissipation and vibration suppression capabilities of the composite bridge deck structure, and improve the safety and driving comfort of the composite bridge deck structure.

[0048] Please refer to Figures 1 to 4 , as a specific implementation of the composite bridge deck structure provided by the present invention, both the corrugated steel bottom plate 11 and the corrugated steel top plate 13 are trapezoidal corrugated steel plates, and the corrugation pitches of the corrugated steel bottom plate 11 and the corrugated steel top plate 13 are the same; the wave crest of the corrugated steel bottom plate 11 is connected to the wave trough of the auxiliary waveform, and the wave trough of the corrugated steel top plate 13 is connected to the wave crest of the auxiliary waveform; the corrugated steel bottom plate 11 and the three-dimensional corrugated steel plate 12, and the corrugated steel top plate 13 and the three-dimensional corrugated steel plate 12 are both fixed by bolts 15 and nuts; due to the undulating nature of the trapezoidal corrugated steel plate, that is, the wave crests and wave troughs of the corrugated steel bottom plate 11 and the corrugated steel top plate 13 have planes, the connection between the corrugated steel bottom plate 11 and the three-dimensional corrugated steel plate 12, and the corrugated steel top plate 13 and the three-dimensional corrugated steel plate 12 is more reliable. The corrugated steel bottom plate 11 and the three-dimensional corrugated steel plate 12, and the corrugated steel top plate 13 and the three-dimensional corrugated steel plate 12 are fixedly connected together by bolts 15 and nuts, and the bolts 15 or nuts act on the plane, making the connection of the bolts 15 and nuts more stable. By virtue of the advantages of the trapezoidal corrugated steel plate such as strong bending bearing capacity, it is more beneficial to the stress of the bridge deck structure. The bolts 15 are high-strength bolts 15. By using high-strength bolts 15, the overall stiffness of the entire composite bridge deck structure is increased. The high-strength bolts 15 have mechanical characteristics such as good shear bearing capacity, shear stiffness and good ductility, and have the characteristics of easy installation and disassembly. Therefore, the application of high-strength bolts 15 to the connection between the corrugated steel bottom plate 11 and the three-dimensional corrugated steel plate 12, and the corrugated steel top plate 13 and the three-dimensional corrugated steel plate 12 has certain advantages in prefabricated rapid construction.

[0049] Please refer to Figure 1 , Figure 2 and Figure 4, as a specific implementation of the composite bridge deck structure provided by the present invention, the concrete paving layer 3 is made of rubber concrete. Using rubber concrete as the material of the concrete paving layer 3 further improves the bearing capacity of the composite bridge deck structure, and also enhances its vibration damping and energy dissipation capacity and the crack resistance of the bridge deck structure.

[0050] Please refer to Figure 1 , as a specific implementation of the composite bridge deck structure provided by the present invention, anti-corrosion layers are provided on the outer sides of the corrugated steel bottom plate 11, the three-dimensional corrugated steel plate 12 and the corrugated steel top plate 13. Sealants are provided at the joints between the corrugated steel bottom plate 11 and the three-dimensional corrugated steel plate 12, and between the corrugated steel top plate 13 and the three-dimensional corrugated steel plate 12; the surfaces of the corrugated steel bottom plate 11, the three-dimensional corrugated steel plate 12 and the corrugated steel top plate 13 are subjected to hot-dip galvanizing treatment, so that the corrugated steel bottom plate 11, the three-dimensional corrugated steel plate 12 and the corrugated steel top plate 13 have high anti-corrosion performance, and thus work safely and reliably. At the same time, when the corrugated steel bottom plate 11 and the three-dimensional corrugated steel plate 12 are fixedly connected by bolts 15 and nuts, connection holes are opened at the joint between the corrugated steel bottom plate 11 and the three-dimensional corrugated steel plate 12, and the bolts 15 are passed through the connection holes and locked and fixed with nuts. Structural adhesive is used for sealing at the joints of the bolts 15 and nuts to increase the connection tightness of the corrugated steel bottom plate 11 and the overall mechanical performance of the composite bridge deck structure. Similarly, when the corrugated steel top plate 13 and the three-dimensional corrugated steel plate 12 are fixedly connected by bolts 15 and nuts, connection holes are opened at the joint between the corrugated steel top plate 13 and the three-dimensional corrugated steel plate 12, and the bolts 15 are passed through the connection holes and locked and fixed with nuts. Structural adhesive is used for sealing at the joints of the bolts 15 and nuts to increase the connection tightness of the corrugated steel top plate 13 and the overall mechanical performance of the composite bridge deck structure.

[0051] Not shown in the figure, the embodiment of the present invention also provides a construction method for a composite bridge deck structure. The construction method for the composite bridge deck structure includes any one of the above-mentioned composite bridge deck structures, and further includes:

[0052] Processing the corrugated steel bottom plate 11, the three-dimensional corrugated steel plate 12 and the corrugated steel top plate 13, and providing connection parts at the wave crests of the corrugated steel bottom plate 11, the wave troughs, wave crests of the auxiliary waveforms of the three-dimensional corrugated steel plate 12, and the wave troughs of the corrugated steel top plate 13;

[0053] Arranging the corrugated steel bottom plate 11, the three-dimensional corrugated steel plate 12 and the corrugated steel top plate 13 in sequence from bottom to top, and adjusting the corrugation directions of the corrugated steel bottom plate 11 and the corrugated steel top plate 13 to be consistent with the corrugation direction of the auxiliary waveform;

[0054] Adjusting the corrugation directions of the corrugated steel bottom plate 11 and the corrugated steel top plate 13 to be consistent with the transverse direction of the bridge deck structure;

[0055] Use fasteners and the connecting part to fixedly connect the corrugated steel bottom plate 11, the three-dimensional corrugated steel plate 12 and the corrugated steel top plate 13 in sequence;

[0056] Horizontally arrange the steel mesh 2 and install it on the corrugated steel top plate 13, and there is a filling space between the upper end of the steel mesh 2 and the corrugated steel top plate 13;

[0057] Pour the concrete paving layer 3 on the corrugated steel top plate 13 and the steel mesh 2. The concrete paving layer 3 fills the filling space and is higher than the steel mesh 2, so that the corrugated steel top plate 13 and the steel mesh 2 are integrated.

[0058] The construction method of the composite bridge deck structure provided by the embodiment of the present invention adopts the above-mentioned composite bridge deck structure. Under the action of the steel mesh 2 and the concrete paving layer 3, the corrugated steel bottom plate 11, the three-dimensional corrugated steel plate 12, the corrugated steel top plate 13 and the steel mesh 2 are integrated; by means of the corrugated steel bottom plate 11, the three-dimensional corrugated steel plate 12 and the corrugated steel top plate 13, the bearing capacity and impact resistance of the bridge deck structure are improved, and the corrugation directions of the corrugated steel bottom plate 11 and the corrugated steel top plate 13 are consistent with the transverse direction of the bridge deck structure, and the main waveform of the three-dimensional corrugated steel plate 12 is perpendicular to the corrugation direction of the corrugated steel bottom plate 11, thus forming an orthotropic composite bridge deck structure, which also makes the stress of the bridge deck structure more reasonable, improves the bearing performance and impact resistance of the bridge deck structure, and thus makes the bridge deck structure not prone to cracking.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A composite bridge deck structure, characterized in that, It includes a three-dimensional corrugated steel sandwich beam, a steel bar mesh, and a concrete paving layer arranged successively from bottom to top; The three-dimensional corrugated steel sandwich beam includes a corrugated steel bottom plate, a three-dimensional corrugated steel plate fixedly installed on the corrugated steel bottom plate, and a corrugated steel top plate fixedly installed on the three-dimensional corrugated steel plate; the three-dimensional corrugated steel plate includes a plate body, a main waveform provided on the plate body, and a plurality of auxiliary waveforms provided on the plate body, and the corrugation direction of the main waveform is perpendicular to the corrugation direction of the auxiliary waveform; the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate are the same as the corrugation direction of the auxiliary waveform; the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate are the same as the transverse bridge direction of the bridge deck structure; The steel bar mesh is horizontally arranged and installed above the corrugated steel top plate; there is a filling space between the steel bar mesh and the corrugated steel top plate; The concrete paving layer is poured on the corrugated steel bottom plate and the steel bar mesh; the upper end surface of the concrete paving layer is higher than the steel bar mesh.

2. The composite bridge deck structure according to claim 1, characterized in that, The three-dimensional corrugated steel sandwich beam further includes a plurality of shear connectors, the lower ends of the shear connectors are fixedly connected to the corrugated steel top plate and extend vertically upward towards the steel bar mesh; the steel bar mesh and the shear connectors are located in the concrete paving layer.

3. The composite bridge deck structure according to claim 2, characterized in that, The lower end of the shear connector is fixed in the trough of the corrugated steel top plate.

4. The composite bridge deck structure according to claim 3, characterized in that, The distance between two adjacent shear connectors is the wave pitch of the corrugated steel top plate.

5. The composite bridge deck structure according to claim 2, characterized in that, The wave pitches of the corrugated steel top plate and the corrugated steel bottom plate are the same as or in a multiple relationship with the wave pitch of the three-dimensional corrugated steel plate.

6. The composite bridge deck structure according to claim 2, characterized in that, The steel bar mesh includes longitudinally ribbed steel bars along the bridge direction and transversely ribbed steel bars arranged crosswise with the longitudinally ribbed steel bars along the bridge direction, and the longitudinally ribbed steel bars and the transversely ribbed steel bars are tied and connected; the shear connectors are connected to the longitudinally ribbed steel bars and the transversely ribbed steel bars.

7. The composite bridge deck structure according to claim 1, characterized in that, Both the corrugated steel bottom plate and the corrugated steel top plate are trapezoidal corrugated steel plates, and the wave pitches of the corrugated steel bottom plate and the corrugated steel top plate are the same; the wave crest of the corrugated steel bottom plate is connected to the trough of the auxiliary waveform, and the trough of the corrugated steel top plate is connected to the wave crest of the auxiliary waveform; the corrugated steel bottom plate and the three-dimensional corrugated steel plate, and the corrugated steel top plate and the three-dimensional corrugated steel plate are locked and fixed by bolts and nuts.

8. The composite bridge deck structure according to claim 1, characterized in that, The concrete paving layer is made of rubber concrete material.

9. The composite bridge deck structure according to claim 1, characterized in that, Anticorrosion layers are provided on the outer side surfaces of the corrugated steel bottom plate, the three-dimensional corrugated steel plate, and the corrugated steel top plate, and sealant is provided at the joints between the corrugated steel bottom plate and the three-dimensional corrugated steel plate, and between the corrugated steel top plate and the three-dimensional corrugated steel plate.

10. A construction method of a composite bridge deck structure, characterized in that, It includes the combined bridge deck structure according to any one of claims 1-9, and further includes: Processing the corrugated steel bottom plate, the three-dimensional corrugated steel plate, and the corrugated steel top plate, and providing connecting parts at the wave crest of the corrugated steel bottom plate, the trough and wave crest of the auxiliary waveform of the three-dimensional corrugated steel plate, and the trough of the corrugated steel top plate; Arrange the corrugated steel bottom plate, the three-dimensional corrugated steel plate, and the corrugated steel top plate in sequence from bottom to top, and adjust the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate to be consistent with the corrugation direction of the auxiliary waveform; Adjust the corrugation directions of the corrugated steel bottom plate and the corrugated steel top plate to be consistent with the transverse direction of the bridge deck structure; Use fasteners and the connecting parts to fixedly connect the corrugated steel bottom plate, the three-dimensional corrugated steel plate, and the corrugated steel top plate in sequence; Horizontally arrange the steel mesh and install it on the corrugated steel top plate, and there is a filling space between the steel mesh and the upper end of the corrugated steel top plate; Pour the concrete paving layer on the corrugated steel top plate and the steel mesh. The concrete paving layer fills the filling space, and the concrete paving layer is higher than the steel mesh, so that the corrugated steel top plate and the steel mesh are integrated.

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