A prefabrication method for a composite beam

Abstract

The present invention relates to the technical field of bridge erection, and provides a prefabrication method for composite beams, where the composite beams are used for bridge erection. The prefabrication method for composite beams includes: prefabricating steel beams, intermediate cross connections, and composite beam jigs according to the segment information of the bridge; connecting the prefabricated steel beams to the composite beam jigs; connecting the prefabricated intermediate cross connections between two bays of the steel beams; pouring a concrete bridge deck on the steel beams; removing the intermediate cross connections and demolding the steel beams from the composite beam jigs to obtain two bays of the matching composite beams. The prefabrication method for composite beams of the present invention is highly consistent with the slope, span and other index requirements of the actual bridge segments for composite beams of bridges with large bridge segment spans and a certain slope, thereby improving the quality and operation efficiency of the composite beams, and further improving the quality and construction efficiency of bridge erection.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge erection, and more particularly, to a prefabrication method for composite beams. Background Art

[0002] In bridge erection construction, composite beams are commonly used as the load-bearing main body of bridges. A composite beam generally refers to a load-bearing member formed by connecting a steel beam and a concrete slab as a whole to jointly bear the load, which can give full play to the advantages of good tensile performance of steel and good compressive performance of concrete, and has the advantages of high bearing capacity, large stiffness, good seismic and dynamic performance, small cross-sectional size of components, and convenient construction. The existing composite beam manufacturing method generally involves fabricating a concrete bridge deck in a factory and transporting it to the construction site. After splicing the steel beams at the construction site, the concrete bridge deck is connected to the steel beam, and each concrete bridge deck is connected into a whole.

[0003] However, for the above-mentioned existing composite beam manufacturing method, for composite beams used in bridge erection with large bridge section spans and a certain slope of the bridge deck, due to the large span, the transportation and assembly of engineering accessories during on-site construction are time-consuming and laborious. Moreover, after multiple on-site assembly connections of concrete bridge decks, it is difficult to guarantee the quality, and for the slope requirement, it is also difficult for the existing composite beam manufacturing method to meet its accuracy requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: how to improve the quality and construction efficiency of composite beams for bridges with large bridge section spans and slopes.

[0005] The present invention provides a prefabrication method for composite beams, which is applied to composite beams for bridge erection. The prefabrication method for composite beams includes:

[0006] Prefabricating a steel beam, an intermediate cross connection and a composite beam formwork according to the section information of the bridge;

[0007] Connecting the prefabricated steel beam to the composite beam formwork;

[0008] Connecting the prefabricated intermediate cross connection between two steel beams;

[0009] Pouring a concrete bridge deck on the steel beam;

[0010] Removing the intermediate cross connection and detaching the steel beam from the composite beam formwork to obtain two matching composite beams.

[0011] Optionally, before prefabricating the steel beam, the intermediate cross connection and the composite beam formwork according to the section information of the bridge, the prefabrication method for composite beams further includes:

[0012] A construction site is constructed, and the construction site is used to be constructed on the roadbed at the bridgehead or the bridge tail of the bridge. The construction site includes a composite beam frame area and a beam storage area, and the base surface of the composite beam frame area is hardened.

[0013] Optionally, the prefabricating of steel beams, intermediate cross-joints and composite beam frames according to the segment information of the bridge includes:

[0014] A plurality of tire frame piers are arranged on the base surface of the composite beam tire frame area, and the plurality of tire frame piers are arranged and combined to form the composite beam tire frame and match the segment information of the bridge, and the tire frame piers are used for detachable connection with the steel beam.

[0015] Optionally, the segment information of the bridge includes the width, length and slope of a single bridge segment.

[0016] Optionally, the prefabricating of steel beams, intermediate cross-joints and composite beam frames according to the segment information of the bridge further includes:

[0017] Tracks are laid in the composite beam frame area and at both ends of the composite beam frame in the length direction along the width direction of the composite beam frame, and the tracks are used to transport the composite beam.

[0018] Optionally, the removing of the middle cross-joint and the removal of the steel beam from the composite beam frame to obtain two matching composite beams comprises:

[0019] Release the connection between the middle cross-joint and the two composite beams;

[0020] Release the connection between the composite beam and the composite beam frame;

[0021] The composite beam is transported to the beam storage area by a transverse transfer vehicle pre-installed on the track.

[0022] Optionally, the step of connecting the prefabricated steel beam to the composite beam frame comprises:

[0023] The two steel beams are sequentially hoisted onto the composite beam frame by a gantry truck and connected to the composite beam frame, and a space for installing the middle cross-joint is reserved between the two steel beams.

[0024] Optionally, the step of connecting the prefabricated intermediate cross-joint between the two steel beams comprises:

[0025] The middle cross-connection is hoisted between the two steel beams by a gantry truck, and is connected to the two steel beams located on both sides of the middle cross-connection in the width direction by bolts.

[0026] Optionally, the structure of the intermediate cross-connection is the same as that of the steel beam.

[0027] Optionally, pouring the concrete bridge deck on the steel girder includes:

[0028] Installing the steel bar mesh of the concrete bridge deck on the steel girder;

[0029] Setting up the formwork for the concrete bridge deck to ensure the shape of the concrete bridge deck;

[0030] Pouring concrete to obtain the concrete bridge deck with a set thickness.

[0031] Compared with the prior art, the composite beam prefabrication method provided by the present invention has the following technical effects:

[0032] When manufacturing the composite beam used for bridge erection, first prefabricate the steel girder, the intermediate cross connection and the composite beam jig according to the segment information of the bridge, and connect the prefabricated steel girder to the composite beam jig. According to the bridge segment information, for example, the width of the bridge segment, two steel girders can be connected side by side, and then connect the prefabricated intermediate cross connection between the two steel girders to form a steel girder group matching the bridge segment. At this time, then carry out the production of the concrete bridge deck, that is, pour the concrete bridge deck on the steel girder, and a concrete bridge deck meeting the index requirements such as slope and span consistent with the actual bridge segment can be obtained. Then remove the intermediate cross connection, and take the steel girder off the composite beam jig, and thus two composite beams matching the actual bridge segment are obtained. The composite beam prefabrication method of the present invention adopts the method of connecting the intermediate cross connection between two steel girders to form the actual bridge segment for processing and manufacturing the composite beam. For the composite beam of the bridge with a large span and a certain slope of the bridge segment, it is maximally consistent with the index requirements such as slope and span of the actual bridge segment. And after the pouring of the concrete bridge deck is completed, removing the intermediate cross connection can facilitate the transportation, storage and installation of each composite beam, thereby improving the quality and operation efficiency of the composite beam, and further improving the quality and construction efficiency of bridge erection. Description of the Drawings

[0033] Figure 1 It is a schematic flow chart of the composite beam prefabrication method of the embodiment of the present invention;

[0034] Figure 2 It is a schematic structural diagram of the factory building in the composite beam prefabrication method of the embodiment of the present invention;

[0035] Figure 3 It is a schematic plan view of the composite beam of the embodiment of the present invention;

[0036] Figure 4 It is a schematic plan view of the composite beam jig of the embodiment of the present invention.

[0037] Description of the reference numerals:

[0038] 1 - Composite beam, 11 - Steel beam, 12 - Concrete bridge deck, 2 - Intermediate cross - connection, 3 - Composite beam falsework, 31 - Falsework pier, 4 - Track, 5 - Transverse moving vehicle, 6 - Hoisting vehicle, 7 - Workshop. Detailed implementation mode

[0039] To make the above - mentioned objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention is provided in conjunction with the accompanying drawings.

[0040] It should be noted that the terms "first", "second", etc. in the description, claims and accompanying drawings of the present invention are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here.

[0041] In the description of the present invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "top", "bottom", "front", "rear", "inner" and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present disclosure, and does not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present disclosure. At the same time, an XYZ coordinate system is set up in this article, where the positive direction of the X - axis represents the right direction, the negative direction of the X - axis represents the left direction, the positive direction of the Y - axis represents the front direction, the negative direction of the Y - axis represents the rear direction, the positive direction of the Z - axis represents the upper direction, and the negative direction of the Z - axis represents the lower direction.

[0042] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "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; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the description of this specification, the descriptions referring to terms such as "embodiment", "one embodiment" and "one implementation mode" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or implementation mode are included in at least one embodiment or implementation mode of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or implementation mode. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or implementation modes.

[0044] To solve the above technical problems, as Figures 1 to 4 shown, an embodiment of the present invention provides a method for prefabricating a composite beam, which is applied to the composite beam 1 for bridge erection. The method for prefabricating the composite beam includes the following steps:

[0045] S1. Prefabricate a steel beam 11, an intermediate cross connection 2 and a composite beam jig 3 according to the segment information of the bridge;

[0046] S2. Connect the prefabricated steel beam 11 to the composite beam jig 3;

[0047] S3. Connect the prefabricated intermediate cross connection 2 between two steel beams 11;

[0048] S4. Pour a concrete bridge deck 12 on the steel beam 11;

[0049] S5. Remove the intermediate cross connection 2 and demold the steel beam 11 from the composite beam jig 3 to obtain two matching composite beams 1.

[0050] In this embodiment, when manufacturing the composite beam 1 used for bridge erection, first prefabricate the steel beam 11, the intermediate cross connection 2 and the composite beam jig 3 according to the segment information of the bridge, and connect the prefabricated steel beam 11 to the composite beam jig 3. Two steel beams 11 can be connected side by side according to the segment information of the bridge, such as the width of the bridge segment. Then connect the prefabricated intermediate cross connection 2 between the two steel beams 11 to form a steel beam group matching the bridge segment. At this time, then fabricate the concrete bridge deck 12, that is, pour the concrete bridge deck 12 on the steel beam 11, and a concrete bridge deck 12 meeting the index requirements such as slope and span consistent with the actual bridge segment can be obtained. Then remove the intermediate cross connection 2 and demold the steel beam 11 from the composite beam jig 3, and thus two composite beams 1 matching the actual bridge segment are obtained. The method for prefabricating the composite beam of the present invention adopts the method of connecting an intermediate cross connection 2 between two steel beams 11 to form the actual bridge segment to process and manufacture the composite beam 1. For the composite beam 1 of a bridge with a large span and a certain slope of the bridge segment, it is maximally consistent with the index requirements such as slope and span of the actual bridge segment. And after the concrete bridge deck 12 is poured, removing the intermediate cross connection 2 can facilitate the transportation, storage and installation of each composite beam 1, thereby improving the quality and operation efficiency of the composite beam 1, and further improving the quality and construction efficiency of bridge erection.

[0051] Specifically, the prefabricated steel girders 11 and the intermediate cross bracing 2 can be processed and manufactured in a factory and then transported to the workshop 7 at the bridge erection construction site. The composite beam falsework 3 can be arranged and prefabricated in the workshop 7 at the bridge erection construction site, which can further improve the quality of the composite beam 1 for bridge segments and the production efficiency of the composite beam 1, and also improve the construction efficiency of bridge erection.

[0052] Optionally, as Figure 2 shown, before prefabricating the steel girders 11, the intermediate cross bracing 2 and the composite beam falsework 3 according to the segment information of the bridge, the composite beam prefabrication method further includes:

[0053] Constructing a construction site, which is used to be built on the subgrade at the bridgehead or the bridge tail of the bridge. The construction site includes a composite beam falsework area and a beam storage area, and the base surface of the composite beam falsework area is hardened.

[0054] In this embodiment, by pre-constructing a construction site including a composite beam falsework area and a beam storage area at the bridgehead or the bridge tail of the bridge, and hardening the base surface of the composite beam falsework area. On the one hand, constructing the construction site at the bridge erection construction site can fabricate the composite beam 1 used for bridge erection nearby, which is convenient for bridge erection operations, and is also convenient for adjusting the parameters of fabricating the composite beam 1 on site according to the actual index requirements of the composite beam 1 used in the actual bridge segments, and is convenient for the transfer and installation of the composite beam 1. On the other hand, hardening the base surface of the composite beam falsework area further ensures the reference accuracy of on-site fabrication of the composite beam 1, thereby improving the fabrication accuracy of the composite beam 1 and the quality of the composite beam 1.

[0055] Optionally, as Figures 2 to 4 shown, the prefabricating the steel girders 11, the intermediate cross bracing 2 and the composite beam falsework 3 according to the segment information of the bridge includes:

[0056] Setting a plurality of falsework piers 31 on the base surface of the composite beam falsework area. The plurality of falsework piers 31 are arranged and combined to form the composite beam falsework 3, which is matched with the segment information of the bridge, and the falsework piers 31 are used for detachably connecting with the steel girders 11.

[0057] In this embodiment, by setting the composite beam falsework 3 as a combination of a plurality of falsework piers 31 and matching it with the segment information of the bridge, it can provide multi-point favorable support during the fabrication process of the composite beam 1, and can be adapted to the actual bridge segments to the greatest extent, ensuring the applicability of actual applications. At the same time, by the detachable connection between the falsework piers 31 and the steel girders 11, it is convenient for the composite beam falsework 3 to be disassembled and assembled while providing support for the composite beam 1, thereby facilitating multiple fabrication processes and improving the overall construction efficiency.

[0058] Optionally, asFigures 2 to 4 As shown, the segment information of the bridge includes the width, length, and slope of a single-span bridge segment.

[0059] In this embodiment, a single-span bridge segment refers to the segment between two groups of bridge piers along the length direction of the bridge, and the bridge segment on one side in the width direction. During the bridge erection process, the composite beam 1 manufactured by the above composite beam prefabrication method can be assembled at the bridge segment erection position to form a bridge segment. For example, when the span of the bridge segment is large, the span refers to the width of the bridge and the length of the segment, and the slope also includes the transverse slope and the longitudinal slope. Among them, the width and the transverse direction are in the X-axis direction in the attached drawing, and the length and the longitudinal direction are in the Y-axis direction in the attached drawing. It is difficult to ensure the processing quality of a bridge segment with a large span and a certain slope by the existing composite beam manufacturing method. By prefabricating the composite beam formwork 3, the steel beam 11, and the intermediate cross connection 2 according to the above bridge segment information, it can be ensured to be consistent with the length, width, and slope of the actual bridge segment to the greatest extent, thereby improving the processing quality of the composite beam 1.

[0060] Exemplarily, as Figure 4 shown, the composite beam formwork 3 includes multiple columns of four rows of formwork piers 31. The column refers to the X-axis direction in the drawing, and the row refers to the Y-axis direction in the drawing. Every two rows of formwork piers 31 support one composite beam 1, and the spacing between each row of formwork piers 31 is the same, and the height of the formwork piers 31 is adjustable. The height of multiple formwork piers 31 can be adjusted simultaneously to match the slope processing of the composite beam 1 and ensure the quality.

[0061] Optionally, as Figure 2 and Figure 4 shown, the prefabrication of the steel beam 11, the intermediate cross connection 2, and the composite beam formwork 3 according to the segment information of the bridge further includes:

[0062] In the composite beam formwork area, and at both ends in the length direction of the composite beam formwork 3, tracks 4 are respectively laid along the width direction of the composite beam formwork. The tracks 4 are used to transport the composite beam 1.

[0063] In this embodiment, by prefabricating the composite beam formwork 3, at the same time, in its length direction, that is, at both ends in the Y-axis direction in the attached Figure 4 drawing, the tracks 4 are laid, which facilitates the transfer and transportation of the prefabricated steel beam 11 and the composite beam 1, thereby facilitating the processing and manufacturing of the composite beam 1, and preventing the possible impact on the quality of the composite beam 1 during the transfer and transportation process.

[0064] Optionally, as Figure 2 and Figure 4 shown, the removal of the intermediate cross connection 2 and the detachment of the steel beam 11 from the composite beam formwork 3 to obtain two matching composite beams 1 include:

[0065] Release the connection between the middle cross beam 2 and the two combined beams 1;

[0066] Release the connection between the combined beam 1 and the combined beam support frame 3;

[0067] Transport the combined beam 1 to the beam storage area by a traversing vehicle 5 pre - installed on the track 4.

[0068] In this embodiment, after the concrete bridge deck 12 is poured, first release the connection between the middle cross beam 2 and the combined beams 1 on both sides of it, then release the connection between the combined beam 1 and the combined beam support frame 3, that is, the combined beam 1 is removed from the combined beam support frame 3, and then transport the combined beam 1 to the beam storage area by the traversing vehicle 5 pre - installed on the track 4. Specifically, the combined beam 1 on one side of the middle cross beam 2 can be transported to the beam storage area by the traversing vehicle 5 first, then the middle cross beam 2 is hoisted to the storage position, and then the combined beam 1 on the other side is transported by the traversing vehicle 5. Thus, while obtaining two matching combined beams 1, the process of removing and transporting them will not affect their quality, and it is convenient for operation.

[0069] Optionally, as Figure 2 shown, connecting the pre - fabricated steel beam 11 to the combined beam support frame 3 includes:

[0070] Hoist the two steel beams 11 to the combined beam support frame 3 in sequence by a truss crane 6 and connect them to the combined beam support frame 3, and reserve a space for installing the middle cross beam 2 between the two steel beams 11.

[0071] In this embodiment, hoisting the steel beam 11 by the truss crane 6 saves time and effort, ensures the operation safety, and reserves a space for installing the middle cross beam 2 between the two steel beams 11, which facilitates the next - step installation of the middle cross beam 2, enables the processing and manufacturing of the combined beam 1 to proceed in an orderly manner, and improves the overall construction efficiency.

[0072] Optionally, as Figure 2 shown, connecting the pre - fabricated middle cross beam 2 between the two steel beams 11 includes:

[0073] Hoist the middle cross beam 2 by the truss crane 6 between the two steel beams 11 and connect it to the two steel beams 11 on both sides of the width direction of the middle cross beam 2 by bolts respectively.

[0074] In this embodiment, hoisting the middle cross beam 2 by the truss crane 6 saves time and effort and ensures the operation safety. At the same time, connecting it to the steel beams 11 on both sides by bolts is convenient for operation and also convenient for later disassembly, improving the overall operation efficiency. Specifically, when removing the middle cross beam 2, it can also be hoisted by the truss crane 6.

[0075] Optionally, as Figure 2 and Figure 3 shown, the structure of the intermediate cross member 2 is the same as that of the steel beam 11.

[0076] In this embodiment, by setting the structures of the intermediate cross member 2 and the steel beam 11 to be the same, it is convenient to prefabricate the intermediate cross member 2 and the steel beam 11 in the factory, thereby shortening the construction period, ensuring the consistency of the component quality, facilitating the improvement of the overall quality, and facilitating the connection and disassembly of the intermediate cross member 2 and the steel beam 11 when manufacturing the composite beam 1 at the bridge erection site, and facilitating the layout of the composite beam formwork 3 in the construction site, thereby improving the overall construction efficiency and quality.

[0077] Optionally, as Figure 2 shown, pouring the concrete bridge deck 12 on the steel beam 11 includes:

[0078] Installing the steel mesh of the concrete bridge deck 12 on the steel beam 11;

[0079] Setting up the formwork for the concrete bridge deck 12 to ensure the shape of the concrete bridge deck 12;

[0080] Pouring concrete to obtain the concrete bridge deck 12 with a set thickness.

[0081] In this embodiment, when pouring the concrete bridge deck 12 on the steel beam 11, first install the steel mesh of the concrete bridge deck 12 on the steel beam 11 to reinforce the concrete bridge deck 12, ensure its firmness and facilitate its forming. Then set up the formwork for the concrete bridge deck 12 on the side of the steel beam 11 and between two steel beams 11, which can ensure the formation of the preset shape of the concrete bridge deck 12, and then pour the concrete until the concrete bridge deck 12 with a set thickness is obtained. By pouring the concrete bridge deck 12 through the above method, not only can the structural firmness of the concrete bridge deck 12 be improved and its bearing capacity be increased, but also its shape, slope and other index requirements can be ensured to be consistent with those of the bridge deck used in the actual bridge segment, thereby improving the overall quality of the composite beam 1.

[0082] Specifically, after pouring the concrete, the concrete bridge deck 12 can be cured in the factory building 7 for a certain period of time. Preferably, the curing period is more than five days.

[0083] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A prefabrication method for a composite beam, which is applied to a composite beam (1), and the composite beam (1) is used for bridge erection. It is characterized in that, The prefabrication method of the composite beam includes: Prefabricating the steel beam (11), the intermediate cross connection (2) and the composite beam jig (3) according to the segment information of the bridge; Connecting the prefabricated steel beam (11) to the composite beam jig (3); Connecting the prefabricated intermediate cross connection (2) between two steel beams (11); Pouring a concrete deck slab (12) on the steel beam (11); Removing the intermediate cross connection (2) and demolding the steel beam (11) from the composite beam jig (3) to obtain two matching composite beams (1); Before prefabricating the steel beam (11), the intermediate cross connection (2) and the composite beam jig (3) according to the segment information of the bridge, the prefabrication method of the composite beam further includes: Constructing a construction site, which is used to be built on the subgrade at the bridgehead or the bridge tail of the bridge. The construction site includes a composite beam jig area and a beam storage area, and the base surface of the composite beam jig area is hardened; The prefabricating the steel beam (11), the intermediate cross connection (2) and the composite beam jig (3) according to the segment information of the bridge includes: Setting a plurality of jig supports (31) on the base surface of the composite beam jig area. The plurality of jig supports (31) are arranged and combined to form the composite beam jig (3), which is matched with the segment information of the bridge, and the jig supports (31) are used for detachably connecting with the steel beam (11); The segment information of the bridge includes the width, length and slope of a single-span bridge segment.

2. The prefabrication method of the composite beam according to claim 1, wherein, The prefabricating the steel beam (11), the intermediate cross connection (2) and the composite beam jig (3) according to the segment information of the bridge further includes: Laying tracks (4) along the width direction of the composite beam jig (3) at both ends of the length direction of the composite beam jig (3) in the composite beam jig area. The tracks (4) are used for transporting the composite beam (1).

3. The prefabrication method of the composite beam according to claim 2, characterized in that, The removing the intermediate cross connection (2) and demolding the steel beam (11) from the composite beam jig (3) to obtain two matching composite beams (1) includes: Releasing the connection relationship between the intermediate cross connection (2) and the two composite beams (1); Releasing the connection relationship between the composite beam (1) and the composite beam jig (3); Transporting the composite beam (1) to the beam storage area by a transverse moving vehicle (5) preset on the track (4).

4. The prefabrication method of the composite beam according to any one of claims 1 to 3, characterized in that, The connecting the prefabricated steel beam (11) to the composite beam jig (3) includes: Lifting two steel beams (11) to the composite beam jig (3) in sequence by a gantry crane (6) and connecting them to the composite beam jig (3), and leaving a space for installing the intermediate cross connection (2) between the two steel beams (11).

5. The prefabrication method of the composite beam according to any one of claims 1 to 3, characterized in that, The connecting the prefabricated intermediate cross connection (2) between two steel beams (11) includes: Lifting the intermediate cross connection (2) to between two steel beams (11) by a gantry crane (6) and connecting it to the two steel beams (11) on both sides of the width direction of the intermediate cross connection (2) respectively by bolts.

6. The prefabrication method of the composite beam according to claim 5, characterized in that, The structure of the intermediate cross connection (2) is the same as that of the steel beam (11).

7. The prefabrication method of the composite beam according to any one of claims 1 to 3, characterized in that Pouring the concrete bridge deck (12) on the steel beam (11) includes: Installing the steel mesh of the concrete bridge deck (12) on the steel beam (11); Setting up the formwork for the concrete bridge deck (12) to ensure the shape of the concrete bridge deck (12); Pouring concrete to obtain the concrete bridge deck (12) with a set thickness.

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