Modular steel box girder heavy lane area steel deck panel device

Abstract

The utility model discloses a heavy lane area steel bridge deck device based on modularization's steel box girder, including heavy lane steel bridge deck, with heavy lane steel bridge deck adjacent heavy lane adjacent steel bridge deck, be located between heavy lane steel bridge deck and heavy lane adjacent steel bridge deck's T shape stiffening connecting plate, be used for the multiple L shape splicing board of T shape stiffening connecting plate and heavy lane steel bridge deck, heavy lane adjacent steel bridge deck fixed, T shape stiffening connecting plate with heavy lane steel bridge deck and heavy lane adjacent steel bridge deck between, T shape stiffening connecting plate and splicing board between all through high -strength bolt connection, through adopting modularization detachable structure + high -strength bolt connection design, make the bridge deck of the fatigue cracking area that has taken place can be replaced independently, avoid the damage to whole bridge structure.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and more specifically, to a modular steel box girder heavy-duty lane steel bridge deck device. Background Technology

[0002] Orthotropic steel bridge decks are composed of a top plate, longitudinal stiffeners, and transverse diaphragms. Due to their lightweight, high load-bearing capacity, high redundancy, low environmental pollution, and renewable resources, they are widely used in large and medium-span bridges. With the rapid development of my country's economy, a number of large-span and super-large-span bridges using orthotropic steel bridge decks have been built in my country in the past 20 years.

[0003] Orthotropic steel bridge decks have numerous connecting welds, inevitably introducing residual welding stress fields and welding defects into the structure. During vehicle reciprocating motion, the orthotropic steel bridge deck bears significant fatigue loads. Under the coupling effect of residual tensile stress from welding, the stress state of fatigue details under wheel loads, which is initially under full compression or predominantly compression, will transform into full tension or predominantly tension. In actual engineering projects, a certain number of fatigue cracks have been found at locations such as the top plate-longitudinal rib connection welds, longitudinal rib-transverse diaphragm connection welds, and longitudinal rib splice welds of orthotropic steel bridge decks, with a larger proportion of cracks located under the heavy-duty lanes. As the service life increases, fatigue cracks will further propagate, seriously threatening the operational safety of the bridge.

[0004] Currently, fatigue crack repair in engineering projects often employs methods such as crack arresting holes, remelting, and localized reinforcement of plates. However, defects in the original structural system's materials and construction cannot be avoided, and there remains a significant potential risk of fatigue damage. Moreover, traditional orthotropic steel bridge decks are mostly welded, and existing technologies cannot solve the problems of difficult removal and replacement of traditional orthotropic steel bridge decks. Removal requires cutting a large number of welds on-site, resulting in complex construction organization, long construction periods, and further increasing maintenance costs and social impact.

[0005] Therefore, there is an urgent need for a steel bridge deck device that can be replaced as a whole to solve the above-mentioned defects in the existing technology. Summary of the Invention

[0006] In view of the above-mentioned defects or improvement needs of the existing technology, this utility model provides a modular steel box girder heavy lane area steel bridge deck device. By adopting a modular detachable structure and high-strength bolt connection design, the bridge deck in the fatigue cracked area can be replaced independently, avoiding damage to the entire bridge structure. The replacement process is more convenient, and the replacement of a single bridge deck can be completed in a short time, reducing construction difficulty and improving bridge maintenance efficiency.

[0007] To achieve the above objectives, this utility model provides a modular steel box girder heavy-duty lane steel bridge deck device, including a heavy-duty lane steel bridge deck, a heavy-duty lane adjacent steel bridge deck adjacent to the heavy-duty lane steel bridge deck, a T-shaped stiffening connecting plate disposed between the heavy-duty lane steel bridge deck and the heavy-duty lane adjacent steel bridge deck, and multiple L-shaped splicing plates for fixing the T-shaped stiffening connecting plate and the heavy-duty lane steel bridge deck and the heavy-duty lane adjacent steel bridge deck.

[0008] The T-shaped stiffening connecting plate is connected to the heavy-duty lane steel bridge deck and the adjacent heavy-duty lane steel bridge deck, and the T-shaped stiffening connecting plate is connected to the splicing plate by high-strength bolts.

[0009] Furthermore, the heavy-duty lane steel bridge deck includes a first top plate, a first longitudinal plate rib disposed at the bottom of the first top plate and arranged along the longitudinal direction of the bridge, a first longitudinal closed rib, and a plurality of first transverse diaphragms arranged along the transverse direction of the bridge on the first longitudinal plate rib and the first longitudinal closed rib.

[0010] Furthermore, the first transverse diaphragm is perpendicular to the first top plate; multiple first transverse diaphragms are provided parallel to each other along the longitudinal bridge direction of the first top plate; a first transverse diaphragm connecting plate is provided on the side of the first transverse diaphragm away from the first top plate.

[0011] Furthermore, the first top plate has several first bolt holes arranged along the longitudinal direction at both ends of the transverse bridge direction; the first transverse diaphragm has several second bolt holes connected to the splicing plate at both ends of the transverse bridge direction; and the first transverse diaphragm connecting plate has several third bolt connection holes connected to the lower transverse diaphragm connecting plate of the steel box girder.

[0012] Furthermore, the steel bridge deck adjacent to the heavy-duty lane includes a second top plate, a second longitudinal plate rib disposed at the bottom of the second top plate and arranged along the longitudinal direction of the bridge, a second longitudinal closed rib, and a plurality of second transverse diaphragms arranged along the transverse direction of the bridge on the second longitudinal plate rib and the second longitudinal closed rib.

[0013] Furthermore, the area adjacent to the first top plate in the second top plate is provided with several fourth bolt holes along the longitudinal bridge direction, which are connected to the T-shaped stiffening connecting plates.

[0014] The area of ​​the second diaphragm adjacent to the first diaphragm is provided with several fifth bolt holes that are connected to the splicing plate.

[0015] Furthermore, the second diaphragm and the first diaphragm are identical in position, width, and number.

[0016] Furthermore, the T-shaped stiffening connecting plate includes a base plate and a vertical plate disposed on the base plate;

[0017] The width of the vertical plate is less than the width of the first horizontal partition.

[0018] Furthermore, the base plate is provided with a plurality of sixth bolt holes corresponding to the fourth bolt holes on the steel bridge deck adjacent to the heavy lane and the first bolt holes on the steel bridge deck of the heavy lane, respectively;

[0019] The vertical plate is provided with several seventh bolt holes for connection with the splicing plate.

[0020] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0021] (1) This utility model discloses a modular steel bridge deck device for the heavy-duty lane area of ​​a steel box girder. Through modular design and high-strength bolt connection, it enables convenient replacement of the steel bridge deck for the heavy-duty lane. Compared with the traditional welding method in the prior art, this utility model avoids the complex operation of large-area dismantling and on-site cutting of a large number of welds. The modular design of the heavy-duty lane steel bridge deck allows for independent replacement without damaging the entire bridge structure, reducing construction difficulty and construction period. This design significantly reduces maintenance costs, minimizes the impact on social traffic, and improves bridge maintenance efficiency.

[0022] (2) This utility model discloses a modular steel box girder heavy-duty lane steel bridge deck device, which effectively improves fatigue resistance by optimizing the structure and materials of the heavy-duty lane steel bridge deck. Compared with the prior art, this utility model adopts high-strength bolt connections and modular structures in its design, reducing the influence of welding residual stress fields and welding defects. By introducing T-shaped stiffening connecting plates and L-shaped splicing plates into the heavy-duty lane steel bridge deck, the integrity and stability of the structure are enhanced, effectively reducing the generation and propagation of fatigue cracks, thereby extending the service life of the bridge.

[0023] (3) This utility model discloses a modular steel box girder heavy-duty lane steel bridge deck device. Through modular design and factory prefabrication, it significantly improves construction efficiency and reduces maintenance costs. Compared with the prior art, the heavy-duty lane steel bridge deck, T-shaped stiffening connecting plate, and L-shaped splicing plate in this utility model are all prefabricated in the factory, ensuring the accuracy and quality of the components. The steel box girder diaphragms are broken in the middle and connected into a whole by high-strength bolts, reducing the workload and time of on-site construction. In addition, the modular design makes the replacement process more efficient, further reducing maintenance costs and social impact. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of the main body of the steel box girder;

[0025] Figure 2 This is a three-dimensional structural schematic diagram of a modular steel box girder heavy-duty lane steel bridge deck device according to an embodiment of the present invention.

[0026] Figure 3 This is a front view structural schematic diagram of a modular steel box girder heavy-duty lane steel bridge deck device according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of a heavy-duty lane steel bridge deck based on a modular steel box girder heavy-duty lane steel bridge deck device according to an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the structure of a T-shaped stiffening connection plate of a modular steel box girder heavy-duty lane steel bridge deck device according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the splicing plate of a modular steel box girder heavy-duty lane steel bridge deck device according to an embodiment of the present invention.

[0030] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-heavy lane steel bridge deck, 11-first top plate, 111-first bolt hole, 12-first longitudinal rib, 13-first longitudinal closing rib, 14-first transverse diaphragm, 141-second bolt hole, 15-first transverse diaphragm connecting plate, 151-third bolt hole, 2-heavy lane adjacent steel bridge deck, 3-T-shaped stiffening connecting plate, 31-bottom plate, 311-sixth bolt hole, 32-vertical plate, 321-seventh bolt hole, 4-splicing plate, 5-steel box girder lower transverse diaphragm connecting plate. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, when an element is referred to as "fixed to," "set on," or "provided on" another element, it can be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to or indirectly connected to the other element. The terms "mounted," "connected," "linked," and "provided with" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements or the interaction between two elements. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0033] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] like Figures 1-6 As shown, this utility model provides a modular steel bridge deck device for the heavy-duty lane area of ​​a steel box girder, including a heavy-duty lane steel bridge deck 1, an adjacent heavy-duty lane steel bridge deck 2 adjacent to the heavy-duty lane steel bridge deck 1, and a T-shaped stiffening connecting plate 3 disposed between the heavy-duty lane steel bridge deck 1 and the adjacent heavy-duty lane steel bridge deck 2. Multiple splicing plates 4 are used to fix the T-shaped stiffening connecting plate 3 to the heavy-duty lane steel bridge deck 1 and the adjacent heavy-duty lane steel bridge deck 2. The T-shaped stiffening connecting plate 3 is connected to the heavy-duty lane steel bridge deck 1 and the adjacent heavy-duty lane steel bridge deck 2, and the T-shaped stiffening connecting plate 3 is connected to the L-shaped splicing plates 4 by high-strength bolts. This utility model, by adopting a modular and detachable structure + high-strength bolt connection design, allows the bridge deck in fatigue-cracking areas to be replaced independently, avoiding damage to the entire bridge structure. The replacement process is more convenient, and the replacement of a single bridge deck can be completed in a short time, reducing construction difficulty and improving bridge maintenance efficiency.

[0035] Furthermore, such as Figures 1-6As shown, the heavy-duty lane steel bridge deck 1 includes a first top plate 11, a first longitudinal plate rib 12 and a first longitudinal closing rib 13 arranged along the longitudinal direction of the bridge at the bottom of the first top plate 11, and a plurality of first transverse diaphragms 14 arranged along the transverse direction of the bridge on the first longitudinal plate rib 12 and the first longitudinal closing rib 13; the first longitudinal closing rib 13 is disposed between two adjacent first longitudinal plate ribs 12; the first transverse diaphragm 14 is provided with a retaining groove to accommodate the first longitudinal plate rib 12 and the first longitudinal closing rib 13; the first transverse diaphragm 14 is perpendicular to the first top plate. 11; The first transverse diaphragm 14 is provided with multiple parallel spacings along the longitudinal bridge direction of the first top plate 11; The first transverse diaphragm 14 is provided with a first transverse diaphragm connecting plate 15 on the side away from the first top plate 11; The first top plate 11 is provided with a number of first bolt holes 111 arranged along the longitudinal bridge direction at both ends along the transverse bridge direction; The first transverse diaphragm 14 is provided with a number of second bolt holes 141 connected to the splicing plate 4 at both ends along the transverse bridge direction; The first transverse diaphragm connecting plate 15 is provided with a number of third bolt connecting holes 151 connected to the lower transverse diaphragm connecting plate 5 of the steel box girder.

[0036] Furthermore, such as Figures 1-6 As shown, the heavy-duty lane adjacent steel bridge deck 2 and the heavy-duty lane steel bridge deck 1 have the same length along the longitudinal direction of the bridge; the heavy-duty lane adjacent steel bridge deck 2 includes a second top plate, a second longitudinal plate rib arranged along the longitudinal direction of the bridge at the bottom of the second top plate, a second longitudinal closed rib, and a plurality of second transverse diaphragms arranged along the transverse direction of the bridge on the second longitudinal plate rib and the second longitudinal closed rib; the second transverse diaphragms and the first transverse diaphragms 14 are in the same position, width and number; the area adjacent to the second top plate and the first top plate 11 is provided with a plurality of fourth bolt holes connected to the T-shaped stiffening connecting plate 3 along the longitudinal direction of the bridge; the area adjacent to the second transverse diaphragm and the first transverse diaphragm 14 is provided with a plurality of fifth bolt holes connected to the splicing plate 4.

[0037] Furthermore, such as Figures 1-6 As shown, the T-shaped stiffening connecting plate 3 includes a base plate 31 and a vertical plate 32 perpendicularly disposed on the base plate 31; the base plate 31, the vertical plate 32, and the heavy-duty lane steel bridge deck 1 have the same longitudinal bridge length; the base plate 31 is provided with a plurality of sixth bolt holes 311 corresponding to the fourth bolt holes on the heavy-duty lane adjacent steel bridge deck 2 and the first bolt holes 111 on the heavy-duty lane steel bridge deck 1 respectively; the vertical plate 32 is provided with a plurality of seventh bolt holes 321 connected to the splicing plate 4; the splicing plate 4 is L-shaped; the splicing plate 4 is provided with a plurality of eighth bolt holes for connecting with the T-shaped stiffening connecting plate 3, the first transverse diaphragm 14, and the second transverse diaphragm; the base plate 31 of the T-shaped stiffening connecting plate 3 and the top plate of the heavy-duty lane steel bridge deck 1 and the heavy-duty lane adjacent steel bridge deck 2 are fixed together by the L-shaped splicing plate 4; the vertical plate 32 of the T-shaped stiffening connecting plate 3 and the first transverse diaphragm 14 and the second transverse diaphragm are fixed together by the L-shaped splicing plate 4.

[0038] Furthermore, such as Figures 1-6 As shown, the lengths of the first transverse diaphragm 14 and the first transverse diaphragm connecting plate 15 are the same as the width of the first top plate 11 along the transverse bridge direction; the width of the vertical plate 32 is less than the width of the first transverse diaphragm 14; the widths of the first transverse diaphragm 14 and the first transverse diaphragm connecting plate 15 are the same as the width of the first top plate 11 along the transverse bridge direction.

[0039] Furthermore, the heavy-duty lane steel bridge deck 1, T-shaped stiffening connecting plates 3 and L-shaped splicing plates 4, and the main structure of the steel box girder are all prefabricated in the factory. The transverse diaphragms of the steel box girder are broken in the middle and are bolted together as a whole by the lower transverse diaphragm connecting plate 5 of the steel box girder and the first transverse diaphragm connecting plate 15 on the heavy-duty lane steel bridge deck 1. When the top plate of the heavy-duty lane steel bridge deck 1 is broken in the transverse direction between the top plates of the adjacent steel bridge decks on the left and right, it is connected into a whole by bolting through the T-shaped stiffening connecting plates 3, making it easy to disassemble and install the T-shaped stiffening connecting plates 3 and the lower steel bridge deck 1 of the heavy-duty lane as a whole. Since the top plate of the heavy-duty lane steel bridge deck 1 is broken in the transverse direction between the top plates of the adjacent steel bridge decks on the left and right, the connection between the segments of the heavy-duty lane steel bridge deck is a transverse weld connection.

[0040] The construction steps of the modular steel box girder heavy-duty lane steel bridge deck device provided by this utility model include:

[0041] S1: Prefabricated steel box main structure, heavy-duty lane steel bridge deck 1, T-shaped stiffening connecting plate 3 and L-shaped splicing plate 4;

[0042] S2: The main structure of the steel box girder, the heavy-duty lane steel bridge deck 1, and the T-shaped stiffening connecting plate 3 are precisely positioned in sequence. The L-shaped splicing plate 4 and high-strength bolts are used to connect the above three into a whole to form a complete steel box girder structure.

[0043] S3: After the steel box girder is installed in place by jacking, hoisting or other construction methods, inter-segment welding is carried out.

[0044] S4: When minor cracks appear in the steel bridge deck under the heavy-duty lane, long-term monitoring and periodic inspections should be conducted on the cracked area; when bolts are damaged or the steel bridge deck under the heavy-duty lane is severely cracked, the entire structure must be replaced. The replacement steps include...

[0045] S41: Remove bridge deck paving;

[0046] S42: Dismantle all connecting bolts between the T-shaped stiffening connecting plate 3 and the top plate and upper transverse diaphragm connecting the steel bridge deck 2 and the steel bridge deck 1 of the heavy lane adjacent to the heavy lane, and dismantle the T-shaped stiffening connecting plate by hoisting or other construction methods;

[0047] S43: Cut the butt weld of the top plate segment of the heavy lane steel bridge deck 1 in the area to be dismantled, and remove the bolt connection between the upper transverse diaphragm of the heavy lane steel bridge deck 1 and the lower transverse diaphragm connecting plate 5 of the steel box girder before dismantling the heavy lane steel bridge deck 1.

[0048] S44: Repeat steps S2 to S3 to complete the overall replacement of the steel bridge deck in the severely cracked area under the heavy lane.

[0049] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular steel box girder heavy-duty lane steel bridge deck device, characterized in that: It includes a heavy-duty lane steel bridge deck (1), a heavy-duty lane adjacent steel bridge deck (2) adjacent to the heavy-duty lane steel bridge deck (1), a T-shaped stiffening connecting plate (3) disposed between the heavy-duty lane steel bridge deck (1) and the heavy-duty lane adjacent steel bridge deck (2), and a plurality of L-shaped splicing plates (4) for fixing the T-shaped stiffening connecting plate (3) to the heavy-duty lane steel bridge deck (1) and the heavy-duty lane adjacent steel bridge deck (2); The T-shaped stiffening connecting plate (3) is connected to the heavy-duty lane steel bridge deck (1) and the adjacent heavy-duty lane steel bridge deck (2) by high-strength bolts, and the T-shaped stiffening connecting plate (3) is connected to the splicing plate (4).

2. The modular steel box girder heavy-duty lane steel bridge deck device according to claim 1, characterized in that: The heavy-duty lane steel bridge deck (1) includes a first top plate (11), a first longitudinal plate rib (12) arranged along the longitudinal direction of the bridge at the bottom of the first top plate (11), a first longitudinal closing rib (13), and a plurality of first transverse diaphragms (14) arranged along the transverse direction of the bridge on the first longitudinal plate rib (12) and the first longitudinal closing rib (13).

3. A modular steel box girder heavy-duty lane steel bridge deck device according to claim 2, characterized in that: The first transverse diaphragm (14) is perpendicular to the first top plate (11); the first transverse diaphragm (14) is provided in multiple parallel intervals along the longitudinal bridge direction of the first top plate (11); the first transverse diaphragm (14) is provided with a first transverse diaphragm connecting plate (15) on the side away from the first top plate (11).

4. A modular steel box girder heavy-duty lane steel bridge deck device according to claim 3, characterized in that: The first top plate (11) has several first bolt holes (111) arranged along the longitudinal direction at both ends of the transverse bridge direction; the first transverse diaphragm (14) has several second bolt holes (141) connected to the splicing plate (4) at both ends of the transverse bridge direction; the first transverse diaphragm connecting plate (15) has several third bolt connecting holes (151) connected to the lower transverse diaphragm connecting plate (5) of the steel box girder.

5. A modular steel box girder heavy-duty lane steel bridge deck device according to any one of claims 2-4, characterized in that: The adjacent steel bridge deck (2) of the heavy lane includes a second top plate, a second longitudinal plate rib arranged along the longitudinal direction of the bridge at the bottom of the second top plate, a second longitudinal closed rib, and a plurality of second transverse diaphragms arranged along the transverse direction of the bridge on the second longitudinal plate rib and the second longitudinal closed rib.

6. A modular steel box girder heavy-duty lane steel bridge deck device according to claim 5, characterized in that: The area adjacent to the second top plate and the first top plate (11) is provided with several fourth bolt holes along the longitudinal bridge direction, which are connected to the T-shaped stiffening connecting plate (3); The area of ​​the second diaphragm adjacent to the first diaphragm (14) is provided with several fifth bolt holes that are connected to the splicing plate (4).

7. A modular steel box girder heavy-duty lane steel bridge deck device according to claim 6, characterized in that: The second diaphragm and the first diaphragm (14) are in the same position, width and number.

8. A modular steel box girder heavy-duty lane steel bridge deck device according to any one of claims 2-4, 6, and 7, characterized in that: The T-shaped stiffening connecting plate (3) includes a base plate (31) and a vertical plate (32) vertically disposed on the base plate (31); The width of the vertical plate (32) is less than the width of the first horizontal partition (14).

9. A modular steel box girder heavy-duty lane steel bridge deck device according to claim 8, characterized in that: The base plate (31) is provided with a plurality of sixth bolt holes (311) corresponding to the fourth bolt holes on the steel bridge deck (2) adjacent to the heavy lane and the first bolt holes (111) on the steel bridge deck (1) of the heavy lane, respectively; The vertical plate (32) is provided with several seventh bolt holes (321) that connect to the splicing plate (4).

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