Construction platform and construction method for steel box continuous bridge
By introducing guide mechanisms and drive mechanisms on the construction platform, the problem that the construction platform cannot adaptively turn on the curved bridge deck is solved, and automatic correction of walking is achieved. It is especially suitable for cross-sea curved bridge construction, with the advantages of safety, reliability and low cost.
Patent Information
- Application Number
- CN202510665232.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2025-07-29
AI Technical Summary
The construction platform cannot adaptively turn on the cross-sea curved bridge deck with a small curvature radius, resulting in the inability to walk from a long distance. It must be corrected with the help of lifting equipment, which increases the difficulty of operation and workload.
The guide mechanism is adopted, including tracks and limiting parts. The tracks are distributed linearly according to the direction of the curved bridge. The limiting parts are closely attached to the curb. The main body of the platform automatically corrects the walking direction through the first and second driving mechanisms to avoid assistance from lifting equipment.
The construction platform automatically corrects the walking direction on the curved bridge deck, reduces operation difficulty, improves safety and reduces costs, and is suitable for cross-sea curved bridge construction.
Smart Images
Figure CN120384469A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of steel structure bridge manufacturing, and particularly to a construction platform and a construction method for a continuous steel box bridge. Background Art
[0002] The upper structure of the cross-sea bridge is a split-type continuous steel box girder. Specifically, after being assembled into single-span large segments of about 100 m in the factory, they are transported to the bridge site for erection, and then the circumferential joints between the large segments are welded to form a continuous girder. During the construction of the circumferential joints of the steel box girder at the bridge site, in order to ensure the construction quality and safety of the butt welds of the bottom plate and the web, a reliable construction platform is often required.
[0003] In order to simplify the construction difficulty, a construction platform with a driving system is often used, generally a truss structure supported on the bridge deck by wheels and provided with a driving mechanism to achieve autonomous walking. This kind of construction platform has great advantages when applied to straight bridges or curved bridges with a very large radius of curvature (similar to straight bridges).
[0004] However, the radius of curvature of the cross-sea bridge is generally between 7 km and 8 km. Facing a curved bridge with a small radius of curvature and a large distance between circumferential joints, since the construction platform walks along a straight track, the four wheels of the construction platform cannot adaptively turn. As a result, when the construction platform walks on the curved bridge deck, every time it walks a short distance, the truss of the construction platform will collide with the edge of the steel box girder, resulting in the inability to continue walking forward. This requires a lifting device to correct the walking direction of the construction platform, greatly increasing the operation difficulty and workload, and being unfavorable for on-site construction. Summary of the Invention
[0005] To solve the above problems, the present application provides a construction platform and a construction method for a continuous steel box bridge.
[0006] The present application provides a construction platform for a continuous steel box bridge, including a guiding mechanism and a platform main body. The guiding mechanism includes a track and at least two limiting members both connected to the linear side of the track's orientation. The track is used for being placed on the bridge deck of the curved bridge, and the limiting members are used for closely adhering to the kerbstone of the curved bridge. The platform main body includes a first driving mechanism walking on the track and a second driving mechanism directly walking on the bridge deck of the curved bridge. The track is used for automatically correcting the moving direction of the platform main body according to the alignment of the curved bridge.
[0007] In some embodiments, the construction platform is provided with at least two guiding mechanisms, and the at least two guiding mechanisms are used for being alternately placed along the alignment direction of the curved bridge.
[0008] In some embodiments, the track includes:
[0009] A track body, and the limiting member is fixedly connected to the track body;
[0010] The guiding joint is connected to one end of the length of the track body. The guiding joint is used to overlap with the track body of another track to realize the sequential placement of two tracks.
[0011] In some embodiments, a single track body is a straight structure, and at least two guiding mechanisms are alternately arranged along the linear direction of the bending direction of the curved bridge.
[0012] In some embodiments, the track body is an angle steel structure, and the guiding joint is also an angle steel structure. The width of the angle steel side of the guiding joint is smaller than that of the angle steel side of the track body. The guiding joint is connected to the inner side of one end of the length of the angle steel of the track body and protrudes compared with the track body.
[0013] In some embodiments, the length of the track body is 2m - 3m.
[0014] In some embodiments, the track body and the guiding joint are welded.
[0015] In some embodiments, the wheel surface of the roller belonging to the first driving mechanism is provided with an inverted V-shaped notch for cooperating with the track body.
[0016] In some embodiments, the platform main body is provided with a telescopic vehicle frame whose position can be adjusted relatively.
[0017] A construction method for a continuous steel box bridge, applying the above-mentioned construction platform, making the first driving mechanism of the platform main body travel on the guiding mechanism, pressing the limiting member of the guiding mechanism against the inner side of the curb of the curved bridge, arranging the two guiding mechanisms back and forth along the linear direction of the bending direction of the curved bridge, making the first driving mechanism travel along the track of one guiding mechanism to the track of another guiding mechanism. During the driving process of the construction platform, the two guiding mechanisms move forward alternately and always maintain the limiting member pressed against the inner side of the curb.
[0018] The beneficial effects of this application are as follows: A construction platform for a continuous steel box bridge is provided. Based on the function of the traditional construction platform that can move along the bridge extension direction and provide working positions for workers, the first driving mechanism of the construction platform is improved. On the basis of maintaining the original setting of the second driving mechanism that directly walks on the bridge deck of the curved bridge, the guiding mechanism plays a guiding role for the first driving mechanism. The guiding mechanism includes a track and at least two limiting members. All the limiting members are connected to one side of the track along the alignment of the curved bridge. The track is placed on the bridge deck of the curved bridge and the limiting members are in contact with the curbstone of the curved bridge, so that the track can be distributed according to the alignment of the curved bridge. Through the track, the moving direction of the platform body is automatically corrected according to the alignment of the curved bridge. The platform body includes a main structure that provides a welding construction station for the continuous steel box bridge. The platform body includes a driving mechanism that moves relative to the curved bridge. The driving mechanism includes a first driving mechanism and a second driving mechanism. The second driving mechanism directly walks on the bridge deck of the curved bridge, and the first driving mechanism walks along the track. The second driving mechanism is farther from the closest curbstone than the first driving mechanism. For the basic condition that the alignment of the curved bridge is a circular curve, the solution of this application adopts the above-mentioned guiding mechanism and the first driving mechanism, so that the walking direction of the platform body is consistent with the alignment of the curved bridge. Compared with the previous solution for bridge construction platforms that can only move in a straight line, the solution of this application can realize the automatic correction of the walking direction of the construction platform, and can realize the automatic correction of the walking direction based on the curved bridge without the assistance of lifting equipment, solving the problem of the long-distance autonomous walking of the construction platform on the curved bridge deck without the help of lifting equipment. It is especially suitable for cross-sea curved bridges and can be applied to curved bridges with different cross-sea curvatures. Compared with the long-distance autonomous walking with the help of lifting equipment, the solution of this application has the advantages of convenience, speed, safety, reliability and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention.
[0020] Figure 1 It is a layout cross-sectional view of a construction platform for a continuous steel box bridge provided by this application;
[0021] Figure 2 is Figure 1 a partial enlarged schematic diagram of the guiding mechanism in
[0022] Figure 3 It is a side view schematic diagram of the first driving mechanism provided by this application;
[0023] Figure 4Schematic diagram of the roller track guidance of the first driving mechanism provided by this application;
[0024] Figure 5 Front view of the track provided by this application;
[0025] Figure 6 Side view of the track provided by this application;
[0026] Figure 7 Schematic diagram of the cross-section of the track provided by this application in the width direction;
[0027] Figure 8 Schematic diagram of the roller of the first driving mechanism provided by this application with an inverted V-shaped notch.
[0028] Reference numerals in the drawings: 100 - guiding mechanism, 110 - track, 111 - track body, 112 - guiding joint, 120 - limiting member, 200 - platform main body, 210 - first driving mechanism, 211 - roller, 220 - second driving mechanism, 230 - telescopic vehicle frame, 20 - curved bridge, 21 - bridge deck, 22 - curbstone. Detailed implementation manners
[0029] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0030] In addition, this application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.
[0031] By providing a construction platform for a steel box continuous bridge in the embodiments of this application, the technical problem in the prior art that the construction platform cannot adaptively turn and thus cannot walk on the curved bridge deck and must rely on a hoisting device for correction is solved.
[0032] The upper structure of the cross-sea bridge is a split-type steel box continuous beam. Specifically, after being assembled into a single-span large segment of about 100 m in the factory, it is transported to the bridge site for erection, and then the circumferential joints between the large segments are welded to form a continuous beam. During the construction of the circumferential joints of the steel box girder at the bridge site, in order to ensure the construction quality and safety of the butt welds of the bottom plate and the web, a reliable construction platform is often required. Please refer to Figure 1 ,Figure 1 The platform body for providing working positions for the staff is shown. The construction platform can move along the extending direction of the bridge, so as to realize the construction of the full span of the bridge.
[0033] Please refer to Figure 1 and Figure 2 , Figure 2 which is Figure 1 the enlarged view of the partial structure in Figure 2 The relative position relationship between the guiding mechanism 100 and the bridge deck 21 of the curved bridge 20 is shown, and the cooperation relationship between the guiding mechanism 100 and the platform body 200 is also shown.
[0034] Please refer to Figure 2 , the guiding mechanism 100 includes a track 110 and at least two limiting members 120. All the limiting members 120 are connected to one side of the track 110 along its running linear shape. The track 110 is used to be placed on the bridge deck 21 of the curved bridge 20, and the limiting members 120 are used to closely adhere to the curb 22 of the curved bridge 20. The height of the curb 22 of the curved bridge 20 is about 7 cm. Place the track 110 on the bridge deck 21 of the curved bridge 20 and make the limiting members 120 contact with the curb 22 of the curved bridge 20, so that the track 110 can be distributed according to the running linear shape of the curved bridge 20, or it can be described that the track 110 is consistent with the running linear shape of the curved bridge 20. Here, a full explanation is given for the track 110 being consistent with the running linear shape of the curved bridge 20. This sentence does not limit that the running linear shape of the track 110 must be exactly the same as that of the curved bridge 20. They can be the same or there can be differences; this sentence is a functional limitation, referring to that when the track 110 guides the movement of the platform body 200, the moving direction of the platform body 200 can be automatically corrected according to the running linear shape of the curved bridge 20.
[0035] Please refer to Figure 1 , the platform body 200 includes a main structure, and the main structure is used to provide a welding construction work station for the steel box continuous bridge. The main structure includes a telescopic vehicle frame 230 whose position can be relatively adjusted to adapt to curved bridges 20 with different widths. The platform body 200 includes a driving mechanism to realize the function of the main structure walking relative to the curved bridge 20. The platform body 200 also includes a frame structure connected between the main structure and the driving mechanism.
[0036] Please refer to Figure 1 , the driving mechanism includes a first driving mechanism 210 and a second driving mechanism 220. The second driving mechanism 220 directly walks on the bridge deck 21 of the curved bridge 20, and the first driving mechanism 210 walks on the track 110.Figure 3 which shows the relative relationship between the first driving mechanism 210 and the track from the side. Please refer to Figure 1 , the second driving mechanism 220 is farther away from the closest curb 22 than the first driving mechanism 210. On the basis that the construction platform has the function of moving along the bridge extension direction and providing an operation position for the staff in the traditional way, the first driving mechanism 210 of the construction platform is improved, maintaining the original setting basis of the second driving mechanism 220 that the construction platform directly walks on the bridge deck 21 of the curved bridge 20. The guiding mechanism 100 plays a guiding role for the first driving mechanism 210.
[0037] For the basic condition that the alignment of the curved bridge 20 is a circular curve, the proposed solution of this application adopts the above-mentioned guiding mechanism 100 and the first driving mechanism 210, so that the walking direction of the platform main body 200 is consistent with the alignment of the curved bridge 20. Compared with the previous solution that the platform for bridge construction can only walk in a straight line, the proposed solution of this application can realize the automatic correction of the walking direction of the construction platform, and can realize the automatic correction of the walking direction based on the curved bridge 20 without the assistance of a lifting device, solving the problem that the construction platform can walk independently over a long distance on the bridge deck 21 of the curved bridge 20 without the help of a lifting device. It is especially suitable for cross-sea curved bridge 20 bridges and can be applied to curved bridge 20 bridges with different cross-sea curvatures.
[0038] Compared with walking independently over a long distance with the help of a lifting device, the proposed solution of this application has the advantages of convenience, speed, safety, reliability and low manufacturing cost.
[0039] In some embodiments, considering the actual implementation environment, the construction platform is provided with at least two guiding mechanisms 100. The at least two guiding mechanisms 100 are used to be alternately arranged along the alignment direction of the curved bridge 20. Specifically, by alternately arranging the two guiding mechanisms 100 along the alignment direction of the curved bridge 20, the platform main body 200 of the construction platform can always walk on the track 110, and the platform main body 200 of the construction platform can walk within the full span range of the curved bridge 20. On the other hand, the overall specification of the track 110 is reduced, and there is no need to design the length of the track 110 to be enlarged, reducing the manufacturing cost of the construction platform and also reducing the operation difficulty of the construction platform.
[0040] For the convenience of docking between two adjacent tracks 110, please refer to Figures 4 to 7, in some embodiments, the track 110 includes a track body 111 and a guiding joint 112. The above-mentioned limiting member 120 is fixedly connected to the track body 111. The track body 111 also has a running alignment. All the limiting members 120 are connected to the linear side of the track body 111. The guiding joint 112 is connected to one end of the track body 111 in the length direction. The guiding joint 112 is used to overlap with the track body 111 of another track 110. The sequential placement of two tracks 110 is realized by overlapping the guiding joint 112 with the track body 111 of another track 110. After the first driving mechanism 210 of the platform body 200 walks from the previous track 110 to the next track 110, the previous track 110 is moved behind the next track 110, providing an implementation basis for the continuous walking of the platform body 200. In this solution, the solution of overlapping the guiding joint 112 with the track body 111 of another track 110 is adopted, which facilitates the docking and placement of two guiding mechanisms 100.
[0041] In some embodiments, please refer to Figure 5 , a single track body 111 is a straight structure. Please refer to Figure 4 , at least two guiding mechanisms 100 are alternately arranged along the running alignment direction of the curved bridge 20. Figure 4 shows a scene where the side alignment of the curb 22 is a circular curve. Since the side alignment of the curb 22 is a circular curve, a small fold angle is formed at the connection of two tracks 110. When the first driving mechanism 210 of the platform body 200 of the construction platform walks from the previous track 110 to the next track 110, the platform automatically corrects the walking direction at the fold angle.
[0042] In some embodiments, please refer to Figures 5 to 7 , the track body 111 is an angle steel structure. The track body 111 is made of angle steel. When the track 110 is placed on the bridge deck 21 of the curved bridge 20, the track body 111 is in accordance with Figure 7It is arranged in the shown orientation. Specifically, the two side parts of the angle steel of the track body 111 are laid on the bridge deck 21, and the turning part of the angle steel of the track body 111 is located at the uppermost side, which can realize the stable placement of the track body 111 on the bridge deck 21. Especially when the first driving mechanism 210 of the platform main body 200 travels on the track 110, the track 110 and the bridge deck 21 can be kept relatively stationary. Correspondingly, the guiding joint 112 is also of an angle steel structure, and the side width of the angle steel of the guiding joint 112 is smaller than that of the angle steel of the track body 111. The guiding joint 112 is connected to the inner side of one end of the length of the angle steel of the track body 111 and protrudes compared with the track body 111. When the guiding joint 112 and the track body 111 of another track 110 overlap, specifically, the track body 111 of another track 110 can cover the guiding joint 112. By restricting the spatial position of the track body 111 of another track 110 through the guiding joint 112, the positioning between the two tracks 110 can be conveniently realized.
[0043] Correspondingly, please refer to Figure 8 , a reverse V-shaped notch is provided on the wheel surface of the roller 211 to which the first driving mechanism 210 belongs. Through the reverse V-shaped notch, the cooperation between the roller 211 of the first driving mechanism 210 and the track body 111 is realized, so that the first driving mechanism 210 can smoothly travel on the track 110.
[0044] Based on the fact that the track body 111 is of a straight-line structure, the track body 111 is further designed as a short straight line, and the length of the track body 111 is controlled within the range of 2m - 3m to meet the actual requirements of on-site construction.
[0045] Please refer to Figure 4 , Figure 4 shows a scheme in which two tracks 110 are used in cooperation. In the overall scheme, three or more tracks 110 can also be adopted. The redundant tracks 110 can be used as spare tracks 110, or an implementation scheme in which three tracks 110 are alternately arranged, which improves the flexibility of the solution of the present application.
[0046] Please refer to Figure 6 , on the basis that the track body 111 is of a straight-line structure, the lengths of the two limit pieces 120 connected to the track body 111 are equal, and the two limit pieces 120 connected to the track body 111 are relatively parallel. During the process of alternately arranging the two guiding mechanisms 100 along the linear direction of the bending direction of the curved bridge 20, they are alternately moved forward on the premise that the limit pieces 120 of the track 110 are closely attached to the side surface of the curb 22.
[0047] Regarding the above-mentioned fixed connection methods, welding can be adopted. For example, the limit piece 120 is welded to the track body 111, and the track body 111 is welded to the guiding joint 112.
[0048] The present application also provides a construction method for a continuous steel box girder bridge. Based on the above construction platform, the first driving mechanism 210 of the platform main body 200 travels on the guiding mechanism 100. Specifically, the limiting member 120 of the guiding mechanism 100 is closely attached to the inner side of the curb 22 of the curved bridge 20, and the two guiding mechanisms 100 are arranged front and back along the linear direction of the trend of the curved bridge 20. After completing the circumferential joint welding operation at the current position, when it is necessary to move the platform main body 200 from the current position to the next position, the first driving mechanism 210 travels along the track 110 of one guiding mechanism 100 to the track 110 of the other guiding mechanism 100. During the driving process of the construction platform, the two guiding mechanisms 100 alternately move forward, and the limiting member 120 is always maintained in close contact with the inner side of the curb 22 until the platform main body 200 moves to the next position for circumferential joint welding operation.
[0049] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.
[0050] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.
[0051] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.
Claims
1. A construction platform for a continuous steel box girder bridge, characterized in that, Including: A guiding mechanism, including a track and at least two limiting members both connected to one side of the track along its alignment. The track is for being placed on the bridge deck of a curved bridge, and the limiting members are for closely adhering to the curbstone of the curved bridge. A platform main body, including a first driving mechanism walking on the track and a second driving mechanism directly walking on the bridge deck of the curved bridge. Wherein, the track is for automatically correcting the moving direction of the platform main body according to the alignment of the curved bridge.
2. The construction platform according to claim 1, wherein The construction platform is provided with at least two guiding mechanisms, and the at least two guiding mechanisms are for being alternately placed along the alignment direction of the curved bridge.
3. The construction platform according to claim 2, characterized in that, The track includes: A track body, to which the limiting members are fixedly connected. A guiding joint, connected to one end of the track body in terms of length. The guiding joint is for overlapping with the track body of another track to realize the sequential placement of the two tracks.
4. The construction platform according to claim 3, wherein A single track body is a straight structure, and at least two guiding mechanisms are alternately placed along the alignment direction of the curved bridge.
5. The construction platform according to claim 4, wherein The track body is an angle steel structure, and the guiding joint is also an angle steel structure. The width of the angle steel of the guiding joint is smaller than the width of the angle steel of the track body. The guiding joint is connected to the inner side of one end of the angle steel length of the track body and protrudes compared with the track body.
6. The construction platform according to claim 4, wherein The length of the track body is 2m - 3m.
7. The construction platform according to claim 5, wherein The track body and the guiding joint are welded.
8. The construction platform according to claim 5, wherein The wheel surface of the roller belonging to the first driving mechanism is provided with an inverted V-shaped notch for cooperating with the track body.
9. The construction platform according to claim 1, wherein The platform main body is provided with a telescopic vehicle frame whose position can be relatively adjusted.
10. A construction method for a continuous steel box bridge, characterized in that: Applying the construction platform according to any one of claims 2 - 10, and making the first driving mechanism of the platform main body walk on the guiding mechanism. Pressing the limiting members of the guiding mechanism closely against the inner side of the curbstone of the curved bridge, placing the two guiding mechanisms front and back along the alignment direction of the curved bridge, and making the first driving mechanism walk along the track of one guiding mechanism to the track of the other guiding mechanism. During the process of driving the construction platform forward, the two guiding mechanisms move forward alternately and always maintain the limiting members closely against the inner side of the curbstone.