Fabricated bridge integrated construction platform and construction method
By combining ground hoisting equipment, bridge deck hoisting equipment, and transportation equipment, and utilizing image information and stress analysis to determine reasonable hoisting points, the safety hazards caused by unreasonable hoisting point selection were resolved, and the safety and uniform stress distribution of bridge deck hoisting were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-17
- Publication Date
- 2026-04-03
AI Technical Summary
In the construction of prefabricated bridges, improper selection of hoisting points can lead to safety hazards during the hoisting of bridge deck panels.
A combination of ground hoisting equipment, bridge deck hoisting equipment, and transportation equipment was used. By acquiring image information and analyzing force balance, reasonable hoisting points were determined, and mobile cranes were used for hoisting to ensure the uniformity of stress and safety of the bridge deck.
This improved the safety and reliability of bridge deck hoisting, reduced safety hazards during hoisting, and ensured the uniform stress distribution of bridge decks during transportation and laying.
Smart Images
Figure CN121781529A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of prefabricated bridge construction, and in particular to an integrated construction platform and construction method for prefabricated bridges. Background Technology
[0002] Prefabricated bridges combine prefabrication technology with on-site assembly technology to build bridges with high efficiency and high quality. The production process of prefabricated bridges includes the production, transportation, and on-site assembly of prefabricated components, which include piers, crossbeams, longitudinal beams, and bridge decks. After production, the prefabricated components are transported to the bridge construction site, where they are assembled using equipment such as cranes to complete the bridge construction.
[0003] The assembly process of prefabricated components includes: first, assembling the piers at pre-selected locations; then, assembling the crossbeams to connect the piers laterally; assembling the longitudinal beams to connect the crossbeams longitudinally; and finally, laying the bridge deck on the longitudinal beams to obtain a prefabricated bridge. During the laying of the bridge deck, hoisting equipment is needed to move the bridge deck to the assembly location. For bridge decks with large lengths, multiple hoisting points need to be moved. If the hoisting points are not selected appropriately, it can create safety hazards during the movement of the bridge deck. Summary of the Invention
[0004] This invention provides an integrated construction platform and method for prefabricated bridges, which addresses the safety hazards caused by improper selection of hoisting points during the assembly of bridge decks.
[0005] Specifically, in a first aspect, the present invention provides an integrated prefabricated bridge construction platform, comprising ground hoisting equipment, bridge deck hoisting equipment, and transportation equipment, wherein: The ground hoisting equipment is used to be set up in the area around the prefabricated bridge and is configured to perform hoisting operations according to the operating instructions of the staff, so as to transport the bridge deck to be assembled to the transport equipment. The transport equipment is used to be installed on the assembled bridge deck of the prefabricated bridge and is configured to obtain the lifting position of the bridge deck hoisting equipment and transport the bridge deck to be assembled from the preset loading position to the lifting position; The bridge deck hoisting equipment includes a hoisting frame and multiple mobile cranes mounted on the hoisting frame, wherein the hoisting frame is used for mounting above the position to be assembled, and the mobile cranes are configured to: After the transport equipment transports the bridge deck to be assembled to the lifting position, image information of the lifting point position is acquired; The hoisting points of the bridge deck to be assembled are determined according to the preset force balance conditions, and the hoisting points are located according to the image information. Move to the position corresponding to the hoisting point, and at that position, lift the bridge deck to be assembled and move it to the position to be laid.
[0006] Furthermore, the ground hoisting equipment is also configured to acquire multiple preset hoisting positions, calculate the transportation distance between each preset hoisting position and the assembly position, and issue path guidance information to move to the preset hoisting position with the shortest transportation distance before transporting the bridge deck to be assembled to the transportation equipment.
[0007] Furthermore, the transport equipment is also used to obtain the preset loading position based on the preset lifting position and the lifting range of the ground lifting equipment after the ground lifting equipment moves to the preset lifting position with the shortest transport distance.
[0008] Furthermore, there are multiple transport devices, and each transport device determines the distance between adjacent transport devices according to the length of the bridge deck to be assembled, and adjusts its own position according to the distance.
[0009] Furthermore, the boom of the ground hoisting equipment is equipped with a camera, and the ground hoisting equipment is also configured to: acquire images of the transport equipment based on the camera, predict the loading effect diagram of the bridge deck to be assembled on the transport equipment based on the images, and display the loading effect diagram on the interactive interface.
[0010] Furthermore, the method for moving the mobile crane to the position corresponding to the hoisting point includes: calibrating its own position to obtain its own position, and moving to the position corresponding to the hoisting point based on its own position.
[0011] Furthermore, a positioning mark is provided on the hoisting frame, and the mobile crane uses the positioning mark to determine its own position.
[0012] Secondly, the present invention also provides a construction method for an integrated prefabricated bridge construction platform, comprising: After the transport equipment transports the bridge deck to be assembled to the lifting position, image information of the lifting point position is acquired; The hoisting points of the bridge deck to be assembled are determined according to the preset force balance conditions, and the hoisting points are located according to the image information. Move to the position corresponding to the hoisting point, and at that position, lift the bridge deck to be assembled and move it to the position to be laid.
[0013] The technical solution of this invention involves transporting the bridge deck to be assembled to the lifting position of the bridge deck hoisting equipment. The mobile crane first performs a stress analysis on the bridge deck to be assembled to obtain a lifting point that satisfies the preset stress balance conditions. Then, the position information of this lifting point is obtained through image information of the lifting position, and the bridge deck to be assembled is lifted at the corresponding position. Because the lifting point satisfies the preset stress balance conditions, lifting the bridge deck to be assembled at this point ensures the uniformity of the stress on the bridge deck, thereby improving the safety of the bridge deck hoisting process.
[0014] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description
[0015] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a schematic structural diagram of an integrated prefabricated bridge construction platform according to an embodiment of the present invention; Figure 2 This is a flowchart illustrating the control method of a mobile crane in an integrated prefabricated bridge construction platform according to an embodiment of the present invention. Detailed Implementation
[0016] The following reference Figures 1 to 2 This invention describes an integrated prefabricated bridge construction platform and construction method according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.
[0017] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0018] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0019] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0020] Please see Figure 1 , Figure 1 The diagram shown is a schematic structural diagram of a prefabricated bridge construction platform in some embodiments of the present invention. This construction platform is used to lay the bridge deck of a prefabricated bridge and improve the safety and reliability of the laying process.
[0021] The prefabricated bridge in this embodiment includes piers 40. After assembling crossbeams and longitudinal beams on the piers 40, a bridge deck 41 is laid on the longitudinal beams. Each bridge deck 41 is assembled on two adjacent piers 40. In order to more clearly describe the technical solution of this application, the piers 40 are sorted according to the assembly order of the bridge deck 41. Taking one pier 40 as an example, after the bridge deck 41 is assembled between this pier 40 and the previous pier 40, the position between this pier 40 and the next pier 40 is the position to be assembled.
[0022] The construction platform in this embodiment includes a ground hoisting device 10, a bridge deck hoisting device 20, and a transportation device 30. The ground hoisting device 10 is set on the ground around the prefabricated bridge and is used to move the bridge deck to be assembled from the ground to the transportation device 30. The transportation device 30 is set on the paved bridge deck of the prefabricated bridge and is used to transport the bridge deck to be assembled to the lifting position of the bridge deck hoisting device 20. The bridge deck hoisting device 20 includes a hoisting frame 21 and a mobile crane 22. The hoisting frame 21 is installed above the position to be assembled. The mobile crane 22 is set on the hoisting frame 21 and can move along its length on the hoisting frame 21. The mobile crane 22 is equipped with a robotic arm that can grab the bridge deck to be assembled and move the bridge deck to be assembled from the lifting position to the assembly position.
[0023] Taking one of the bridge piers 40 as an example, if the position between the bridge pier 40 and the next bridge pier 40 is the position to be assembled, then the hoisting frame 20 is assembled on the bridge pier 40 and the bridge pier 40 before and after the bridge pier 40, and the assembled bridge deck between the bridge pier 40 and the bridge pier 40 before it is the lifting position of the bridge deck hoisting equipment 20.
[0024] In this embodiment, the ground lifting equipment 10 and the transportation equipment 30 are wirelessly connected. The transportation equipment 30 can move to the preset loading position of the assembled bridge deck. The ground lifting equipment 10 can be operated by the staff. That is, the staff can operate the ground lifting equipment 10 to lift the bridge deck to be assembled and move it to a position at a set height above the transportation equipment 30; then lower the height of the bridge deck to be assembled to move the bridge deck to be assembled onto the transportation equipment 30, and send the loading completion information to the transportation equipment 30.
[0025] The transport equipment 30 is configured to: acquire the lifting position of the bridge deck hoisting equipment 20, and after receiving the loading completion information from the ground hoisting equipment 10, transport the bridge deck to be assembled from the preset loading position to the lifting position. A camera is installed on the hoisting frame 21, which is wirelessly connected to each mobile crane 22 to capture images of the lifting position of the bridge deck hoisting equipment 20 and send them to each mobile crane 22. Based on the images of the lifting position, the mobile crane 22 determines whether the transport equipment 30 has transported the bridge deck to be assembled to that lifting position; if so, it lifts the bridge deck to be assembled and moves it to the assembly position.
[0026] In this embodiment, the method for the mobile crane 22 to lift the bridge deck to be assembled and move it to the assembly position is as follows: Figure 2 As shown, it includes the following steps: Step S101: Perform stress analysis on the bridge deck to be assembled to obtain the hoisting points on the bridge deck to be assembled that meet the preset stress balance conditions. Step S102: Obtain image information of the lifting position, and locate the lifting point of the bridge deck to be assembled based on the image information to obtain the position information of the lifting point; Step S103: Move to the position corresponding to the hoisting point, lift the bridge deck to be assembled and transport it to the paving position.
[0027] In step S101 above, assuming the number of mobile cranes 22 is n, the number of lifting positions for the bridge deck to be assembled is also n. In this embodiment, the n lifting points that satisfy the preset force balance conditions can be obtained through force analysis of the bridge deck to be assembled, and these n lifting points can ensure the force balance of the bridge deck to be assembled.
[0028] In this embodiment, the mobile crane 22 can use finite element software to construct a finite element model of the bridge deck to be assembled, and randomly select n evenly distributed lifting points. That is, if the length of the bridge deck to be assembled is L, then the distance between adjacent lifting points is... L / (n-1) Furthermore, the distance between the hoisting points at both ends and the corresponding ends of the bridge deck to be assembled is... L / (n-1) Then, the finite element model is used to analyze the stress at each hoisting point during the hoisting process; if the stress at each hoisting point is the same, it is determined that these n hoisting points meet the preset force balance condition.
[0029] In step S102 above, the hoisting point can be located by the image information of the hoisting position to obtain the relative position of each hoisting point and the camera, and the position information of each hoisting point can be obtained according to the assembly position of the camera on the hoisting frame 21 and the relative position.
[0030] In step S103 above, each mobile crane 22 corresponds to a lifting point. After each mobile crane 22 moves above its corresponding lifting point, it extends its robotic arm to grab the corresponding lifting point and moves it. After moving above the assembly position, it extends its robotic arm to place the bridge deck to be assembled onto the assembly position.
[0031] For example, in this embodiment, multiple radio frequency tags can be set on the hoisting frame 21 above the assembly position, and each radio frequency tag corresponds to a mobile crane 22; each mobile crane 22 is equipped with a radio frequency receiver, and each radio frequency receiver determines that the bridge surface to be assembled has been moved above the assembly position after detecting its corresponding radio frequency tag.
[0032] As described above, in this embodiment, after the transport equipment transports the bridge deck to be assembled to the lifting position of the bridge deck hoisting equipment, the mobile crane first performs a stress analysis on the bridge deck to be assembled to obtain the hoisting point that meets the preset stress balance conditions. Then, it obtains the position information of the hoisting point through image information of the lifting position, and lifts the bridge deck to be assembled at the position corresponding to the hoisting point. Since the hoisting point meets the preset stress balance conditions, lifting the bridge deck to be assembled at this hoisting point can ensure the uniformity of the stress on the bridge deck to be assembled, thereby improving the safety of the bridge deck hoisting.
[0033] In some embodiments of the present invention, multiple preset hoisting locations can be pre-determined in the area surrounding the prefabricated bridge, and these preset hoisting locations must meet the conditions for hoisting operations. Furthermore, the ground hoisting equipment 10 in this embodiment is also configured to: Multiple preset hoisting positions are obtained, and the transportation distance between each preset hoisting position and the position to be assembled is calculated; and before loading the bridge deck to be assembled onto the transportation equipment 30, path guidance information is issued to guide the ground hoisting equipment 10 to move to the preset hoisting position with the smallest transportation distance from the position to be assembled.
[0034] Specifically, since the transport equipment 30 needs to move on the paved bridge deck to transport the bridge deck to be assembled to the lifting position, the method for obtaining the transport distance between the preset lifting position and the assembly position in this embodiment includes: First, the location where the lifting range of the ground hoisting equipment 10 intersects with the paved bridge deck at the preset hoisting position is obtained, and the location from the paved bridge deck to the assembly position is determined. The distance from this location to the assembly position via the paved bridge deck is the transportation distance between the preset hoisting position and the assembly position.
[0035] In this embodiment, the ground hoisting equipment 10 can obtain the navigation route between the current location and the preset hoisting location with the shortest transportation distance, and issue a prompt voice to form path guidance information, prompting the staff to move to the preset hoisting location with the shortest transportation distance according to the navigation route.
[0036] In this embodiment, the ground hoisting equipment 10 can determine the preset hoisting position according to the position to be assembled, which can reduce the transportation distance of the transportation equipment 30 to transport the bridge deck to be assembled, and improve the endurance and working efficiency of the transportation equipment 30.
[0037] Furthermore, in some embodiments of the present invention, the transport equipment 30 is also configured to: after the ground hoisting equipment 10 moves to a preset hoisting position with the minimum transport distance to the assembly position, determine a preset loading position based on the preset hoisting position and the hoisting range of the ground hoisting equipment 10.
[0038] In this embodiment, the transport equipment 30 is communicatively connected to the ground hoisting equipment 10. After the ground hoisting equipment 10 moves to a preset hoisting position with the minimum transport distance to the assembly position, it sends the location information of the preset hoisting position to the transport equipment 30. After obtaining the hoisting range of the ground hoisting equipment 10, the transport equipment 30 obtains the intersection area between the hoisting range and the already laid bridge deck, and uses the position in the intersection area that is closest to the assembly position as the assembly position for the transport equipment 30 to load the bridge deck to be assembled.
[0039] In this embodiment, the transport equipment 30 accurately obtains the assembly position based on the preset hoisting position and hoisting range of the ground hoisting equipment 10, and can load the bridge deck to be assembled at the assembly position and transport it to the hoisting position, thereby improving the reliability of transporting the bridge deck to be assembled.
[0040] In some embodiments of the present invention, the construction platform has multiple transport devices 30, and each transport device 30 is further configured to: determine the distance between itself and other transport devices 30 according to the length of the bridge deck to be assembled, and adjust its own position according to the distance.
[0041] For example, suppose the length of the transport equipment 30 is l And if the number of transport equipment 30 is m, then the distance d between adjacent transport equipment 30 is... d=(Lm×l) / (m-1) The method for adjusting the position of the transport equipment 30 according to the distance d includes: taking the direction of travel as the front, the transport equipment 30 at the front moves at a preset speed, and other transport equipment 30 detects the distance between itself and the transport equipment 30 in front through devices such as infrared ranging sensors, and controls its own speed according to the distance, so as to keep the distance between itself and the transport equipment 30 in front of it at d.
[0042] In this embodiment, multiple transport devices 30 are used to transport the bridge deck to be laid. The spacing between each transport device 30 is set according to the length of the bridge deck to be laid and the number of transport devices 30. This can ensure the stress balance of the bridge deck to be laid during transportation and improve the safety and reliability of transporting the bridge deck to be laid.
[0043] In some embodiments of the present invention, the ground hoisting equipment 10 is also used to acquire image information of the transport equipment 30, predict the loading effect diagram of the bridge deck to be assembled on the transport equipment 30 based on the image information, and display the loading effect diagram on the interactive interface.
[0044] In this embodiment, the ground hoisting equipment 10 can generate a projected track for placing the bridge deck to be assembled and load the projected track onto the image of the transport equipment 30 so that the staff can determine whether it is appropriate to place the bridge deck to be assembled onto the transport equipment.
[0045] In this embodiment, the ground hoisting equipment 10 can predict the loading effect diagram of the bridge deck to be assembled on the transport equipment 30, so that the staff can adjust the assembly method of the bridge deck to be assembled on the transport equipment 30 according to the loading effect diagram, so as to ensure the stability and safety of the bridge deck to be assembled on the transport equipment 30.
[0046] In some embodiments of the present invention, the method of transporting the bridge deck to be assembled by the transport equipment 30 to the lifting position includes: calibrating itself to determine its own position information, obtaining a transport path based on the position information and a preset loading position, and arriving at the preset loading position according to the transport path; after the ground hoisting equipment loads the bridge deck to be assembled onto the transport equipment 30, transporting the bridge deck to be assembled to the lifting position.
[0047] After obtaining the hoisting position, the mobile crane 22 calculates the distance between the current position and the hoisting position, and then moves according to the distance to reach the hoisting position.
[0048] In this embodiment, the transport equipment 30 first locates itself to obtain its own position information, and then moves to the preset loading position according to its own position information, thus improving the accuracy of reaching the preset loading position.
[0049] Furthermore, in some embodiments of the present invention, a positioning mark is provided on the hoisting frame 21, and the mobile crane 22 calibrates its own position according to the positioning mark.
[0050] Specifically, an RFID tag can be installed at a designated location on the hoisting frame 21, which serves as a positioning marker; correspondingly, an RFID receiver is provided on the mobile crane 22, which can detect the RFID signal emitted by the RFID tag to determine the position of the mobile crane 22 on the hoisting frame 21.
[0051] In this embodiment, since the mobile crane 22 has a single movement path, the mobile crane 22 can calibrate itself according to the positioning mark, which can not only improve the positioning accuracy, but also improve the positioning efficiency.
[0052] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.
Claims
1. A prefabricated bridge integrated construction platform, characterized in that, This includes ground lifting equipment, bridge deck lifting equipment, and transportation equipment, among which: The ground hoisting equipment is used to be set up in the area around the prefabricated bridge and is configured to perform hoisting operations according to the operating instructions of the staff, so as to transport the bridge deck to be assembled to the transport equipment. The transport equipment is used to be installed on the assembled bridge deck of the prefabricated bridge and is configured to obtain the lifting position of the bridge deck hoisting equipment and transport the bridge deck to be assembled from the preset loading position to the lifting position; The bridge deck hoisting equipment includes a hoisting frame and multiple mobile cranes mounted on the hoisting frame, wherein the hoisting frame is used for mounting above the position to be assembled, and the mobile cranes are configured to: After the transport equipment transports the bridge deck to be assembled to the lifting position, image information of the lifting point position is acquired; The hoisting points of the bridge deck to be assembled are determined according to the preset force balance conditions, and the hoisting points are located according to the image information. Move to the position corresponding to the hoisting point, and at that position, lift the bridge deck to be assembled and move it to the position to be laid.
2. The prefabricated bridge integrated construction platform according to claim 1, characterized in that, The ground hoisting equipment is also configured to acquire multiple preset hoisting positions, calculate the transportation distance between each preset hoisting position and the position to be assembled, and issue path guidance information to move to the preset hoisting position with the shortest transportation distance before transporting the bridge deck to be assembled to the transportation equipment.
3. The prefabricated bridge integrated construction platform according to claim 2, characterized in that, The transport equipment is also used to obtain the preset loading position based on the preset lifting position and the lifting range of the ground lifting equipment after the ground lifting equipment moves to the preset lifting position with the shortest transport distance.
4. The prefabricated bridge integrated construction platform according to claim 1, characterized in that, There are multiple transport devices. Each transport device determines the distance between adjacent transport devices based on the length of the bridge deck to be assembled, and adjusts its own position according to the distance.
5. The prefabricated bridge integrated construction platform according to claim 1, characterized in that, The boom of the ground hoisting equipment is equipped with a camera, and the ground hoisting equipment is also configured to: acquire images of the transport equipment based on the camera, predict the loading effect diagram of the bridge deck to be assembled on the transport equipment based on the images, and display the loading effect diagram on the interactive interface.
6. The prefabricated bridge integrated construction platform according to claim 1, characterized in that, The method for moving the mobile crane to the position corresponding to the hoisting point includes: calibrating its own position to obtain its own position, and moving to the position corresponding to the hoisting point based on its own position.
7. The prefabricated bridge integrated construction platform according to claim 6, characterized in that, A positioning mark is provided on the hoisting frame, and the mobile crane uses the positioning mark to determine its own position.
8. A construction method for an integrated prefabricated bridge construction platform as described in any one of claims 1-7, characterized in that, include: After the transport equipment transports the bridge deck to be assembled to the lifting position, image information of the lifting point position is acquired; The hoisting points of the bridge deck to be assembled are determined according to the preset force balance conditions, and the hoisting points are located according to the image information. Move to the position corresponding to the hoisting point, and at that position, lift the bridge deck to be assembled and move it to the position to be laid.