Bridge renewal method and support system

Abstract

To provide a renewal method and a support system that can reduce a construction period for bridge renewal work, including a period of traffic restriction.SOLUTION: A support system 10 is a system that supports renewal work for a bridge in which multiple deck slabs are arranged side by side in a bridge axial direction. The support system 10 acquires on-road point cloud data of an existing bridge taken from above, and under-road point cloud data of the existing bridge obtained by imaging the underside of the existing bridge, and generates a 3D model of the existing bridge by combining the on-road point cloud data with the under-road point cloud data. The support system 10 allocates new floor slabs and generates design data for new floor slabs through allocation simulation based on the 3D model and allocation rules.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a bridge renewal method and a support system.

Background Art

[0002] Renewal work for renewing existing bridges is being carried out. In the renewal work, for example, as in Patent Document 1, the floor slabs arranged side by side in the bridge axis direction are replaced. Specifically, first, after assembling a scaffold around the bridge, the bridge is surveyed using the scaffold. Then, based on the survey results and the as-built drawing created at the time of construction, the difference between the current bridge and the as-built drawing is grasped. Next, based on the as-built drawing, the difference between the current bridge and the as-built drawing, and the allocation rules, the designer allocates the newly installed floor slab to be actually installed to perform the design of the newly installed floor slab. After the newly installed floor slab is manufactured based on the designer's design, it is transported to the construction site. At the construction site, after removing the existing floor slab and exposing the existing girder, the transported newly installed floor slab is installed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the above-described renewal work is carried out, for example, on a highway under traffic control such as a road closure, so traffic becomes congested or jammed on the roads around the site. Therefore, shortening the construction period of the bridge renewal work including the traffic control period is required.

Means for Solving the Problems

[0005] The bridge renewal method for solving the above problems is a bridge renewal method for renewing a bridge in which a plurality of floor slabs are arranged side by side in the bridge axis direction. An assistance system for assisting the renewal of the bridge acquires the on-road point cloud data of the existing bridge and the under-road point cloud data of the existing bridge, synthesizes the on-road point cloud data and the under-road point cloud data to create a 3D model of the existing bridge, performs allocation of a newly installed floor slab by an allocation simulation based on the 3D model and an allocation rule, and creates design data of the newly installed floor slab.

Effect of the Invention

[0006] According to the present invention, the construction period of the bridge renewal work can be shortened.

Brief Description of the Drawings

[0007]

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Mode for Carrying Out the Invention

[0008] With reference to FIGS. 1 to 12, an embodiment of a bridge renewal method and its support system will be described. In this embodiment, the case of replacing an existing floor slab in the renewal work will be described.

[0009] As shown in FIG. 1, in the renewal work of replacing the existing floor slab of an existing bridge, a design preparation process (step S101), a design process (step S102), a floor slab production process (step S103), a construction preparation process (step S104), and a construction process (step S105) are performed.

[0010] As shown in FIG. 2, a support system 10 for supporting renewal work includes a design support system 20, a production support system 30, and a construction support system 40. The design support system 20 is a system used by a designer who designs renewal work. The design support system 20 includes a design support device 21. The production support system 30 is a system used by a producer who produces an object to be replaced such as a floor slab. The production support system 30 includes a production support device 31. The construction support system 40 is a system used by a constructor who constructs renewal work. The construction support system 40 includes a construction support device 41. These support devices (21, 31, 41) are configured to be able to communicate with each other via a server 100. That is, each support device (21, 31, 41) is configured to be able to share information uploaded to the server 100.

[0011] As shown in FIG. 3, each of the support devices (21, 31, 41) and the server 100 are configured around the information processing device H10. The information processing device H10 includes a communication device H11, an input device H12, a display device H13, a storage device H14, and a processor H15. Note that this hardware configuration is an example, and it may have other hardware.

[0012] The communication device H11 is an interface that establishes a communication path with other devices and executes data transmission and reception. The input device H12 is a device that receives input from an operator, such as a mouse or a keyboard. The display device H13 is a display or a touch panel that displays various information. The storage device H14 is a storage unit that stores data and various programs for executing various functions. Examples of the storage device H14 include a ROM, a RAM, and a hard disk.

[0013] The processor H15 controls each process in each support device using programs and data stored in the storage device H14. Examples of the processor H15 include a CPU and an MPU. This processor H15 expands a program stored in a ROM or the like into a RAM and executes various processes corresponding to various processes. For example, when a predetermined application program is started, the processor H15 operates a process that executes each process according to the program.

[0014] The processor H15 is not limited to performing software processing for all processes it executes. For example, the processor H15 may include a dedicated hardware circuit (e.g., an application-specific integrated circuit: ASIC) that performs hardware processing for at least a part of the processes it executes. That is, the processor H15 may be configured as follows.

[0015] (1) One or more processors that operate according to a computer program (software) (2) one or more dedicated hardware circuits that execute at least some of the various processes, or (3) a combination thereof, circuitry Processor H15 includes a CPU and memories such as RAM and ROM. The memories store program codes or instructions configured to cause the CPU to execute processes. The memories, i.e., computer-readable media, include any available media accessible by a general-purpose or dedicated computer.

[0016] (Design Preparation Process) The design preparation process (step S101) is performed using the design support system 20. The design preparation process is a process of imaging an existing bridge to obtain point cloud data and creating CIM data of the existing bridge based on the point cloud data. The point cloud data of the existing bridge is composed of on-road point cloud data obtained by imaging the existing bridge from above and under-road point cloud data obtained by imaging the existing bridge from below. Calibration points serving as a reference for synthesizing the on-road point cloud data and the under-road point cloud data are provided at various locations of the existing bridge.

[0017] As shown in FIG. 4, the design preparation process includes an on-road point cloud data acquisition process (step S201), an under-road point cloud data acquisition process (step S202), and a model creation process (step S203).

[0018] As shown in FIG. 5, in the on-road point cloud data acquisition process (step S201), on-road point cloud data is acquired using an on-road camera 23 mounted on an unmanned aerial vehicle 22 having the periphery of the existing bridge 50 as a flight area.

[0019] Regarding the right side of the existing bridge 50, imaging is performed using the unmanned aircraft 22 flying over the right side of the existing bridge 50. Regarding the left side of the existing bridge 50, imaging is performed using the unmanned aircraft 22 flying over the left side of the existing bridge 50. The road imaging camera 23 is preferably imaged from 45 degrees and 60 degrees obliquely with respect to a predetermined reference point of the existing bridge 50 so as not to obstruct traffic even if the unmanned aircraft 22 falls. The road imaging camera 23 acquires road point cloud data by imaging the existing bridge 50 from above while flying over the existing bridge 50 with the unmanned aircraft 22. The road point cloud data is input into the design support device 21 when the road imaging camera 23 is connected to the design support device 21.

[0020] As shown in FIG. 6, in the under-road point cloud data acquisition step (step S202), under-road point cloud data is acquired by the under-road imaging camera 26 mounted on the mobile robot 25 moving along the existing girder 51. The mobile robot 25 is configured to be supported by the lower flanges 52 of a pair of adjacent existing girders 51 in the direction perpendicular to the bridge axis and to be movable in the bridge axis direction. The mobile robot 25 has a mover 27 and an erection member 28. The mover 27 moves in the bridge axis direction on the lower flange 52 as the rollers 29 arranged so as to sandwich the web 53 roll on the lower flange 52 of each existing girder 51. The erection member 28 connects the lower end portions of the movers 27 below the existing girder 51. The under-road imaging camera 26 is mounted on the erection member 28 so as to be disposed at the center of the pair of movers 27. The under-road imaging camera 26 acquires under-road point cloud data of the imaging range by imaging the under-road of the existing bridge 50 while moving in the bridge axis direction by the mobile robot 25. The under-road point cloud data is input into the design support device 21 when the under-road imaging camera 26 is connected to the design support device 21. By performing such under-road imaging for the entire existing bridge 50, under-road point cloud data of the entire existing bridge 50 is acquired.

[0021] In the model creation process (step S203), in the design support device 21, a model generation process is executed. In the model generation process, the design support device 21 synthesizes the on-road point cloud data and the under-road point cloud data based on the reference points included in each data, and creates CIM (Construction Information Modeling) data, which is 3D model data for reproducing the existing bridge 50.

[0022] In this way, by obtaining the on-road point cloud data and the under-road point cloud data capable of creating the CIM data of the existing bridge 50 by the method described above, it is possible to survey the existing bridge 50 without restricting the road leading to the existing bridge 50. Note that the on-road point cloud data acquisition process (step S201) and the under-road point cloud data acquisition process (step S202) may be performed in parallel, or the under-road point cloud data acquisition process (step S202) may be performed first.

[0023] (Design process) The design process (step S102) is performed using the design support system 20. The design process is a process of designing a new floor slab to be installed on the existing girder 51 based on the CIM data.

[0024] As shown in FIG. 7, in the design process, first, an allocation rule setting process is performed (step S301). In the allocation rule setting process, the designer operates the design support device 21 to input various information. Basically, the designer sets the allocation rules so that the types of new floor slabs are reduced, that is, the number of new floor slabs with different shapes is reduced. In addition to the basic design items of the new floor slab such as the overall range where the new floor slab is installed, the materials used, and the arrangement of steel bars, the designer sets the fixing position of the attachment plate and the non-arrangement area of the joint part of the new floor slab as allocation rules.

[0025] Next, an allocation process (step S302) is performed. In the allocation process, an allocation process is executed by the design support device 21. The allocation process is started when the designer performs an allocation start operation on the design support device 21.

[0026] In the allocation process, the design support device 21 performs allocation simulation based on the CIM data and the allocation rules, thereby allocating the newly installed floor slab to be installed on the existing girder 51. The design support device 21 creates allocation proposal data indicating the allocation proposal that is the result of the allocation simulation. The allocation proposal data is 3D model data capable of displaying the state in which the newly installed floor slab is installed on the existing girder 51.

[0027] As shown in FIG. 8, on the display device H13 of the design support device 21, a top view of the state in which the newly installed floor slab 55 is installed on the existing girder 51 is displayed as an allocation proposal. Also, the newly installed floor slabs 55 are color-coded for each shape. In FIG. 8, different-shaped newly installed floor slabs 55a, 55b, 55c, 55d are allocated as the newly installed floor slab 55, and the difference in their colors is shown by the difference in dots.

[0028] When the allocation process is completed, a check process is performed (step S303). In the check process, the designer checks the allocation proposal. In checking the allocation proposal, the designer confirms the presence or absence of problems in the allocation proposal based on the allocation proposal data (step S304). Specifically, the designer checks the reinforcement interference between adjacent floor slabs, the interference between the floor slab and the attachment plate, the positional relationship between the floor slab and the fixture of the wall railing, etc.

[0029] For example, as shown in FIG. 9, the designer checks whether the hunch portion 58 of the newly installed floor slab 55 is designed so as not to interfere with the fixture 57 of the attachment plate 56. If there are problems (step S304: NO), the designer modifies and re-sets the allocation rules (step S301), and then causes the design support device 21 to execute the allocation process again (step S302). If there are no problems (step S304: YES), a design data creation process for creating design data based on the allocation proposal is performed (step S305).

[0030] In the design data creation process (step S305), the design support device 21 creates design data. The design data is created based on the allocation proposal data. The design data, in addition to the 3D model data of each newly installed floor slab, includes identification information of each newly installed floor slab, design coordinates indicating the installation position, the materials used, the arrangement of steel bars, and data specifying the shape and position of reference marks used when confirming the installation position, etc. When the design data is created, the design support device 21 uploads the design data to the server 100 based on the sharing operation of the designer. The server 100 notifies the production support device 31 of the upload of the design data.

[0031] By creating the design data in this way, the time required for the design process can be significantly shortened. Also, by uploading the design data to the server 100, the design data can be shared between the designer and the producer.

[0032] (Floor slab production process) The floor slab production process (step S103) is performed using the production support system 30. The floor slab production process is a process in which newly installed floor slabs are produced based on the design data.

[0033] The producer inputs the production information of each newly installed floor slab, such as the progress status and the materials used, into the production support device 31. The production support device 31 uploads the input production information to the server 100. Also, a camera 32 (see FIG. 1) capable of imaging the production process may be installed at the production site. This camera 32 is connected to the production support device 31. The production support device 31 uploads the imaging data captured by the camera 32 to the server 100 at any time. Thereby, by accessing the server 100 using the design support device 21, the designer can grasp the production information and the current situation of the production site.

[0034] The manufacturer uses a measuring instrument 33 (see Fig. 1), such as a 3D scanner, to perform three-dimensional measurement on each newly installed floor slab after completion. The manufacturer inputs the identification information of the newly installed floor slab to be measured and the measured data indicating the results of the three-dimensional measurement into the production support device 31. The production support device 31 creates quality record data in which, for the identification information, in addition to the 3D model of the newly installed floor slab based on the measured data, the formed shape error and the like indicating the result of comparing the shape based on the design data and the shape based on the measured data are associated. The quality record data is data capable of displaying the formed shape error as a heat map. The production support device 31 uploads the created quality record data to the server 100. The server 100 notifies the design support device 21 of the upload of the quality record data. Note that identification information is marked at a predetermined position on each completed newly installed floor slab.

[0035] (Construction preparation process) The construction preparation process (step S104) is performed using the design support system 20. In the construction preparation process, the designer accesses the server 100 using the design support device 21 to confirm the quality of the newly installed floor slab to be carried into the construction site based on the quality record data.

[0036] As shown in Fig. 10, the design support device 21 displays the newly installed floor slab 55 as a heat map based on the quality record data. Based on this display, the designer pre-checks the formed shape error of each newly installed floor slab 55 and the deviation from the standard value.

[0037] When the formed shape error of the newly installed floor slab is displayed as a heat map, the designer can easily grasp the special points of each newly installed floor slab. Also, when there are many newly installed floor slabs with a large formed shape error, the designer checks the work content with the captured image of the camera 32 and other production information of the newly installed floor slab, and gives quality improvement guidance and the like to the manufacturer.

[0038] As shown in FIG. 11, after quality confirmation, the design support device 21 performs a formed shape simulation using the quality record data of each newly installed floor slab. In the formed shape simulation, the design support device 21 sequentially installs 3D models of the newly installed floor slabs 55 based on the quality record data on the existing girders 51. Based on the results of the formed shape simulation, the designer checks for interferences with road accessories, etc., cumulative errors during installation, correlation errors with adjacent newly installed floor slabs 55, and interferences with adjacent structures. Also, the designer updates the design data by performing a pre-construction correction simulation using the design support device 21 to correct the design coordinates of the newly installed floor slab based on the results of the formed shape simulation.

[0039] In this way, by performing a formed shape simulation based on the quality record data, it is possible to avoid construction problems caused by formed shape errors in advance. Also, since the quality of the newly installed floor slab can be grasped in advance, the designer can provide quality improvement guidance, etc. to the manufacturer.

[0040] (Construction process) The construction process (step S105) is a process in which the constructor actually installs the newly installed floor slabs in order. The constructor uses a lifting device such as a crane to lift the newly installed floor slabs and installs each newly installed floor slab at its respective installation position in order. The constructor installs the newly installed floor slab while checking the position of the newly installed floor slab being lifted using the construction support system 40. Note that the constructor refers to a person involved in the installation work of the newly installed floor slab.

[0041] As shown in FIG. 12, the construction support system 40 includes a construction support device 41 and a camera 42. The construction support device 41 and the camera 42 are configured to be able to communicate with each other. The construction support device 41 is preferably a portable device that the constructor can carry, and preferably includes at least a display device H13 that the constructor can carry.

[0042] In the construction work, the constructor installs the imaging device 42 so that the installation position of the new floor slab 55 is included in the imaging range. After installing the imaging device 42, the constructor inputs the imaging coordinates indicating the position of the imaging device 42 into the construction support device 41. Also, the constructor inputs the identification information of the new floor slab 55 to be installed into the construction support device 41 based on the design data.

[0043] After the constructor who has input the imaging coordinates and the identification information starts imaging with the imaging device 42 when the new floor slab 55 being lifted is carried to the vicinity of the installation position. The imaging device 42 transmits the captured image data to the construction support device 41 at any time.

[0044] The construction support device 41 obtains the relative coordinates of the new floor slab 55 with respect to the imaging device 42 based on the reference mark 60 of the new floor slab 55 included in the image data by performing image processing on the image data transmitted by the imaging device 42. Then, after the construction support device 41 obtains the current position coordinates of the new floor slab 55 based on the relative coordinates and the imaging coordinates, it displays an image including the design coordinates and the current position coordinates on the display device H13. The display device H13 in FIG. 12 shows an example of the display of an image including the design coordinates and the current position coordinates. The construction support device 41 displays an image indicating the current position coordinates in a horizontal coordinate system centered on the design coordinates. The constructor adjusts the position of the new floor slab 55 based on such an image and installs the new floor slab 55.

[0045] After the installation of the new floor slab 55, when the constructor inputs the installation completion, the construction support device 41 transmits the installation coordinates indicating the position where the new floor slab 55 was actually installed to the design support system 20. The design support device 21 stores the installation coordinates of the new floor slab 55 as installation coordinate data in the server 100.

[0046] When the installation coordinate data is stored, the design support device 21 performs a construction-time correction simulation to correct the design coordinates of the new floor slab 55 to be installed in the future based on the installation coordinate data and the design data. The constructor installs the new floor slab 55 in the future based on the corrected design coordinates. In this way, the new floor slabs 55 are installed in order.

[0047] When all the newly installed floor slabs 55 are installed and the designer completes the input, construction data is created by adding quality record data, installation coordinate data, etc. of each newly installed floor slab 55 to the design data. The construction data is submitted to the project client at the completion of the project and utilized for the maintenance management of the bridge.

[0048] The operation and effects of this embodiment will be described. (1) According to the above embodiment, CIM data capable of reproducing the existing bridge 50 is created based on the road point cloud data acquired using the unmanned aircraft 22 and the under-road point cloud data acquired using the mobile robot 25. As a result, the survey of the existing bridge 50 can be carried out without restricting the road leading to the existing bridge 50, so the construction period of the renewal work can be shortened.

[0049] (2) According to the above embodiment, the newly installed floor slab 55 is assigned to the existing girder 51 by the allocation simulation based on the CIM data. As a result, the time required for the design of the newly installed floor slab 55 is shortened, so the construction period of the renewal work can be shortened.

[0050] (3) According to the above embodiment, the designer can grasp in advance the dimensional error of the as-built shape of the newly installed floor slab 55 manufactured by the manufacturer. As a result, it is less likely that problems caused by the dimensional error will occur during actual construction, so the construction period of the renewal work can be shortened.

[0051] (4) Further, since the dimensional error of the newly installed floor slab 55 is displayed in a heat map on the design support device 21, the designer can easily grasp the singular points of each newly installed floor slab 55. As a result, the time for considering countermeasures against the dimensional error can be shortened.

[0052] (5) In the above embodiment, based on the CIM data and the measured data, a deformation simulation for installing the new floor slab 55 on the existing girder 51 is performed. As a result, it is possible to confirm with a high degree of reliability the interference with roadside objects, the cumulative error during installation, the correlation error with adjacent members, the interference with adjacent structures, etc. Also, for the new floor slab 55 that is difficult to install, it can be remade before construction. As a result, it becomes less likely that problems will occur due to deformation errors during actual construction.

[0053] (6) In the above embodiment, the new floor slab 55 is installed based on the design coordinates and the current position coordinates displayed on the display device H13 of the construction support system 40. As a result, the time required for installing the new floor slab 55 is shortened, and the new floor slab 55 can be installed with high positional accuracy. Also, since there is no need for the construction worker to approach the new floor slab 55 during lifting for position measurement etc., the safety of the construction worker can be ensured.

[0054] (7) According to the above embodiment, based on the installation coordinates of the installed new floor slab 55, coordinate management of the design coordinates of the new floor slab 55 to be installed next can be performed. As a result, it becomes even less likely that problems will occur during actual construction.

[0055] This embodiment can be implemented with the following modifications. This embodiment and the following modification examples can be implemented in combination with each other within a technically non - conflicting range. · In the above embodiment, the bridge renewal method and support system were described using the renewal of the floor slab. However, it is not limited to this. The bridge renewal method and support system may be applied to renewal target members to be renewed, such as wall high fences installed along the edge of the floor slab.

[0056] · In the above embodiment, the adjustment of the installation position of the new floor slab 55 is not limited to the method using the camera 42. For example, it may be performed based on visual inspection by the construction worker. ·In the above-described embodiment, after performing the as-built simulation, the new floor slab 55 was installed. However, the new floor slab 55 may be installed without performing the as-built simulation.

[0057] ·In the above-described embodiment, based on the measured data, the new floor slab 55 was displayed in a heat map. However, the measured data only needs to be able to grasp the shape of the new floor slab 55, and it is not necessarily required to be displayed in a heat map.

[0058] ·In the above-described embodiment, the road point cloud data was acquired using the road camera 23 mounted on the unmanned aerial vehicle 22. However, the road point cloud data may be acquired, for example, using a camera installed near the existing bridge 50 and capable of imaging the road of the existing bridge 50. Also, the road point cloud data may be acquired using a laser measuring device mounted on the unmanned aerial vehicle 22, or may be acquired using a laser measuring device installed near the existing bridge 50. Furthermore, the road point cloud data may be acquired based on the imaging result by the camera and the measurement result by the laser measuring device.

[0059] ·In the above-described embodiment, the under-road point cloud data was acquired using the under-road camera 26 mounted on the mobile robot 25. However, the under-road point cloud data may be acquired, for example, using a camera mounted on an unmanned aerial vehicle. Also, the under-road point cloud data may be acquired using a laser measuring device mounted on an unmanned aerial vehicle, or may be acquired using a laser measuring device installed near the existing bridge 50. Furthermore, the under-road point cloud data may be acquired based on the imaging result by the camera and the measurement result by the laser measuring device.

[0060] ·In the above-described embodiment, for the renewal work, a construction simulation using the CIM data and the design data may be performed. The construction simulation visualizes the construction procedure of the renewal work in a 3D model by giving a time axis to the 3D model. The construction simulation is used, for example, when the designer determines the construction plan.

[0061] Various processes related to the construction simulation are performed on the server 100. The server 100 executes various processes related to the construction simulation when a predetermined operation is performed on the design support device 21 being accessed. In this process, the server 100 provides an input screen for inputting various information including the start of the construction simulation to the design support device 21 being accessed.

[0062] As shown in FIG. 13, as processes related to the construction simulation, the server 100 executes a rule registration process (step S401), a model data input process (step S402), a construction step data creation process (step S403), and a playback process (step S404).

[0063] The rule registration process (step S401) is a process for registering construction procedure rules. The construction procedure rules are registered by the designer. The server 100 provides a rule registration screen for registering the construction procedure rules to the design support device 21 when a predetermined operation is performed on the design support device 21 accessing the server 100. The designer inputs the construction procedure rules into the rule registration screen using the design support device 21.

[0064] As the construction procedure rules, the designer inputs rules related to the construction cycle. The rules related to the construction cycle define, as one cycle of construction, the removal of the existing floor slab and the installation of the new floor slab 55, including the number of existing floor slabs removed and the removal work period in one cycle, and the number of new floor slabs 55 installed and the installation work period. Also, for example, the designer inputs the start date and time, start direction, etc. as the construction procedure rules.

[0065] Note that it is preferable for the server 100 to save the input construction procedure rules in a readable manner. Thereby, the designer can create new construction procedure rules by changing a part of the construction procedure rules based on similar renovation works.

[0066] The model data input process (step S402) is a process executed when CIM data or design data is uploaded from the design support device 21 to the server 100. When a predetermined operation is performed on the design support device 21 accessing the server 100, the server 100 provides a data input screen to the design support device 21. The designer uploads CIM data and design data to the server 100 using the data input screen accessed on the design support device 21. The server 100 stores the uploaded various data in a predetermined recording area.

[0067] The construction step data creation process (step S403) is a process of creating construction step data based on the construction procedure rules, CIM data, and design data. In the construction step data creation process, the server 100 creates, as construction step data, data in which identification information, start date and time, end date and time, etc. are defined for each 3D model to be constructed based on the construction procedure rules, CIM data, and design data.

[0068] The playback process (step S404) is a process of playing back the construction procedure in a 3D model based on the CIM data, design data, and construction step data. The server 100 executes the playback process when a playback operation is performed on the design support device 21 accessing the server 100.

[0069] In the playback process, the server 100 displays or hides the 3D model shown by the CIM data and design data based on the construction step data. For example, in the playback process, as shown in FIG. 14(a), the server 100 hides the existing floor slab 65, and then, as shown in FIG. 14(b), displays the new floor slab 55 in the space vacated by the hiding of the existing floor slab 65. Thereafter, the server 100 hides the existing floor slab 65 adjacent to the new floor slab 55, as shown in FIG. 14(c).

[0070] In this way, in the playback process, the construction procedure of the renewal work is visualized by a 3D model by making the existing floor slab 65 invisible or displaying the newly installed floor slab 55 according to the passage of time. In the playback process, a 3D model of the hoisting device used for removing the existing floor slab 65 and installing the newly installed floor slab 55 may be displayed. The designer determines the construction plan based on the results of such construction simulations.

[0071] Note that the construction simulation is preferably executable by an information processing device accessible to the server 100, such as the production support device 31 and the construction support device 41. According to such a configuration, the designer can use his or her own information processing device when explaining the construction plan proposal to the construction client.

Explanation of Reference Numerals

[0072] 10… Support system, 20… Design support system, 21… Design support device, 22… Unmanned aerial vehicle, 23… Roadside camera, 25… Mobile robot, 26… Under-road camera, 27… Moving machine, 28… Erection member, 29… Roller, 30… Production support system, 31… Production support device, 32… Camera, 33… Measuring instrument, 40… Construction support system, 41… Construction support device, 42… Camera, 50… Existing bridge, 51… Existing girder, 52… Lower flange, 53… Web, 55… Newly installed floor slab, 56… Adjacent plate, 57… Fastening hardware, 58… Hunch part, 60… Reference mark, 65… Existing floor slab, 100… Server.

Claims

1. A bridge renewal method for renovating a bridge having a plurality of decks arranged in parallel in the bridge axis direction, comprising the steps of: The support system for supporting the renewal of the bridge comprises: Acquire road point cloud data of an existing bridge and road point cloud data of the existing bridge, A 3D model of the existing bridge is created by combining the road point cloud data and the under-road point cloud data; A layout of the new deck is performed by a layout simulation based on the 3D model of the existing bridge and the layout rules, and design data for the new deck is created. Bridge renewal methods.

2. Before a new deck manufactured based on the design data is delivered to a construction site, the support system obtains actual measurement data obtained by three-dimensionally measuring the manufactured new deck. The bridge renewal method according to claim 1.

3. The support system displays a heat map of the newly constructed deck based on the actual measurement data. The bridge renewal method according to claim 2.

4. The support system performs a simulation of the installation of the newly manufactured deck on the existing girder based on the 3D model of the existing bridge and the actual measurement data. The bridge renewal method according to claim 2.

5. The new deck is provided with a plurality of reference marks, The design data includes design coordinates indicating the installation position of the new deck, The support system comprises: Acquire installation coordinates of the newly installed deck based on image data obtained by capturing an image of the plurality of reference marks provided on the newly installed deck that has actually been installed on the existing girder; Based on the installation coordinates, a correction simulation is performed to correct the design coordinates of the subsequent new deck. A bridge renewal method according to any one of claims 1 to 4.

6. The design data includes a 3D model of the new deck, The support system performs a construction simulation for replacing the deck using the 3D model of the existing bridge and the 3D model of the new deck. The bridge renewal method according to claim 1.

7. A support system for supporting the renewal of a bridge in which multiple decks are installed side by side in the bridge axis direction, Acquire road point cloud data of an existing bridge and road point cloud data of the existing bridge, A 3D model of the existing bridge is created by combining the road point cloud data and the under-road point cloud data; A layout of the new deck is performed by a layout simulation based on the 3D model of the existing bridge and the layout rules, and design data for the new deck is created. Support system.

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