Slab replacement construction support device

Abstract

To provide a support device for slab replacement construction which can display estimated deflection amounts of a bridge according to construction positions.SOLUTION: A support device for slab replacement construction is a support device for removing existing slabs of a bridge with a crane and installing new slabs to the bridge. The support device comprises a calculation part to create multiple images relevant to the bridge, a display part to display multiple images, and an operation part. The multiple images include a first image 30 showing states of the slab replacement construction and a second image 40 showing estimated deflection amounts. The first image 30 consists of a combination of slab images 34, 36 and a crane image 32. The calculation part calculates, depending on positions of the crane image 32, displacements of girders as estimated deflection amounts. The second image 40 is arranged either above or below the first image. The second image 40 includes a graph 42 with the estimated deflection amounts as the ordinate.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a support device for deck replacement work. [Background technology]

[0002] Conventionally, "deck replacement work" has been carried out in various places, in which concrete decks of road bridges are removed and erected during highway renewal work, etc. In such bridge deck replacement work, concrete precast decks manufactured in factories or on-site yards are used in order to shorten the construction period (for example, Patent Document 1).

[0003] In deck replacement work, the construction crane is installed on the deck of the bridge girder, so the girder that receives the load of the crane experiences different displacements at each span. Even for the same span, the deflection and warping of the girder changes depending on where the crane is installed. Therefore, when measuring the completed form, the construction height of the new deck is managed taking into account the displacement calculated in advance by frame analysis, etc. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-31902 Summary of the Invention [Problem to be solved by the invention]

[0005] However, displacement analyses such as frame analysis require a lot of time before the results can be calculated.In addition, construction management is generally carried out using analysis results such as frame analysis before construction that are printed on paper, so the analysis results do not match the actual progress of construction.

[0006] Therefore, the present invention provides a support device for deck replacement work that can display the estimated deflection amount of a bridge according to the construction situation. [Means for solving the problem]

[0007] The present invention has been made to solve at least some of the above-mentioned problems, and can be realized in the following aspects or application examples.

[0008] [1] One aspect of the support device for deck replacement work according to the present invention is, A support device for deck replacement work in which an existing deck of a bridge is removed by a crane and a new deck is installed on the bridge, A calculation unit that generates a plurality of images relating to the bridge; A display unit that displays the plurality of images; an operation unit that receives an input operation for the support device; Equipped with The plurality of images are A first image showing a state of the deck replacement work; A second image showing an estimated deflection of the bridge; Including, The first image is configured by combining a floor slab image representing a floor slab arranged along a first direction on the display unit and a crane image representing the crane, The first direction corresponds to a longitudinal direction of the bridge, The calculation unit calculates the girder of the bridge according to a position of the crane image in the first direction. Calculating the displacement as the estimated deflection amount; The second image is arranged above or below the first image, and includes a graph with the first direction on the horizontal axis and the estimated amount of deflection on the vertical axis.

[0009] [2] In one aspect of the above-mentioned support device for deck replacement work, The deck image includes an existing deck image representing the existing deck and a new deck image representing the new deck, The operation unit is configured to be able to change a first length over which the existing deck image continues in the first direction and a second length over which the new deck image continues in the first direction, The calculation unit can calculate the estimated deflection amount by converting it into a change in the load of the existing deck and / or the new deck acting on the girder depending on the first length and / or the second length.

[0010] [3] In one aspect of the above-mentioned deck replacement work support device, The first image further includes a plurality of girder images representing a plurality of the girders arranged at intervals in a width direction of the bridge, The calculation unit calculates the displacement of each of the plurality of beams as an estimated deflection amount, The second image may include one or more graphs representing the estimated amount of deflection of one or more of the beam images selected by the operation unit.

[0011] [4] In one aspect of the above-mentioned support device for deck replacement work, The plurality of images may further include a third image that displays, as a numerical value, the estimated amount of deflection at a predetermined position in the first direction selected by the operation unit. Effect of the Invention

[0012] The deck replacement work support device of the present invention can display the estimated amount of bridge deflection according to the position of the crane in line with the construction situation, so that even workers who are unfamiliar with using frame analysis can install the new deck at the appropriate height. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a block diagram showing a schematic diagram of a support device for deck replacement work according to an embodiment of the present invention. [Diagram 2] 13 is an example of an image displayed on a display unit of the support device. [Diagram 3] 13 is an example of an image displayed on a display unit of the support device. [Figure 4] 13 is an example of an image displayed on a display unit of the support device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Preferred embodiments of the present invention will be described in detail below with reference to the drawings. Note that the embodiments described below do not unduly limit the contents of the present invention described in the claims. In addition, not all of the configurations described below are necessarily essential components of the present invention.

[0015] 1. Overview of the support device A support device 20 for deck slab replacement work according to this embodiment will be described with reference to Fig. 1. Fig. 1 is a block diagram that shows a schematic diagram of a support device 20 for deck slab replacement work according to this embodiment.

[0016] The deck replacement work support device 20 shown in FIG. 1 is a device that supports work to remove an existing deck of a bridge by a crane and install a new deck on the bridge.

[0017] The support device 20 includes a calculation unit 26 that generates a plurality of images relating to a bridge, and a display unit that displays the plurality of images. The support device 20 includes a display unit 22 that displays a display image on the display screen, and an operation unit 24 that accepts input operations for the support device 20. The support device 20 may further include a storage unit 28 that stores programs and the like. The display unit 22, operation unit 24, calculation unit 26, and storage unit 28 are electrically connected to one another. The calculation unit 26 is a CPU (Central Processing Unit) and can execute the programs stored in the storage unit 28.

[0018] The support device 20 is preferably a terminal that can be carried to a construction site, such as a portable terminal such as a notebook computer, a tablet computer, or a smartphone. The display unit 22 can be a display of the terminal. An external server other than the terminal may have some or all of the functions of the support device 20, such as the calculation unit 26. In this case, the support device 20 is preferably connected to the external server via a wireless line to share information with the external server. The display unit 22 is, for example, a liquid crystal screen (LCD (Liquid Crystal Display)), or may be another known display device (for example, organic EL (Electro Luminescence), etc.). The display unit 22 can display various user interfaces (GUI (Graphical User Interface)) for the operator. The operation unit 24 can be, for example, a touch panel type that is provided integrally with the display unit 22.

[0019] The calculation unit 26 calculates the estimated deflection of the bridge according to the positions at which the cranes that will hoist the existing and new decks on the bridge to be constructed are installed. The estimated deflection is calculated using a calculation formula previously stored in the memory unit 28. When calculating the estimated deflection, the calculation unit 26 can take into account the positions and loads of the existing and new decks. When calculating the estimated deflection, the position at which the crane will be installed and the position of the decks can be set by the operator through input operations using the operation unit 24. In addition, it is preferable that construction information such as the size and weight of the crane and decks be stored in the memory unit 28 in advance before construction.

[0020] The calculation unit 26 can correct the calculation formula during construction so that the difference between the estimated height of the new deck 16 using the calculated estimated deflection amount and the actual height of the new deck in the actual bridge becomes small. By using the corrected calculation formula, the estimated deflection amount when installing the crane at the next construction position becomes more accurate.

[0021] The calculation unit 26 can generate a plurality of images to be displayed on the display unit 22. The calculation unit 26 can also output a command to display the generated plurality of images or the plurality of images stored in advance in the storage unit 28 at predetermined positions on the display unit 22.

[0022] The display unit 22 can display a plurality of images at predetermined positions in accordance with instructions from the calculation unit 26. At least a part of the plurality of images displayed on the display unit 22 can be a GUI for operation by the operation unit 24.

[0023] The operation unit 24 can perform input operations on the GUI displayed on the display unit 22. The operation unit 24 can, for example, move the GUI within the display unit 22. The operator may display and operate a screen keyboard such as a numeric keypad on the display unit 22, or may connect an external input device to the support device 20 and operate it.

[0024] 2. Image displayed on the display A plurality of images displayed on the display unit 22 will be described with reference to Fig. 2 to Fig. 4. Fig. 2 to Fig. 4 are examples of images displayed on the display unit 22 of the support device 20.

[0025] As shown in FIGS. 2 to 4, the multiple images displayed on the display unit 22 include a first image 30 showing the state of the deck replacement work and a second image 40 showing the estimated deflection amount of the bridge. The multiple images displayed in the display unit 22 may further include a third image 50 that displays, as a numerical value, an estimated amount of deflection at a predetermined position in the first direction X selected by the operation unit 24.

[0026] For the operator's understanding, it is preferable that the first image 30 is an image that imitates a bridge. The first image 30 is composed of a combination of deck images 34, 36 that represent decks arranged along the first direction X on the display unit 22, and a crane image 32 that represents a crane. FIG. 2 shows the state before construction, and all of the deck images are existing deck images 34. The crane image 32 is located at the right end, which is the construction start position of the bridge. FIG. 3 and FIG. 4 show the state during construction, for example, a state in which multiple new decks made of precast concrete are installed. The dashed line of the new deck image 36 is an image of one new deck made of precast concrete. In particular, FIG. 4 shows the state after a part of the existing deck is removed, with a gap between the existing deck image 34 and the new deck image 36. In FIG. 4, a girder image 38 is displayed in the part where the existing deck image 34 has been removed, and the next new deck image 36 is installed in this gap. In Figs. 2 to 4, the first image 30 is a schematic perspective view of a bridge, but is not limited thereto, and may be, for example, a plan view or a side view, or may be composed of both views.

[0027] The first image 30 may further include a plurality of girder images 38 representing a plurality of girders arranged at intervals in the width direction of the bridge. The plurality of girder images 38 extend in a first direction X and are arranged at intervals in a second direction Y perpendicular to the first direction X. Here, the first direction X corresponds to the longitudinal direction of the bridge, and the second direction Y corresponds to the width direction of the bridge. It is preferable to display the first direction X and the longitudinal direction of the bridge at a predetermined scale. Therefore, when the position of the crane image 32 in the first direction X is changed, it is converted into the position of the crane in the longitudinal direction of the actual bridge. In Figs. 2 to 4, the left-right direction of the display unit 22 is the first direction X. A1, P1 to P4 in Figs. 2 to 4 are positions where the girders are supported, and correspond to the positions of the bridge piers. The longitudinal direction is a straight line in the case of a straight bridge, but is the direction in which the main girders extend along the curve of the bridge in the case of an actual curved bridge. Even if the actual bridge is a curved bridge, the girder image 38 and the first direction X in the first image 30 may be represented as straight lines, or the girder image 38 and the first direction X may be represented as curved lines in accordance with the actual bridge.

[0028] The operation unit 24 is configured to be able to change the position of the crane image 32 in the first direction X, for example. The position of the crane image 32 can be changed, for example, by the operator selecting the crane image 32 generated as a GUI using the operation unit 24 and moving it to an arbitrary position in the first direction or a preset position. In addition, for example, the position of the crane image 32 may be changed by inputting the distance from the girder tip in the direction in which the construction progresses as a numerical value into the fourth image 60. In this case, the crane image 32 displayed on the display unit 22 moves on the deck slabs 34, 36 according to the input distance. The calculation unit 26 calculates the displacement of the bridge girder as an estimated deflection amount according to the position of the crane image 32 in the first direction X. Since the position of the load acting on the girder changes according to the position of the crane, the operator can obtain a more accurate value by calculating the estimated deflection amount according to the construction situation.

[0029] The deck images 34, 36 may include an existing deck image 34 representing an existing deck and a new deck image 36 representing a new deck. The operation unit 24 is configured to be able to change, for example, a first length L1 over which the existing deck images 34 continue in the first direction X and a second length L2 over which the new deck images 36 continue. The length can be changed, for example, by selecting a part of the existing deck image 34 and the new deck image 36 generated as a GUI by the operation unit 24 and deleting or adding the part. Also, for example, the length may be changed by inputting, for example, a distance from the girder end (the left end of the figure) as a numerical value in the fourth image 60. In this case, the length of the existing deck image 34 and the new deck image 36 is changed according to the input distance. The length of the existing deck image 34 and the new deck image 36 may be changed by the calculation unit 26 increasing or decreasing the number of deck images divided into a plurality of parts in the first direction X according to the actual construction site, or by inputting images of different lengths. may be substituted. The calculation unit 26 can calculate the estimated deflection amount after converting it into a change in the load of the existing deck slab and / or the new deck slab acting on the girder according to the first length L1 and / or the second length L2. Since the load acting on the girder changes according to the length of the deck slab, the operator can obtain a more accurate value by calculating the estimated deflection amount in this manner. Note that, although the first image 30 has been described as an example in which construction is carried out from the right end to the left end, construction may also be carried out from the left end to the right end.

[0030] The calculation unit 26 can calculate the displacement of each of multiple girders as the estimated deflection amount. For example, a crane has outriggers installed near both ends of a bridge in the width direction, so the load tends to concentrate on the girders near both ends in the width direction. Therefore, when there are multiple girders, the operator can obtain a more accurate value by calculating the estimated deflection amount for each girder.

[0031] The second image 40 represents the estimated deflection of the bridge calculated by the calculation unit 26. The second image 40 is arranged above or below the first image 30. By arranging the second image 40 above or below the first image 30, the operator can easily compare the position of the crane and the estimated deflection, and can easily recognize the relationship between them. The second image 40 includes a graph 42 with the first direction X as the horizontal axis and the estimated deflection as the vertical axis. When the first image 30 and the second image 40 are arranged side by side at the top and bottom of the display unit 22 with the girder lengths aligned in the first direction X, the operator can easily relatively grasp the relationship between the crane and the estimated deflection.

[0032] The second image 40 can include one or more graphs 42 that represent the estimated deflection of one or more girder images 38 selected by the operation unit 24. The check boxes displayed on the right side of the second image 40 can select girder G1 to G4 corresponding to the four girder images 38 of the first image 30. In Figs. 2 to 4, girder G1 is selected by the check box of the second image 40, and the estimated deflection of girder G1 is displayed as a graph 42. When all the check boxes of the second image 40 are selected, four graphs 42 are displayed on the display unit 22. Since the estimated deflection can be displayed for each girder, the difference in the deflection in the width direction of the bridge can be grasped when installing a new deck. This allows the operator to more accurately construct the height of the new deck. Note that, in this embodiment, four girder images 38 are illustrated as an example, but this is not limited thereto, and the number of girder images 38 can be displayed according to the actual main girders. In addition, in this embodiment, an example in which the crane image 32 is installed at the center of the bridge in the width direction has been described, but this is not limited thereto, and the crane image 32 may be installed at a position other than the center. For example, in the case of a bridge with many lanes, the actual crane may be moved not only in the longitudinal direction but also in the transverse direction. In that case, the position of the crane image 32 in the first image 30 may be moved in the second direction Y, and the calculation unit 26 may calculate the estimated deflection amount taking into account the change in the load of the crane borne by each girder.

[0033] The estimated deflection amount may be displayed not only as a graph 42 showing the displacement of the girder top surface along the first direction X, but also as a numerical value. The operator can set the height of the new deck slab according to that numerical value. For example, the numerical value of the estimated deflection amount at the position in the first direction X indicated by the finger marks 44, 45 in the second image 40 may be displayed in a frame separate from the second image 40, as in the third image 50. The third image 50 is displayed next to the second image 40. The frame of the third image 50 can display the displacement of each of the girders G1 to G4 and the average value of those displacements.

[0034] 2 to 4, for example, a table showing the estimated deflection amount at the center in the intervals between the bearings A1, P1 to P4 as a numerical value may be displayed below the second image 40. Also, for example, check boxes related to the pavement load may be provided, and a field for inputting a correction coefficient for the estimated deflection amount may be provided.

[0035] 3.Support method A worker at the construction site of the bridge deck replacement work will be the operator of the support device 20. Prior to the removal of the existing deck, the crane image 32 in the first image 30 displayed on the display unit 22 is moved to the right edge as shown in Fig. 2 according to the position of the crane. Here, it is assumed that the replacement work will proceed from the right side to the left side. In the second image 40, the estimated deflection amount is calculated by the calculation unit 26 according to the position of the crane image 32 and is displayed on the display unit 22 as a graph 42.

[0036] Next, the operator specifies a portion of the existing deck image 34 that corresponds to the existing deck to be removed and removes it from the first image 30. For example, the state after removal is shown in Fig. 4. The calculation unit 26 of the support device 20 recalculates the estimated deflection amount in accordance with the reduction in the load of the removed existing deck, and updates the graph 42 of the second image 40.

[0037] Next, the operator places the new deck image 36 in the first image 30 according to the new deck to be installed. The calculation unit 26 recalculates the estimated deflection according to the increase in the load of the new deck to be installed, and updates the graph 42 in the second image 40. Since the graph 42 shows the displacement of the girder after the new deck is installed, the operator adjusts the height of the new deck according to this displacement, and then installs the new deck on the girder. The operator then repeats these operations.

[0038] In this way, the operator can adjust the height of the newly constructed deck during actual construction while visually recognizing the crane position and deck length according to the construction situation, thereby shortening the work time required for height adjustment.

[0039] The present invention is not limited to the above-described embodiments, and various modifications are possible. For example, the present invention includes configurations that are substantially the same as those described in the embodiments (for example, configurations with the same functions, methods, and results, or configurations with the same purpose and effect). The present invention also includes configurations in which non-essential parts of the configurations described in the embodiments are replaced. The present invention also includes configurations that achieve the same effects as the configurations described in the embodiments, or configurations that can achieve the same purpose. The present invention also includes configurations in which publicly known technology is added to the configurations described in the embodiments. [Explanation of symbols]

[0040] 20...Support device, 22...Display unit, 24...Operation unit, 26...Calculation unit, 28...Memory unit, 30...First image, 32...Crane image, 34...Existing deck image, 36...New deck image, 38...Girder image, 40...Second image, 42...Graph, 44, 45...Finger mark, 50...Third image, 60...Fourth image, L1...First length, L2...Second length, X...First direction, Y...Second direction

Claims

1. A support device for deck replacement work in which an existing deck of a bridge is removed by a crane and a new deck is installed on the bridge, A calculation unit that generates a plurality of images relating to the bridge; A display unit that displays the plurality of images; an operation unit that receives an input operation for the support device; Equipped with The plurality of images are A first image showing a state of the deck replacement work; A second image showing an estimated deflection of the bridge; Including, The first image is configured by combining a floor slab image representing a floor slab arranged along a first direction on the display unit and a crane image representing the crane, The first direction corresponds to a longitudinal direction of the bridge, The calculation unit calculates a displacement of a girder of the bridge as the estimated deflection amount according to a position of the crane image in the first direction, The second image is arranged above or below the first image, and includes a graph with the first direction on the horizontal axis and the estimated deflection amount on the vertical axis.

2. In the support device for deck replacement work according to claim 1, The deck image includes an existing deck image representing the existing deck and a new deck image representing the new deck, The operation unit is configured to be able to change a first length over which the existing floor slab image continues in the first direction and a second length over which the new floor slab image continues in the first direction, The calculation unit converts the estimated deflection amount into a change in the load of the existing deck and / or the new deck acting on the girder depending on the first length and / or the second length, and then calculates the estimated deflection amount.

3. In the support device for deck replacement work according to claim 1 or 2, The first image further includes a plurality of girder images representing a plurality of the girders arranged at intervals in a width direction of the bridge, The calculation unit calculates the displacement of each of the plurality of beams as an estimated deflection amount, A support device for deck replacement work, wherein the second image includes one or more graphs representing the estimated deflection amount of one or more of the girder images selected by the operation unit.

4. In the support device for deck replacement work according to claim 1 or 2, The plurality of images further includes a third image that displays, as a numerical value, the estimated deflection amount at a specified position in the first direction selected by the operation unit.

Images