3D retaining wall calculation device and 3D retaining wall calculation program

Abstract

To allow precise calculation of an end position and a shape change point of a retaining wall in three dimensions.SOLUTION: A three-dimensional calculation device 1 for a retaining wall includes: an input unit 10b that receives an input of an attribute of the retaining wall; a calculation unit 10c that executes intersection calculation of a retaining wall surface based on the attribute input to the input unit 10b, and a terrain surface included in a three-dimensional road model; a placement unit 10a that places a cut slope in a maximum height section of the retaining wall obtained by the intersection calculation by the calculation unit 10c; and a model generator 10d that executes intersection calculation of a cut surface of the cut slope placed by the placement unit 10a and the terrain surface included in the three-dimensional road model to generate a three-dimensional plane model including the cut slope and the retaining wall.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a three-dimensional calculation device for a retaining wall and a three-dimensional calculation program for a retaining wall used, for example, in road design. [Background technology]

[0002] In recent years, 3D CAD systems have been introduced in various fields for design work. 3D CAD systems have also been introduced in the field of road design. For example, Patent Document 1 discloses an automatic retaining wall placement device for automatically placing a retaining wall model on a 3D road model, and Patent Document 2 discloses a retaining wall stability inspection device that executes processing for inspecting the stability of a retaining wall on a 3D road model.

[0003] The automatic placement device of Patent Document 1 is configured to identify the placement section of the retaining wall based on the distance between the center line and the slope on a three-dimensional road model, set a reference line for placing the retaining wall for the identified placement section, place the candidate retaining wall shape in line with the reference line, and then automatically adjust the retaining wall height.

[0004] The stability inspection device of Patent Document 2 is configured to accept the selection of a retaining wall to be subject to stability inspection on a three-dimensional road model, then execute a stability inspection process for the target retaining wall, and change the color of the retaining wall on the three-dimensional road model based on the results of the stability inspection. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6848038 [Patent Document 2] Patent No. 6848031 Summary of the Invention [Problem to be solved by the invention]

[0006] By the way, when calculating a retaining wall in a conventional 2D road design, the end position and height of the retaining wall are calculated from 2D planes and cross sections based on information such as the road center alignment, longitudinal gradient, transverse gradient, road shoulder height calculated from width configuration, ground level, etc. Therefore, it is difficult to accurately calculate the end position and height of the retaining wall due to inconsistencies, and there are also errors in the design drawings.

[0007] In recent 3D modeling of road design, existing technology of 2D drawings are directly converted into 3D models, so there are many inconsistencies. In other words, it is common in the civil engineering industry to create 2D cross sections at a specified pitch (for example, 5m pitch or 1m pitch) and connect each created cross section to create a 3D model, but since the cross sections created are for each specified pitch, cross sections between the specified pitches are not generated. Similarly, 3D models of retaining walls are made 3D by connecting each retaining wall cross section created at a specified pitch, so retaining wall cross sections between the specified pitches are not generated. Therefore, it is not possible to find the shape change points of the retaining wall between the specified pitches, and if the end of the retaining wall is located outside the specified pitch, the position of the end of the retaining wall cannot be found, which is an issue in that it is not a valid 3D product.

[0008] In particular, since the main material of retaining walls is concrete, which is expensive to construct, it is necessary to accurately calculate the quantity of concrete and other materials at the design stage. One method for doing this is to create a retaining wall development plan, but when creating a retaining wall development plan, it is necessary to calculate the end positions, shape change points, and height more accurately than for slopes, flat banks, and other earthwork parts. Therefore, a device that can perform precise 3D calculations of retaining walls is required, but currently, as described above, the accuracy is poor because the retaining wall cross sections generated at the specified pitch are simply connected.

[0009] The present disclosure has been made in consideration of these points, and has as its object to enable precise calculation of the end positions and shape change points of a retaining wall in three dimensions. [Means for solving the problem]

[0010] In order to achieve the above object, one aspect of the present disclosure can be premised on a three-dimensional calculation device for a retaining wall that automatically calculates a retaining wall on a three-dimensional road model. The three-dimensional calculation device for a retaining wall includes an input unit that accepts input of attributes of the retaining wall, a calculation unit that executes intersection calculation between a retaining wall surface based on the attributes input by the input unit and a terrain surface of the three-dimensional road model, an installation unit that installs a cut slope in a retaining wall maximum height section obtained by the intersection calculation by the calculation unit, and an intersection calculation between the cut surface of the cut slope installed by the installation unit and the terrain surface of the three-dimensional road model, and calculates a three-dimensional model including the slope and the retaining wall. road and a model generating unit for generating a model.

[0011] In other words, when the maximum retaining wall height section is obtained by the intersection calculation between the retaining wall surface and the terrain surface, a cut slope is installed in the maximum retaining wall height section. By performing an intersection calculation between the cut surface of the cut slope and the terrain surface of the 3D road model, the shape of the part where the retaining wall will be installed can be obtained precisely and continuously in 3D.

[0012] The installation unit can also determine whether or not the maximum retaining wall height section has been obtained by the intersection calculation by the calculation unit. If it is determined that the maximum retaining wall height section has been obtained, a cut slope can be installed in the maximum retaining wall height section. On the other hand, if it is not determined that the maximum retaining wall height section has been obtained, the cut slope can be prevented from being installed in the maximum retaining wall height section.

[0013] A three-dimensional calculation device for a retaining wall according to another aspect of the present disclosure includes an input unit that accepts input of attributes of the retaining wall, a calculation unit that, when the input unit accepts the input of the attributes of the retaining wall, determines an end section of a slope by intersection calculation, an installation unit that installs a retaining wall surface based on the attributes input by the input unit within the end section of the slope determined by the calculation unit, and a calculation unit that executes an intersection calculation between the retaining wall surface installed by the installation unit and a terrain surface of the three-dimensional road model within the end section of the slope, thereby generating a three-dimensional map including the slope and the retaining wall. roadand a model generating unit for generating a model.

[0014] According to this configuration, by performing intersection calculations between the retaining wall surface based on the attributes input by the input unit and the terrain surface of the three-dimensional road model, the shape of the area where the retaining wall will be installed can be obtained precisely and continuously in three dimensions.

[0015] The input unit can also receive at least an input of the top width of the retaining wall as an attribute of the retaining wall. When the input unit receives the input of the top width of the retaining wall, the calculation unit can determine the end section of the slope by intersection calculation.

[0016] A three-dimensional calculation device for a retaining wall according to another aspect of the present disclosure includes an input unit that accepts an input of attributes of the retaining wall, a polyline generation unit that, when the input unit accepts the input of the attributes of the retaining wall, calculates planar coordinates and heights of a terrain surface of the three-dimensional road model and generates a three-dimensional polyline, an installation unit that installs a retaining wall surface based on the three-dimensional polyline generated by the polyline generation unit, and a construction unit that performs intersection calculation between a slope and the retaining wall surface installed by the installation unit and generates a three-dimensional calculation result including the slope and the retaining wall. road and a model generating unit for generating a model.

[0017] According to this configuration, when a three-dimensional polyline is generated by determining the planar coordinates and height of the terrain surface, by performing an intersection calculation between the retaining wall surface installed based on that polyline and the slope, the shape of the part where the retaining wall will be installed can be obtained precisely and continuously in three dimensions.

[0018] The input unit can also receive at least an input of the penetration width of the retaining wall as an attribute of the retaining wall. The polyline generation unit can create a three-dimensional polyline when the input unit receives the input of the penetration width of the retaining wall.

[0019] Further, a three-dimensional calculation program for a retaining wall that automatically calculates a retaining wall on a three-dimensional road model includes an input process for receiving input of attributes of the retaining wall, a calculation process for executing an intersection calculation between a retaining wall surface based on the attributes input in the input process and a terrain surface of the three-dimensional road model, an installation process for installing a cut slope in the retaining wall maximum height section obtained by the intersection calculation in the calculation process, and an intersection calculation between the cut surface of the cut slope installed in the installation process and the terrain surface of the three-dimensional road model, thereby calculating a three-dimensional model including the slope and the retaining wall. road A model generating step of generating a model can be executed by a computer.

[0020] It can also be premised on a three-dimensional calculation method for a retaining wall that automatically calculates a retaining wall on a three-dimensional road model. This method includes an input step of receiving input of attributes of the retaining wall, a calculation step of executing an intersection calculation between a retaining wall surface based on the attributes input in the input step and a terrain surface of the three-dimensional road model, an installation step of installing a cut slope in the retaining wall maximum height section obtained by the intersection calculation in the calculation step, and an intersection calculation between the cut surface of the cut slope installed in the installation step and the terrain surface of the three-dimensional road model, thereby calculating a three-dimensional model including the slope and the retaining wall. road and a model generating step of generating a model. Effect of the Invention

[0021] As described above, by calculating the intersection between the cut surface of the cut slope and the terrain surface, the end position and shape change point of the retaining wall can be precisely calculated in three dimensions. [Brief description of the drawings]

[0022] [Figure 1] FIG. 2 is a configuration diagram of a three-dimensional calculation device for a retaining wall according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a block diagram of a three-dimensional calculation device for a retaining wall. [Diagram 3] FIG. 2 is a diagram showing an example of a three-dimensional road model. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] 1 is a flowchart showing a procedure for generating a three-dimensional road model. [Figure 6] FIG. 2 is a diagram showing an example of a road centerline. [Figure 7] FIG. 13 is a diagram showing an example of a user interface screen for setting a road width. [Figure 8] FIG. 13 is a diagram showing an example of the result of intersection calculation between a slope surface and a terrain surface. [Figure 9] 11 is a flowchart showing a three-dimensional calculation processing procedure for a retaining wall. [Figure 10] FIG. 13 is a diagram showing an example of a user interface screen for inputting a retaining wall shape. [Figure 11] A figure showing an example of a user interface screen for inputting a cut and embed method for a retaining wall. [Figure 12] FIG. 1 is a diagram explaining a method of cutting and embedding a retaining wall. [Figure 13] This is a diagram explaining the cutting and embedding method for a retaining wall with an L-shaped waterway. [Figure 14] FIG. 13 is a diagram showing an example of a user interface screen for inputting a cut earth installation method for a retaining wall. [Figure 15] This is a diagram explaining the case where a retaining wall is installed by specifying its height. [Figure 16] This is a diagram explaining the case where installation is performed by specifying the width from the linear center to the top of the retaining wall. [Figure 17] A figure showing an example of a user interface screen for inputting a method for embedding soil in a retaining wall. [Figure 18] FIG. 13 is a diagram for explaining a case where the depth from the foundation to the topography is specified. [Figure 19] FIG. 13 is a diagram for explaining the case where designation is made at the intersection point between an L-shaped waterway and a landform. [Figure 20] FIG. 13 is a diagram showing an example of a user interface screen for inputting a method for installing an embankment for a retaining wall. [Figure 21] FIG. 13 is a diagram illustrating the case where a retaining wall is installed directly on a protected road shoulder. [Figure 22] This is a diagram explaining the case where a retaining wall is installed on an embankment by specifying its height. [Figure 23] FIG. 13 is a diagram for explaining the case where the width of the linear center is specified and the center is installed. [Figure 24] FIG. 13 is a diagram showing an example of the result of an intersection calculation between a retaining wall surface and a terrain surface. [Diagram 25] FIG. 13 is a diagram showing an example of the result of an intersection calculation between a cut surface and a terrain surface. [Figure 26] This is a cross-sectional view showing the cut slope after it has been installed. [Figure 27] FIG. 13 is a plan view showing a case where an end section of a slope is determined by intersection calculation. [Figure 28] FIG. 13 is a side view showing an example in which a three-dimensional polyline is displayed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings. Note that the following description of the preferred embodiments is merely illustrative in nature and is not intended to limit the present invention, its applications, or its uses.

[0024] FIG. 1 is a configuration diagram of a three-dimensional calculation device 1 for a retaining wall according to an embodiment of the present invention, and FIG. 2 is a block diagram of the three-dimensional calculation device 1 for a retaining wall. The three-dimensional calculation device 1 for a retaining wall is composed of a personal computer, and includes a main body 10, a display unit 11, an operation unit 12, and a storage device 13. The main body 10 has a control unit 10A and a communication module 10B. The control unit 10A is composed of, for example, a CPU (Central Processing Unit), a ROM, and a RAM (memory), and operates according to a program. The memory is a work memory for expanding the program when the CPU executes the three-dimensional calculation program for a retaining wall, and a buffer memory for temporarily storing data. The communication module 10B is a part that communicates with an external terminal via, for example, the Internet, and is configured to be able to transmit and receive data.

[0025] The control unit 10A configures an installation unit 10a, an input unit 10b, a calculation unit 10c, a model generation unit 10d, a polyline generation unit 10e, and the like, which will be described later. The installation unit 10a, the input unit 10b, the calculation unit 10c, the model generation unit 10d, and the polyline generation unit 10e may be configured only by the hardware that configures the control unit 10A, or may be configured by a combination of hardware and software. For example, the CPU executes a three-dimensional calculation program, which enables the control unit 10A to realize each function of the installation unit 10a, the input unit 10b, the calculation unit 10c, the model generation unit 10d, and the polyline generation unit 10e.

[0026] The display unit 11 is configured, for example, with a liquid crystal display device, an organic EL display device, etc. The display unit 11 is connected to the control unit 10A and is controlled by the control unit 10A, and is capable of displaying various setting screens, input screens, design screens, analysis screens, etc.

[0027] The operation unit 12 is composed of devices for a user to operate the retaining wall 3D calculation device 1. The operation unit 12 includes, for example, a keyboard 12a and a mouse 12b, but may also include a touch operation panel incorporated in the display unit 11, various pointing devices, and the like. The operation unit 12 is connected to the control unit 10A, and the control unit 10A can detect operations performed by the user through the operation unit 12.

[0028] The storage device 13 is composed of a hard disk drive, a solid state drive, or the like capable of storing various data, programs, and the like. The storage device 13 is connected to the control unit 10A, and stores transmitted data and reads stored data according to instructions from the control unit 10A. The storage device 13 may be built into the main body unit 10, or may be provided outside the main body unit 10. The storage device 13 may also be an external server or a so-called cloud-type storage system. Only a part of the storage device 13 may be built into the main body unit 10, and the rest may be provided outside.

[0029] The storage device 13 stores a 3D retaining wall calculation program that causes a computer to execute each of the steps described below. The form in which this 3D retaining wall calculation program is provided to the user is not particularly limited, and may be provided to the user in a state recorded on a recording medium A such as a CD-ROM or DVD-ROM as shown in Fig. 1, for example, or may be provided to the user in a form that can be downloaded from an external server via the Internet or the like. By installing the provided 3D retaining wall calculation program in a general-purpose personal computer, the personal computer can be used as the 3D retaining wall calculation device 1.

[0030] When installing the 3D retaining wall calculation program in a general-purpose personal computer, it is sufficient to install it in the storage device 13. Also, it is possible to use the general-purpose personal computer as the 3D retaining wall calculation device 1 by accessing an external server in which the 3D retaining wall calculation program is installed, and the location where the 3D retaining wall calculation program is installed is not particularly limited.

[0031] The three-dimensional retaining wall calculation device 1 is a device that uses software for supporting road design to create a three-dimensional road model 100, an example of which is shown in Fig. 3, and executes a process of automatically calculating a retaining wall on the created three-dimensional road model 100. Data constituting the three-dimensional road model 100 is stored, for example, in a storage device 13. A control unit 10A converts data read from the storage device 13 into an image representing the three-dimensional road model 100 as shown in Fig. 3, and displays it on the display unit 11. This allows the user to check the three-dimensional road model 100 on the display unit 11. The three-dimensional road model is displayed as a color image.

[0032] As also shown in Fig. 4, the three-dimensional road model 100 has a main road 101, a ramp (connecting road) 102, a side road 103, and a general road 104. The main road 101 is a wide road such as an expressway. The ramp 102 is a road that connects the main road 101 and the general road 104, is narrower than the main road 101, and is located lower than the main road 101 in the portion shown in Fig. 3. The ramp 102 has an upward gradient toward the junction with the main road 101, and approaches the main road 101. The side road 103 is located lower than the ramp 102.

[0033] Since the ramp 102 is located below the main road 101, an embankment 105 is formed between the main road 101 and the ramp 102. In addition, a flat bank (flat portion) 106 is formed between the embankment 105 and the ramp 102. An embankment 107 and a retaining wall 110 are formed between the ramp 103 and the side road 103. An embankment 109 is formed on the side of the side road 103 opposite the retaining wall 110.

[0034] The three-dimensional road model 100 shown in Fig. 3 can be generated by using a conventionally known road design CAD (software). Specifically, the three-dimensional road model 100 can be generated by using a three-dimensional retaining wall calculation device 1 in which road design CAD software is installed, and going through the steps of the flowchart shown in Fig. 5.

[0035] In step SA1 after the start, the user input of the road centerline alignment is accepted. The road centerline alignment is composed of a combination of elements such as straight lines, arcs, and clothoid curves, as shown in Fig. 6, for example, and the start and end points are fixed, as are the pass points between them that must be passed. The area between the fixed points is composed of a combination of the above elements.

[0036] When inputting a road center alignment, the user operates the operation unit 12. The type of operation performed on the operation unit 12 is detected by the input unit 10b of the control unit 10A. The input unit 10b detects the operation of the operation unit 12 and thereby accepts the input of the road center alignment. In the example shown in FIG. 3, a main road 101, a ramp 102, and a side road 103 exist, so the input unit 10b accepts the input of each of the road center alignments of the main road 101, the ramp 102, and the side road 103. In other words, the input unit 10b is configured to accept the input of a first road center alignment and a second road center alignment that are different from each other, and this makes it possible to generate a three-dimensional road model 100 that is premised on multiple alignments.

[0037] In step SA2, the user inputs the longitudinal gradient and the cross gradient. The longitudinal gradient and the cross gradient may be inputted by a screen input method in which the longitudinal gradient and the cross gradient are inputted from a diagram showing the longitudinal end face shape and a diagram showing the cross section shape, or by a numerical input method in which the gradient is inputted as a numerical value for each measurement point. In either case, the input unit 10b detects the operation of the operation unit 12 to receive the input of the longitudinal gradient and the cross gradient.

[0038] In step SA3, the road width is accepted as a road width setting by the user. The road width can be input using, for example, a road width setting user interface screen 200 shown in FIG. 7. The control unit 10A generates the road width setting user interface screen 200 and displays it on the display unit 11. The road width setting user interface screen 200 is provided with a plurality of input fields 201 in which the road classification, number of diagonal lines, center strip, median strip, side strip, width of each lane, shoulder width, etc. can be individually input. Any numerical value can be input into each input field 201 by operating the operation unit 12. The input unit 10b detects the operation of the operation unit 12 to accept the input of the road width and set the input road width.

[0039] In step SA4, the calculation unit 10c generates a three-dimensional road surface model that constitutes the three-dimensional road model. In the three-dimensional road surface model, the road surfaces of the main road 101, the ramp 102, and the side road 103 are displayed as three-dimensional models.

[0040] In step SA5, a 3D model part with a slope gradient, a berm width, and a bank slope is set on the 3D road surface model of each linearity. Specifically, a place where a slope is to be set on the 3D road surface model is specified, and a 3D part of the slope is specified to be set on the place. Then, the setting unit 10a sets a 3D slope at the specified place. For example, when the road center alignment of the main road 101 is set as the first road center alignment and the road center alignment of the ramp 102 is set as the second road center alignment, the setting unit 10a sets a slope composed of the embankment 105 between the first road center alignment and the second road center alignment. Step SA5 is a slope setting process for setting a 3D slope on the 3D road model. Benches and bank slopes are set in the same manner. Through the above steps, a 3D road model with a slope and bank slope as shown in FIG. 3 is generated.

[0041] In step SA6, the calculation unit 10c executes an intersection calculation between the slope surface showing the three-dimensional shape of the slope and the terrain surface of the three-dimensional road model. This intersection calculation makes it possible to determine the cut section and the bank section. Figure 8 shows the result of the intersection calculation in step SA6, and shows an example of the cut section and the bank section.

[0042] Next, the three-dimensional calculation process of the retaining wall will be described based on the flowchart shown in FIG. 9. In step SB1 after starting, it is determined whether the section to be installed on the retaining wall is a cut section or a bank section. In this determination, the calculation result in step SA6 of the flowchart shown in FIG. 5 is used. If it is determined in step SB1 that the section to be installed on the retaining wall is a cut section, the process proceeds to step SB2, and if it is determined that the section to be installed on the retaining wall is a bank section, the process proceeds to step SB3. In steps SB2 and SB3, the user inputs the attributes of the retaining wall. The attributes of the retaining wall include the shape of the retaining wall, the embedment method of the retaining wall, and the installation method of the retaining wall. Therefore, the input unit 10b accepts inputs of the shape of the retaining wall, the embedment method of the retaining wall, and the installation method of the retaining wall as the attributes of the retaining wall. A specific description will be given below.

[0043] When the user inputs the shape of the retaining wall, the user can use, for example, a user interface screen 230 for inputting the retaining wall shape shown in Fig. 10. The control unit 10A generates the user interface screen 230 for inputting the retaining wall shape and displays it on the display unit 11. The user interface screen 230 for inputting the retaining wall shape is provided with first to fifth icons 231 to 235 indicating the retaining wall shape. The first icon 231 indicates a block-built retaining wall, the second icon 232 indicates an L-shaped retaining wall, the third icon 233 indicates an inverted T-shaped retaining wall, the fourth icon 234 indicates a gravity-type retaining wall, and the fifth icon 235 indicates a reinforced earth retaining wall. The input unit 10b detects which of the first to fifth icons 231 to 235 has been operated by the user operating the operation unit 12. By detecting the operation of the operation unit 12, the input unit 10b accepts input of a retaining wall shape selected by the user from among block masonry retaining walls, L-shaped retaining walls, inverted T-shaped retaining walls, gravity retaining walls, and reinforced earth retaining walls, and sets the inputted retaining wall shape. Note that the retaining wall shapes are not limited to the above-mentioned five, and other retaining wall shapes may be input. Also, the retaining wall shape may be input using a pull-down menu or the like other than icons.

[0044] When the user inputs the embedment method of the retaining wall, the user can use, for example, a user interface screen 240 for inputting the cut and embedment method of the retaining wall shown in Fig. 11. The control unit 10A generates the user interface screen 240 for inputting the cut and embedment method of the retaining wall and displays it on the display unit 11. The user interface screen 240 for inputting the cut and embedment method of the retaining wall is provided with a first icon 241 and a second icon 242 indicating the cut and embedment method of the retaining wall. The first icon 241 indicates a case where the embedment depth from the road surface (protected shoulder) is specified, and as in the example of Fig. 12, the foundation 111 and embedment depth D of the retaining wall 110 are set.

[0045] The second icon 242 is a cutting and embedding method for a retaining wall 110 having a water channel, such as an L-shaped water channel 112 or a U-shaped water channel, as shown in FIG.

[0046] When the user inputs the installation method of the retaining wall, the user can use, for example, a user interface screen 250 for inputting the cut earth installation method of the retaining wall shown in Fig. 14. The control unit 10A generates the user interface screen 250 for inputting the cut earth installation method of the retaining wall and displays it on the display unit 11. The user interface screen 250 for inputting the cut earth installation method of the retaining wall is provided with a first icon 251 and a second icon 252 indicating the cut earth installation method of the retaining wall.

[0047] The first icon 251 is selected when it is desired to specify the height of the retaining wall before installation, and the embedment depth D and the height H1 of the retaining wall are set as shown in Fig. 15. The second icon 252 is selected when it is desired to specify the width from the linear center to the top edge of the retaining wall before installation, and the embedment depth D and the distance (width W1) from the road center alignment L1 (linear center) of the main road 101 to the front edge of the top edge of the retaining wall are set as shown in Fig. 16.

[0048] When the user inputs the embankment embedment method of the retaining wall, the user can input the embankment embedment method of the retaining wall using, for example, a user interface screen 260 for inputting the embankment embedment method of the retaining wall shown in Fig. 17. The control unit 10A generates the user interface screen 260 for inputting the embankment embedment method of the retaining wall and displays it on the display unit 11. The user interface screen 260 for inputting the embankment embedment method of the retaining wall is provided with a first icon 261 indicating the embankment embedment method of the retaining wall. The first icon 261 can be specified as either Type 1, which is specified by the depth from the foundation 111 to the terrain 108 as shown in Fig. 18, or Type 2, which is specified by the intersection of a waterway such as an L-shaped waterway 112 or a U-shaped waterway and the terrain 108 as shown in Fig. 19.

[0049] When the user inputs the banking installation method for a retaining wall, the user can use, for example, a user interface screen 270 for inputting the banking installation method for a retaining wall shown in Fig. 20. The control unit 10A generates the user interface screen 270 for inputting the banking installation method for a retaining wall and displays it on the display unit 11. The user interface screen 270 for inputting the banking installation method for a retaining wall is provided with first to fourth icons 271 to 274 indicating the banking installation methods for a retaining wall.

[0050] The first icon 271 is selected when installing directly on a protected shoulder, and as shown in Figure 21, the top edge (top surface) of the retaining wall 110 is installed directly on the shoulder of the main road 101, and the intersection position between the installed retaining wall 110 and the terrain 108 is calculated from the shoulder of the main road 101.

[0051] The second icon 272 is selected when the height of the retaining wall is to be specified and the wall is to be placed on the bank. As shown in FIG. 22, the position of the intersection with the bank 105 is calculated from the height of the retaining wall 110 and the embedment depth D.

[0052] 23, the third icon 273 is selected when specifying the width W2 from the linear center to the intersection of the retaining wall 110 and the terrain 108, and the fourth icon 274 is selected when specifying the width W3 from the linear center to the retaining wall 110 and the top edge. In other words, the intersection position of the retaining wall 110 installed together with the embankment 105 and the terrain 108 is calculated based on the top edge width or ground width specified from the road center linear line L1 of the main road 101.

[0053] In this manner, steps SB2 and SB3 in the flowchart shown in FIG. 9 are executed. Steps SB2 and SB3 are input steps for accepting input of the attributes of the retaining wall. After step SB2, the process proceeds to step SB4. In step SB4, the calculation unit 10c executes an intersection calculation between the retaining wall surface and the terrain surface. The retaining wall surface can be automatically generated based on the attributes input by the input unit 10b. The terrain surface is possessed by the three-dimensional road model, and is represented by the lines indicated by the reference numeral 108 in, for example, FIG. 18 and FIG. 19. This step is a calculation step for executing an intersection calculation between the retaining wall surface and the terrain surface.

[0054] FIG. 24 is a diagram showing an example of the result of the intersection calculation of the retaining wall surface and the terrain surface. A main road 101 is located on the upper side of FIG. 24, and the terrain 108 is located below the main road 101. Three-dimensional intersection lines L10 corresponding to both longitudinal edges of the retaining wall (cut earth retaining wall) are generated by the intersection calculation of the retaining wall surface and the terrain surface. The area between the inner ends of both intersection lines L10 is the retaining wall maximum height section, and the area between the outer ends of both intersection lines L10 is the retaining wall section (retaining wall installation section). The retaining wall end is the intersection point of the intersection line L10 and the road shoulder line 119. In this way, when the calculation unit 10c executes the intersection calculation of the retaining wall surface and the terrain surface, the retaining wall maximum height section, the retaining wall section, and the retaining wall end can be obtained (step SB5).

[0055] In step SB6, it is determined whether or not the retaining wall maximum height section has been obtained in step SB5. If it is determined in step SB6 that the retaining wall maximum height section has been obtained, the process proceeds to step SB7. In step SB7, the installation unit 10a installs a cut slope in the retaining wall maximum height section obtained by intersection calculation by the calculation unit 10c (see Figures 25 and 26). This step is an installation step in which a cut slope is installed in the retaining wall maximum height section obtained by intersection calculation in the calculation step.

[0056] On the other hand, if it is not determined in step SB6 that the retaining-wall maximum height section has been obtained, the installation unit 10a does not install a cut slope in the retaining-wall maximum height section, and the process proceeds to step SB9.

[0057] In step SB8, the model generating unit 10d executes an intersection calculation between the cut surface of the cut slope installed by the installing unit 10a and the terrain surface of the 3D road model, thereby obtaining the shape of the retaining wall in a continuous 3D manner in the length direction.

[0058] In step SB9, 3D simulation including road surface, slope and retaining wall is performed. road The model is created by the model generation unit 10d. road As a model, a perspective view year A model shown as a cross-sectional view, a model shown as a plan view, a model shown as a side view, etc. are created. These steps SB8 and SB9 are a model generation step.

[0059] Next, a case where the section determination in step SB1 has led to the embankment section will be described. When proceeding from step SB3 to step SB10, a determination of the installation method is made. The installation method is acquired based on the attributes of the retaining wall input in step SB3. If the installation method is "height", proceed to step SB11, if the installation method is "top width", proceed to step SB12, and if the installation method is "embedded width", proceed to step SB15. It is also possible to set the installation method to "direct", and in this case, the end section is obtained by calculating the intersection between the front of the retaining wall installed from the protection shoulder and the terrain surface and by embezzling it.

[0060] In step SB11, the intersection calculation of the slope, the retaining wall, and the terrain is performed in the cross section (two-dimensional) of the specified pitch. Then, the process proceeds to step SB9.

[0061] In step SB12, the calculation unit 10c calculates the end section of the slope based on the width from the road centerline L1 of the main road 101 by intersection calculation. FIG. 27 is a plan view showing the positional relationship between the shoulder line 119 of the main road 101 and the retaining wall 110, and indicates the banking slope with line L13. The width from the road centerline L1 is indicated by the symbol W5, and the end P3 of the slope can be obtained based on this width W5. In this figure, only one end P3 of the slope is shown, but the other end (not shown) can be obtained in the same manner. The area between one end P3 and the other end corresponds to the end section.

[0062] In step SB13, the installation unit 10a installs a retaining wall surface based on the attributes inputted by the input unit 10b within the end section of the slope determined by the calculation unit 10c.

[0063] In step SB14, the model generation unit 10d executes an intersection calculation between the retaining wall surface installed by the installation unit 10a and the terrain surface of the three-dimensional road model in the end section of the slope. Then, the process proceeds to step SB9, where the model generation unit 10d executes an intersection calculation between the retaining wall surface installed by the installation unit 10a and the terrain surface of the three-dimensional road model. road Generate the model. All 3D models of retaining walls are created taking into account the embedment depth or height.

[0064] On the other hand, in step SB15, a three-dimensional polyline is created. Specifically, as shown in Fig. 28, the polyline generating unit 10e obtains the plane coordinates and height of the topographical surface of the three-dimensional road model, and generates a three-dimensional polyline L14 of the penetration width.

[0065] In step SB16, the installation unit 10a installs the retaining wall surface based on the three-dimensional polyline L14 created by the polyline generation unit 10e.

[0066] In step SB17, the model generating unit 10d executes an intersection calculation between the slope and the retaining wall surface installed by the installation unit 10a. Then, the process proceeds to step SB9, where the model generating unit 10d executes the above-mentioned three-dimensional road Generate the model. 3D road The model is displayed on the display unit 11.

[0067] As described above, the three-dimensional calculation program for a retaining wall includes an input step of receiving input of attributes of the retaining wall, a calculation step of executing an intersection calculation between the retaining wall surface based on the attributes input in the input step and the terrain surface of the three-dimensional road model, an installation step of installing a cut slope in the retaining wall maximum height section obtained by the intersection calculation in the calculation step, and an intersection calculation between the cut surface of the cut slope installed in the installation step and the terrain surface of the three-dimensional road model, thereby calculating a three-dimensional model including the slope and the retaining wall. road A model generating step of generating a model can be executed by a computer. In addition, by using the retaining wall 3D calculation device 1, a retaining wall 3D calculation method including an input step, a calculation step, a setting step, and a model generating step can be executed.

[0068] (Effects of the embodiment) According to this embodiment, when the maximum retaining wall height section is obtained by the intersection calculation between the retaining wall surface and the terrain surface, a cut slope of a three-dimensional shape can be installed in the maximum retaining wall height section. By executing the intersection calculation between the cut surface of this cut slope of a three-dimensional shape and the terrain surface of the three-dimensional road model, the shape of the part where the retaining wall is to be installed can be obtained continuously and precisely in three dimensions. In addition, by executing the intersection calculation between the retaining wall surface based on the attributes inputted by the input unit 10b and the terrain surface of the three-dimensional road model, the shape of the part where the retaining wall is to be installed can be obtained continuously and precisely in three dimensions. This allows the creation of a precise retaining wall development drawing, so that the required quantity of concrete, etc. can be accurately calculated at the design stage.

[0069] The above-described embodiment is merely illustrative in all respects and should not be construed as limiting. Furthermore, all modifications and variations within the scope of the claims are within the scope of the present invention. [Industrial Applicability]

[0070] As described above, the three-dimensional retaining wall calculation device and the three-dimensional retaining wall calculation program according to the present invention can be used in, for example, a road design CAD system. [Explanation of symbols]

[0071] 1. 3D calculation device for retaining walls 10a Installation part 10b Input section 10c calculation section 10d Model generation section 10e Polyline generation section

Claims

1. In a three-dimensional calculation device for a retaining wall, which automatically calculates a retaining wall on a three-dimensional road model, An input unit that receives input of attributes of the retaining wall including at least a shape of the retaining wall, a method of embedding the retaining wall, and a method of installing the retaining wall; a calculation unit that performs an intersection calculation between a retaining wall surface based on the attributes including at least a shape of the retaining wall, an embedment method of the retaining wall, and a construction method of the retaining wall and a terrain surface of the three-dimensional road model; an installation unit that installs a cut slope in the retaining wall maximum height section obtained by the intersection calculation by the calculation unit; A three-dimensional calculation device for retaining walls, comprising a model generation unit that performs intersection calculations between the cut surface of the cut slope installed by the installation unit and the terrain surface of the three-dimensional road model, and generates a three-dimensional road model including the cut slope and the retaining wall.

2. The three-dimensional calculation device for a retaining wall according to claim 1, The installation unit is configured to determine whether or not the maximum retaining wall height section has been obtained by intersection calculation by the calculation unit, and if it is determined that the maximum retaining wall height section has been obtained, install the cut slope in the maximum retaining wall height section, while if it is not determined that the maximum retaining wall height section has been obtained, not install the cut slope in the maximum retaining wall height section.This is a three-dimensional calculation device for retaining walls, characterized in that it is configured to determine whether the maximum retaining wall height section has been obtained by intersection calculation by the calculation unit, and if it is determined that the maximum retaining wall height section has been obtained, not install the cut slope in the maximum retaining wall height section.

3. In a three-dimensional calculation device for a retaining wall, which automatically calculates a retaining wall on a three-dimensional road model, An input unit that receives input of attributes of the retaining wall including at least a shape of the retaining wall, a method of embedding the retaining wall, and a method of installing the retaining wall; a calculation unit that, when the input unit receives an input of the attributes of the retaining wall, determines an end section of a slope by intersection calculation; an installation unit that installs a retaining wall surface based on the attributes including at least a shape of the retaining wall, an embedment method of the retaining wall, and an installation method of the retaining wall within the end section of the slope obtained by the calculation unit; A three-dimensional calculation device for a retaining wall, comprising: a model generation unit that performs intersection calculations between the retaining wall surface installed by the installation unit within an end section of the slope and the terrain surface of the three-dimensional road model, and generates a three-dimensional road model including the slope and the retaining wall.

4. In the three-dimensional calculation device for a retaining wall according to claim 3, The input unit receives an input of at least a top width of the retaining wall as an attribute of the retaining wall, A three-dimensional calculation device for retaining walls, characterized in that the calculation unit is configured to determine the end section of the slope by intersection calculation when the input unit accepts input of the top width of the retaining wall.

5. In a three-dimensional calculation device for a retaining wall, which automatically calculates a retaining wall on a three-dimensional road model, An input unit that receives input of attributes of the retaining wall including at least a shape of the retaining wall, a method of embedding the retaining wall, and a method of installing the retaining wall; a polyline generating unit that, when the input unit receives an input of the attributes of the retaining wall, obtains planar coordinates and heights of a terrain surface of the three-dimensional road model and creates a three-dimensional polyline; an installation unit that installs a retaining wall surface based on the attributes including at least a shape of the retaining wall, an embedment method of the retaining wall, and an installation method of the retaining wall, based on the three-dimensional polyline created by the polyline generation unit; A three-dimensional calculation device for retaining walls, characterized in that it is equipped with a model generation unit that performs intersection calculations between a slope and the retaining wall surface installed by the installation unit, and generates a three-dimensional road model including the slope and the retaining wall.

6. The three-dimensional calculation device for a retaining wall according to claim 5, The input unit receives an input of at least a root penetration width of the retaining wall as an attribute of the retaining wall, A three-dimensional calculation device for retaining walls, characterized in that the polyline generation unit generates the three-dimensional polyline when the input unit receives input of the root penetration width of the retaining wall.

7. In a 3D calculation program for retaining walls, which automatically calculates retaining walls on a 3D road model, An input process for receiving input of attributes of the retaining wall including at least a shape of the retaining wall, a method of embedding the retaining wall, and a method of installing the retaining wall; a calculation step of performing an intersection calculation between a retaining wall surface based on the attributes including at least the shape of the retaining wall, the embedment method of the retaining wall, and the installation method of the retaining wall and a terrain surface of the three-dimensional road model; a setting step of setting a cut slope in the retaining wall maximum height section obtained by the intersection calculation in the calculation step; A three-dimensional calculation program for a retaining wall, which causes a computer to execute a model generation process that performs an intersection calculation between the cut surface of the cut slope installed in the installation process and the terrain surface of the three-dimensional road model, and generates a three-dimensional road model including the cut slope and the retaining wall.

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