Construction management system, construction management method, and construction management program

Abstract

This aims to improve convenience in construction management and reduce the computational load associated with construction management. [Solution] The control unit 12 of the construction management system 1 identifies the construction unit quantity according to the construction division for the construction area of ​​the civil engineering work in the virtual space, determines the size of the voxel, which is the element that divides the construction area, according to the construction unit quantity, generates voxels based on the determined voxel size, associates attribute data with each voxel and stores it in the storage device. The size of the voxel is determined according to the planned amount of work for a predetermined period.

Description

Technical Field

[0001] The present disclosure relates to a construction management system, a construction management method, and a construction management program.

Background Art

[0002] For the purposes of improving construction efficiency and quality control, etc., efforts are underway to reproduce the construction site in a virtual space, such as a digital twin, and perform simulations, etc. For the reproduction of the construction site, three-dimensional information of the ground features is used as point cloud data, etc. The point cloud data is generated by, for example, a measurement method using a laser scanner or a photogrammetry method using an unmanned aerial vehicle (UAV).

[0003] In civil engineering construction, verification is performed as to whether the construction within the construction scope is in accordance with the plan. However, in order to reflect the progress of the real world in the construction scope in the virtual space, it has been laborious because an operator needs to correct the ground surface based on the point cloud data.

[0004] For example, Patent Document 1 describes generating a wire model of the terrain, giving a surface to the wireframe to generate a surface model, and generating a voxel model that approximates the surface model. In this system, the measured pile positions are displayed in a virtual space including a set of voxels, and the deviation between the voxels and the pile positions is visualized.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Voxels are suitable for calculating the volume of soil to be cut or added. Reducing the size of the voxels allows for more accurate management, but it also increases the amount of data, which in turn increases the computational load on the data. [Means for solving the problem]

[0007] This disclosure provides a construction management system. The construction management system uses a computer to identify construction unit quantities according to construction divisions for the construction area of ​​a civil engineering work in a virtual space, to determine the size of voxels for managing the progress of construction within the construction area, based on the construction unit quantities, to generate voxels based on the determined voxel sizes, and to associate attribute data with each voxel and store it in a storage device.

[0008] This disclosure provides a construction management method. In this construction management method, a computer identifies construction unit quantities according to construction divisions for the construction area of ​​a civil engineering work in a virtual space, determines the size of voxels for managing the progress of construction within the elements that divide the construction area according to the construction unit quantities, generates voxels based on the determined voxel sizes, and stores attribute data associated with each voxel in a storage device.

[0009] This disclosure provides a construction management program. The construction management program uses a computer as a means to identify construction unit quantities according to construction divisions for the construction area of ​​a civil engineering work in a virtual space, determine the size of voxels for managing the progress of construction within the construction area, which are elements that divide the construction area, according to the construction unit quantities, generate voxels based on the determined voxel sizes, and associate attribute data with each voxel and store it in a storage device. [Effects of the Invention]

[0010] According to this disclosure, it is possible to improve convenience in construction management and reduce the computational load related to construction management. [Brief explanation of the drawing]

[0011] [Figure 1] This is a schematic diagram of one embodiment of the construction management system of the first embodiment. [Figure 2] This figure shows an example of attribute data for the same embodiment. [Figure 3] This figure shows the hardware configuration of the information processing device of the same embodiment. [Figure 4] This flowchart shows the procedure for the voxel generation process in the same embodiment. [Figure 5] This is a schematic diagram showing the scope of construction of the embodiment. [Figure 6] This is a schematic diagram showing the construction area and voxels of the embodiment. [Figure 7] This figure shows an example of voxels generated in the embankment construction of the same embodiment. [Figure 8] This flowchart shows the procedure for voxel management processing in the same embodiment. [Figure 9] This is a schematic diagram showing the geological structure and voxels of the second embodiment. [Modes for carrying out the invention]

[0012] <First Embodiment> The following describes one embodiment of a construction management system, a construction management method, and a construction management program.

[0013] <Construction Management System> Figure 1 shows a schematic diagram of the construction management system 1. The construction management system 1 comprises one or more information processing devices. In the example in Figure 1, the construction management system 1 comprises a construction management device 10. The construction management device 10 is a terminal used by users such as construction managers. The construction management device 10 is connected to a server 11 via a network (not shown).

[0014] The construction management device 10 includes a control unit 12, a ground surface data storage unit 13, an object storage unit 14, an attribute data storage unit 15, and a construction plan storage unit 16. By executing a program, the control unit 12 functions as a construction management unit 17, an attribute information generation unit 18, and an image processing unit 19.

[0015] The construction management unit 17 specifies the construction unit quantity corresponding to the construction division for the construction range of the civil engineering work in the virtual space. The construction division is a spatial division or a temporal division. The construction unit quantity indicates the construction quantity divided by the construction division. An example of a spatial construction division is the position of a temporary structure such as a shoring. Also, an example of a spatial construction division is a division according to the working ability of the construction machine. This division is, for example, the capacity of the bucket of an excavator. Also, the temporal division is the planned work quantity scheduled within a predetermined period (for example, one day).

[0016] The construction management unit 17 determines the size of the voxel, which is an element obtained by dividing the construction range, according to the construction unit quantity. The construction management unit 17 acquires the data necessary for construction management from the server 11. Also, the construction management unit 17 acquires the data necessary for construction management from each of the storage units 13 to 16 and updates the data in each of the storage units 13 to 16 as necessary.

[0017] Furthermore, the construction management unit 17 acquires construction performance data from the construction machine 100 that performs construction via the server 11. The construction management unit 17 may directly receive the construction performance data from the construction machine 100. Or, the construction management unit 17 may acquire the data input by the user via the input device H14 (see FIG. 3).

[0018] The attribute information generation unit 18 associates attribute data for each voxel and stores it in the attribute data storage unit 15. The attribute information generation unit 18 acquires the data necessary for generating the attribute data from the server 11. Also, the attribute information generation unit 18 acquires the data necessary for generating the attribute data from each of the storage units 13 to 16 and updates the data in each of the storage units 13 to 16 as necessary.

[0019] The image processing unit 19 displays the generated voxels in the virtual space. The image processing unit 19 also handles all aspects of displaying objects in the virtual space. The image processing unit 19 acquires data necessary for display control of the virtual space from each storage unit 13-16 and updates the data in each storage unit 13-16 as needed. The image processing unit 19 outputs the image of the virtual space to the display device H15 (see Figure 3).

[0020] The ground surface data storage unit 13 stores ground surface data. The ground surface data includes point cloud data representing the ground surface of the construction site and its surroundings. The point cloud data is three-dimensional data of features at the construction site. The point cloud data is pre-generated using a measurement method with a laser scanner or a photogrammetry method with a UAV.

[0021] The object storage unit 14 stores object data. The objects are BIM (Building Information Modeling) objects, representing objects within a construction site. Each object has coordinates in a virtual space. The object data includes object data for temporary structures at the construction site and object data for generated voxels.

[0022] The attribute data storage unit 15 stores attribute data 150 associated with each object. Figure 2 shows an example of attribute data 150 associated with each voxel. Quality control of soil (excavated soil, embankment material, etc.) is performed by updating the attribute data 150. The attribute data 150 includes coordinates, construction date and time, voxel size, and quality control data. The coordinates have three-dimensional coordinates in virtual space. The coordinates may include at least one of the latitude, longitude, and height in the real world. The construction date and time may include the most recent date and time when construction was performed, as well as dates and times indicating past construction history.

[0023] Voxel size indicates the dimensions of a voxel. A voxel is a rectangular prism. The voxel size stores the width, depth, and height. The volume may also be included in the voxel size data.

[0024] Quality control data includes soil properties. The quality control data may also include density and compaction count. The compaction count indicates the number of times compaction was performed at the construction site using a compaction roller or similar device. The construction plan storage unit 16 stores construction plan data. The construction plan data includes the construction date and time and the work area. The work area is a division of the construction area into stages of a predetermined period, and is represented by coordinates in a virtual space.

[0025] <Hardware Configuration> Referring to Figure 3, the hardware configuration of the construction management device 10 will be described. The construction management device 10 consists of an information processing device H10.

[0026] The information processing device H10 comprises a processor H11, a communication device H12, a storage device H13, an input device H14, and a display device H15. Note that this hardware configuration is an example, and it can be implemented using other hardware.

[0027] The storage device H13 (computer-readable medium) stores data and programs for executing various functions. Examples of storage devices H13 include ROM, RAM, and hard disks. Storage devices H13 include any available recording media that can be accessed by a general-purpose or dedicated computer. The storage device H13 contains the construction management program and various data used to execute the program.

[0028] The processor H11 reads programs and data stored in the memory device H13 via the bus H16, etc., and performs control using them. Examples of processor H11 include CPUs, MPUs, GPUs, NPUs, etc. This processor H11 loads programs into RAM and executes various processes for each operation. The processor H11 is not limited to performing software processing for all the operations it performs. For example, the processor H11 may have dedicated hardware circuits (e.g., application-specific integrated circuits: ASICs) that perform hardware processing for at least a portion of the operations it performs. In other words, the processor H11 can be composed of any of the following:

[0029] [1] One or more H11 processors that operate according to a computer program (software) [2] One or more dedicated hardware circuits that perform at least some of the various processes. [3] Circuits (circuitry) that include combinations of these. Communication device H12 is an interface that establishes a communication path with other devices via a network and performs data transmission and reception via wireless or wired communication.

[0030] The input device H14 is a touch panel, keyboard, mouse, etc. Alternatively, the input device H14 may be a microphone. The display device H15 is a liquid crystal display, etc., that displays the screen. <Overview of Voxel Generation Process> Referring to Figure 4, the procedure for voxel generation will be explained. Here, we will describe a configuration in which the construction management program is installed on the construction management device 10. The user inputs various data using the input device H14 provided on the construction management device 10. The construction management device 10 generates voxels by executing the construction management program using the input data and the data stored in the storage device H13, and performs construction management using the generated voxels.

[0031] The following describes an example of excavation work in which earth-retaining supports are installed in advance. In this excavation work, earth-retaining supports are installed within the construction area, and excavation is carried out inside the earth-retaining supports. Once the excavation has progressed to the predetermined depth, bracing is installed between the earth-retaining supports and excavation is continued.

[0032] The control unit 12 sets the construction area in the ground surface data (step S1). The control unit 12 may set a construction area of ​​a location and size specified by the user in the virtual space. Alternatively, the control unit 12 may read the design data and set a construction area Z1 of a specified location and size in the virtual space.

[0033] As shown in Figure 5, the control unit 12 sets the construction area Z1 along the ground surface using the ground surface data 130. In the example in Figure 5, the ground surface data 130 has boundary points 132 located at the boundary of the construction area Z1, and the construction area Z1 is set by connecting the boundary points 132 with lines 133. The control unit 12 also sets a construction area Z1 with depth by setting the excavation depth in the depth direction (opposite Z direction in Figure 5) using the ground surface data 130. An object of an earth retaining wall 30, which is an earth retaining support structure, is placed within the construction area Z1.

[0034] Returning to Figure 4, the control unit 12 acquires the voxel generation conditions (step S2). In this embodiment, the size of the voxel is set according to the support structure position, the planned work volume, and the work capacity. The voxel generation conditions may also be set by the user for each construction range Z.

[0035] (Setting the size of the voxel according to the position of the support structure) Next, the control unit 12 sets the size of the voxel based on the voxel generation conditions obtained in step S2 (step S3). This section explains how to set the size of voxels according to the position of the support structure as a condition for voxel generation.

[0036] Figure 6 is a simplified diagram of a temporary earth-retaining support structure. In this diagram, an earth-retaining wall 30 and multiple bracing beams 35 are installed as earth-retaining support structures. In civil engineering work, after the first excavation surface 31 is formed by excavation, the first bracing beam 35A is installed. Next, excavation is carried out to the second excavation surface 32, which is deeper than the first excavation surface 31. Once the second excavation surface 32 is formed, the second bracing beam 35 (not shown) is installed. In this way, bracing beams 35 are installed in stages at different depths in the trench, and excavation is carried out until the lowest bracing beam 35 is below.

[0037] For example, the control unit 12 defines the construction unit quantity as the area between the retaining walls 30, which are construction divisions, and having a depth from the first excavation surface 31 to the second excavation surface 32. The control unit 12 then sets the size of the voxels 50 so that the construction unit quantity is equally divided. In other words, the size of the voxels 50 is set so that the inner surface of the retaining wall 30 coincides with the side of the voxel 50 closest to the retaining wall 30. For the side of the retaining wall 30 and the side of the voxel 50 to coincide means that the relative distance between their sides is less than or equal to a predetermined distance or a predetermined ratio of the width of the voxel 50 (for example, 1 / 2).

[0038] At this time, the control unit 12 may determine the size of the voxel 50 to match the working capacity of the construction machine 100. For example, the volume of the voxel 50 may be set to the bucket capacity of the backhoe or a multiple thereof (bucket capacity Cb × N times, where N is a natural number).

[0039] By managing construction using the determined Voxel 50, it becomes possible to manage the amount of work completed and the remaining work in excavation work using the number of Voxel 50.

[0040] (Setting the voxel size according to the planned workload) Next, we will explain how to set the size of the voxels according to the planned amount of work. The control unit 12 identifies the planned amount of work for a predetermined period. For example, the control unit 12 obtains construction plan data from the construction plan storage unit 16 and identifies the work area Z2 for the target period (e.g., one day's worth). The work area Z2 may also be specified on the screen by the user operating the input device H14.

[0041] If it is necessary to control the construction unit quantity more precisely than the method described above, the control unit 12 may use the work area Z2 as the construction unit quantity instead of the area having a depth from the first excavation surface 31 to the second excavation surface 32. In this case, the control unit 12 sets the size of the voxels 50 so that the work area Z2 is divided equally. That is, the size of the voxels 50 is set so that the side of the voxel 50 closest to the boundary of the work area Z2 coincides with the boundary of the work area Z2.

[0042] In this case, as described above, the volume of the voxel may be set to be equal to or a multiple thereof of the bucket capacity of the backhoe. Figure 7 shows the voxels 50 generated during embankment construction. In the virtual space, the embankment plan surface 36 is set according to the planned amount of work. The area between the completed slope 34 and the embankment plan surface 36 represents the planned amount of work for a predetermined period. In Figure 7, the completed embankment is shown as voxels 50. The control unit 12 sets the size of the voxels 50 by dividing the area between the slope 34 and the embankment plan surface 36. At this time, as described above, the volume of the voxels may be set to be the average of the bucket capacities of the backhoe or a multiple of the bucket capacities.

[0043] (Setting the size of the voxel according to the work capacity) Next, we will explain how to set the size of the voxels according to the work capacity. The control unit 12 may set the size of the voxels 50 according to a construction unit amount according to the work capacity only, instead of a construction unit amount according to the support structure position and a construction unit amount according to the planned work amount. Alternatively, as described above, the size of the voxels 50 may be set by taking into account the work capacity in addition to the construction unit amount according to the support structure position and the construction unit amount according to the planned work amount.

[0044] The control unit 12 acquires the bucket capacity of the backhoe performing the excavation work, or the amount of excavation per predetermined time, as the working capacity of the construction machinery 100. If multiple different construction machinery 100 are used, the control unit 12 calculates the sum of the amount of excavation per predetermined time for each construction machinery 100. The predetermined time can be set to any time, such as 10 minutes, 30 minutes, or 1 hour. Alternatively, the control unit 12 may acquire the work volume, such as the bucket capacity or the amount of material transported per predetermined time, for a wheel loader or bulldozer, etc. Alternatively, the control unit 12 may acquire the work volume, such as the load capacity (loadable volume) or the amount of material transported per predetermined time, for a dump truck.

[0045] The control unit 12 sets the size of the voxels 50 to be equal to or a multiple thereof of the work capacity. This makes it possible to manage the amount of work that has been completed and the remaining amount of work using the number of voxels of a size corresponding to the work capacity.

[0046] As shown in Figure 4, the control unit 12 generates voxels 50 of the size set in step S3 (step S4). At this time, the control unit 12 sets the coordinates of the virtual space for each voxel 50. The voxels 50 can be moved within the virtual space by user instructions via the input device H14.

[0047] Furthermore, the control unit 12 generates attribute data 150 for the voxel 50 and stores it in the attribute data storage unit 15 in association with the voxel 50 (step S5). At this time, the control unit 12 stores the coordinates of the virtual space in the location information of the attribute data 150. The control unit 12 also stores the size determined in step S3 in the voxel size. In addition, the control unit 12 obtains boring information for the construction area Z from the server 11 to identify the soil type of the voxel 50 and stores it as soil type data in the attribute data 150.

[0048] <Overview of Voxel Management Process> Next, we will refer to Figure 8 to explain the overview of the voxel management process. The control unit 12 acquires construction performance data (step S10). An example of construction performance data is data acquired from the construction machine 100. The construction performance data acquired from the construction machine 100 includes the operating time of the construction machine 100. The construction performance data may also include the number of operations performed by the construction machine 100. For example, if the construction machine 100 is a backhoe, the number of operations may be the number of times the bucket has dug soil and transported it to a predetermined location. The number of operations can be detected by a sensor mounted on the backhoe. The sensor is at least one of the following: a GNSS (Global Navigation Satellite System) sensor, a tilt sensor attached to the boom, etc., an inertial sensor unit that detects acceleration and angular velocity, etc., a stroke sensor that detects the position of the bucket, etc. In addition to or instead of the above, at least one of the following may be used as construction performance data: data entered by the user and data measured by a measuring device such as a total station installed at the construction site.

[0049] The control unit 12 identifies the voxels 50 whose construction has been completed based on the construction performance data (step S11). The control unit 12 may also identify the voxels 50 whose construction has been completed around the construction machine 100 by multiplying the work capacity per unit time of the construction machine 100 by the operating time. Alternatively, the control unit 12 may identify the voxels 50 specified by the user as the voxels 50 whose construction has been completed.

[0050] Alternatively, the control unit 12 may identify voxels in which construction has been completed based on the number of work sessions included in the construction performance data. Alternatively, the control unit 12 may identify voxels in which construction has been completed based on the difference between the measurement data of the ground surface measured by a measuring device such as a total station before the work and the newly received measurement data.

[0051] The control unit 12 updates the attribute data 150 of the voxel 50 identified in step S11 (step S12). For example, the control unit 12 updates the coordinates of the voxel 50 included in the attribute data 150. The control unit 12 also outputs an image of the virtual space where the voxel 50 has been moved to the updated coordinates to the display device H15.

[0052] Furthermore, the control unit 12 updates the construction date and time, etc., included in the attribute data 150. Alternatively, if compaction is performed by a compactor, the control unit 12 updates the number of compactions. <Effects of the First Embodiment> As described above, the first embodiment provides the following effects.

[0053] (1-1) The control unit 12 determined the size of the voxel 50 according to the construction unit amount corresponding to the construction division. This makes it possible to divide the voxel 50 into an appropriate range that matches the construction area Z1 without dividing it into unnecessarily small sections. This improves the convenience in construction management and reduces the load on calculation processing related to construction management.

[0054] (1-2) The control unit 12 determines the construction unit quantity according to the support structure position. Therefore, the size of the voxel 50 can be appropriately set to match the construction range Z1. (1-3) The control unit 12 determined the construction unit quantity according to the working capacity of the construction machine 100 performing the work. This allows the size of the voxel 50 to be appropriately set to match the construction machine 100 used for the work.

[0055] <Second Embodiment> Next, a second embodiment of the construction management system, construction management method, and construction management program will be described. In the second embodiment, the size of the voxel 50 is determined using boring information. Hereinafter, parts the same as in the first embodiment will be denoted by the same reference numerals and their detailed descriptions will be omitted.

[0056] Figure 9 is a schematic diagram of the ground structure estimation data 140. The ground structure estimation data 140 is included in the ground surface data 130. The ground structure estimation data 140 includes depth data of the boundary surfaces 142 of each layer 141A to 141C at boring survey points for investigating soil properties. The ground structure estimation data 140 also includes information on the soil properties of each layer. Furthermore, the ground structure estimation data 140 may include N values ​​indicating the hardness and compaction of the ground for each layer 141A to 141C, or for each predetermined depth.

[0057] In the process of setting the size of the voxels 50 (step S3), the control unit 12 ensures that each voxel 50 does not include the boundary surface 142 of the strata 141A to 141C. In other words, the size of the voxels 50 is set so that each voxel 50 is located between the boundaries of each strata 141A to 141C. Specifically, if the flatness of the boundary surface 142 is high, the size of the voxel 50 is set so that the bottom surface of the voxel 50 coincides with the boundary surface 142. For example, the relative distance between the plane and bottom surface of the voxel 50 and the boundary surface 142 may be set to be less than or equal to a predetermined distance. Since the thickness of the strata 141A to 141C is not constant, the number of voxels 50 in the depth direction of the strata 141A to 141C is adjusted according to the thickness.

[0058] The control unit 12 also generates voxels 50 (step S4) and stores attribute data 150 (step S5). At this time, the soil type of the strata 141A to 141C containing the voxels 50 is included in the attribute data 150. This ensures that each voxel 50 does not contain different soil types, making soil quality control easier.

[0059] <Effects of the second embodiment> As described above, the second embodiment provides the following effects. (2-1) The control unit 12 identifies the location of strata 141A to 141C and sets the size of the voxels 50 so as not to include the boundary surface 142 between strata 141A to 141C. As a result, since each of the voxels 50 does not contain different soil types, it becomes easier to manage the soil type of construction-generated soil in civil engineering works.

[0060] <Example of changes> The above embodiments can be implemented with the following modifications. Each embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0061] In the first embodiment, the control unit 12 generated voxels 50 inside the temporary structure such as the earth retaining support 131 in the virtual space. Alternatively, the control unit 12 may obtain the earth pressure distribution of the surrounding ground where the support is used during excavation in civil engineering work and determine the size of the voxels 50 according to the earth pressure distribution of the soil layer. In this embodiment, the control unit 12 can calculate the stress on the temporary structure using the voxels 50 outside the temporary structure.

[0062] • The target of voxel 50 generation is not limited to the soil within the construction area Z1. For example, the space can be divided according to the construction target, such as water or building materials. The control unit 12 may change the size of the voxels 50 depending on different locations within the same construction site.

[0063] The control unit 12 may change the size of the voxel 50 determined in step S3 based on the construction performance data. If the progress of the construction is behind schedule, there may be problems such as the soil in the excavation area being hard. In this case, there may be a discrepancy between the size of the voxel 50 and the amount of work done in a predetermined time (e.g., 30 minutes, 1 hour, etc.), and even parts that have actually been completed may be placed in the virtual space as voxels 50 that have not been completed. In this case, the control unit 12 may set the size of the voxel 50 to be smaller based on the construction performance data, etc.

[0064] In the above embodiment, a configuration in which the construction management program is installed on the construction management device 10 has been described. Alternatively, the construction management program may be installed on the server 11. The construction management device 10 manages civil engineering work using voxels 50 displayed in a virtual space by sending and receiving data with the server 11. In other words, the server 11 may identify the construction unit quantity according to the construction division, determine the size of the voxels 50 for the construction range according to the construction unit quantity, generate voxels 50 based on the determined size of the voxels, associate attribute data with each voxel 50 and store it in the storage unit.

[0065] Next, the technical concepts that can be understood from the above embodiments and alternative examples are described below. (Note 1) A construction management system in which the computer acquires the earth pressure distribution of the surrounding ground where the support structure is used during excavation in the civil engineering work, and adjusts the size of the voxels according to the earth pressure distribution of the soil layer. [Explanation of symbols]

[0066] 1...Construction management system, 10...Construction management device, 12...Control unit.

Claims

1. Computers Regarding the scope of civil engineering work in a virtual space, the construction unit quantity is identified according to the construction division, The size of the voxel, which is an element that divides the aforementioned construction area, is determined according to the aforementioned construction unit quantity. Based on the determined size of the voxel, the voxel is generated. A construction management system that associates attribute data with each of the aforementioned voxels and stores it in a storage device.

2. The construction management system according to claim 1, wherein the aforementioned construction divisions are determined by the planned amount of work for a predetermined period.

3. The construction boundary is determined according to the location of temporary structures installed within the construction area, as described in claim 1.

4. The construction management system according to any one of claims 1 to 3, wherein the construction division is determined according to the working capacity of the construction machinery performing the civil engineering work.

5. The aforementioned computer, Identify the location of each layer within the aforementioned construction area, The construction management system according to claim 1, wherein the size of the voxel is set such that each of the voxels is located between the boundaries of each layer.

6. Computers Regarding the scope of civil engineering work in a virtual space, the construction unit quantity is identified according to the construction division, The size of the voxel, which is an element that divides the aforementioned construction area, is determined according to the aforementioned construction unit quantity. Based on the determined size of the voxel, the voxel is generated. A construction management method that associates attribute data with each of the aforementioned voxels and stores it in a storage device.

7. Computers, Regarding the scope of civil engineering work in a virtual space, the construction unit quantity is identified according to the construction division, The size of the voxel, which is an element that divides the aforementioned construction area, is determined according to the aforementioned construction unit quantity. Based on the determined size of the voxel, the voxel is generated. A construction management program that functions as a means of associating attribute data with each of the aforementioned voxels and storing it in a storage device.

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