Airport engineering dynamic earthwork allocation method and system based on BIM

Abstract

The invention relates to the technical field of airport earthwork construction, in particular to an airport engineering dynamic earthwork allocation method and system based on BIM. The method comprises the following steps: respectively acquiring design elevation, material source type and initial topographic data; performing topographic survey based on a three-dimensional scanning technology to acquire initial topographic data; importing the initial topographic data into a BIM live-action modeling tool, and establishing a three-dimensional site model; the three-dimensional site model is partitioned and marked according to the design elevation and the material source type; and determining the minimum comprehensive transport distance of each region based on the partitioning and labeling, and obtaining final earth-rock allocation data. The positions and the numbers of various types of material sources can be vividly and intuitively reflected through the BIM model; and an earth-rock deployment scheme can be further optimized through the BIM model.

Description

Technical Field

[0001] The present invention relates to the technical field of airport earthwork construction, and in particular to a BIM-based airport engineering dynamic earthwork allocation method and system. Background Art

[0002] Airport construction has a positive significance for improving regional transportation, so all cities are actively planning and building airports. From the specific construction of the airport, it requires a large open space, and the flatness and stability of the site must meet the standards. Therefore, in the vast mountainous areas in the west, due to the limitations of the terrain, the "opening the mountain and filling the valley" method has to be adopted for construction, forming a large number of high-fill projects. Taking a certain international airport project as an example, the filling volume is about 209 million m³, the excavation volume is about 114 million m³, and the abandoned soil is about 12 million m³; the excavation volume of the off-site clearance treatment earthwork project is about 106 million m³. The material sources of the filling area are mainly clay, construction waste, strongly weathered rock of the mountain, and blasting block gravel, etc., which have the characteristics of many types of rock and soil, large volume, and large differences in engineering characteristics.

[0003] With the accelerated development of airport construction, the requirements for earthwork allocation technology are increasing. However, the traditional static earthwork allocation management method is relatively extensive, the operation sequence plan is not accurate, and only the static allocation of space is considered, which is out of the construction progress, and the advantages of engineering technology informationization have not been fully utilized. At the same time, reasonable earthwork allocation can reduce soil erosion, reduce noise and dust pollution in the city, and on the other hand, it can also produce good economic benefits.

[0004] Therefore, a method of earthwork allocation based on BIM+3D scanning technology was developed to solve such problems. Summary of the invention

[0005] In order to solve the above-mentioned problems, the present invention provides a BIM-based dynamic earthwork allocation method and system for airport engineering.

[0006] In the first aspect, the present invention provides a BIM-based dynamic earthwork allocation method for airport engineering, which adopts the following technical solutions: A BIM-based dynamic earthwork allocation method for airport engineering, comprising: Obtain the design elevation, material source type and initial terrain data respectively; Collect initial terrain data through topographic survey based on 3D scanning technology; Import the initial terrain data into the BIM real-scene modeling tool to build a three-dimensional site model; Partition and mark the 3D site model according to the design elevation and material source type; Based on zoning and marking, the minimum comprehensive transportation distance for each area is determined to obtain the final earthwork allocation data.

[0007] Furthermore, the respectively obtaining of the design elevation, material source type and initial terrain data includes collecting the initial terrain data by terrain measurement based on three-dimensional scanning technology, wherein the initial terrain data is collected by non-contact measurement of the terrain using a handheld three-dimensional scanning instrument.

[0008] Furthermore, the three-dimensional site model is divided and labeled according to the design elevation and material source type, including determining the scope and area of ​​the excavation area and the filling area according to the established three-dimensional site model and the cut-fill balance principle, and dividing the area according to the scope and area.

[0009] Furthermore, the regional division based on scope and area includes dividing the excavation area and the filling area into several areas (Wa, Wb..., Ta, Tb...) according to the type of material source; and dividing the large area into several small areas (Wa1, Wa2..., Tb1, Tb2...) according to the size of the area.

[0010] Furthermore, the method of determining the minimum comprehensive transportation distance for each area based on zoning and marking includes entering the coordinates of the center point of each zone, the type of material source and the amount of excavation and filling into a computer, and calculating the abandoned soil cost, the utilization cost in this area, the utilization cost for long-distance transportation, the excavation cost and the filling cost based on the allocation method of the earthwork calculation table, and obtaining the final earthwork allocation data based on the calculated costs.

[0011] Furthermore, the allocation method based on the earthwork calculation table calculates the cost of abandoned soil, the cost of utilization in this area, the cost of utilization by long-distance transportation, the cost of excavation surplus and the cost of filling gap respectively, including finding the point pair of the shortest distance between the excavation point and the corresponding filling point according to the priority of earthwork utilization; calculating the earthwork point with the shortest distance associated with the filling point in the point pair, if the earthwork point cannot meet the earthwork requirements, continue to find the next point with the shortest distance among the remaining earthwork points until the earthwork requirements are met, and calculate the transportation volume and transportation distance of each associated earthwork; calculating the shortest distance abandoned soil and rock point associated with the excavation point in the point pair, if the abandoned soil and rock point cannot meet the earthwork requirements, continue to find the next point with the shortest distance among the remaining earthwork points until the earthwork requirements are met, and calculate the transportation volume and transportation distance of each associated earthwork.

[0012] Furthermore, the final earthwork allocation data obtained based on the calculated cost includes the final earthwork allocation data being equal to the sum of the abandoned soil cost, the local utilization cost, the long-distance utilization cost, the excess excavation cost and the gap filling cost.

[0013] Second, a BIM-based dynamic earthwork allocation system for airport engineering, including: The data acquisition module is configured to respectively acquire design elevation, material source type and initial terrain data; The model module is configured to import the initial terrain data into the BIM reality modeling tool to establish a three-dimensional site model; The zoning module is configured to zone and label the three-dimensional site model according to the design elevation and material source type; The calculation module is configured to partition and mark each area to determine the minimum comprehensive transportation distance and obtain the final earthwork allocation data.

[0014] In a third aspect, the present invention provides a computer-readable storage medium storing a plurality of instructions, wherein the instructions are suitable for being loaded and executed by a processor of a terminal device, a method for dynamic earthwork allocation of airport engineering based on BIM.

[0015] In a fourth aspect, the present invention provides a terminal device including a processor and a computer-readable storage medium, wherein the processor is used to implement various instructions; and the computer-readable storage medium is used to store a plurality of instructions, wherein the instructions are suitable for being loaded by the processor and executing the method for dynamic earthwork allocation of airport engineering based on BIM.

[0016] In summary, the present invention has the following beneficial technical effects: 1. The BIM model can visually and intuitively reflect the location and quantity of various types of material sources; 2. The BIM model can further optimize the earthwork allocation plan; 3. Verify on-site material inventory through 3D scanning and update data in real time.

[0017] 4. Through the PDCA cycle management and control method, dynamically adjust the earthwork allocation plan to ensure that the plan effectively guides on-site construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of a BIM-based dynamic earthwork allocation method for airport engineering according to Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of earthwork allocation zoning according to Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the correlation analysis between the intermediate transportation and the total cost in a certain month in Example 1 of the present invention; Figure 4 This is a schematic diagram of the proportion of intermediate transshipment volume in the middle of a certain month in Example 1 of the present invention; Figure 5 It is a schematic diagram of the subsequent total engineering cost estimate and the proportion of each bid section of Example 1 of the present invention; Figure 6This is a schematic diagram of the floating range of future engineering costs in Example 1 of the present invention; Figure 7 It is a schematic diagram of the filler demand in each subsequent month for each bidding section of Example 1 of the present invention. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0020] Example 1 Reference Figure 1 , a BIM-based dynamic earthwork allocation method for airport engineering in this embodiment includes: Obtain the design elevation, material source type and initial terrain data respectively; Collect initial terrain data through topographic survey based on 3D scanning technology; Import the initial terrain data into the BIM real-scene modeling tool to build a three-dimensional site model; Partition and mark the 3D site model according to the design elevation and material source type; Based on zoning and marking, the minimum comprehensive transportation distance for each area is determined to obtain the final earthwork allocation data.

[0021] The acquisition of the design elevation, material source type and initial terrain data respectively includes collecting initial terrain data by terrain measurement based on three-dimensional scanning technology, wherein the terrain is non-contactly measured by a handheld three-dimensional scanning instrument to collect initial terrain data. The partitioning and marking of the three-dimensional site model according to the design elevation and material source type includes determining the scope and area of ​​the excavation area and the filling area according to the established three-dimensional site model and the principle of cut-fill balance, and dividing the area according to the scope and area. The regional division based on the scope and area includes dividing the excavation area and the filling area into several areas (Wa, Wb..., Ta, Tb...) according to the material source type; and dividing the large area into several small areas (Wa1, Wa2..., Tb1, Tb2...) according to the size of the area. The method of determining the minimum comprehensive transportation distance for each area based on zoning and marking includes entering the center point coordinates of each zone, the type of material source and the amount of excavation and filling into a computer, and calculating the abandoned soil cost, the utilization cost in this area, the utilization cost of long-distance transportation, the excavation cost and the filling cost based on the allocation method of the earthwork calculation table, and obtaining the final earthwork allocation data based on the calculated costs. The deployment method based on the earthwork calculation table calculates the cost of abandoned soil, the cost of utilization in the local area, the cost of utilization by long-distance transportation, the cost of excavation surplus and the cost of filling gap respectively, including finding the point pair of the shortest distance between the excavation point and the corresponding filling point according to the priority of earthwork utilization; calculating the earthwork site with the shortest distance associated with the filling point in the point pair, if the earthwork site cannot meet the earthwork requirements, continue to find the next point with the shortest distance in the remaining earthwork sites until the earthwork requirements are met, and calculate the transportation volume and transportation distance of each associated earthwork site; calculating the shortest distance abandoned soil and rock site point associated with the excavation point in the point pair, if the abandoned soil and rock site cannot meet the earthwork requirements, continue to find the next point with the shortest distance in the remaining earthwork sites until the earthwork requirements are met, and calculate the transportation volume and transportation distance of each associated earthwork site. The final earthwork allocation data obtained based on the calculated cost includes that the final earthwork allocation data is equal to the sum of the abandoned soil cost, the local utilization cost, the long-distance utilization cost, the excavation surplus cost and the filling cost.

[0022] Specifically: In order to improve engineering efficiency, reduce costs and promote refined on-site management, and achieve a dynamic allocation effect that takes into account both time and space, the earthwork allocation plan is comprehensively optimized through multi-intelligent methods with the help of dynamic programming ideas in operations research. On the basis of the earthwork allocation mathematical model constructed by earthwork scheduling, the table operation method is used to optimize the distribution path, thereby effectively improving the orderly management level of the on-site earthwork allocation link.

[0023] According to the scope of the airport project site, 3D scanning technology is used to measure the terrain, collect initial terrain data, and import the initial terrain data into the BIM real-scene modeling tool. With the advantages of BIM technology such as visualization, coordination, and powerful simulation, a 3D site model is established, and the results of earthwork allocation are displayed in the form of 3D animation to achieve the purpose of visual visualization. The earthwork allocation plan of the airport project is reasonably optimized and adjusted to reduce the capital investment of the project.

[0024] The technical solution of the present invention is realized by the following scheme: a method for dynamic earthwork allocation of airport engineering based on BIM+3D scanning technology, comprising the following operating steps: Step A: Immediately after entering the site, use 3D scanning technology to conduct topographic surveys to collect initial topographic data.

[0025] Before the project started, a handheld 3D scanner was used to collect initial terrain data, which was then imported into the BIM real-scene modeling tool. Compared with GIS measurement technology, 3D scanning measurement technology uses a non-contact measurement method, which has the characteristics of high sampling rate, high accuracy, high resolution, high compatibility, high speed, high precision, and strong adaptability.

[0026] Step B: Import the initial terrain data into the BIM real-scene modeling tool to build a three-dimensional site model.

[0027] Among them, the 3D scanning point cloud data completed by on-site scanning is extracted, sorted, reviewed and summarized, and then the 3D scanning point cloud data is imported into the BIM real-scene modeling tool to generate a 3D site model, thereby improving the accuracy and practicality of the model as well as the efficiency and accuracy of project management.

[0028] Step C: Divide and mark according to the design elevation and material source type.

[0029] Among them, a BIM model is established according to the initial terrain data, and the scope and area of ​​the excavation area (W) and the filling area (T) are determined and regional division is carried out based on the cut-fill balance principle.

[0030] Then, the excavation area and the filling area are divided into several areas (Wa, Wb..., Ta, Tb...) according to the material properties.

[0031] Finally, the large area is divided into several small areas (Wa1, Wa2..., Tb1, Tb2...) according to the size of the area.

[0032] Step D: With the help of the dynamic programming concept in operations research, on the mathematical model of earthwork allocation constructed by earthwork scheduling, the minimum comprehensive transportation distance of each area is comprehensively determined through multi-intelligent methods to formulate the final earthwork allocation plan.

[0033] Among them, the earthwork allocation plan first considers the principle of nearby utilization, reduces the total transportation volume, and reduces the project cost. It also considers the impact of on-site transportation roads and the conversion coefficient between natural cubic meters and compacted cubic meters.

[0034] The earthwork allocation scheme is determined by using the earthwork calculation table allocation method using a computer: (1) Enter the coordinates of the center point, material properties and excavation and filling quantities of each subarea into the computer; (2) Calculation of spoil: Since the soil and rocks in the excavation cannot be fully utilized due to different particle sizes, soil qualities, construction methods and engineering technical requirements, an accurate estimate of the unusable portion should be made based on the on-site geological conditions, and then a reasonable calculation of the transportation volume and distance should be made based on the distribution of the spoil site; Q= Including: Q-spoil cost L k -k Distance from abandoned soil area S k -k Amount of waste transported to the waste area (3) Calculation of earthwork used in this area: The part to be considered for utilization (remaining volume) is the earthwork that is removed from the excavation. First, consider "excavation and filling", which is the calculation of utilization in this area; B=( - )*L Including: B-the cost of using this area W k -k Excavation area transportation volume L-Transport distance in this area: 0 (4) Calculation of “filling gap and excavation surplus” of various earthworks: After the calculation of earthworks in this area is completed, the remaining amount is the “excavation surplus” of this area, and the shortfall is the “filling gap” of this area; X k =|W k -T k | Where: X k -k area filling and excavation allowance W k -k area excavation T k -k area fill volume (5) Long-distance transportation calculation: Find the point pair with the shortest distance between the excavation point and the corresponding filling point according to the priority of soil and rock utilization; calculate the shortest distance earth-borrowing site associated with the filling point in the point pair. If the earth-borrowing site cannot meet the earth-borrowing requirements, continue to find the next shortest distance point among the remaining earth-borrowing sites until the earth-borrowing requirements are met, and calculate the transportation volume and transportation distance of each associated earth-borrowing site; calculate the shortest distance earth-borrowing site associated with the excavation point in the point pair. If the earth-borrowing site cannot meet the earth-borrowing requirements, continue to find the next shortest distance point among the remaining earth-borrowing sites until the earth-borrowing requirements are met, and calculate the transportation volume and transportation distance of each associated earth-borrowing site; W m = Where: W m -M zone long-distance transportation utilization cost L i -i Distance from soil excavation area S i -i Earthwork transportation volume (6) Final “filling gap and excavation surplus” calculation: Summarize and calculate the remaining “filling gap and excavation surplus”; W= Where: W-total cost of long-distance transportation (7) Calculate the amount of abandoned soil and rocks at the "excavation surplus" point: Calculate the associated abandoned soil and rocks site points according to the above method, and calculate the transportation volume and distance of different types of soil and rocks; Y= Including: Y-excavation cost L k -k Distance from waste rock dump S k -k Abandoned soil and rock field transportation volume (8) Calculate the soil and rock borrowing for the "gap filling" points. Calculate the relevant soil and rock borrowing points according to the above method, and calculate the transportation volume and distance of different types of soil and rock; T= Where: T-filling cost L i -i Distance from soil excavation area S i -i Earthwork transportation volume (9) The final earthwork allocation data is obtained through the above calculations.

[0035] C=Q+B+W+Y+T Among them: C-total cost.

[0036] Step E: During the construction process, according to the construction progress, timely conduct 3D scanning of the current terrain, review the inventory of material sources in various areas on site based on the latest terrain data, and adjust and optimize the earthwork allocation plan in a timely manner when deviations occur.

[0037] During the construction process, 3D scanning was performed monthly according to the construction progress, and the terrain data at that time was collected and entered into the BIM model for comparative analysis, resulting in the following series of charts to guide subsequent construction. The earthwork allocation plan was compared and reviewed in a timely manner, and the deviations were adjusted in a timely manner to optimize the earthwork allocation plan.

[0038] like Figure 3 The figure shows a schematic diagram of the correlation analysis between intermediate transshipment and total cost in a certain month. By statistically analyzing the monthly data, the coefficient of intermediate transshipment and total cost and the proportion of intermediate transshipment volume in each month are obtained.

[0039] like Figure 4 As shown, this is a schematic diagram of the proportion of intermediate transshipment volume in the middle of a month.

[0040] like Figure 5 As shown, it is a schematic diagram of the subsequent total project cost estimate and the proportion of each bidding section. By sorting out the current data, we can get the current completed project volume and the total cost incurred. Then, through further calculation, we can get the subsequent total project cost estimate, the proportion of each bidding section, the remaining project volume, etc.

[0041] like Figure 6 The figure shows the floating range of future engineering costs. By analyzing the current data, the floating range of future engineering costs and the subsequent filling material demand can be estimated.

[0042] like Figure 7 The figure shows the filler demand for each section in the following months. By analyzing the above data, it is determined whether the earthwork allocation plan has any deviation during implementation. If there is a deviation, the earthwork allocation plan will be adjusted again according to the latest 3D scanning data of the month to ensure that the earthwork allocation plan is dynamically adjusted according to the actual situation on site.

[0043] Example 2 This embodiment provides a BIM-based airport engineering dynamic earthwork allocation system, including: The data acquisition module is configured to respectively acquire design elevation, material source type and initial terrain data; The model module is configured to import the initial terrain data into the BIM reality modeling tool to establish a three-dimensional site model; The zoning module is configured to zone and label the three-dimensional site model according to the design elevation and material source type; The calculation module is configured to partition and mark each area to determine the minimum comprehensive transportation distance and obtain the final earthwork allocation data.

[0044] A computer-readable storage medium stores a plurality of instructions, wherein the instructions are suitable for being loaded and executed by a processor of a terminal device, a BIM-based dynamic earthwork allocation method for airport engineering.

[0045] A terminal device includes a processor and a computer-readable storage medium, wherein the processor is used to implement various instructions; the computer-readable storage medium is used to store multiple instructions, wherein the instructions are suitable for being loaded and executed by the processor to implement a BIM-based dynamic earthwork allocation method for airport engineering.

[0046] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A BIM-based dynamic earthwork allocation method for airport engineering, characterized in that: include: Obtain the design elevation, material source type and initial terrain data respectively; Collect initial terrain data through topographic survey based on 3D scanning technology; Import the initial terrain data into the BIM real-scene modeling tool to build a three-dimensional site model; Partition and mark the 3D site model according to the design elevation and material source type; Based on zoning and marking, the minimum comprehensive transportation distance for each area is determined to obtain the final earthwork allocation data.

2. The method for dynamic earthwork allocation of airport engineering based on BIM according to claim 1 is characterized in that: The respectively obtaining of the design elevation, material source type and initial terrain data includes collecting the initial terrain data by terrain measurement based on three-dimensional scanning technology, wherein the initial terrain data is collected by non-contact measurement of the terrain using a handheld three-dimensional scanning instrument.

3. The method for dynamic earthwork allocation of airport engineering based on BIM according to claim 2 is characterized in that: The three-dimensional site model is divided and marked according to the design elevation and material source type, including determining the scope and area of ​​the excavation area and the filling area according to the established three-dimensional site model and the cut-fill balance principle, and dividing the area according to the scope and area.

4. The method for dynamic earthwork allocation of airport engineering based on BIM according to claim 3 is characterized in that: The regional division based on scope and area includes dividing the excavation area and the filling area into several areas (Wa, Wb..., Ta, Tb...) according to the type of material source; and dividing the large area into several small areas (Wa1, Wa2..., Tb1, Tb2...) according to the size of the area.

5. The method for dynamic earthwork allocation of airport engineering based on BIM according to claim 4 is characterized in that: The method of determining the minimum comprehensive transportation distance for each area based on zoning and marking includes entering the center point coordinates of each zone, the type of material source and the amount of excavation and filling into a computer, and calculating the abandoned soil cost, the utilization cost in this area, the utilization cost of long-distance transportation, the excavation cost and the filling cost based on the allocation method of the earthwork calculation table, and obtaining the final earthwork allocation data based on the calculated costs.

6. The method for dynamic earthwork allocation of airport engineering based on BIM according to claim 5 is characterized in that: The deployment method based on the earthwork calculation table calculates the cost of abandoned soil, the cost of utilization in the local area, the cost of utilization by long-distance transportation, the cost of excavation surplus and the cost of filling gap respectively, including finding the point pair of the shortest distance between the excavation point and the corresponding filling point according to the priority of earthwork utilization; calculating the earthwork site with the shortest distance associated with the filling point in the point pair, if the earthwork site cannot meet the earthwork requirements, continue to find the next point with the shortest distance in the remaining earthwork sites until the earthwork requirements are met, and calculate the transportation volume and transportation distance of each associated earthwork site; calculating the shortest distance abandoned soil and rock site point associated with the excavation point in the point pair, if the abandoned soil and rock site cannot meet the earthwork requirements, continue to find the next point with the shortest distance in the remaining earthwork sites until the earthwork requirements are met, and calculate the transportation volume and transportation distance of each associated earthwork site.

7. The method for dynamic earthwork allocation of airport engineering based on BIM according to claim 6 is characterized in that: The final earthwork allocation data obtained based on the calculated cost includes that the final earthwork allocation data is equal to the sum of the abandoned soil cost, the local utilization cost, the long-distance utilization cost, the excavation surplus cost and the filling cost.

8. A BIM-based dynamic earthwork allocation system for airport engineering, characterized in that: include: The data acquisition module is configured to respectively acquire design elevation, material source type and initial terrain data; The model module is configured to import the initial terrain data into the BIM reality modeling tool to establish a three-dimensional site model; The zoning module is configured to zone and label the three-dimensional site model according to the design elevation and material source type; The calculation module is configured to partition and mark each area to determine the minimum comprehensive transportation distance and obtain the final earthwork allocation data.

9. A computer-readable storage medium storing a plurality of instructions, characterized in that: The instructions are suitable for being loaded by a processor of a terminal device and executing the method according to claim 1 .

10. A terminal device, comprising a processor and a computer-readable storage medium, wherein the processor is used to implement each instruction; and the computer-readable storage medium is used to store multiple instructions, characterized in that: The instructions are suitable for being loaded by a processor and executing the method as claimed in claim 1 .

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