CN-121997749-A - Hydraulic engineering design earthwork measuring method based on BIM

CN121997749ACN 121997749 ACN121997749 ACN 121997749ACN-121997749-A

Abstract

The invention relates to a hydraulic engineering design earthwork measurement method based on BIM, which relates to the technical field of hydraulic engineering design and comprises the steps of generating a cross-region scheduling instruction through a high layer, performing accurate optimization in a region in parallel and performing a co-evolution process of cost feedback iteration through a bottom layer until the overall total cost converges, and obtaining an optimal cross-region scheduling and in-region allocation scheme. According to the invention, qualitative engineering constraints such as soil property matching, construction time sequence, distance economy and the like are converted into quantifiable transportation network graph theory rules such as effective edge filtering, time sequence checking, flow limitation and the like, so that the measurement and calculation process is ensured to be strictly matched with actual construction logic, the infeasible risk of a deployment scheme caused by incomplete constraint consideration in the traditional method is avoided fundamentally, and the dual improvement of measurement and calculation precision and construction suitability is realized.

Inventors

LI QINGSONG
YU DESHUI
LV HAIYAN
CHEN FANG
ZHOU BIN
ZHAO JIAJIA
LI HEPING
XU SONGTAO
ZHANG HEJU
TIAN SONGYAN

Assignees

唐河县水利局

Dates

Publication Date: 20260508
Application Date: 20260127

Claims (9)

1. The hydraulic engineering design earthwork measurement method based on BIM is characterized by comprising the following steps: Converting a physical engineering area into a computer-processable mathematical model through engineering area meshing, attribute extraction and transportation network topology construction; converting engineering constraints into graph theory rules of the transport network; dividing logic partitions according to topography/scale segments, and initializing a high-level genetic algorithm scheduler and a collaborative framework of a bottom partition parallel accurate solving engine; Generating a cross-region scheduling instruction through a high layer, performing accurate optimization in a region in parallel by a bottom layer, and performing a co-evolution process of cost feedback iteration until the overall total cost converges to obtain an optimal cross-region scheduling and intra-region allocation scheme; And decoding the optimal scheme, and integrating the optimal scheme into a global earthwork allocation total map after conflict verification to output a visual engineering result.
2. The method for measuring earthwork volume of hydraulic engineering design based on BIM according to claim 1, wherein the physical engineering area is converted into a computer-processable mathematical model by engineering area meshing, attribute extraction and transportation network topology construction, and the method specifically comprises: selecting a grid type based on engineering design precision requirements and terrain complexity; Each grid extends along the vertical direction, the upper boundary is the earthwork backfill design elevation, the lower boundary is the earthwork excavation design elevation, and a closed columnar body unit is formed and used as the minimum unit of earthwork calculation; for each columnar body unit, calculating and storing the net earth volume, the dominant earth quality type, the space coordinates and the management attributes to form a standardized database.
3. The BIM-based hydraulic engineering design earthwork measurement method of claim 2, further comprising: Abstracting all paths available for earthwork transportation into a weighted directed graph based on traffic planning in engineering construction organization design; defining nodes and edges of the graph to form a complete transport network: Node classification: a source point, namely a central point of the excavation grid unit with all net earthwork quantity being positive values or an entrance and exit of a centralized excavation area; sink points are the central points of all filling grid units with negative net earthwork quantity or the entrances and exits of concentrated filling areas (such as roadbeds and embankments); The middle point is a storage yard and a waste slag yard for temporarily stacking earthwork, a road intersection and a transportation hub; definition of edges: each side corresponds to an actual transportation road section, and the direction is consistent with the traffic direction of the road section; The weight of the edge is calculated by adopting a composite cost function, and the formula is that 。
4. The method for measuring earthwork volume of a hydraulic engineering design based on BIM according to claim 1, which is characterized by converting engineering constraint into graph theory rule of transportation network, and specifically comprises: adding an earth tag for each source point; Adding a set of allowed earths for each sink; only when the soil label of the source point belongs to the allowable soil set of the sink point, the corresponding edge is marked as a valid edge, otherwise, the edge is marked as an invalid edge; setting maximum allowable distance based on engineering experience or cost analysis ; Traversing all edges in the transport network, calculating the shortest path length from a source point to a sink point, and if the shortest path length exceeds the shortest path length All edges between the source point and the sink point are directly deleted, and an invalid transport path is removed from the network; when searching paths, the optimization algorithm selects paths with minimum weights; adding earliest digable time to each source point And latest excavation completion time ; Adding earliest backfillable time to each sink And a latest backfill completion time ; For the source point To sink point Must satisfy the following conditions: ; ; Wherein, is the source point To sink point Is time-consuming to transport.
5. The method for measuring earthwork volume for a hydraulic engineering design based on BIM according to claim 4, further comprising: regarding each partition as a super node, and calculating the total square quantity of the partition And total filling amount ; Defining partition self-balancing coefficients The amount of the excavation needed to be digested in the partition is Allowing the amount of cut-out to be adjusted across the region to be ; Similarly, the filling amount to be solved by self in the partition is The filling amount allowed to be adjusted in by the cross region is ; In the transport network, the flow limiting attribute is added to the side of the cross region, and the amount of the earth transferred by the cross region must not exceed The amount of earth transferred in the cross-region should not exceed 。
6. The method for measuring the earthwork volume of the hydraulic engineering design based on BIM according to claim 1, which is characterized by dividing logic partitions according to topography/scale segments, initializing a cooperative architecture of a high-level genetic algorithm scheduler and a bottom partition parallel accurate solving engine, and specifically comprising the following steps: partition division is performed based on the following principle: Dividing the construction standard section and the project department jurisdiction by taking the natural topography boundary as a boundary; controlling the grid unit quantity and the total soil quantity difference of each partition to be within a preset range; after the division is completed, unique identification is allocated to each partition, management attributes of the grid units are updated, and the partition to which each unit belongs is defined; designing a chromosome coding rule of a genetic algorithm: Chromosome length = partition number x partition number, each gene locus representing a slave partition Tuning to partitions Is a ratio of the earthwork amount; Constraint condition of each partition All the corresponding gene loci The sum of the values of (2) is 1.
7. The BIM-based hydraulic engineering design earthwork measurement method of claim 6, further comprising: starting an independent bottom computing engine for each partition based on the parallel computing framework, wherein the number of the engines = partition number K; receiving a cross-region scheduling instruction of a high-level scheduler, and solving a small-scale earthwork allocation optimization problem considering all fine constraints in the partition; configuring an accurate solving algorithm for a bottom layer engine, and adopting a linear programming or minimum cost flow algorithm; A communication interface between the high-level scheduler and the underlying engine is established.
8. The method for measuring earthwork volume of hydraulic engineering design based on BIM according to claim 1, wherein the method is characterized in that the optimal cross-region scheduling and intra-region allocation scheme is obtained by generating cross-region scheduling instructions by a high layer, performing intra-region precise optimization by a bottom layer parallel, and performing a co-evolution process of cost feedback iteration until global total cost converges, and specifically comprises the following steps: each underlying engine independently and in parallel performs the following operations: The method comprises the steps of determining the amount of soil to be transferred from the outside to the outside in the partition; determining constraint conditions by taking the minimum total cost of transportation in the region as an objective function; By linear programming or minimum cost flow algorithm and counting total cost of transportation in the area ; Estimating the partition according to the cross-region traffic volume in the scheduling instruction and the weight of the cross-region transport path Is a total cost of trans-regional transportation; Each underlying engine will cost the total cost in the region And total cost across regions As a total cost of the partition Feeding back to the high-level scheduler; the higher-level scheduler sums the total cost of all partitions, calculates the global total cost corresponding to the current chromosome And will As fitness value of the chromosome; and the high-level scheduler selects, crosses and mutates chromosomes in the population according to the evolution rule of the genetic algorithm to generate a next generation population.
9. The method for measuring earthwork volume of hydraulic engineering design based on BIM according to claim 1, wherein the method is characterized in that the optimal scheme is integrated into a global earthwork allocation total map after decoding and conflict verification, and visual engineering results are output, and specifically comprises the following steps: extracting a cross-region scheduling instruction corresponding to the optimal chromosome, and determining the final scheduling amount among all the partitions; extracting detailed allocation schemes in the areas of the bottom-layer engines; The global conflict verification comprises path conflict verification, time sequence conflict verification and soil quality matching conflict verification; and splicing and integrating the checked partition allocation schemes to form a global earthwork allocation total map, and defining global excavation and filling balance conditions, partition allocation and transportation relations and grid level allocation details.

Description

Hydraulic engineering design earthwork measuring method based on BIM Technical Field The invention relates to the technical field of hydraulic engineering design, in particular to a hydraulic engineering design earthwork volume measuring method based on BIM. Background In the design process of hydraulic engineering (such as long-distance water diversion engineering, reservoir dam engineering, river channel renovation engineering and the like), the measurement, calculation and allocation optimization of the earthwork quantity are one of the key links, and the precision and rationality of the earthwork quantity directly influence the engineering investment, the construction progress and the engineering quality. The traditional hydraulic engineering earthwork measuring and calculating method mainly comprises a square grid method, a triangular grid method, a section method and the like, and the method has the following defects: The traditional method is difficult to accurately represent the earthwork distribution characteristics under the complex terrain condition, and multidimensional constraint information such as soil quality, distance of transportation, construction time sequence and the like cannot be effectively integrated, so that deviation exists between a measuring and calculating result and actual construction requirements; Most only pay attention to simple balance of earthwork, and practical engineering constraints such as soil property matching (such as specific requirements of a filled area on soil property), construction time sequence (such as logic relation of excavation and backfill), transportation economy and the like are not fully considered, so that a deployment scheme is easy to be infeasible. In recent years, BIM technology has the advantages of visualization, parameterization and synergy, and is applied to hydraulic engineering earthwork measurement and calculation, but the existing BIM related method still has short plates, namely, on one hand, engineering constraint and effective association mechanism of a BIM model are not established, constraint conditions are difficult to quantitatively integrate into a measurement and calculation process, and on the other hand, an efficient parallel calculation architecture aiming at large-scale engineering is lacking, and measurement and calculation precision and calculation efficiency cannot be considered. Therefore, a method capable of integrating BIM technology, accurately integrating multidimensional engineering constraints, and efficiently solving large-scale earthwork measurement and allocation problems is needed. Disclosure of Invention The invention aims to solve the problems, and provides a hydraulic engineering design earthwork measuring method based on BIM. In order to achieve the above purpose, the present invention adopts the following technical scheme: the hydraulic engineering design earthwork volume measuring method based on BIM comprises the following steps: Converting a physical engineering area into a computer-processable mathematical model through engineering area meshing, attribute extraction and transportation network topology construction; converting engineering constraints into graph theory rules of the transport network; dividing logic partitions according to topography/scale segments, and initializing a high-level genetic algorithm scheduler and a collaborative framework of a bottom partition parallel accurate solving engine; Generating a cross-region scheduling instruction through a high layer, performing accurate optimization in a region in parallel by a bottom layer, and performing a co-evolution process of cost feedback iteration until the overall total cost converges to obtain an optimal cross-region scheduling and intra-region allocation scheme; And decoding the optimal scheme, and integrating the optimal scheme into a global earthwork allocation total map after conflict verification to output a visual engineering result. Preferably, the converting the physical engineering area into the computer-processable mathematical model through engineering area meshing, attribute extraction and transport network topology construction specifically includes: selecting a grid type based on engineering design precision requirements and terrain complexity; Each grid extends along the vertical direction, the upper boundary is the earthwork backfill design elevation, the lower boundary is the earthwork excavation design elevation, and a closed columnar body unit is formed and used as the minimum unit of earthwork calculation; for each columnar body unit, calculating and storing the net earth volume, the dominant earth quality type, the space coordinates and the management attributes to form a standardized database. Preferably, the method further comprises: Abstracting all paths available for earthwork transportation into a weighted directed graph based on traffic planning in engineering construction organization design; defining nodes