A construction project progress supervision method and system based on BIM

Abstract

The present invention discloses a construction project progress supervision method and system based on BIM, including classifying real-time construction data according to resource type, marking the outlier data of each cluster cluster as abnormal progress data after clustering, sorting each cluster cluster according to time series, judging whether the cluster cluster at the end is abnormal, if so, marking the corresponding cluster cluster as abnormal progress data, and continuing to check the preceding cluster cluster until all abnormal progress data are screened out; determining the deviation between the actual progress and the planned progress based on the abnormal progress data, if the completion is ahead of schedule, evaluating the construction quality to match the first processing strategy; if the completion is delayed, matching the second processing strategy according to the delay level. The present invention can quickly and accurately calculate the deviation between the actual progress and the planned progress by clustering massive construction data, and can dynamically optimize the construction plan by matching different processing strategies with different deviation types, taking into account both construction efficiency and construction quality, and enhancing the energy efficiency of construction management.

Description

Technical Field

[0001] The present invention relates to the technical field of BIM, and in particular to a method and system for supervising the progress of a construction project based on BIM. Background Art

[0002] Construction progress monitoring is an important part of construction supervision. There are still many problems in the current construction progress supervision: for example, it relies too much on offline documents and isolated data systems, resulting in poor information transmission and the inability to update the project status in real time. The collected construction data is massive and lacks effective processing methods, resulting in inaccurate real-time progress judgments, which in turn affects the dynamic update of the construction plan. When deviations in the construction progress are detected, due to the lack of effective integration between construction planning, execution and monitoring, progress control and quality management become independent processes, making it difficult to form a closed loop, and unable to provide effective solutions to progress problems, and thus unable to take into account both construction quality and construction progress. Therefore, there is an urgent need in this field to provide an effective method for supervising the progress of construction projects that can improve the energy efficiency of construction operations and supervision processes. Summary of the invention

[0003] In order to solve at least one of the technical problems mentioned above, the present invention provides a construction project progress supervision method and system based on BIM.

[0004] In a first aspect, the present invention provides a method for supervising construction project progress based on BIM, the method comprising:

[0005] Build a BIM model for the construction project and determine the construction planning scheme based on the BIM model;

[0006] Collect real-time construction data in the current construction phase, classify the real-time construction data according to resource types, perform clustering on the classified data, and generate multiple clusters;

[0007] Mark the outlier data of each cluster as abnormal progress data, sort the clusters according to the time series generated by the data, and determine whether the cluster data at the end of the sequence is abnormal. If there is an abnormality, mark the corresponding cluster as abnormal progress data, and continue to check the previous clusters until all abnormal progress data are screened out;

[0008] Based on the abnormal progress data, the deviation between the actual construction progress and the planned progress in the construction plan is determined. When the deviation type is early completion, the construction quality of the current link is evaluated, and the first processing strategy is matched according to the evaluation result; when the deviation type is delayed completion, the delay level is divided and the second processing strategy is matched according to the delay level.

[0009] Preferably, the evaluating the construction quality of the current link includes:

[0010]

[0011] In the formula, QI represents the construction quality index, w1, w2, w2, w4 represent weight factors, Q c Indicates the material quality, X o , X d Represent the total number of process units and the number of process defects, Y d represents the number of safety accidents, T a Indicates the total working time, H t , H a Represent the target waste discharge and actual waste discharge respectively; ΔE i , Δσ i They represent the electric field distribution and tensile strength difference of the i-th material used, and there are n kinds of materials in total; σ b Indicates the reference value of tensile strength.

[0012] Preferably, matching the first processing strategy according to the evaluation result includes:

[0013] Determine whether the construction quality meets the preset conditions;

[0014] If yes, mark the construction planning scheme corresponding to the current link as the template scheme, calculate the correlation between the current link and other construction links, select the construction links with correlation greater than the second preset value as the links to be adjusted, and update the construction planning scheme of the links to be adjusted according to the template scheme;

[0015] If not, determine the influencing factors affecting the construction quality according to the actual construction data, and match the first processing strategy according to different influencing factors.

[0016] Preferably, the calculation of the correlation between the current link and other construction links includes:

[0017] If the current link and other construction links are serial construction links, the correlation calculation formula is as follows:

[0018]

[0019] In the formula, C s Indicates the correlation between the current link and other construction links as serial links, T o Indicates the time overlap between the current link and the next link, T c Indicates the planned construction time of the current link; R o Indicates the overlapping part of resources between the current link and the next link, R a It represents the total number of resources required for the current link; μ represents the importance index of resource overlap relative to time overlap, satisfying 0<μ<1.

[0020] Preferably, the calculating of the correlation between the current link and other construction links further includes:

[0021] If the current link and other construction links are parallel construction links, the correlation calculation formula is as follows:

[0022]

[0023] In the formula, C p It indicates the correlation degree between the current link and other construction links as parallel links, e is the base of natural logarithm, α, β, γ, represents the adjustment coefficient, S D Indicates the spatial layout similarity between the current link and other construction links; S R It indicates the construction risk level of the current link, ∈ is a constant, and its value is 0<∈<0.01.

[0024] Preferably, the determining, based on the abnormal progress data, the deviation between the actual construction progress and the planned progress in the construction planning scheme includes:

[0025] Filter out the actual construction images collected at the construction site from the abnormal progress data, and perform denoising and grayscale processing on the actual construction images;

[0026] Extract features from the processed image, compare the extracted features with the standard image features when the current link is completed, and determine the feature matching points through the feature matching algorithm;

[0027] Calculate the ratio of the number of feature matching points to the total number of features in the standard image to obtain the construction completion rate of the current link and the actual construction time required to achieve the construction completion rate;

[0028] Determine the expected completion rate under the actual construction time, and determine the deviation between the actual construction progress and the planned progress based on the construction completion rate and the expected completion rate.

[0029] Preferably, a SIFT feature extraction algorithm is used to extract features from the processed image.

[0030] In a second aspect, the present invention provides a construction project progress monitoring system based on BIM, the system comprising:

[0031] The planning scheme determination unit is used to construct a BIM model of the construction project and determine the construction planning scheme based on the BIM model;

[0032] The construction data clustering unit is used to collect real-time construction data in the current construction stage, classify the real-time construction data according to resource types, perform clustering processing on the classified data, and generate multiple clusters;

[0033] The abnormal data screening unit is used to mark the outlier data of each cluster as abnormal progress data, sort the clusters according to the time series of data generation, and determine whether the cluster data at the end of the sequence is abnormal. If there is an abnormality, mark the corresponding cluster as abnormal progress data, and continue to check the previous cluster until all the abnormal progress data are screened out;

[0034] The progress deviation processing unit is used to determine the deviation between the actual construction progress and the planned progress in the construction plan based on the abnormal progress data. When the deviation type is early completion, the construction quality of the current link is evaluated and the first processing strategy is matched according to the evaluation result; when the deviation type is delayed completion, the delay level is divided and the second processing strategy is matched according to the delay level.

[0035] In a third aspect, the present invention further provides an electronic device comprising a processor and a memory, wherein the memory is used to store computer program code, and the computer program code comprises computer instructions. When the processor executes the computer instructions, the electronic device executes the method as described in the first aspect above and any possible implementation thereof.

[0036] In a fourth aspect, the present invention further provides a computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, wherein the computer program includes program instructions, and when the program instructions are executed by a processor of an electronic device, the processor executes the method as described in the first aspect above and any possible implementation thereof.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1) Through the creation of BIM models, the present invention can discover and resolve potential conflicts in the design stage, reduce on-site change orders and rework, and improve the rationality of construction plan planning. By acquiring real-time construction data, it is possible to timely understand the on-site progress, quickly respond to deviations, optimize construction planning, avoid the accumulation of problems caused by information lag, and thus improve construction efficiency and accuracy.

[0039] 2) After collecting massive amounts of real-time construction data, the real-time construction data is classified according to resource type, and the classified data is clustered to generate multiple clusters; the outlier data of each cluster is marked as abnormal progress data, and each cluster is sorted according to the time series generated by the data, and it is determined whether the cluster data at the end of the sequence is abnormal. When an abnormality exists, the corresponding cluster is marked as abnormal progress data, and then the previous cluster is checked in the same way until all the abnormal progress data are screened out; if there is no abnormality, there is no need to check the data of the previous construction stage. By considering the construction data of the time series, the data with abnormal construction progress can be quickly identified, which greatly reduces the amount of calculation and avoids the problem of easy errors in calculation due to huge data.

[0040] 3) Based on accurate abnormal progress data screening, the deviation between the actual construction progress and the planned progress in the construction planning scheme can be calculated quickly and accurately. By classifying the deviation types, when the deviation type is determined to be early completion, the construction quality of the current link is evaluated to determine whether the construction quality meets the preset conditions; if so, the construction planning scheme corresponding to the current link is marked as a template scheme, the correlation between the current link and other construction links is calculated, and the construction links with correlation greater than the preset threshold are screened out as links to be adjusted, and the construction planning scheme of the links to be adjusted is updated according to the template scheme; if not, the influencing factors that the construction quality does not meet the preset conditions are determined according to the actual construction data, and the first processing strategy is matched according to the influencing factors; when the deviation type is determined to be delayed completion, the delay level is divided and the second processing strategy is matched according to the delay level. In this way, different response strategies can be provided for different deviation types, which can not only screen out the template scheme to dynamically optimize the construction planning scheme and improve the efficiency and quality of later construction, but also investigate the reasons for the unqualified construction quality and progress of the current link, and provide effective processing strategies, thereby greatly improving the efficiency of construction supervision.

[0041] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background technology, the drawings required for use in the embodiments of the present invention or the background technology will be described below.

[0043] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and are used to illustrate the technical solutions of the present disclosure together with the specification.

[0044] Figure 1 A flowchart of a method for monitoring construction project progress based on BIM provided by an embodiment of the present invention;

[0045] Figure 2 A certain embodiment of the present invention provides Figure 1 A schematic flow chart of the sub-steps of step S40;

[0046] Figure 3 Another embodiment of the present invention provides Figure 1 A schematic flow chart of the sub-steps of step S40;

[0047] Figure 4 A structural schematic diagram of a construction project progress monitoring system based on BIM provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] The current construction project progress supervision method still has problems such as information islands, large progress assessment errors caused by massive real-time data, inability to take into account both construction quality and efficiency, and low supervision efficiency. To this end, the present invention provides a supervision method that can quickly and accurately calculate the deviation between the actual progress and the planned progress, and adopt different scheme optimization strategies and processing mechanisms according to the deviation type, so as to take into account both construction quality and efficiency and greatly improve the construction supervision efficiency.

[0051] See also Figure 1 , Figure 1 A flow chart of a method for monitoring construction project progress based on BIM provided by an embodiment of the present invention. Figure 1 As shown, the method includes:

[0052] S10. Build a BIM model for the construction project and determine the construction planning plan based on the BIM model.

[0053] When building a BIM model, you first need to obtain project information and clarify the project's goals, scale, budget, and schedule. Then use appropriate BIM software to build the BIM model. In the design phase, use BIM tools to create a three-dimensional model, including preliminary designs of the building, structure, and mechanical and electrical systems (MEP). Then, through information entry, enter detailed component properties such as material type, size, cost, and performance data into the model to complete the model construction.

[0054] When determining the construction plan based on the constructed model, it includes using BIM to simulate the construction process to plan the construction sequence and schedule. Furthermore, the material and labor requirements are calculated based on the model, and the procurement and scheduling plans are formulated to complete the resource planning process. Finally, the bill of quantities is automatically generated for cost estimation and budget control. In this way, a complete construction plan can be obtained.

[0055] Therefore, through the creation of BIM models, potential conflicts can be discovered and resolved in the design stage, reducing on-site change orders and rework, and improving the rationality of construction plan planning. By obtaining real-time construction data, it is possible to timely understand the progress of the site, quickly respond to deviations, optimize construction planning, avoid the accumulation of problems caused by information lag, and thus improve construction efficiency and accuracy.

[0056] S20, collecting real-time construction data in the current construction stage, classifying the real-time construction data according to resource types, performing clustering processing on the classified data, and generating multiple clusters.

[0057] When collecting real-time construction data, various data on the construction site are collected through Internet of Things (IoT) devices including sensors, smart devices (such as RFID, NFC, GPS, cameras), drones, etc. The types of various data include but are not limited to work progress, material usage, equipment operating status, personnel location and health status, environmental factors, etc. In addition, data can also be collected and uploaded through applications on mobile devices used by workers and managers, such as work logs, checklists, problem reports, etc. After the data is collected, it is transmitted to the server or cloud platform through wireless network technologies such as Wi-Fi, 4G / 5G, LoRaWAN, etc., and encryption and security are ensured during the data transmission process to prevent data leakage or malicious interference. After the data is transmitted to the server or cloud platform, it will be stored for remote access and management. When the actual construction progress needs to be calculated, it is only necessary to call the collected real-time construction data for calculation.

[0058] Since the collected data is massive, this embodiment needs to classify the data and then perform clustering processing to quickly filter out abnormal progress data. Specifically, the data is first cleaned, including missing value supplementation and denoising, and then the unstructured data is converted into structured data, such as converting video and image data into labels of key events, etc., and then the associated data related to the progress is considered. For example, due to abnormal progress, various operation data and time data in the construction process should be focused on. Due to the wide variety of data, in order to improve the quality of clustering, the data is first divided into different categories according to resource types, such as manpower, materials, equipment, and duration. Preferably, a decision tree or logistic regression algorithm can be used for fast and accurate classification.

[0059] After classification, each group of data is clustered separately, and the DBSCAN algorithm is preferred for clustering. This algorithm is a density-based spatial clustering algorithm that can find clusters of any shape and identify outliers. By determining the distance threshold and neighborhood radius, outliers can be quickly identified.

[0060] S30, marking the outlier data of each cluster as abnormal progress data, sorting each cluster according to the time series of data generation, judging whether the cluster data at the end of the sequence is abnormal, and if there is an abnormality, marking the corresponding cluster as abnormal progress data, and continuing to check the previous cluster until all the abnormal progress data are screened out;

[0061] In this embodiment, the outlier data of each cluster is first marked as abnormal progress data. For the remaining multiple cluster data with concentrated density, the clusters are first divided based on the time series generated by the data. For example, there are 3 clusters now. Under the current construction link, the construction order of cluster A is earlier than that of cluster B, and the construction order of cluster B is earlier than that of cluster C. At this time, the end of the sequence is cluster C. At this time, a check is first performed based on cluster C to calculate whether the progress is abnormal. If no abnormality occurs, it means that the actual progress of the construction task chain composed of ABC as a whole meets the planning requirements, and there is no need to check the previous A and B cluster data. On the contrary, if C is abnormal, it will be marked as abnormal progress data first, and then B will be checked in the same way, that is, from the end of the sequence to the beginning of the sequence, until all abnormal progress data are screened out.

[0062] In this way, by considering the construction data in time series, it is possible to quickly identify data with abnormal construction progress, greatly reduce the amount of calculation, and avoid the problem of easy errors in calculation operations due to huge data, thereby improving the accuracy of the progress deviation calculation results.

[0063] S40. Based on the abnormal progress data, determine the deviation between the actual construction progress and the planned progress in the construction plan. When the deviation type is early completion, evaluate the construction quality of the current link and match the first processing strategy according to the evaluation result; when the deviation type is delayed completion, divide the delay level and match the second processing strategy according to the delay level.

[0064] See also Figure 2 In one embodiment, the step of determining the deviation between the actual construction progress and the planned progress in the construction planning scheme based on the abnormal progress data includes:

[0065] S401. Filter out actual construction images collected at the construction site from the abnormal progress data, and perform denoising and grayscale processing on the actual construction images.

[0066] Image processing techniques are used to remove noise from images, such as using Gaussian filters or median filters, to improve the accuracy of subsequent feature extraction. By converting color images into grayscale images, the amount of data is reduced and the feature extraction process is simplified, thus ensuring the quality of the extracted features.

[0067] S402: extract features from the processed image, compare the extracted features with the standard image features when the current link is completed, and determine feature matching points through a feature matching algorithm.

[0068] Feature extraction: Use image processing algorithms such as SIFT, SURF, ORB, etc. to extract key feature points from the processed image. These features can be corners, edges, texture patterns, etc.

[0069] Preferably, the SIFT feature extraction algorithm is used here to extract features from the processed image. Since the SIFT feature extraction algorithm has multiple advantages such as scale invariance, rotation invariance and brightness invariance, it can more effectively extract features during the feature extraction process and improve the accuracy of feature matching.

[0070] Feature matching: Match the extracted features with known standard image features. The standard image is a reference image taken when the construction phase is completed.

[0071] Matching point determination: Use a feature matching algorithm, preferably the FLANN algorithm, to find corresponding points between the two images.

[0072] S403, calculating the ratio of the number of feature matching points to the total number of features of the standard image, obtaining the construction completion rate of the current link, and obtaining the actual construction time required to achieve the construction completion rate.

[0073] The degree of completion of the construction is estimated by dividing the number of matching points by the total number of feature points in the standard image. For example, if the standard image has 100 feature points and there are 80 matching points in the actual image, the completion rate is 80%. The time from the start of construction to the current moment, when the completion rate is 80%, is recorded as the actual construction time.

[0074] S404: Determine the expected completion rate under the actual construction duration, and determine the deviation between the actual construction progress and the planned progress based on the construction completion rate and the expected completion rate.

[0075] According to the construction planning progress in the planning scheme, determine the expected completion rate that should be achieved within the current actual construction time. The actual construction progress is obtained by calculating the ratio of the construction completion rate to the expected completion rate. For example, if it is planned to be completed 100% in 10 days, the expected completion rate in 5 days is 50%, and the actual completion rate in 5 days is 80%, then the ratio of the construction completion rate to the expected completion rate is 80% / 50%=1.6, and 1.6 is the actual construction progress. Since this value is greater than 1, it means that it is completed ahead of schedule.

[0076] Therefore, this embodiment is based on image analysis, through feature point extraction and feature matching, and can accurately and quickly determine the deviation between the actual construction progress and the planned progress in the construction planning scheme, so as to more effectively divide the progress deviation and assist in controlling the construction progress and processing strategy.

[0077] After the progress deviation is calculated, the deviation type will be further divided into early completion and delayed completion. Specifically, if the time difference of the progress is a positive number, that is, the actual completion date is later than the planned completion date, then the construction progress is delayed. If the time difference is a negative number, that is, the actual completion date is earlier than the planned completion date, then the construction progress is early completion.

[0078] When the deviation type is early completion, the construction quality of the current link is evaluated, and the first processing strategy is matched according to the evaluation result. It is understandable that since the early completion may be achieved at the expense of construction quality, the construction quality should be evaluated first to analyze the reasons for the early completion.

[0079] In one embodiment, the evaluating the construction quality of the current link includes:

[0080]

[0081] In the formula, QI represents the construction quality index, w1, w2, w3, and w4 represent weight factors, Q c Indicates the material quality, X o , X d Represent the total number of process units and the number of process defects, Y d represents the number of safety accidents, Ta Indicates the total working time, H t , H a Represent the target waste discharge and actual waste discharge respectively; ΔE i , Δσ i They represent the electric field distribution and tensile strength difference of the i-th material used, and there are n kinds of materials in total; σ b Indicates the reference value of tensile strength.

[0082] When evaluating the construction quality of the current link, this embodiment takes into account the material quality, process defect rate, accident rate and waste emission rate, making the evaluation results more comprehensive from multiple dimensions and covering the main quality influencing factors in the construction process. When evaluating the material quality, the electric field distribution and tensile strength difference are taken into account. The quantitative evaluation of material properties helps to ensure the applicability and performance of the selected materials, thereby greatly improving the accuracy of the construction quality evaluation results.

[0083] See also Figure 3 Further, matching the first processing strategy according to the evaluation result includes:

[0084] S405: Determine whether the construction quality meets the preset conditions.

[0085] After obtaining the evaluation results of the construction quality, it is judged whether the construction quality meets the preset conditions, that is, the QI index is compared with a set safety threshold. If it exceeds the preset condition, the construction quality is considered to be passed, otherwise it is considered to be unsatisfactory.

[0086] S4051. If yes, mark the construction planning scheme corresponding to the current link as a template scheme, calculate the correlation between the current link and other construction links, select the construction links with a correlation greater than a second preset value as links to be adjusted, and update the construction planning scheme of the links to be adjusted according to the template scheme.

[0087] Preferably, the calculation of the correlation between the current link and other construction links includes:

[0088] If the current link and other construction links are serial construction links, the correlation calculation formula is as follows:

[0089]

[0090] In the formula, C s Indicates the correlation between the current link and other construction links as serial links, T o Indicates the time overlap between the current link and the next link, T c Indicates the planned construction time of the current link; R o Indicates the overlapping part of resources between the current link and the next link, R aIt represents the total number of resources required for the current link; μ represents the importance index of resource overlap relative to time overlap, satisfying 0<μ<1.

[0091] If the current link and other construction links are parallel construction links, the correlation calculation formula is as follows:

[0092]

[0093] In the formula, C p It indicates the correlation degree between the current link and other construction links as parallel links, e is the base of natural logarithm, α, β, γ, represents the adjustment coefficient, S D Indicates the spatial layout similarity between the current link and other construction links; S R It indicates the construction risk level of the current link, ∈ is a constant, and its value is 0<∈<0.01.

[0094] The serial construction link means that the construction must be executed in a time sequence, while the parallel construction link means that the two links can be processed in parallel. For example, in construction work, the three links of foundation construction, concrete pouring and pipeline installation are serial links, and the construction must be carried out in this order. The simultaneous construction of multiple buildings, the construction of different floors, the simultaneous operation of different professional trades, and the simultaneous installation of multiple production lines can all be processed in parallel, thereby speeding up construction efficiency. Since different construction associations will affect the corresponding correlation degree, this embodiment calculates the correlation degree for the serial construction link and the parallel construction link respectively.

[0095] Specifically, if the current link and other construction links are serial construction links, the main impact of the correlation depends on the time relationship. Therefore, the two factors of time overlap and resource overlap are considered. By introducing the importance index μ of resource overlap relative to time overlap, the impact of resource overlap on the correlation of construction links can be highlighted. This is in line with the actual situation, because when resources are limited, resource overlap may have a significant impact on the construction progress.

[0096] Furthermore, if the current link and other construction links are parallel construction links, in addition to considering the two factors of time overlap and resource overlap, the spatial layout similarity and construction risk level are also considered in the calculation of the correlation of the parallel construction links, which increases the complexity and practicality of the model. The spatial layout similarity takes into account the existence of similar physical space implementation in the parallel process. For example, the construction plan for the first floor of Building B can be the same as the construction plan for the first floor of Building A. By considering the correlation, the linkage update of the planning scheme can be achieved.

[0097] In the process of calculating the correlation, exponential and logarithmic functions are used, which can better reflect the nonlinear influence. For example, the square term of the construction risk level emphasizes the greater impact of high-risk construction links on the correlation. At the same time, multiple adjustment coefficients α, β, γ, The model can be fine-tuned according to the characteristics and needs of specific projects to more accurately reflect the relative importance of different factors. In addition, a constant ∈ is added to the function, which is a small positive number. The introduction of this value solves the problem that the logarithmic function is undefined when the overlapping time or resources are zero, ensuring the stability and continuity of the calculation.

[0098] After calculating the correlation, the construction links with correlation greater than the preset threshold will be selected as the links to be adjusted, and the construction planning scheme of the links to be adjusted will be updated according to the template scheme. For example, in the original parallel links, the construction planning scheme and planning progress of the top floor construction link of Building A and the top floor construction link of Building B are the same. After the current link evaluation, it is considered that the construction quality of the top floor of Building A is qualified, and the construction progress is ahead of the planned progress. At this time, the plan of Building B can be updated according to the plan of A as the template plan, and even the plans of other C, D, E... building construction projects of the same period can be realized. In this way, the planning scheme can be dynamically updated.

[0099] Therefore, this embodiment adopts different correlation calculation methods for the relationships between different construction links and accurately quantifies the correlation between construction links, so as to better identify critical paths, optimize resource allocation, reduce potential delays and cost overruns, and improve the overall execution efficiency and success rate of the project.

[0100] S4052: If not, determine the factors affecting the construction quality according to the actual construction data, and match the first processing strategy according to different influencing factors.

[0101] On the one hand, the influencing factor may be the problem of personnel allocation. There may be too few excellent or experienced workers allocated, which leads to quality problems in the construction process. At this time, when matching the first processing strategy, it is necessary to pay attention to the personnel allocation plan. For example, other more experienced personnel can be dispatched to ensure the quality of this construction link.

[0102] On the other hand, if there is no problem with personnel allocation, then the influencing factor may be personnel operation problems. At this time, the construction data can be called to monitor the construction work of this link to determine whether there is a problem of employee laziness. If so, the corresponding construction personnel can be criticized or even punished.

[0103] The above embodiment is a processing strategy when the deviation type is early completion. In one embodiment, when the deviation type is delayed completion, the delay level is divided and the second processing strategy is matched according to the delay level.

[0104] In one embodiment, the types of factors to be checked may be determined according to the postponement level, including:

[0105] When the extension level is level one, the influencing factors are determined to be management factors;

[0106] When the extension level is level 2, the influencing factors are determined to be management factors, program design factors, and program execution factors;

[0107] When the extension level is level 3, the influencing factors are determined to be management factors, program design factors, program execution factors, and environmental factors;

[0108] The extension periods for the first-level extension, second-level extension and third-level extension increase respectively.

[0109] Understandably, factors that contribute to delays may include:

[0110] 1) Environmental factors:

[0111] Weather conditions: Severe weather (such as rainy season, typhoons, extreme temperatures) may make construction impossible.

[0112] Regulatory changes: The introduction of new regulations or standards may require additional approvals or design changes.

[0113] Market Fluctuations: Sudden increases in material prices can affect budgets and purchasing plans.

[0114] 2) Scheme design factors:

[0115] Design Changes: Design modifications or additional requirements may require additional time and resources.

[0116] Resource Allocation: Insufficient labor, equipment failure, or material shortages can directly slow down construction.

[0117] 3) Project implementation factors:

[0118] Technical problems: technical difficulties encountered during the construction process, such as unexpected complexity of geological conditions.

[0119] Quality Control: Strict enforcement of quality standards may result in rework or extended inspection time.

[0120] 4) Management factors:

[0121] Poor planning: Unrealistic or overly optimistic initial plans.

[0122] Miscommunication: Delays or misunderstandings in the transfer of information between teams.

[0123] Risk Management: Failure to identify and respond to potential risks in a timely manner.

[0124] For ease of understanding, assume that the first-level extension, second-level extension, and third-level extension are respectively slight extension (less than 1 week), medium extension (1 week to 1 month), and third-level extension (more than 1 month). Then focus on some influencing factors to quickly identify the cause of the extension and match the second processing strategy, as follows:

[0125] 1) Minor delay:

[0126] Type of walkthrough: Check management factors such as communication and plan execution.

[0127] Handling strategies: Strengthen daily supervision, optimize task allocation, and make short-term plan adjustments.

[0128] 2) Medium extension:

[0129] Types of investigation: In addition to management factors, the impact of program design factors and program execution factors also need to be considered.

[0130] Treatment strategy: Re-evaluate resource needs, speed up procurement processes, consider overtime or introduce additional labor.

[0131] 3) Severe delays:

[0132] Type of investigation: Comprehensive review of all secondary influencing factors.

[0133] Treatment strategies: Conduct root cause analysis, revise project plans, strengthen risk management, establish early warning mechanisms, etc.

[0134] Therefore, this embodiment divides the deviation types. When the deviation type is determined to be early completion, the construction quality of the current link is evaluated to determine whether the construction quality meets the preset conditions; if so, the construction planning scheme corresponding to the current link is marked as a template scheme, the correlation between the current link and other construction links is calculated, and the construction links with correlation greater than the preset threshold are screened out as links to be adjusted, and the construction planning scheme of the links to be adjusted is updated according to the template scheme; if not, the influencing factors that the construction quality does not meet the preset conditions are determined according to the actual construction data, and the first processing strategy is matched according to the influencing factors; when the deviation type is determined to be delayed completion, the delay level is divided and the second processing strategy is matched according to the delay level. In this way, different response strategies can be provided for different deviation types, which can not only screen out template schemes to dynamically optimize construction planning schemes and improve the efficiency and quality of later construction, but also investigate the reasons for the unqualified construction quality and progress of the current link, and provide effective processing strategies, thereby greatly improving the efficiency of construction supervision.

[0135] See also Figure 4 In one embodiment, a BIM-based construction project progress monitoring system is also provided, the system comprising:

[0136] The planning scheme determining unit 100 is used to construct a BIM model of the construction project and determine the construction planning scheme based on the BIM model;

[0137] The construction data clustering unit 200 is used to collect real-time construction data in the current construction stage, classify the real-time construction data according to resource types, perform clustering processing on the classified data, and generate multiple clusters;

[0138] The abnormal data screening unit 300 is used to mark the outlier data of each cluster as abnormal progress data, sort the clusters according to the time series of data generation, determine whether the cluster data at the end of the sequence is abnormal, and when there is an abnormality, mark the corresponding cluster as abnormal progress data, and continue to check the previous clusters until all the abnormal progress data are screened out;

[0139] The progress deviation processing unit 400 is used to determine the deviation between the actual construction progress and the planned progress in the construction planning scheme based on the abnormal progress data. When the deviation type is early completion, the construction quality of the current link is evaluated and the first processing strategy is matched according to the evaluation result; when the deviation type is delayed completion, the delay level is divided and the second processing strategy is matched according to the delay level.

[0140] It can be understood that the functions or modules included in the system provided in this embodiment can be used to execute the method described in the above method embodiment. Its specific implementation can refer to the description of the above method embodiment. For the sake of brevity, it will not be repeated here.

[0141] The present invention also provides an electronic device, including a processor and a memory, wherein the memory is used to store computer program code, and the computer program code includes computer instructions. When the processor executes the computer instructions, the electronic device executes the method described in any one of the above embodiments.

[0142] The present invention also provides a computer-readable storage medium, in which a computer program is stored. The computer program includes program instructions. When the program instructions are executed by a processor of an electronic device, the processor executes the method described in any of the above embodiments.

[0143] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0144] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. Those skilled in the art can also clearly understand that the descriptions of the various embodiments of the present invention have different focuses. For the convenience and brevity of description, the same or similar parts may not be repeated in different embodiments. Therefore, for parts not described or not described in detail in a certain embodiment, refer to the records of other embodiments.

Claims

1. A construction project progress supervision method based on BIM, characterized in that: The method comprises: Build a BIM model for the construction project and determine the construction planning scheme based on the BIM model; Collect real-time construction data in the current construction phase, classify the real-time construction data according to resource types, perform clustering on the classified data, and generate multiple clusters; Mark the outlier data of each cluster as abnormal progress data, sort the clusters according to the time series generated by the data, and determine whether the cluster data at the end of the sequence is abnormal. If there is an abnormality, mark the corresponding cluster as abnormal progress data, and continue to check the previous clusters until all abnormal progress data are screened out; Based on the abnormal progress data, determine the deviation between the actual construction progress and the planned progress in the construction plan. When the deviation type is early completion, evaluate the construction quality of the current link and match the first processing strategy according to the evaluation result; The matching of the first processing strategy according to the evaluation result includes: Determine whether the construction quality meets the preset conditions; If yes, mark the construction planning scheme corresponding to the current link as the template scheme, calculate the correlation between the current link and other construction links, select the construction links with correlation greater than the second preset value as the links to be adjusted, and update the construction planning scheme of the links to be adjusted according to the template scheme; If not, determine the factors affecting the construction quality according to the actual construction data, and match the first processing strategy according to different influencing factors; The calculation of the correlation between the current link and other construction links includes: If the current link and other construction links are serial construction links, the correlation calculation formula is as follows: In the formula, C s Indicates the correlation between the current link and other construction links as serial links, T o Indicates the time overlap between the current link and the next link, T c Indicates the planned construction time of the current link; R o Indicates the overlapping part of resources between the current link and the next link, R a Indicates the total number of resources required for the current link; μ represents the importance index of resource overlap relative to time overlap, satisfying 0<μ<1; If the current link and other construction links are parallel construction links, the correlation calculation formula is as follows: In the formula, C p It indicates the correlation degree between the current link and other construction links as parallel links, e is the base of natural logarithm, α, β, γ, represents the adjustment coefficient, S D Indicates the spatial layout similarity between the current link and other construction links; S R Indicates the construction risk level of the current link, ∈ is a constant, and its value is 0<∈<0.01; When the deviation type is delayed completion, the delay level is divided and the second processing strategy is matched according to the delay level.

2. The method for monitoring construction progress based on BIM according to claim 1 is characterized in that: The assessment of the construction quality of the current link includes: In the formula, QI represents the construction quality index, w1, w2, w3, and w4 represent weight factors, Q c Indicates the material quality, X o , X d Represent the total number of process units and the number of process defects, Y d represents the number of safety accidents, T a Indicates the total working time, H t , H a Represent the target waste discharge and actual waste discharge respectively; ΔE i , Δσ i They represent the electric field distribution and tensile strength difference of the i-th material used, and there are n kinds of materials in total; σ b Indicates the reference value of tensile strength.

3. The construction project progress monitoring method based on BIM according to claim 1 is characterized in that: The step of determining the deviation between the actual construction progress and the planned progress in the construction planning scheme based on the abnormal progress data includes: Filter out the actual construction images collected at the construction site from the abnormal progress data, and perform denoising and grayscale processing on the actual construction images; Extract features from the processed image, compare the extracted features with the standard image features when the current link is completed, and determine the feature matching points through the feature matching algorithm; Calculate the ratio of the number of feature matching points to the total number of features in the standard image to obtain the construction completion rate of the current link and the actual construction time required to achieve the construction completion rate; Determine the expected completion rate under the actual construction time, and determine the deviation between the actual construction progress and the planned progress based on the construction completion rate and the expected completion rate.

4. The method for monitoring construction progress based on BIM according to claim 3 is characterized in that: The SIFT feature extraction algorithm is used to extract features from the processed image.

5. A BIM-based construction project progress monitoring system, characterized in that: The system comprises: The planning scheme determination unit is used to construct a BIM model of the construction project and determine the construction planning scheme based on the BIM model; The construction data clustering unit is used to collect real-time construction data in the current construction stage, classify the real-time construction data according to resource types, perform clustering processing on the classified data, and generate multiple clusters; The abnormal data screening unit is used to mark the outlier data of each cluster as abnormal progress data, sort the clusters according to the time series of data generation, and determine whether the cluster data at the end of the sequence is abnormal. If there is an abnormality, mark the corresponding cluster as abnormal progress data, and continue to check the previous cluster until all the abnormal progress data are screened out; A progress deviation processing unit is used to determine the deviation between the actual construction progress and the planned progress in the construction plan based on the abnormal progress data. When the deviation type is early completion, the construction quality of the current link is evaluated, and the first processing strategy is matched according to the evaluation result; The matching of the first processing strategy according to the evaluation result includes: Determine whether the construction quality meets the preset conditions; If yes, mark the construction planning scheme corresponding to the current link as the template scheme, calculate the correlation between the current link and other construction links, select the construction links with correlation greater than the second preset value as the links to be adjusted, and update the construction planning scheme of the links to be adjusted according to the template scheme; If not, determine the factors affecting the construction quality according to the actual construction data, and match the first processing strategy according to different influencing factors; The calculation of the correlation between the current link and other construction links includes: If the current link and other construction links are serial construction links, the correlation calculation formula is as follows: In the formula, C s Indicates the correlation between the current link and other construction links as serial links, T o Indicates the time overlap between the current link and the next link, T c Indicates the planned construction time of the current link; R o Indicates the overlapping part of resources between the current link and the next link, R a Indicates the total number of resources required for the current link; μ represents the importance index of resource overlap relative to time overlap, satisfying 0<μ<1; If the current link and other construction links are parallel construction links, the correlation calculation formula is as follows: In the formula, C p It indicates the correlation degree between the current link and other construction links as parallel links, e is the base of natural logarithm, α, β, γ, represents the adjustment coefficient, S D Indicates the spatial layout similarity between the current link and other construction links; S R Indicates the construction risk level of the current link, ∈ is a constant, and its value is 0<∈<0.01; When the deviation type is delayed completion, the delay level is divided and the second processing strategy is matched according to the delay level.

6. An electronic device, characterized in that: include: A processor and a memory, wherein the memory is used to store computer program code, wherein the computer program code includes computer instructions. When the processor executes the computer instructions, the electronic device executes the BIM-based construction project progress supervision method as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, which includes program instructions. When the program instructions are executed by a processor of an electronic device, the processor executes the BIM-based construction project progress supervision method as described in any one of claims 1 to 4.

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