Intelligent construction management system and method based on BIM technology

Abstract

The invention belongs to the technical field of construction management, and particularly discloses and provides an intelligent construction management system and method based on a BIM technology, and the system comprises a BIM building model importing module, a building resource data analysis module, an allocation adjustment judgment module, a resource allocation prediction module and a resource allocation execution module. According to the invention, the progress plan data of the current construction project is extracted from the BIM building model, resource allocation analysis and resource allocation adjustment judgment are carried out, and the confirmation resource allocation scheme of the next construction stage is predicted according to the judgment result, so that the problem of insufficient attention to construction resource management at present is effectively solved; according to the technical scheme, the unbalanced phenomenon that part of equipment is idle and other equipment is overused is avoided, the construction efficiency is guaranteed, meanwhile, construction content similarity analysis is carried out in combination with the constructed stage, correlation analysis among all construction links is achieved, and construction management is more flexible.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction management, and in particular, relates to an intelligent construction management system and method based on BIM technology. Background Art

[0002] In recent years, the construction industry has developed rapidly, but the management of the construction stage is still relatively extensive and the level of management informationization is low. Construction companies have low profitability and unbalanced development, and need to improve the refinement of construction management to enhance corporate competitiveness and profit margins. BIM technology provides new ideas and methods to solve this problem.

[0003] Prior art, such as a BIM construction management system disclosed in a Chinese invention patent application with application number 201811601408.9, includes a background server and a front-end operation terminal, and the background server is loaded with a BIM model system, a construction personnel location recording system and a central database. The front-end operation terminal is loaded with a positioning system and a communication system. The front-end operation terminal controls the RFID reader to write the construction personnel coding information to the RFID tag, and controls the RFID reader to call the construction personnel coding information, and transmits the coding information to the BIM model system on the background server, and realizes three-dimensional simulation, visual data integration analysis and display on the BIM model system. In this way, the dispatching personnel can intuitively and vividly understand the location information and flow routes of the construction personnel in various areas of the construction site, which greatly increases the work efficiency of the construction personnel. According to the network conditions of the construction site in the rail area, two communication systems are equipped for use in combination, so that the deployment of dispatching commands is more timely and accurate.

[0004] In view of the above technical solutions, it is obvious that the current construction management still has the following deficiencies: 1. Insufficient attention to construction resource management may cause some equipment to be idle while other equipment is overused. This not only affects the service life of the equipment, but also increases the construction cost, and makes the construction progress less secure.

[0005] 2. The correlation between the various construction links has not been deeply analyzed, which is a one-way management. As a result, there are still certain deviations in the effectiveness and representativeness of the formulation of various control strategies such as subsequent construction progress, quality and cost. Summary of the invention

[0006] In view of this, in order to solve the problems raised in the above background technology, an intelligent construction management system and method based on BIM technology is proposed.

[0007] The purpose of the present invention can be achieved by the following technical solutions: In the first aspect, the present invention provides an intelligent construction management system based on BIM technology, including: a BIM building model import module for importing the BIM building model corresponding to the current construction project and extracting the progress record data of the current construction project from it;

[0008] The building resource data analysis module is used to perform resource allocation analysis based on progress record data and output analysis indicators.

[0009] The allocation adjustment judgment module is used to judge whether adjustment is required in the next construction stage based on the analysis index and output the judgment result.

[0010] The resource allocation prediction module is used to predict the confirmed resource allocation plan for the next construction stage based on the analysis indicators and judgment results.

[0011] The resource allocation execution module is used to import the confirmed resource allocation plan of the current construction project corresponding to the next construction stage into the BIM model, and send it to the construction management personnel related to the current construction project at the same time.

[0012] The second aspect of the present invention provides an intelligent construction management method based on BIM technology, comprising: S1, BIM building model import: import the BIM building model corresponding to the current construction project, and extract the progress record data of the current construction project from it

[0013] S2. Construction resource data analysis: Based on the progress record data, conduct resource allocation analysis and output analysis indicators.

[0014] S3. Resource allocation adjustment judgment: Based on the analysis indicators, judge whether adjustment is required in the next construction phase and output the judgment result.

[0015] S4. Resource allocation demand forecast: Based on the analysis indicators and judgment results, predict the confirmed resource allocation plan for the next construction stage.

[0016] S5. Resource allocation execution: Import the confirmed resource allocation plan for the next construction phase of the current construction project into the BIM model, and send it to the construction management personnel of the current construction project at the same time.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention extracts the progress record data of the current construction project from the BIM building model, performs resource allocation analysis and resource allocation adjustment judgment, and predicts the confirmed resource allocation plan for the next construction stage based on the judgment results. This effectively solves the current problem of insufficient attention to construction resource management, avoids the imbalance of some equipment being idle while other equipment is overused, and thereby ensures the service life of the equipment and saves construction costs while enhancing the construction progress.

[0018] (2) The present invention compares the planned start time, the planned end time, the actual start time and the actual end time to analyze the consistency of construction progress in four situations: on-time or ahead of schedule, construction according to the planned start time but delayed, ahead of schedule and delayed, and delayed construction and delayed completion. It accurately compares key elements such as the planned and actual start time and construction duration, and achieves an accurate quantitative evaluation of the construction progress. It can also accurately locate the specific links that cause delays in the construction process, quantify the impact of delays on the progress, and thus ensure the representativeness and effectiveness of the evaluation results of the consistency of the construction progress. It also provides convenience for measuring the rationality of decisions and clarifying the relationship between resources and progress.

[0019] (3) The present invention analyzes the similarity of construction contents in combination with the completed construction phases, confirms the adjustment ratio of equipment and the number of adjusted configurations, and then obtains a confirmed resource allocation plan for the next construction phase. This makes up for the current deficiency of lack of in-depth analysis of the correlation between various construction links, breaks the limitation of the current one-way management, and provides a strong guarantee for the effectiveness and representativeness of the formulation of various control strategies such as subsequent construction progress, quality and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the connection of the system modules of the present invention.

[0022] Figure 2 The present invention is a schematic flow chart of the steps for implementing the method. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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.

[0024] See also Figure 1 As shown, the present invention provides an intelligent construction management system based on BIM technology, including: a BIM building model import module, a building resource data analysis module, an allocation adjustment judgment module, a resource allocation prediction module and a resource deployment execution module.

[0025] In the above, the building resource data analysis module is connected to the BIM building model import module and the allocation adjustment judgment module respectively, and the resource allocation prediction module is connected to the allocation adjustment judgment module and the resource allocation execution module respectively.

[0026] The BIM building model importing module is used to import the BIM building model corresponding to the current construction project and extract the progress record data of the current construction project therefrom.

[0027] Specifically, the progress record data includes the planned start time, planned end time, actual start time and actual end time of each constructed stage, as well as the actual cumulative operation data of each planned construction equipment in each construction area corresponding to each constructed stage and the pre-established resource allocation plan, among which the resource allocation plan is composed of the planned cumulative running time, the planned completed workload and the planned number of completed processes.

[0028] It should be added that, in a specific embodiment, the various construction areas include but are not limited to a foundation construction area, a main structure construction area and a decoration and renovation construction area.

[0029] It should also be added that different construction areas will be equipped with various types of construction equipment, and there will be overlaps in the types of corresponding construction equipment in different construction areas. For example, there may be excavators, loaders, electric welders, pile drivers and electric drills in the foundation construction area. The main structure construction area may have tower cranes, electric welders, concrete mixers, cranes and electric drills, and the decoration and renovation construction area may have electric drills, levels, electric welders and tower cranes. When the utilization rate of construction equipment configured in a construction area is low and the utilization rate of the same type of construction equipment in another construction area is high, it is necessary to adjust the construction of this type of construction equipment to ensure that the construction of the two construction areas is completed smoothly and on time, and to achieve a reasonable allocation of construction equipment.

[0030] In a specific embodiment, the BIM building model has a highly visual interface, which allows managers and all participants to intuitively and clearly view the overall view of the building and the distribution of resources through a three-dimensional display, making it easier to discover potential unreasonable resource allocation, such as equipment being too concentrated in a certain area, causing inconvenience in operations in other areas, or material stacking affecting construction channels.

[0031] The building resource data analysis module is used to perform resource allocation analysis based on progress record data and output analysis indicators.

[0032] Specifically, the resource allocation analysis includes: A1. Counting the resource allocation matching degree of each constructed stage, and recording the constructed stage whose resource allocation matching degree is less than the set reference resource matching degree as the target stage.

[0033] It should be added that the specific value of the reference resource matching degree can be set to 0.7.

[0034] A2. Sort the resource allocation consistency of each constructed stage according to the construction time, count the number of target stages after the middle position, and divide it by the number of constructed stages after the middle position, and use the ratio as the resource allocation imbalance ratio k b .

[0035] A3. Using the construction stage as the horizontal coordinate and the resource allocation consistency as the vertical coordinate, construct a resource allocation consistency change curve, from which the slope is located as the resource allocation consistency change rate k. a .

[0036] A4. Calculate resource allocation and adjust demand λ. k b ′ is the imbalance ratio of resource allocation for reference, e is a natural constant, and λ is used as the analysis indicator.

[0037] It should be added that k b The specific value of ′ can be 0.2.

[0038] It should be added that It represents the correction factor of resource allocation imbalance. By constructing a curve with the construction stage and the resource allocation consistency as the horizontal and vertical coordinates, it can clearly show how the degree of consistency between resource allocation and pre-planning changes dynamically at different stages. By observing the change rate of resource allocation consistency, it is possible to discover the sharp change of resource allocation consistency in advance. A large positive slope or negative slope may indicate that some key factors have a significant impact on resource allocation, especially when k a When it is less than 0, we need to be vigilant, so we choose to set k a As a variable, and make corrections for imbalanced resource allocation.

[0039] It should also be added that locating the slope from the resource allocation fit variation curve refers to locating the slope of the regression line from the resource allocation fit variation curve, which can be directly identified by an image processing tool.

[0040] Specifically, the statistical resource allocation consistency of each completed phase in step A1 includes: A11, extracting the planned start time, planned end time, actual start time and actual end time of each completed phase from the progress record data;

[0041] A12. Compare the planned start time with the actual start time to obtain the planned start time difference of each completed construction phase.

[0042] A13. Compare the planned start time and the planned end time to obtain the planned construction duration of each completed phase, and determine the actual construction duration of each completed phase in the same way as the planned construction duration.

[0043] A14. Calculate the difference between the planned duration and the actual construction duration to obtain the actual construction duration difference of each completed construction stage, and calculate the degree of consistency of the construction progress of each completed construction stage.

[0044] A15. Extract the actual accumulated operation data of each planned construction equipment in each construction area corresponding to each completed construction stage from the progress record data and the pre-established resource allocation plan, and calculate the degree of consistency of the construction plan of the construction equipment corresponding to each completed construction stage.

[0045] A16. Set the weight coefficients of the construction progress consistency and the construction equipment and construction plan consistency, and obtain the resource allocation consistency of each constructed stage through weighted summation.

[0046] It should be added that the degree of conformity of the construction progress mainly considers the rationality of resource allocation from the time dimension of the construction stage. It is based on the comparative analysis of key time nodes such as the planned start time, the actual start time, the planned end time and the actual end time. For example, by judging whether the construction starts and ends on time, and the degree of matching between the construction duration and the planned duration, it reflects whether the entire construction process is consistent with the pre-set plan in terms of time arrangement. If the degree of conformity of the construction progress is high, it means that the input and allocation of resources at the time level can be carried out in an orderly manner according to the plan, and there is no idleness, waste or tension of resources due to time delays or advances. The degree of conformity of the equipment construction plan focuses on evaluating the rationality of resource allocation from the perspective of comparing the actual use of construction equipment with the pre-established equipment resource allocation plan. By collecting the actual cumulative operation data of each equipment in each construction stage, such as operation time, operation volume, number of completed processes, etc., and comparing them with the planned operation data, it is determined whether the use of the equipment is in line with the planned arrangement. A high degree of consistency between the equipment and construction plan means that equipment resources can be effectively utilized as expected at each construction stage, without problems such as inefficiency caused by excessive idleness or overuse of equipment.

[0047] Understandably, when the construction schedule changes, it often directly affects the execution of the equipment construction plan. For example, if the construction schedule is advanced, the equipment operation time and workload originally scheduled according to the planned schedule may need to be adjusted accordingly. It may happen that the equipment needs to be put into use in advance, but the preparations are not yet fully ready, which may lead to a decrease in the consistency of the equipment construction plan. Conversely, if the construction schedule is delayed, the equipment may be idle and waiting, which will also affect the consistency of the equipment construction plan. For example, the equipment was originally planned to continue to operate within a certain period of time, but due to the delay in construction, the equipment could not operate normally during this period of time, resulting in a deviation between the actual operation data and the planned operation data.

[0048] It is also understandable that as an important resource in the construction process, the degree of fit of the equipment construction plan will also affect the construction progress. If the equipment construction plan fit is low, such as frequent equipment failures, the actual workload is far lower than the planned workload, etc., it will cause delays in the construction process, which will in turn affect the entire construction progress and reduce the fit of the construction progress. On the contrary, when the equipment construction plan fit is high, the equipment can stably and efficiently complete the task as planned, which helps to promote the smooth progress of the construction progress as planned, thereby improving the fit of the construction progress. Therefore, when calculating the fit of resource allocation in each construction stage, the fit of the construction progress and the fit of the equipment construction plan are two indispensable and important factors. By reflecting the rationality of resource allocation from different dimensions, they jointly provide a basis for a comprehensive and accurate evaluation of the fit of resource allocation.

[0049] In a specific embodiment, the present invention mainly takes resource allocation as the main analysis background, and the construction equipment's construction plan consistency directly shows the rationality of the specific allocation of equipment resources. Therefore, the weight coefficient of the construction equipment's construction plan consistency is set to be greater than the weight coefficient of the construction progress consistency. By way of example, the weight coefficient of the construction equipment's construction plan consistency can be specifically taken as 0.6, and the weight coefficient of the construction progress consistency can be specifically taken as 0.4.

[0050] Furthermore, in step A14, the construction progress consistency of each completed stage is counted, including: B1. If the actual construction time difference of a certain completed stage is greater than or equal to 0, the construction progress consistency of the completed stage is recorded as 1.

[0051] B2. If the actual construction duration difference of a certain constructed phase is less than 0 and the planned start time difference of the constructed phase is 0, the construction progress consistency of the constructed phase is recorded as α0.

[0052] B3. If the actual construction duration difference of a certain constructed phase is less than 0 and the planned start time difference of the constructed phase is greater than 0, the construction progress consistency of the constructed phase is recorded as α1.

[0053] B4. If the actual construction duration difference of a certain constructed stage is less than 0 and the planned start time difference of the constructed stage is less than 0, the construction progress consistency of the constructed stage is recorded as α2, so as to obtain the construction progress consistency of each constructed stage, and the value is 1 or α0 or α1 or α2, α2<α1<α0<1.

[0054] Understandably, if the actual construction time difference is less than 0 and the planned start time difference is 0, it means that the construction was carried out according to the planned start time but was eventually delayed. If the actual construction time difference is less than 0 and the planned start time difference is greater than 0, it means that the construction was carried out ahead of schedule but was eventually delayed. If the actual construction time difference is less than 0 and the planned start time difference is less than 0, it means that the construction was delayed and eventually delayed. By comparing the planned start time with the actual start time to obtain the planned start time difference, and comparing the planned construction time with the actual construction time to obtain the actual construction time difference, the degree of deviation of each construction stage from the plan in the time dimension can be accurately quantified from multiple dimensions. This allows project managers to fully and meticulously understand whether each construction stage of the entire project is ahead of schedule or behind schedule, so as to have a clear and accurate understanding of the overall project progress, rather than relying solely on vague feelings or rough estimates to judge the project progress status.

[0055] In a specific embodiment, the construction started according to the planned start time but was delayed in the end, which indicates that the construction process was inconsistent with the plan, the construction failed to proceed completely as expected, and there were areas that needed improvement. This is a delay under predictable normal circumstances. Specifically, α0 can be 0.3. The construction started ahead of schedule but was delayed in the end, which means that the construction started when the preparation may not be sufficient, increasing the uncertainty and risk in the construction process. The subsequent delay further shows that there are major problems in the entire construction process from decision-making to execution. Therefore, a lower value is given to more strongly reflect the serious impact of this double negative situation on the construction progress. Specifically, α1 can be 0.1. Delayed construction and delayed completion are a more serious progress deviation. It fell behind the plan from the beginning, and the gap was not made up in the future, resulting in a deeper delay in the overall progress and a more far-reaching impact on subsequent work. Specifically, α2 can be -1.

[0056] It should be added that if the construction is started according to the planned start time but is finally delayed, it is likely to have a chain reaction on subsequent related work or projects, disrupting the original time arrangement and resource allocation plan. By giving a relatively low fit value, the negative impact of this delay on the entire project progress chain can be highlighted, prompting managers to pay attention to and analyze the reasons for the delay so as to take measures to avoid similar situations from happening again. Early construction may lead to unreasonable resource allocation in the early stage, such as construction materials, equipment or personnel not being in place in time. The delayed completion also indicates that the subsequent construction progress has not been effectively controlled, and the matching degree between resources and progress is poor. The low fit value can highlight the imbalance between resources and progress. The delayed construction stage may cause idle resources and waste, while the delayed completion may lead to delayed project delivery and affect the project reputation. This double negative effect makes the performance of the entire construction process extremely poor, so it is analyzed separately from the start time of construction at three levels.

[0057] The embodiment of the present invention analyzes the degree of conformity of construction progress in four situations, namely, on-time or ahead of schedule, construction according to the planned start time but delayed, ahead of schedule and delayed, and delayed construction and delayed completion, by comparing the planned start time, the planned end time, the actual start time and the actual end time. It accurately compares key elements such as the planned and actual start time, the construction duration, etc., to achieve an accurate quantitative evaluation of the construction progress. At the same time, it can accurately locate the specific links that cause delays in the construction process, quantify the impact of the delay on the progress, thereby ensuring the representativeness and effectiveness of the evaluation results of the degree of conformity of the construction progress, and also provides convenience for measuring the rationality of decisions and clarifying the relationship between resources and progress.

[0058] Furthermore, in step A15, the degree of conformity of the construction plan of the construction equipment corresponding to each completed stage is counted, including: E1, extracting the actual cumulative operating time, the actual completed work volume and the actual number of completed processes from the actual cumulative operation data.

[0059] E2. Extracting the planned cumulative running time, the planned completed workload and the planned completed process number from the pre-formulated resource allocation plan.

[0060] For example, the completed work volume refers to the completed tasks in the work area where the equipment is set, such as the volume of concrete mixed by a concrete mixer, assuming that 2,500 cubic meters of concrete were actually mixed in a certain construction phase. The volume of earth loaded by a loader, assuming that 8,000 cubic meters of earth were actually loaded in this phase, etc.

[0061] In another exemplary embodiment, the number of completed processes refers to the number of processes completed for some equipment that can clearly divide the processes. For example, the number of steel bar bending processes completed by a steel bar bending machine, if 1200 bending processes are completed in this construction stage, etc.

[0062] E3. For each planned construction equipment in each completed construction stage and in each corresponding construction area, perform the difference calculation between its actual cumulative operating time and the planned cumulative operating time, compare the calculated difference with the actual cumulative operating time of this planned construction equipment in each construction area corresponding to this construction stage, and use the ratio as the cumulative operating time deviation ratio.

[0063] E4. Calculate the deviation ratio of completed workload and the deviation ratio of completed process number in the same way as the deviation ratio of cumulative running time.

[0064] E5. For each planned construction equipment in each construction area at the same construction stage, the average of the cumulative operation time deviation ratio, the completed work volume deviation ratio and the completed process number deviation ratio are calculated to obtain the average cumulative operation time deviation ratio, the completed work volume deviation ratio and the completed process number deviation ratio of the planned construction equipment at each construction stage, and record them as (k T ) i ,(k Z ) i and (k X ) i , i represents the number of the construction stage, i=1,2,......n.

[0065] E6. Statistical analysis of the degree of fit of the construction plan for the construction equipment at each stage of construction β i , k′ T , k′ Z and k′ Xare the cumulative running time deviation ratio, the completed work volume deviation ratio and the completed process number deviation ratio of the reference respectively, σ i represents the construction plan consistency assessment correction factor for the i-th construction phase

[0066] In a specific embodiment, k′ T , k′ Z and k′ X The possible values ​​are 0.1, 0.15 and 0.2 respectively.

[0067] Furthermore, the specific setting process of the construction plan conformity assessment correction factor is as follows: R1. For the same completed construction stage, the maximum deviation ratio and the minimum deviation ratio are screened out from the cumulative operation time deviation ratios of each planned construction equipment in the same construction area, and the cumulative operation time deviation difference of each completed construction stage is calculated. i .

[0068] The statistical difference of the deviation of the accumulated operation time in each construction stage includes: subtracting the maximum deviation ratio from the minimum deviation ratio to obtain the extreme value difference of the accumulated operation time deviation ratio.

[0069] The average of the deviation ratio of the cumulative operation time of each construction area in each construction stage is calculated, and the average deviation ratio of the cumulative operation time of each construction stage is obtained, which is recorded as (Δk T ) i , and calculate the cumulative running time deviation difference of each construction stage χ i , Δk′ T It is the cumulative running time deviation ratio difference of the set reference.

[0070] It should be added that Δk′ T The specific value can be 0.1.

[0071] R2. If the cumulative running time deviation difference of a certain construction stage is less than or equal to 0, 0 is used as the running time deviation correction factor of the construction stage. Otherwise, the standard deviation of the cumulative running time deviation ratio of each planned construction equipment in the same construction area corresponding to the construction stage is calculated, and the calculation result is used as the dispersion of the cumulative running time deviation ratio, recorded as Will As the running time deviation correction factor of the constructed stage, denoted as ε, the cumulative running time deviation correction factor μ of each constructed stage is obtained. i , μ i The value is ε or 0.

[0072] R3, according to μ iThe setting method is similar to that of setting the completed workload deviation correction factor and the completed process number deviation correction factor of each constructed stage in turn, setting the weights of the cumulative running time deviation, the completed workload deviation and the completed process number deviation, and obtaining the construction plan conformity assessment correction factor of each constructed stage through weighted summation.

[0073] In a specific embodiment, the continuous and stable operation of the equipment plays a decisive role in the progress of the entire project. The cumulative operating time of the equipment directly reflects whether the equipment is put into use as planned and its operating efficiency. If the equipment operating time deviation is large, it is likely to cause the entire project progress to be delayed, so it is given a higher weight of 0.5. In contrast, the equipment must operate normally before the completion of the workload can be guaranteed. In projects dominated by equipment operations, the completion of the workload is often closely related to the equipment operating time, and its importance is slightly lower. The deviation weight given to the deviation of the completed workload is 0.3. In industrial construction projects, the process is relatively standardized, and the deviation of the number of processes has a relatively small impact on the overall progress and quality. As long as the equipment operates normally and the workload can be completed as planned, the advancement of the process is usually smooth, so the weight is relatively low, so the weight of the deviation of the number of completed processes is set to 0.2.

[0074] Specifically, what needs to be added about step A2 is that the constructed stages should be arranged in order according to the degree of consistency of resource allocation, so that the resource allocation of different stages can be analyzed more clearly later, and the scope of stages with more prominent resource allocation problems can be quickly determined, which provides a clear direction for further in-depth analysis and formulation of improvement measures, and more energy can be focused on those stages with lower consistency. At the same time, it is also convenient to highlight the resource allocation of construction stages that are closer to the current one.

[0075] In a specific embodiment, the constructed stages whose resource allocation consistency does not meet the set reference standard are selected as target stages, and the severity of the unreasonable resource allocation in these stages in the overall constructed stages is quantified by calculating the resource allocation imbalance ratio. Compared with a general view of the overall resource allocation situation, it is possible to more accurately locate the specific construction stages that need to focus on solving the resource allocation problem and the resource allocation situation of the construction stage that is closer to the current stage. The resource allocation imbalance ratio reflects the proportion of stages with poor resource allocation in a certain range, that is, the proportion of stages after the middle position in the sorting position, among all the constructed stages in the form of a specific ratio. This helps managers to more intuitively understand the severity of unreasonable resource allocation in specific stages such as the second half of the project, so as to reasonably arrange the priority and intensity of resource adjustment.

[0076] The allocation adjustment judgment module is used to judge whether adjustment is required in the next construction phase based on the analysis index, and output a judgment result, including whether adjustment is required or not.

[0077] Specifically, determining whether adjustment is required in the next construction phase includes: extracting a resource allocation adjustment requirement λ from the analysis index.

[0078] Compare λ with the set reference resource allocation adjustment demand λ′. If λ≥λ′, the demand adjustment is taken as the judgment result, otherwise no adjustment is taken as the judgment result.

[0079] The resource allocation prediction module is used to predict the confirmed resource allocation plan for the next construction stage based on the analysis indicators and judgment results.

[0080] In a specific embodiment, λ′ may be set to 0.7.

[0081] Specifically, predicting the confirmed resource allocation plan for the next construction phase includes: D1. If the judgment result is that no adjustment is required, extracting the planned resource allocation plan for the next construction phase from the progress record data as the confirmed resource allocation plan.

[0082] D2. If the judgment result is demand adjustment, the planned construction content of each set construction stage is extracted from the progress record data, and the similarity between the construction content of the next construction stage and each completed construction stage is calculated by a similarity measurement algorithm.

[0083] In a specific embodiment, the similarity measurement algorithm includes but is not limited to the Jaccard similarity coefficient and the Pearson correlation coefficient, and the similarity measurement algorithm is a relatively mature algorithm, and its specific calculation process is not illustrated here.

[0084] D3. Extract the corresponding configuration of each construction equipment in the next construction stage from the progress record data as each analysis equipment, and extract the configuration number of each analysis equipment, confirm the adjustment ratio of each analysis equipment, recorded as f j , j represents the analysis equipment number, j=1,2,......m.

[0085] D4. The configuration number of each analysis device is recorded as M j , calculate the number of adjustment configurations for each analysis device, denoted as M j ′,M′ j =M j *(1+f j ), and the adjusted configuration number of each analytical equipment is used as the confirmed resource allocation plan for the next construction phase.

[0086] The embodiment of the present invention performs similarity analysis on construction contents in combination with the constructed stages, confirms the adjustment ratio of equipment and the number of adjusted configurations, and then obtains a confirmed resource allocation plan for the next construction stage. This makes up for the current deficiency of no in-depth analysis of the correlation between various construction links, breaks the limitation of the current one-way management, and provides a strong guarantee for the effectiveness and representativeness of the formulation of various control strategies such as subsequent construction progress, quality and cost.

[0087] Further, confirming the adjustment ratio of each analysis device includes: recording the constructed stage whose construction content similarity is greater than the set reference construction content similarity as the analysis stage.

[0088] The actual accumulated operation data of each analysis device in each construction area corresponding to each analysis stage and the pre-formulated resource allocation plan are extracted from the progress record data.

[0089] Statistics are collected on the average cumulative running time deviation ratio and average completed workload deviation ratio of each analysis device corresponding to each analysis stage.

[0090] If the average cumulative running time deviation ratio of a certain analysis equipment in a certain analysis phase is greater than 0 or the average completed workload deviation ratio in this analysis phase is greater than 0, then this analysis phase is recorded as an excess phase.

[0091] The number of excess stages and the number of analysis stages involved in each analysis device are counted, and the ratio of the two is taken as the excess stage ratio, denoted as k j ″.

[0092] Calculate the adjustment ratio f of each analytical equipment j , k0 is the set reference excess stage ratio.

[0093] In a specific embodiment, the value of k0 is affected by the number of analysis stages. For example, when the number of analysis stages is 6, deviations in two stages are allowed. Specifically, k0 can be

[0094] It should be added that the specific value of the similarity of the reference construction content can be set to 0.85.

[0095] The resource allocation execution module is used to import the confirmed resource allocation plan corresponding to the next construction stage of the current construction project into the BIM model, and send it to the construction management related personnel of the current construction project.

[0096] The embodiment of the present invention extracts the progress record data of the current construction project from the BIM building model, performs resource allocation analysis and resource allocation adjustment judgment, and predicts the confirmed resource allocation plan for the next construction stage based on the judgment results. This effectively solves the current problem of insufficient attention to construction resource management, avoids the imbalance phenomenon of some equipment being idle while other equipment is overused, and further ensures the service life of the equipment and saves construction costs while enhancing the guarantee of construction progress.

[0097] See also Figure 2 As shown, the present invention provides an intelligent construction management method based on BIM technology, including: S1, BIM building model import: import the BIM building model corresponding to the current construction project, and extract the progress record data of the current construction project from it

[0098] S2. Construction resource data analysis: Based on the progress record data, conduct resource allocation analysis and output analysis indicators.

[0099] S3. Resource allocation adjustment judgment: Based on the analysis indicators, judge whether adjustment is required in the next construction phase and output the judgment result.

[0100] S4. Resource allocation demand forecast: Based on the analysis indicators and judgment results, predict the confirmed resource allocation plan for the next construction stage.

[0101] S5. Resource allocation execution: Import the confirmed resource allocation plan for the next construction phase of the current construction project into the BIM model, and send it to the construction management personnel of the current construction project at the same time.

[0102] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they shall all fall within the protection scope of the present invention.

Claims

1. An intelligent construction management system based on BIM technology, characterized in that: include: BIM building model import module, used to import the BIM building model corresponding to the current construction project and extract the progress record data of the current construction project; Building resource data analysis module, used to perform resource allocation analysis based on progress record data and output analysis indicators; An allocation adjustment judgment module is used to judge whether adjustment is required in the next construction phase based on the analysis indicators, and output a judgment result, including whether adjustment is required or not; A resource allocation prediction module, used to predict the confirmed resource allocation plan for the next construction phase based on the analysis indicators and judgment results; The resource allocation execution module is used to import the confirmed resource allocation plan of the current construction project corresponding to the next construction stage into the BIM model, and send it to the construction management personnel related to the current construction project at the same time.

2. The intelligent construction management system based on BIM technology as claimed in claim 1, characterized in that: The resource allocation analysis comprises: The resource allocation consistency of each completed phase is counted, and the completed phase whose resource allocation consistency is less than the set reference resource consistency is recorded as the target phase; The resource allocation consistency of each constructed stage is sorted according to the construction time, and the number of target stages after the sorting position is the middle position is counted, and then divided by the number of constructed stages after the sorting position is the middle position, and the ratio is taken as the resource allocation imbalance ratio k b ; With the construction stage as the horizontal axis and the resource allocation consistency as the vertical axis, a resource allocation consistency change curve is constructed, from which the slope is located as the resource allocation consistency change rate k a ; Calculate resource allocation to adjust demand λ, k b ′ is the imbalance ratio of resource allocation for reference, e is a natural constant, and λ is used as the analysis indicator.

3. The intelligent construction management system based on BIM technology as claimed in claim 2, characterized in that: The statistical resource allocation consistency of each completed construction stage includes: Extracting the planned start time, planned end time, actual start time and actual end time of each completed construction phase from the progress record data; Compare the planned start time with the actual start time to obtain the planned start time difference of each construction phase; Compare the planned start time and the planned end time to obtain the planned construction duration of each completed phase, and determine the actual construction duration of each completed phase in the same way as the planned construction duration is determined; The difference between the planned duration and the actual construction duration is calculated to obtain the actual construction duration difference of each completed construction stage, and the degree of consistency of the construction progress of each completed construction stage is calculated; Extracting the actual accumulated operation data of each planned construction equipment in each construction area corresponding to each completed construction stage from the progress record data and the pre-formulated resource allocation plan, and calculating the degree of conformity of the construction plan of the construction equipment corresponding to each completed construction stage; The weight coefficients of the construction progress consistency and the construction equipment and construction plan consistency are set, and the resource allocation consistency of each constructed stage is obtained by weighted summation.

4. The intelligent construction management system based on BIM technology as claimed in claim 3, characterized in that: The statistical construction progress consistency of each completed stage includes: If the actual construction duration difference of a certain stage of construction is greater than or equal to 0, the construction progress consistency of the stage of construction is recorded as 1; If the actual construction duration difference of a certain constructed phase is less than 0 and the planned start time difference of the constructed phase is 0, the construction progress consistency of the constructed phase is recorded as α0; If the actual construction time difference of a certain constructed phase is less than 0 and the planned start time difference of the constructed phase is greater than 0, the construction progress consistency of the constructed phase is recorded as α1; If the actual construction duration difference of a certain constructed stage is less than 0 and the planned start time difference of the constructed stage is less than 0, the construction progress consistency of the constructed stage is recorded as α2, so as to obtain the construction progress consistency of each constructed stage, and the value is 1 or α0 or α1 or α2, α2<α1<α0<1.

5. The intelligent construction management system based on BIM technology as claimed in claim 3, characterized in that: The statistical construction plan consistency of the construction equipment corresponding to each completed construction stage includes: Extracting the actual accumulated operation time, the actual completed operation amount and the actual completed process number from the actual accumulated operation data; Extracting the planned cumulative running time, the planned completed workload and the planned completed process number from the resource allocation plan; For each planned construction equipment in each completed construction stage and each corresponding construction area, the difference between its actual cumulative operating time and the planned cumulative operating time is calculated, and the calculated difference is compared with the actual cumulative operating time of the planned construction equipment in each construction area corresponding to the construction stage, and the ratio is used as the cumulative operating time deviation ratio; The deviation ratio of the completed work volume and the deviation ratio of the number of completed processes are calculated in the same way as the deviation ratio of the cumulative running time. For each planned construction equipment in each construction area at the same construction stage, the average of the cumulative operation time deviation ratio, the completed work volume deviation ratio and the completed process number deviation ratio are calculated respectively, and the average cumulative operation time deviation ratio, the completed work volume deviation ratio and the completed process number deviation ratio of the planned construction equipment at each construction stage are obtained, and recorded as (k T ) i ,(k Z ) i and (k X ) i , i represents the construction phase number, i=1,2,......n; Statistical calculation of the construction plan matching degree β of the construction equipment in each construction stage i , k′ T , k′ Z and k′ X are the cumulative running time deviation ratio, the completed work volume deviation ratio and the completed process number deviation ratio of the reference respectively, σ i It represents the construction plan conformity assessment correction factor of the i-th construction stage.

6. The intelligent construction management system based on BIM technology as claimed in claim 5, characterized in that: The specific setting process of the construction plan conformity assessment correction factor is as follows: For the same completed construction stage, the maximum deviation ratio and the minimum deviation ratio are selected from the cumulative operation time deviation ratios of each planned construction equipment in the same construction area, and the cumulative operation time deviation difference of each completed construction stage is calculated. i ; If the cumulative running time deviation difference of a certain construction stage is less than or equal to 0, 0 is used as the running time deviation correction factor of the construction stage. Otherwise, the standard deviation of the cumulative running time deviation ratio of each planned construction equipment in the same construction area corresponding to the construction stage is calculated, and the calculation result is used as the dispersion of the cumulative running time deviation ratio, recorded as Will As the running time deviation correction factor of the constructed stage, denoted as ε, the cumulative running time deviation correction factor μ of each constructed stage is obtained. i , μ i The value is ε or 0; According to μ i The setting method is similar to that of setting the completed workload deviation correction factor and the completed process number deviation correction factor of each constructed stage in turn, setting the weights of the cumulative running time deviation, the completed workload deviation and the completed process number deviation, and obtaining the construction plan conformity assessment correction factor of each constructed stage through weighted summation.

7. The intelligent construction management system based on BIM technology as claimed in claim 1, characterized in that: The determining whether adjustment is required in the next construction phase includes: Extract resource allocation adjustment demand λ from the analysis indicators; Compare λ with the set reference resource allocation adjustment demand λ′. If λ≥λ′, the demand adjustment is taken as the judgment result, otherwise no adjustment is taken as the judgment result.

8. The intelligent construction management system based on BIM technology as claimed in claim 5, characterized in that: The predicted confirmed resource allocation plan for the next construction phase includes: If the result of the judgment is that no adjustment is required, extracting the planned resource allocation plan for the next construction phase from the progress record data as the confirmed resource allocation plan; If the judgment result is a demand adjustment, the planned construction content of each set construction stage is extracted from the progress record data, and the similarity between the construction content of the next construction stage and each completed construction stage is calculated by a similarity measurement algorithm; Extract the corresponding configuration of each construction equipment in the next construction stage from the progress record data as each analysis equipment, and extract the configuration number of each analysis equipment at the same time, confirm the adjustment ratio of each analysis equipment, and record it as f j , j represents the number of the analysis equipment, j = 1, 2, ... m; The configuration number of each analysis device is recorded as M j , calculate the number of adjustment configurations for each analysis device, denoted as M j ′, Mj′=Mj*(1+fj), and the adjusted configuration number of each analysis equipment is used as the confirmed resource allocation plan for the next construction stage.

9. The intelligent construction management system based on BIM technology as claimed in claim 8, characterized in that: The step of confirming the adjustment ratio of each analytical device includes: The constructed phase whose construction content similarity is greater than the set reference construction content similarity is recorded as the analysis phase; Extracting actual accumulated operation data of each analysis device in each construction area corresponding to each analysis stage and a pre-established resource allocation plan from the progress record data; Calculate the average cumulative running time deviation ratio and average completed workload deviation ratio of each analysis equipment in each analysis stage; If the average cumulative running time deviation ratio of a certain analysis equipment in a certain analysis phase is greater than 0 or the average completed workload deviation ratio in this analysis phase is greater than 0, then this analysis phase is recorded as an excess phase; The number of excess stages and the number of analysis stages involved in each analysis device are counted, and the ratio of the two is taken as the excess stage ratio, denoted as k j ″; Calculate the adjustment ratio f of each analytical device j , k0 is the set reference excess stage ratio.

10. An intelligent construction management method based on BIM technology, characterized in that: include: S1. Import BIM building model: Import the BIM building model corresponding to the current construction project and extract the progress record data of the current construction project from it S2. Construction resource data analysis: Based on the progress record data, conduct resource allocation analysis and output analysis indicators; S3. Resource allocation adjustment judgment: Based on the analysis indicators, judge whether the next construction phase needs to be adjusted, and output the judgment result; S4. Resource allocation demand forecast: Based on the analysis indicators and judgment results, forecast the confirmed resource allocation plan for the next construction stage; S5. Resource allocation execution: Import the confirmed resource allocation plan for the next construction phase of the current construction project into the BIM model, and send it to the construction management personnel of the current construction project at the same time.

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