Construction progress management method and system based on BIM

Abstract

The present invention relates to the technical field of building construction management, and in particular to a method and system for building construction progress management based on BIM. The method comprises: respectively obtaining an actual three-dimensional model and a BIM simulation model corresponding to a building construction task; matching the actual three-dimensional model with the BIM simulation model, and determining a virtual construction node corresponding to a current construction node in the BIM simulation model; determining the actual construction duration corresponding to the current construction node and the estimated total construction duration of the building construction task, and determining the difficulty of each construction stage in the building construction task; determining the virtual construction duration corresponding to the virtual construction node; determining the construction progress status of the current construction stage based on the actual construction duration, the estimated total construction duration and the virtual construction duration; and managing the construction progress of the building construction task according to the construction progress status of the current construction stage. Since the difficulty of each construction stage is taken into consideration, the reliability and accuracy of the construction progress management are improved.

Description

Technical Field

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

[0002] During the construction process, the management of the construction progress is very important to the entire construction process. Generally, in order to ensure the delivery deadline, effective progress management of the construction process is required. Improper progress management during the construction process will lead to a disconnect between the expected construction progress and the actual progress of the building, and the building cannot be delivered on time.

[0003] In related technologies, it is usually necessary to construct a BIM (Building Information Modeling) simulation model during the construction process, divide the BIM simulation model on a time scale, and divide the construction progress during the construction process into construction stages of different sizes according to the degree of construction completion. The actual projects are matched with the decomposed expected construction progress, and the construction progress can be managed in a refined manner based on the matching results to avoid overdue progress during the construction process.

[0004] However, when dividing the construction phases, the construction time required for each construction phase is different. Simply determining the progress completion status based on the difference between the BIM simulation model and the actual building will lead to an uneven construction process, which in turn affects the reliability and accuracy of the construction progress management link. Summary of the invention

[0005] In order to solve the technical problem that simply determining the progress completion status through the difference between the BIM simulation model and the actual building will lead to an uneven construction process, thereby affecting the reliability and accuracy of the construction progress management link, the purpose of the present invention is to provide a BIM-based construction progress management method and system, and the technical scheme adopted is as follows:

[0006] A construction progress management method based on BIM, the method comprising:

[0007] Obtain the actual three-dimensional model and BIM simulation model corresponding to the building construction task respectively;

[0008] Matching the actual three-dimensional model with the BIM simulation model to determine a virtual construction node in the BIM simulation model corresponding to the current construction node;

[0009] Determine the actual construction time corresponding to the current construction node and the estimated total construction time of the construction task, and determine the difficulty of each construction stage in the construction task;

[0010] Determining the virtual construction duration corresponding to the virtual construction node according to the difficulty of each construction stage in the construction task and the estimated total construction duration of the construction task;

[0011] Determine the construction progress status of the current construction phase in the construction task based on the actual construction duration, the estimated total construction duration and the virtual construction duration;

[0012] The construction progress of the building construction task is managed according to the construction progress status of the current construction stage.

[0013] According to a BIM-based construction progress management method provided by the present invention, the difficulty of each construction stage in the construction task is determined, including:

[0014] Acquire multiple historical complete construction data, and establish a construction duration ratio curve according to the multiple historical complete construction data;

[0015] Extracting target historical complete construction data having a similar relationship with the building construction task from the plurality of historical complete construction data;

[0016] The difficulty of each construction stage in the construction task is determined according to the construction time proportion curve and the target historical complete construction data.

[0017] According to a BIM-based construction progress management method provided by the present invention, a construction time proportion curve is established according to the plurality of historical complete construction data, including:

[0018] Decomposing each of the historical complete construction data into construction phases to obtain each construction phase in each of the historical complete construction data and the historical construction duration of each construction phase;

[0019] Determine the total historical construction duration corresponding to each historical complete construction data, and determine the proportion of the historical construction duration of each construction stage in different historical complete construction data;

[0020] Constructing a plurality of two-dimensional data according to the total historical construction duration and the proportion of the historical construction duration;

[0021] The multiple two-dimensional data are fitted to obtain a construction time proportion curve.

[0022] According to a BIM-based construction progress management method provided by the present invention, target historical complete construction data having a similar relationship with the construction task is extracted from the plurality of historical complete construction data, including:

[0023] Calculate the similarity between each historical complete construction data and the building construction task respectively;

[0024] Compare the similarity corresponding to each historical complete construction data with the preset similarity threshold to obtain a comparison result;

[0025] The historical complete construction data whose similarity in the comparison result is higher than a preset similarity threshold is determined as the target historical complete construction data.

[0026] According to a BIM-based construction progress management method provided by the present invention, the difficulty of each construction stage in the construction task is determined according to the construction time proportion curve and the target historical complete construction data, including:

[0027] Determine, according to the construction time proportion curve and the target historical complete construction data, a plurality of historical construction time proportions corresponding to each construction stage in the building construction task;

[0028] Taking a weighted average of the multiple historical construction duration proportions corresponding to each construction stage, the average construction duration proportion of each construction stage in the building construction task is calculated;

[0029] According to the average proportion of the construction time of each construction stage, the difficulty of each construction stage in the construction task is calculated.

[0030] According to a BIM-based construction progress management method provided by the present invention, the difficulty of each construction stage in the construction task is calculated according to the average proportion of the construction time of each construction stage, including:

[0031] Determine the slope variance of the construction time proportion curve, and normalize the slope variance to obtain a first coefficient;

[0032] Based on the construction time proportion curve, determine the target construction time proportion of each construction stage under the building construction task;

[0033] Based on the first coefficient, the target construction time ratio and the average of the construction time ratios, the estimated construction time ratio of each construction stage in the construction task is calculated;

[0034] Sum the estimated construction time proportions of each construction phase in the construction task to obtain a sum of the time proportions;

[0035] The estimated construction time ratio of each construction stage is divided by the sum of the time ratios to calculate the difficulty of each construction stage in the construction task.

[0036] According to a BIM-based construction progress management method provided by the present invention, based on the actual construction duration, the estimated total construction duration and the virtual construction duration, the construction progress status of the current construction stage in the construction task is determined, including:

[0037] Calculate the construction time difference according to the actual construction time and the virtual construction time;

[0038] Calculate a time difference comparison threshold according to the actual construction time and the estimated total construction time;

[0039] Compare the construction time difference with the time difference comparison threshold to obtain a comparison result;

[0040] According to the comparison result, the construction progress status of the current construction phase in the building construction task is determined.

[0041] According to a BIM-based construction progress management method provided by the present invention, a time difference comparison threshold is calculated according to the actual construction time and the estimated total construction time, including:

[0042] The remaining construction time is calculated by subtracting the estimated total construction time from the actual construction time;

[0043] The remaining construction time is divided by the estimated total construction time to calculate the remaining time ratio;

[0044] The remaining time ratio is normalized to obtain a time difference comparison threshold.

[0045] According to a BIM-based construction progress management method provided by the present invention, the construction progress status of the current construction stage in the construction task is determined according to the comparison result, including:

[0046] If the construction time difference is greater than the time difference comparison threshold, the construction progress status of the current construction phase in the construction task is determined to be overdue;

[0047] If the construction time difference is less than the time difference comparison threshold, the construction progress status of the current construction phase in the construction task is determined to be ahead of schedule;

[0048] If the construction time difference is equal to the time difference comparison threshold, it is determined that the construction progress status of the current construction phase in the construction task is normal.

[0049] On the other hand, the present invention also provides a BIM-based building construction progress management system, the system comprising:

[0050] An acquisition module is used to respectively acquire the actual three-dimensional model and the BIM simulation model corresponding to the building construction task;

[0051] A matching module, used to match the actual three-dimensional model with the BIM simulation model, and determine a virtual construction node in the BIM simulation model corresponding to the current construction node;

[0052] The first processing module is used to determine the actual construction time corresponding to the current construction node and the estimated total construction time of the building construction task, and determine the difficulty of each construction stage in the building construction task;

[0053] The second processing module is used to determine the virtual construction duration corresponding to the virtual construction node according to the difficulty of each construction stage in the construction task and the estimated total construction duration of the construction task;

[0054] A third processing module is used to determine the construction progress status of the current construction stage in the construction task based on the actual construction duration, the estimated total construction duration and the virtual construction duration;

[0055] The management module is used to manage the construction progress of the building construction task according to the construction progress status of the current construction stage.

[0056] The present invention has the following beneficial effects:

[0057] By matching the actual 3D model with the BIM simulation model, the virtual construction node corresponding to the current construction node in the BIM simulation model is determined, the actual construction time corresponding to the current construction node and the estimated total construction time of the construction task are determined, and the difficulty of each construction stage in the construction task is determined. According to the difficulty of each construction stage in the construction task and the estimated total construction time of the construction task, the virtual construction time corresponding to the virtual construction node is determined. Based on the actual construction time, the estimated total construction time and the virtual construction time, the construction progress status of the current construction stage in the construction task is determined. Finally, according to the construction progress status of the current construction stage, the construction progress of the construction task is managed. Since the virtual construction time corresponding to the virtual construction node is determined, the difficulty of each construction stage in the construction task is taken into account, so that the estimated construction progress is more in line with the actual situation, thereby improving the reliability and accuracy of the construction progress management. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0059] Figure 1 A method flow chart of a construction progress management method based on BIM provided by one embodiment of the present invention;

[0060] Figure 2 It is a structural diagram of the BIM simulation model of the building construction process;

[0061] Figure 3 A schematic diagram of the work breakdown structure for a complete historical construction data;

[0062] Figure 4 A schematic structural diagram of a BIM-based building construction progress management system provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0063] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of a BIM-based construction progress management method and system proposed by the present invention, its specific implementation method, structure, features and effects, in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0064] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0065] The following is a detailed description of a BIM-based construction progress management method and system provided by the present invention in conjunction with the accompanying drawings.

[0066] See also Figure 1 , which shows a method flow chart of a method for building construction progress management based on BIM provided by an embodiment of the present invention, such as Figure 1 As shown, the BIM-based construction progress management method provided by the embodiment of the present invention specifically includes:

[0067] Step 110: respectively obtain the actual three-dimensional model and the BIM simulation model corresponding to the building construction task.

[0068] It is understandable that the actual 3D model is constructed regularly during the construction process according to the actual construction situation. In practical applications, the image information of the construction process can be obtained regularly by using a drone carrying a laser scanning device, and then the actual 3D model of the construction process can be constructed using the image information. Specifically, the actual 3D model can be obtained once a week.

[0069] The BIM simulation model is artificially constructed before construction. It contains various structural information of the current construction task and the usage data of building materials. Figure 2 A BIM simulation model of the construction process is shown as an example. The BIM simulation model is a digital building model that contains the building's geometric information, spatial relationships, geographic information, and various attribute information of building components, such as materials, costs, and progress, and can provide an effective theoretical basis for construction progress management.

[0070] Step 120: Match the actual three-dimensional model with the BIM simulation model to determine the virtual construction node in the BIM simulation model that corresponds to the current construction node.

[0071] It is understandable that since the actual construction progress may deviate from the pre-planned construction progress, there will be certain differences between the actual three-dimensional model regularly constructed according to the actual construction progress and the pre-constructed BIM simulation model. In the progress management process, it is necessary to match the actual three-dimensional model with the BIM simulation model to find the virtual construction node corresponding to the current construction node. The virtual construction node can represent the position of the current construction node in the BIM simulation model.

[0072] Step 130: Determine the actual construction duration corresponding to the current construction node and the estimated total construction duration of the construction task, and determine the difficulty of each construction stage in the construction task.

[0073] In this embodiment, the actual construction duration may represent the length of the construction time period actually completed at the current construction node, and the estimated total construction duration may represent the total construction duration estimated to be required for the entire construction task.

[0074] It is understandable that since the construction process of each construction stage is different, the difficulty can represent the complexity of the construction process of each construction stage. The higher the difficulty, the more complex the construction stage is, and the higher the proportion of construction time, that is, the longer the construction time.

[0075] Step 140: Determine the virtual construction duration corresponding to the virtual construction node according to the difficulty of each construction stage in the construction task and the estimated total construction duration of the construction task.

[0076] In this embodiment, the completed construction stages under the virtual construction node are known. By multiplying the difficulty of each construction stage in the completed construction stage by the estimated total construction duration, the estimated construction duration of each construction stage in the completed construction stage can be obtained. By summing the estimated construction durations of each construction stage in the completed construction stage, the virtual construction duration can be obtained.

[0077] Step 150: Determine the construction progress status of the current construction phase in the construction task based on the actual construction duration, the estimated total construction duration, and the virtual construction duration.

[0078] In this embodiment, the construction progress status may represent the progress of the construction work under the current construction progress, such as whether the current construction progress is overdue.

[0079] Step 160: Manage the construction progress of the building construction task according to the construction progress status of the current construction stage.

[0080] In actual applications, the construction progress can be adjusted in time according to the construction progress status. For example, when the construction progress status is overdue, it is necessary to timely adjust the estimated construction duration of the subsequent unfinished construction stage to appropriately shorten the subsequent construction duration and ensure that the entire construction task can be completed on schedule.

[0081] In one embodiment, determining the difficulty of each construction stage in a construction task specifically includes:

[0082] The first step is to obtain multiple complete historical construction data and establish a construction time ratio curve based on the multiple complete historical construction data.

[0083] In this embodiment, historical complete construction data can be obtained from a construction database that has been completed. Each historical complete construction data contains the key data of a complete construction task in the entire construction cycle, which can be specifically presented in the form of a complete BIM simulation model.

[0084] In a specific implementation, a construction time ratio curve is established based on multiple historical complete construction data, including:

[0085] Firstly, the construction phases of each historical complete construction data are decomposed to obtain the various construction phases in each historical complete construction data and the historical construction duration of each construction phase.

[0086] A work breakdown structure (WBS) is created for the BIM simulation model corresponding to the complete historical construction data to achieve construction phase decomposition, so that the construction project corresponding to the entire complete historical construction data can be decomposed into smaller and more manageable work units, that is, decomposed into multiple construction phases. Figure 3 The following example shows a work breakdown structure of a complete historical construction data. Figure 3 As shown, the complete historical construction data P1 is specifically decomposed into three construction stages, S1, S2, and S3. The construction stage S1 is further decomposed into two sub-stages, S11 and S12. The sub-stage S12 is further decomposed into three construction contents, A1, A2, and A3. The construction stage S3 is further decomposed into two construction contents, A4 and A5.

[0087] Through the above operations, a complete construction process can be decomposed into different construction stages, and there is a time sequence relationship between the decomposed construction stages, such as foundation laying, steel frame, concrete pouring, wall construction and other operation processes. Each operation process has a corresponding time length, and then a data sequence can be constructed, as follows:

[0088] (1)

[0089] Among them, A1, A2, and A3 represent different construction stages, and T1, T2, and T3 represent the historical construction duration corresponding to each construction stage.

[0090] Then, the total historical construction duration corresponding to each historical complete construction data is determined respectively, and the proportion of the historical construction duration of each construction stage in different historical complete construction data is determined.

[0091] It is understandable that since the construction projects corresponding to different historical complete construction data are not consistent with the construction projects corresponding to the current construction tasks in nature and scale, the construction duration corresponding to the same construction stage is also different for construction projects of different scales. Therefore, the time length of each construction stage cannot be directly analyzed, but the time proportion of each construction stage in the entire construction project should be considered.

[0092] In this embodiment, the historical construction duration ratio can represent the ratio between the historical construction duration of a certain construction phase and the total historical construction duration of a certain historical complete construction data.

[0093] For example, The construction phase is The proportion of historical construction time in the historical complete construction data can be expressed as follows:

[0094] (2)

[0095] In the formula, Indicates The construction phase is The proportion of historical construction time in the historical complete construction data, Indicates The construction phase is The historical construction duration in the historical complete construction data, Indicates The number of construction phases in the historical complete construction data, Indicates that the a-th construction stage is in The historical construction duration in the historical complete construction data, Represents the total historical construction duration of the entire historical complete construction data.

[0096] Subsequently, multiple two-dimensional data were constructed based on the total historical construction time and the proportion of historical construction time.

[0097] In practical applications, all The historical complete construction data of each construction stage are analyzed. According to the analysis, the historical construction duration of the same construction stage in different historical complete construction data may have different proportions. For example, the total historical construction duration corresponding to a certain historical complete construction data is 100 days, and the historical construction duration of the foundation stage is 10 days. However, when the total historical construction duration is 200 days, the historical construction duration of the foundation stage is not necessarily 20 days.

[0098] Therefore, we can The historical total construction time of the historical complete construction data of each construction stage is sorted, and two-dimensional data in a two-dimensional space is constructed according to the proportion of historical construction time of each construction stage and the total historical construction time. The horizontal axis of the two-dimensional data is the total historical construction time, and the vertical axis is the proportion of historical construction time of the construction stage.

[0099] Finally, multiple two-dimensional data are fitted to obtain the construction time proportion curve.

[0100] In practical applications, the least squares fitting can be performed on the two-dimensional data in the constructed two-dimensional space to construct a construction time ratio curve in which the historical construction time ratio changes with the total historical construction time.

[0101] In the second step, target historical complete construction data having similar relationships with the building construction tasks are extracted from multiple historical complete construction data.

[0102] In a specific implementation, target historical complete construction data having a similar relationship with the building construction task is extracted from a plurality of historical complete construction data, specifically including:

[0103] First, the similarity between each historical complete construction data and the building construction task is calculated respectively.

[0104] In this embodiment, Complete historical construction data and The similarity between construction tasks can be expressed as follows:

[0105] (3)

[0106] In the formula, Indicates Complete historical construction data and The similarity between construction tasks, represents the total number of construction phases in the two construction projects, Indicates Construction tasks The construction phase is Does the same construction phase exist in the historical complete construction data? The value is 1, if it does not exist The value is 0. Indicates The time sequence difference value of each construction stage is Indicates that the The location of each construction phase.

[0107] Then, the similarity corresponding to each historical complete construction data is compared with the preset similarity threshold to obtain the comparison result.

[0108] In practical applications, the preset similarity threshold can be reasonably set according to actual needs. For example, in this embodiment, the preset similarity threshold can be set to 0.7.

[0109] Finally, the historical complete construction data whose comparison results show that the similarity is higher than the preset similarity threshold is determined as the target historical complete construction data.

[0110] It can be understood that the higher the similarity, the closer the construction processes of the two construction projects are. Therefore, this embodiment uses the historical complete construction data with a similarity higher than a preset similarity threshold as the target historical complete construction data.

[0111] The third step is to determine the difficulty of each construction stage in the construction task based on the construction time proportion curve and the target historical complete construction data.

[0112] It is understandable that, based on the relationship between the historical construction time ratio of each construction stage and the historical total construction time in the construction time ratio curve, the theoretical construction time ratio of the current construction stage can be directly obtained, but the theoretical construction time ratio is only preliminarily determined. Changes in different construction processes will affect the judgment of the difficulty between each construction stage. The difficulty of each construction stage is relative, so it is necessary to further determine the difficulty of each construction stage through comparison.

[0113] In a specific implementation, the difficulty of each construction stage in the construction task is determined according to the construction time proportion curve and the target historical complete construction data, including:

[0114] Firstly, according to the construction time proportion curve and the target historical complete construction data, multiple historical construction time proportions corresponding to each construction stage in the construction task are determined.

[0115] It is understandable that the total historical construction time of the target complete historical construction data is known. According to the total historical construction time, the corresponding two-dimensional data points can be found from the construction time proportion curve, and then the multiple historical construction time proportions corresponding to each construction stage in the construction task can be determined.

[0116] Assume that in this embodiment, The historical complete construction data of the four targets can be obtained according to the construction time ratio curve. The historical construction time ratio of the jth construction stage in the above four target historical complete construction data is .

[0117] Then, the weighted average of multiple historical construction time proportions corresponding to each construction stage is taken to calculate the average construction time proportion of each construction stage in the construction task.

[0118] In this embodiment, the average proportion of the construction time of the jth construction stage can be calculated as follows:

[0119] (4)

[0120] (5)

[0121] In the formula, Indicates The average proportion of construction time in each construction phase is: Indicates the existence of The number of target historical complete construction data for each construction phase, Indicates The first of the complete construction data of the target history The historical construction duration of each construction phase accounts for Indicates The weight of the complete historical construction data of each target, Indicates The similarity between the construction process of the target's historical complete construction data and the construction process of the current building construction task, Indicates the current construction task and The number of different construction stages in the target historical complete construction data, Indicates There are different construction phases and The number of construction phases that exist in all target historical complete construction data, Indicates The similarity between the construction process of the target's historical complete construction data and the construction process of the current building construction task, Indicates The target has complete historical construction data. The historical construction duration of each construction phase accounts for express The weight value of Indicates The construction phase is The proportion of historical construction time in the historical complete construction data of each target, Indicates The construction phase The average proportion of historical construction time in the historical complete construction data of each target.

[0122] Finally, according to the average proportion of construction time in each construction stage, the difficulty of each construction stage in the construction task is calculated.

[0123] It is understandable that different construction processes will lead to changes in the difficulty of the same construction stage. For example, laying tiles first and then decorating the walls may increase the difficulty of construction.

[0124] In a specific implementation, the difficulty of each construction stage in the construction task is calculated according to the average proportion of the construction time of each construction stage, including:

[0125] First, the slope variance of the construction time proportion curve is determined, and the slope variance is normalized to obtain the first coefficient.

[0126] Then, based on the construction time proportion curve, the target construction time proportion of each construction stage under the building construction task is determined.

[0127] Next, based on the first coefficient, the target construction time ratio and the average construction time ratio, the estimated construction time ratio of each construction stage in the construction task is calculated.

[0128] In this embodiment, The estimated construction duration ratio of each construction phase under the current construction task can be expressed as follows:

[0129] (6)

[0130] In the formula, Indicates The proportion of the estimated construction time of each construction phase under the current construction task, It represents the slope variance of the construction time ratio curve. The larger the slope variance, the worse the correlation between the change in the total historical construction time and the historical construction time ratio. () represents the normalization function, The slope variance of the construction time ratio curve The normalized value, i.e. the first coefficient. Indicates The target construction time proportion of each construction phase in the construction time proportion curve, Indicates The average proportion of construction time in each construction phase.

[0131] Subsequently, the estimated construction time proportions of each construction stage in the construction task are summed up to obtain the sum of the time proportions.

[0132] Finally, the estimated construction time proportion of each construction stage is divided by the sum of the construction time proportions to calculate the difficulty of each construction stage in the construction task.

[0133] In this embodiment, The difficulty of each construction stage in the current construction task can be expressed as follows:

[0134] (7)

[0135] In the formula, Indicates The difficulty of each construction stage, Indicates The proportion of the estimated construction time of each construction phase under the current construction task, represents the number of construction stages in the current building construction task, Indicates The proportion of the estimated construction time of each construction phase under the current construction task.

[0136] In one embodiment, based on the actual construction duration, the estimated total construction duration, and the virtual construction duration, determining the construction progress status of the current construction phase in the construction task specifically includes:

[0137] The first step is to calculate the construction time difference based on the actual construction time and the virtual construction time.

[0138] In this embodiment, the construction time difference can be obtained by subtracting the actual construction time from the virtual construction time.

[0139] The second step is to calculate the time difference comparison threshold based on the actual construction time and the estimated total construction time.

[0140] In a specific implementation, the time difference comparison threshold is calculated based on the actual construction time and the estimated total construction time, which specifically includes:

[0141] First, the estimated total construction time is subtracted from the actual construction time to calculate the remaining construction time.

[0142] Then, the remaining construction time is divided by the estimated total construction time to calculate the remaining time ratio.

[0143] Finally, the remaining duration ratio is normalized to obtain the time difference comparison threshold.

[0144] The third step is to compare the construction time difference with the time difference comparison threshold to obtain the comparison result.

[0145] In this embodiment, the comparison results can be divided into three situations. The first situation is that the construction time difference is greater than the time difference comparison threshold, the second situation is that the construction time difference is less than the time difference comparison threshold, and the third situation is that the construction time difference is equal to the time difference comparison threshold.

[0146] The fourth step is to determine the construction progress status of the current construction phase in the construction task based on the comparison results.

[0147] In a specific implementation, determining the construction progress status of the current construction phase in the building construction task according to the comparison result includes:

[0148] If the construction time difference is greater than the time difference comparison threshold, the construction progress status of the current construction phase in the construction task is determined to be overdue.

[0149] If the construction time difference is less than the time difference comparison threshold, the construction progress status of the current construction phase in the construction task is determined to be ahead of schedule.

[0150] If the construction time difference is equal to the time difference comparison threshold, it is determined that the construction progress status of the current construction phase in the construction task is normal.

[0151] In this embodiment, if the construction is overdue, the construction progress can be adjusted by shortening the construction time of one or more subsequent unfinished construction stages. If the construction is ahead of schedule or normal, no intervention can be made while ensuring the construction quality, and the construction can continue according to the current construction progress.

[0152] The BIM-based construction progress management method provided by the present invention determines the virtual construction duration link corresponding to the virtual construction node, takes into account the difficulty of each construction stage in the construction task, makes the estimated construction progress more in line with the actual situation, and thus improves the reliability and accuracy of construction progress management.

[0153] Based on the same general inventive concept, the present invention also protects a BIM-based construction progress management system. The BIM-based construction progress management system provided by the present invention is described below. The BIM-based construction progress management system described below and the BIM-based construction progress management method described above can be referenced to each other.

[0154] See also Figure 4 , which shows a structural diagram of a BIM-based construction progress management system provided by an embodiment of the present invention, such as Figure 4 As shown, the BIM-based construction progress management system provided by the embodiment of the present invention specifically includes:

[0155] The acquisition module 210 is used to respectively acquire the actual three-dimensional model and the BIM simulation model corresponding to the construction task.

[0156] The matching module 220 is used to match the actual three-dimensional model with the BIM simulation model to determine the virtual construction node corresponding to the current construction node in the BIM simulation model.

[0157] The first processing module 230 is used to determine the actual construction duration corresponding to the current construction node and the estimated total construction duration of the construction task, and determine the difficulty of each construction stage in the construction task.

[0158] The second processing module 240 is used to determine the virtual construction duration corresponding to the virtual construction node according to the difficulty of each construction stage in the construction task and the estimated total construction duration of the construction task.

[0159] The third processing module 250 is used to determine the construction progress status of the current construction phase in the construction task based on the actual construction duration, the estimated total construction duration and the virtual construction duration.

[0160] The management module 260 is used to manage the construction progress of the building construction task according to the construction progress status of the current construction stage.

[0161] Regarding the system in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated again here.

[0162] It should be noted that the sequence of the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0163] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

Claims

1. A construction progress management method based on BIM, characterized in that: The method comprises: Obtain the actual three-dimensional model and BIM simulation model corresponding to the building construction task respectively; Matching the actual three-dimensional model with the BIM simulation model to determine a virtual construction node in the BIM simulation model corresponding to the current construction node; Determine the actual construction time corresponding to the current construction node and the estimated total construction time of the construction task, and determine the difficulty of each construction stage in the construction task; Determining the virtual construction duration corresponding to the virtual construction node according to the difficulty of each construction stage in the construction task and the estimated total construction duration of the construction task; Determine the construction progress status of the current construction phase in the construction task based on the actual construction duration, the estimated total construction duration and the virtual construction duration; Managing the construction progress of the building construction task according to the construction progress status of the current construction stage; Determine the difficulty of each construction phase in the building construction task, including: Acquire multiple historical complete construction data, and establish a construction duration ratio curve according to the multiple historical complete construction data; Extracting target historical complete construction data having a similar relationship with the building construction task from the plurality of historical complete construction data; Determine the difficulty of each construction stage in the construction task according to the construction time proportion curve and the target complete historical construction data; According to the plurality of historical complete construction data, a construction time proportion curve is established, including: Decomposing each of the historical complete construction data into construction phases to obtain each construction phase in each of the historical complete construction data and the historical construction duration of each construction phase; Determine the total historical construction duration corresponding to each historical complete construction data, and determine the proportion of the historical construction duration of each construction stage in different historical complete construction data; Constructing a plurality of two-dimensional data according to the total historical construction duration and the proportion of the historical construction duration; Fitting the multiple two-dimensional data to obtain a construction time proportion curve; Extracting target historical complete construction data having a similar relationship with the building construction task from the plurality of historical complete construction data includes: Calculate the similarity between each historical complete construction data and the building construction task respectively; Compare the similarity corresponding to each historical complete construction data with the preset similarity threshold to obtain a comparison result; The historical complete construction data whose similarity in the comparison result is higher than a preset similarity threshold is determined as the target historical complete construction data; According to the construction time proportion curve and the target historical complete construction data, the difficulty of each construction stage in the construction task is determined, including: Determine, according to the construction time proportion curve and the target historical complete construction data, a plurality of historical construction time proportions corresponding to each construction stage in the building construction task; Taking a weighted average of the multiple historical construction duration proportions corresponding to each construction stage, the average construction duration proportion of each construction stage in the building construction task is calculated; According to the average proportion of the construction time of each construction stage, the difficulty of each construction stage in the construction task is calculated.

2. The BIM-based construction progress management method according to claim 1 is characterized in that: According to the average proportion of the construction time of each construction stage, the difficulty of each construction stage in the construction task is calculated, including: Determine the slope variance of the construction time proportion curve, and normalize the slope variance to obtain a first coefficient; Based on the construction time proportion curve, determine the target construction time proportion of each construction stage under the building construction task; Based on the first coefficient, the target construction time ratio and the average of the construction time ratios, the estimated construction time ratio of each construction stage in the construction task is calculated; Sum the estimated construction time proportions of each construction phase in the construction task to obtain a sum of the time proportions; The estimated construction time ratio of each construction stage is divided by the sum of the time ratios to calculate the difficulty of each construction stage in the construction task.

3. The BIM-based construction progress management method according to claim 1 is characterized in that: Determining the construction progress status of the current construction phase in the construction task based on the actual construction duration, the estimated total construction duration, and the virtual construction duration includes: Calculate the construction time difference according to the actual construction time and the virtual construction time; Calculate a time difference comparison threshold according to the actual construction time and the estimated total construction time; Compare the construction time difference with the time difference comparison threshold to obtain a comparison result; According to the comparison result, the construction progress status of the current construction phase in the building construction task is determined.

4. The BIM-based construction progress management method according to claim 3 is characterized in that: The time difference comparison threshold is calculated based on the actual construction time and the estimated total construction time, including: The remaining construction time is calculated by subtracting the estimated total construction time from the actual construction time; The remaining construction time is divided by the estimated total construction time to calculate the remaining time ratio; The remaining time ratio is normalized to obtain a time difference comparison threshold.

5. The method for building construction progress management based on BIM according to claim 3 is characterized in that: According to the comparison result, the construction progress status of the current construction phase in the building construction task is determined, including: If the construction time difference is greater than the time difference comparison threshold, the construction progress status of the current construction phase in the construction task is determined to be overdue; If the construction time difference is less than the time difference comparison threshold, the construction progress status of the current construction phase in the construction task is determined to be ahead of schedule; If the construction time difference is equal to the time difference comparison threshold, it is determined that the construction progress status of the current construction phase in the construction task is normal.

6. A BIM-based construction progress management system, the system is used to implement the steps of any one of claims 1-5, characterized in that: The system comprises: An acquisition module is used to respectively acquire the actual three-dimensional model and the BIM simulation model corresponding to the building construction task; A matching module, used to match the actual three-dimensional model with the BIM simulation model, and determine a virtual construction node in the BIM simulation model corresponding to the current construction node; The first processing module is used to determine the actual construction time corresponding to the current construction node and the estimated total construction time of the building construction task, and determine the difficulty of each construction stage in the building construction task; The second processing module is used to determine the virtual construction duration corresponding to the virtual construction node according to the difficulty of each construction stage in the construction task and the estimated total construction duration of the construction task; A third processing module is used to determine the construction progress status of the current construction stage in the construction task based on the actual construction duration, the estimated total construction duration and the virtual construction duration; The management module is used to manage the construction progress of the building construction task according to the construction progress status of the current construction stage.

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