A full life cycle digital twin system and method based on BIM

Abstract

The present invention discloses a full life cycle digital twin system and method based on BIM, which relates to the field of construction; the system includes a virtual building modeling module, which uses BIM technology to establish a virtual building model; a data interaction and synchronization module, which uses the Internet of Things technology to achieve data interaction and synchronization between virtual buildings and actual buildings; a full life cycle management platform, which is used to integrate the data of the virtual building modeling module and the data interaction and synchronization module to manage the building life cycle; the method includes the following steps: establishing a virtual building model through the virtual building modeling module and integrating parameters; and collecting the construction status of the building in real time through the data interaction and synchronization module. The present invention can not only realize the information management of construction projects, but also enhance the depth and breadth of project management through the real-time and predictive nature of digital twins, and significantly improve the efficiency and quality of construction projects.

Description

Technical Field

[0001] The present invention relates to the field of construction, and in particular to a full life cycle digital twin system and method based on BIM. Background Art

[0002] BIM management in the construction industry plays an important role in construction management, such as:

[0003] Improve project construction efficiency: BIM technology can complete building modeling and design verification, improve traditional design and construction efficiency, save construction cycle, and thus improve building construction efficiency;

[0004] Improve design quality: BIM technology system models can effectively avoid common design errors, such as conflict detection, surface inspection, material verification and measurement, thereby improving the quality and operability of the design;

[0005] Improve construction quality and production capacity: BIM technology can help the construction industry improve construction quality and production efficiency by integrating information from various stages of building design, construction and operation, and realizing the whole process management of construction projects.

[0006] However, existing BIM applications have not yet fully realized information integration and real-time dynamic management of the entire life cycle of the project, and have the disadvantages of delayed updates and messy data.

[0007] To this end, the present invention proposes a full life cycle digital twin system and method based on BIM. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a full life cycle digital twin system and method based on BIM.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A full life cycle digital twin system based on BIM, including:

[0011] Virtual building modeling module, using BIM technology to build virtual building models;

[0012] Data interaction and synchronization module, which uses Internet of Things technology to realize data interaction and synchronization between virtual buildings and actual buildings;

[0013] The full life cycle management platform is used to integrate data from the virtual building modeling module and the data interaction and synchronization module to manage the building life cycle.

[0014] Preferably, the virtual building modeling module includes the following steps:

[0015] A1: Specify BIM modeling standards;

[0016] A11: Create a 3D model of the building based on the design drawings;

[0017] A12: Determine the building processing flow model according to the process drawings and process requirements;

[0018] A13: Determine the materials and prices of the building as a whole and each component according to the quotation;

[0019] A2: Model integration and coordination;

[0020] A21: Determine the naming rules and topological structure of the entire model based on the 3D model diagram, processing flow chart, materials and prices;

[0021] A22: Carry out building pre-processing according to the entire model structure and process flow, and optimize the process flow according to the collision and interference problems that occur during pre-processing.

[0022] Preferably: in the step A21, the topological structure is a tree structure, and the specific determination method thereof includes the following steps:

[0023] A212: Determine the level of the building based on the three-dimensional model of the building;

[0024] A213: Get the last level of part parameters, which include the material, specification, unit price and quantity of the part, and pack these data into a separate data block P;

[0025] A213: Get the parent structure of the part, normalize all the data blocks P under the parent structure, and then normalize them into a single data block Q;

[0026] A214: Aggregate the parent blocks according to step A213, and aggregate them level by level until the top level is reached.

[0027] Preferably: in the step A213, in each aggregation process, the method of normalizing the data blocks is different, which adopts any one of maximum-minimum normalization, Z-score normalization, decimal ratio normalization and Box-Cox transformation.

[0028] Preferably: the implementation method of the data interaction and synchronization module includes the following steps:

[0029] B1: During the construction process, real-time data on site is obtained through sensors, and the Internet of Things and data twin models are used to integrate data according to the topological structure of the virtual building model;

[0030] B2: The integrated data is transferred to the virtual building model. After rebuilding a blank building model, the blank building is constructed according to the integrated data to form a real-time building model.

[0031] Preferably: in the step B2, during the construction process, the system compares the building structure position and the building structure construction process in real time, and evaluates them by means of a threshold value. If the threshold value is exceeded, the construction worker is promptly reminded to make corrections.

[0032] Preferably: the working method of the full life cycle management platform comprises the following steps:

[0033] C1: Administrators can obtain virtual building models and real-time building models through the user interface built into the full life cycle management platform;

[0034] C2: Each tree node in the building model is clickable. After the administrator clicks the node, all the stored data and data records in the node will be displayed;

[0035] C3: Administrators can predict future construction durations through the construction duration prediction unit in the full life cycle management platform.

[0036] Preferably: in the step C3, the method for predicting the future construction period by the construction period prediction unit includes the following steps:

[0037] C31: Determine the collection time period t, which is set by the administrator and can be in units of hours, days, weeks or months;

[0038] C32: Taking the time period as the interval, obtain the construction influencing factors in each time interval, and compare the virtual building model with the real-time building model to obtain the proportional function σ of the construction factor and the construction difference;

[0039] C32: The actual construction period is then predicted based on the product of the proportional function σ and the construction period in the simulated building model.

[0040] Preferably: in the C32 step, where p i is the actual construction speed of the current time node pushed forward i collection time periods t, k i is the proportionality coefficient, and k i >k i-1 .

[0041] A method for using a full life cycle digital twin system based on BIM, comprising the following steps:

[0042] S1: Establish a virtual building model through the virtual building modeling module and integrate parameters;

[0043] S2: Real-time collection of building construction status through data interaction and synchronization modules;

[0044] S3: View, manage and predict the construction cycle through the full life cycle management platform.

[0045] The beneficial effects of the present invention are:

[0046] 1. The present invention can not only realize the information management of construction projects, but also enhance the depth and breadth of project management through the real-time and predictive nature of digital twins, and significantly improve the efficiency and quality of construction projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a BIM-based full life cycle digital twin system architecture diagram proposed by the present invention;

[0048] Figure 2 This is a flow chart of the method of using the BIM-based full life cycle digital twin system proposed in the present invention. DETAILED DESCRIPTION

[0049] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] Embodiment 1:

[0052] A full life cycle digital twin system based on BIM, which includes:

[0053] Virtual building modeling module, using BIM technology to build virtual building models;

[0054] Data interaction and synchronization module, which uses Internet of Things technology to realize data interaction and synchronization between virtual buildings and actual buildings;

[0055] The full life cycle management platform is used to integrate data from the virtual building modeling module and the data interaction and synchronization module to manage the building life cycle.

[0056] The virtual building modeling module includes the following steps:

[0057] A1: Specify BIM modeling standards;

[0058] A11: Create a 3D model of the building based on the design drawings;

[0059] A12: Determine the building processing flow model according to the process drawings and process requirements;

[0060] A13: Determine the materials and prices of the building as a whole and each component according to the quotation;

[0061] A2: Model integration and coordination;

[0062] A21: Determine the naming rules and topological structure of the entire model based on the 3D model diagram, processing flow chart, materials and prices;

[0063] A22: Carry out building pre-processing according to the entire model structure and process flow, and optimize the process flow according to the collision and interference problems that occur during pre-processing.

[0064] In the step A21, the bottom layer of the naming rule adopts the component name.

[0065] In step A21, the topological structure is a tree structure, and the specific determination method thereof includes the following steps:

[0066] A212: According to the 3D model of the building, determine the level of the building. For example, the building includes the primary building body, which includes the secondary frame, doors and windows, and ceiling. The secondary frame includes horizontal beams, longitudinal beams, and walls. The secondary doors and windows include doors and windows. The secondary ceiling includes tie rods, gussets, etc.

[0067] A213: Get the last level of part parameters, which include the material, specification, unit price and quantity of the part, and pack these data into a separate data block P;

[0068] A213: Get the parent structure of the part, normalize all the data blocks P under the parent structure, and then normalize them into a single data block Q;

[0069] A214: Aggregate the parent blocks according to step A213, and aggregate them level by level until the top level is reached.

[0070] Embodiment 2:

[0071] A full life cycle digital twin system based on BIM, which includes:

[0072] Virtual building modeling module, using BIM technology to build virtual building models;

[0073] Data interaction and synchronization module, which uses Internet of Things technology to realize data interaction and synchronization between virtual buildings and actual buildings;

[0074] The full life cycle management platform is used to integrate data from the virtual building modeling module and the data interaction and synchronization module to manage the building life cycle.

[0075] The virtual building modeling module includes the following steps:

[0076] A1: Specify BIM modeling standards;

[0077] A11: Create a 3D model of the building based on the design drawings;

[0078] A12: Determine the building processing flow model according to the process drawings and process requirements;

[0079] A13: Determine the materials and prices of the building as a whole and each component according to the quotation;

[0080] A2: Model integration and coordination;

[0081] A21: Determine the naming rules and topological structure of the entire model based on the 3D model diagram, processing flow chart, materials and prices;

[0082] A22: Carry out building pre-processing according to the entire model structure and process flow, and optimize the process flow according to the collision and interference problems that occur during pre-processing.

[0083] In the step A21, the bottom layer of the naming rule adopts the component name.

[0084] In step A21, the topological structure is a tree structure, and the specific determination method thereof includes the following steps:

[0085] A212: According to the 3D model of the building, determine the level of the building. For example, the building includes the primary building body, which includes the secondary frame, doors and windows, and ceiling. The secondary frame includes horizontal beams, longitudinal beams, and walls. The secondary doors and windows include doors and windows. The secondary ceiling includes tie rods, gussets, etc.

[0086] A213: Get the last level of part parameters, which include the material, specification, unit price and quantity of the part, and pack these data into a separate data block P;

[0087] A213: Get the parent structure of the part, normalize all the data blocks P under the parent structure, and then convert them into a single data block Q again;

[0088] A214: Aggregate the parent blocks according to step A213, and aggregate them level by level until the top level is reached.

[0089] In the A213 step, the normalization step adopts Box-Cox transformation, and the Box-Cox transformation includes the following steps:

[0090] D1: Determine a λ value;

[0091] D2: Convert according to the formula (x^λ-1) / λ (when λ≠0) or log(x) (when λ=0);

[0092] In the D2 step, λ is determined by maximum likelihood estimation or cross validation.

[0093] Embodiment 3:

[0094] A full life cycle digital twin system based on BIM, which includes:

[0095] Virtual building modeling module, using BIM technology to build virtual building models;

[0096] Data interaction and synchronization module, which uses Internet of Things technology to realize data interaction and synchronization between virtual buildings and actual buildings;

[0097] The full life cycle management platform is used to integrate data from the virtual building modeling module and the data interaction and synchronization module to manage the building life cycle.

[0098] The virtual building modeling module includes the following steps:

[0099] A1: Specify BIM modeling standards;

[0100] A11: Create a 3D model of the building based on the design drawings;

[0101] A12: Determine the building processing flow model according to the process drawings and process requirements;

[0102] A13: Determine the materials and prices of the building as a whole and each component according to the quotation;

[0103] A2: Model integration and coordination;

[0104] A21: Determine the naming rules and topological structure of the entire model based on the 3D model diagram, processing flow chart, materials and prices;

[0105] A22: Carry out building pre-processing according to the entire model structure and process flow, and optimize the process flow according to the collision and interference problems that occur during pre-processing.

[0106] In the step A21, the bottom layer of the naming rule adopts the component name.

[0107] In step A21, the topological structure is a tree structure, and the specific determination method thereof includes the following steps:

[0108] A212: According to the 3D model of the building, determine the level of the building. For example, the building includes the primary building body, which includes the secondary frame, doors and windows, and ceiling. The secondary frame includes horizontal beams, longitudinal beams, and walls. The secondary doors and windows include doors and windows. The secondary ceiling includes tie rods, gussets, etc.

[0109] A213: Get the last level of part parameters, which include the material, specification, unit price and quantity of the part, and pack these data into a separate data block P;

[0110] A213: Get the parent structure of the part, normalize all the data blocks P under the parent structure, and then normalize them into a single data block Q;

[0111] A214: Aggregate the parent blocks according to step A213, and aggregate them level by level until the top level is reached.

[0112] In the A213 step, the normalization step adopts decimal ratio normalization, and the decimal ratio normalization includes the following steps:

[0113] C1: Select an integer value k whose absolute value is less than 1;

[0114] C2: The data is then scaled to a fixed decimal point using the formula x / 10^k.

[0115] Embodiment 4:

[0116] A full life cycle digital twin system based on BIM, which includes:

[0117] Virtual building modeling module, using BIM technology to build virtual building models;

[0118] Data interaction and synchronization module, which uses Internet of Things technology to realize data interaction and synchronization between virtual buildings and actual buildings;

[0119] The full life cycle management platform is used to integrate data from the virtual building modeling module and the data interaction and synchronization module to manage the building life cycle.

[0120] The virtual building modeling module includes the following steps:

[0121] A1: Specify BIM modeling standards;

[0122] A11: Create a 3D model of the building based on the design drawings;

[0123] A12: Determine the building processing flow model according to the process drawings and process requirements;

[0124] A13: Determine the materials and prices of the building as a whole and each component according to the quotation;

[0125] A2: Model integration and coordination;

[0126] A21: Determine the naming rules and topological structure of the entire model based on the 3D model diagram, processing flow chart, materials and prices;

[0127] A22: Carry out building pre-processing according to the entire model structure and process flow, and optimize the process flow according to the collision and interference problems that occur during pre-processing.

[0128] In the step A21, the bottom layer of the naming rule adopts the component name.

[0129] In step A21, the topological structure is a tree structure, and the specific determination method thereof includes the following steps:

[0130] A212: According to the 3D model of the building, determine the level of the building. For example, the building includes the primary building body, which includes the secondary frame, doors and windows, and ceiling. The secondary frame includes horizontal beams, longitudinal beams, and walls. The secondary doors and windows include doors and windows. The secondary ceiling includes tie rods, gussets, etc.

[0131] A213: Get the last level of part parameters, which include the material, specification, unit price and quantity of the part, and pack these data into a separate data block P;

[0132] A213: Get the parent structure of the part, normalize all the data blocks P under the parent structure, and then normalize them into a single data block Q;

[0133] A214: Aggregate the parent blocks according to step A213, and aggregate them level by level until the top level is reached.

[0134] In the A213 step, the normalization step adopts Z-score normalization, and the Z-score normalization includes the following steps:

[0135] B1: First calculate the mean (μ) and standard deviation (σ) of the data set;

[0136] B2: Convert each data point x to a standard normal distribution using the formula (x-μ) / σ.

[0137] Embodiment 5:

[0138] A full life cycle digital twin system based on BIM, which includes:

[0139] Virtual building modeling module, using BIM technology to build virtual building models;

[0140] Data interaction and synchronization module, which uses Internet of Things technology to realize data interaction and synchronization between virtual buildings and actual buildings;

[0141] The full life cycle management platform is used to integrate data from the virtual building modeling module and the data interaction and synchronization module to manage the building life cycle.

[0142] The virtual building modeling module includes the following steps:

[0143] A1: Specify BIM modeling standards;

[0144] A11: Create a 3D model of the building based on the design drawings;

[0145] A12: Determine the building processing flow model according to the process drawings and process requirements;

[0146] A13: Determine the materials and prices of the building as a whole and each component according to the quotation;

[0147] A2: Model integration and coordination;

[0148] A21: Determine the naming rules and topological structure of the entire model based on the 3D model diagram, processing flow chart, materials and prices;

[0149] A22: Carry out building pre-processing according to the entire model structure and process flow, and optimize the process flow according to the collision and interference problems that occur during pre-processing.

[0150] In the step A21, the bottom layer of the naming rule adopts the component name.

[0151] In step A21, the topological structure is a tree structure, and the specific determination method thereof includes the following steps:

[0152] A212: According to the 3D model of the building, determine the level of the building. For example, the building includes the primary building body, which includes the secondary frame, doors and windows, and ceiling. The secondary frame includes horizontal beams, longitudinal beams, and walls. The secondary doors and windows include doors and windows. The secondary ceiling includes tie rods, gussets, etc.

[0153] A213: Get the last level of part parameters, which include the material, specification, unit price and quantity of the part, and pack these data into a separate data block P;

[0154] A213: Get the parent structure of the part, normalize all the data blocks P under the parent structure, and then normalize them into a single data block Q;

[0155] A214: Aggregate the parent blocks according to step A213, and aggregate them level by level until the top level is reached.

[0156] In the A213 step, the normalization step adopts maximum-minimum normalization, and the maximum-minimum normalization includes the following steps:

[0157] A1: First, find the minimum value (min) and maximum value (max) in the data set;

[0158] A2: Then, use the formula (x-min) / (max-min) to convert each data point x to the interval [0,1].

[0159] Embodiment 6:

[0160] A full life cycle digital twin system based on BIM, which includes:

[0161] Virtual building modeling module, using BIM technology to build virtual building models;

[0162] Data interaction and synchronization module, which uses Internet of Things technology to realize data interaction and synchronization between virtual buildings and actual buildings;

[0163] The full life cycle management platform is used to integrate data from the virtual building modeling module and the data interaction and synchronization module to manage the building life cycle.

[0164] The virtual building modeling module includes the following steps:

[0165] A1: Specify BIM modeling standards;

[0166] A11: Create a 3D model of the building based on the design drawings;

[0167] A12: Determine the building processing flow model according to the process drawings and process requirements;

[0168] A13: Determine the materials and prices of the building as a whole and each component according to the quotation;

[0169] A2: Model integration and coordination;

[0170] A21: Determine the naming rules and topological structure of the entire model based on the 3D model diagram, processing flow chart, materials and prices;

[0171] A22: Carry out building pre-processing according to the entire model structure and process flow, and optimize the process flow according to the collision and interference problems that occur during pre-processing.

[0172] In the step A21, the bottom layer of the naming rule adopts the component name.

[0173] In step A21, the topological structure is a tree structure, and the specific determination method thereof includes the following steps:

[0174] A212: According to the 3D model of the building, determine the level of the building. For example, the building includes the primary building body, which includes the secondary frame, doors and windows, and ceiling. The secondary frame includes horizontal beams, longitudinal beams, and walls. The secondary doors and windows include doors and windows. The secondary ceiling includes tie rods, gussets, etc.

[0175] A213: Get the last level of part parameters, which include the material, specification, unit price and quantity of the part, and pack these data into a separate data block P;

[0176] A213: Get the parent structure of the part, normalize all the data blocks P under the parent structure, and then convert them into a single data block Q again;

[0177] A214: Aggregate the parent blocks according to step A213, and aggregate them level by level until the top level is reached.

[0178] In the step A213, in each aggregation process, the method of normalizing the data block is different, which adopts any one of maximum-minimum normalization, Z-score normalization, decimal ratio normalization and Box-Cox transformation.

[0179] The maximum-minimum normalization comprises the following steps:

[0180] A1: First, find the minimum value (min) and maximum value (max) in the data set;

[0181] A2: Then, use the formula (x-min) / (max-min) to convert each data point x to the interval [0,1].

[0182] The Z-score normalization includes the following steps:

[0183] B1: First calculate the mean (μ) and standard deviation (σ) of the data set;

[0184] B2: Convert each data point x to a standard normal distribution using the formula (x-μ) / σ.

[0185] The decimal ratio normalization comprises the following steps:

[0186] C1: Select an integer value k whose absolute value is less than 1;

[0187] C2: The data is then scaled to a fixed decimal point using the formula x / 10^k.

[0188] The Box-Cox transformation includes the following steps:

[0189] D1: Determine a λ value;

[0190] D2: Convert according to the formula (x^λ-1) / λ (when λ≠0) or log(x) (when λ=0);

[0191] In the D2 step, λ is determined by maximum likelihood estimation or cross validation.

[0192] The implementation method of the data interaction and synchronization module includes the following steps:

[0193] B1: During the construction process, real-time data on site is obtained through sensors, and the Internet of Things and data twin models are used to integrate data according to the topological structure of the virtual building model;

[0194] B2: The integrated data is transferred to the virtual building model. After rebuilding a blank building model, the blank building is constructed according to the integrated data to form a real-time building model.

[0195] In the step B2, during the construction process, the system compares the building structure position and the building structure construction process in real time, and evaluates them using a threshold value. If the threshold value is exceeded, the construction worker is promptly reminded to make corrections.

[0196] The working method of the full life cycle management platform includes the following steps:

[0197] C1: Administrators can obtain virtual building models and real-time building models through the user interface built into the full life cycle management platform;

[0198] C2: Each tree node in the building model is clickable. After the administrator clicks the node, all the stored data and data records in the node will be displayed;

[0199] C3: Administrators can predict future construction durations through the construction duration prediction unit in the full life cycle management platform.

[0200] In the step C3, the method for predicting the future construction period by the construction period prediction unit includes the following steps:

[0201] C31: Determine the collection time period t, which is set by the administrator and can be in units of hours, days, weeks or months;

[0202] C32: Taking the time period as the interval, obtain the construction influencing factors in each time interval, and compare the virtual building model with the real-time building model to obtain the proportional function σ of the construction factor and the construction difference;

[0203] C32: The actual construction period is then predicted based on the product of the proportional function σ and the construction period in the simulated building model.

[0204] In the C32 step, P is the sum of previous construction time, and Q is the sum of previous planning time.

[0205] Embodiment 7:

[0206] A full life cycle digital twin system based on BIM, which includes:

[0207] Virtual building modeling module, using BIM technology to build virtual building models;

[0208] Data interaction and synchronization module, which uses Internet of Things technology to realize data interaction and synchronization between virtual buildings and actual buildings;

[0209] The full life cycle management platform is used to integrate data from the virtual building modeling module and the data interaction and synchronization module to manage the building life cycle.

[0210] The virtual building modeling module includes the following steps:

[0211] A1: Specify BIM modeling standards;

[0212] A11: Create a 3D model of the building based on the design drawings;

[0213] A12: Determine the building processing flow model according to the process drawings and process requirements;

[0214] A13: Determine the materials and prices of the building as a whole and each component according to the quotation;

[0215] A2: Model integration and coordination;

[0216] A21: Determine the naming rules and topological structure of the entire model based on the 3D model diagram, processing flow chart, materials and prices;

[0217] A22: Carry out building pre-processing according to the entire model structure and process flow, and optimize the process flow according to the collision and interference problems that occur during pre-processing.

[0218] In the step A21, the bottom layer of the naming rule adopts the component name.

[0219] In step A21, the topological structure is a tree structure, and the specific determination method thereof includes the following steps:

[0220] A212: According to the 3D model of the building, determine the level of the building. For example, the building includes the primary building body, which includes the secondary frame, doors and windows, and ceiling. The secondary frame includes horizontal beams, longitudinal beams, and walls. The secondary doors and windows include doors and windows. The secondary ceiling includes tie rods, gussets, etc.

[0221] A213: Get the last level of part parameters, which include the material, specification, unit price and quantity of the part, and pack these data into a separate data block P;

[0222] A213: Get the parent structure of the part, normalize all the data blocks P under the parent structure, and then normalize them into a single data block Q;

[0223] A214: Aggregate the parent blocks according to step A213, and aggregate them level by level until the top level is reached.

[0224] In the step A213, in each aggregation process, the method of normalizing the data block is different, which adopts any one of maximum-minimum normalization, Z-score normalization, decimal ratio normalization and Box-Cox transformation.

[0225] The maximum-minimum normalization comprises the following steps:

[0226] A1: First, find the minimum value (min) and maximum value (max) in the data set;

[0227] A2: Then, use the formula (x-min) / (max-min) to convert each data point x to the interval [0,1].

[0228] The Z-score normalization includes the following steps:

[0229] B1: First calculate the mean (μ) and standard deviation (σ) of the data set;

[0230] B2: Convert each data point x to a standard normal distribution using the formula (x-μ) / σ.

[0231] The decimal ratio normalization comprises the following steps:

[0232] C1: Select an integer value k whose absolute value is less than 1;

[0233] C2: The data is then scaled to a fixed decimal point using the formula x / 10^k.

[0234] The Box-Cox transformation includes the following steps:

[0235] D1: Determine a λ value;

[0236] D2: Convert according to the formula (x^λ-1) / λ (when λ≠0) or log(x) (when λ=0);

[0237] In the D2 step, λ is determined by maximum likelihood estimation or cross validation.

[0238] The implementation method of the data interaction and synchronization module includes the following steps:

[0239] B1: During the construction process, real-time data on site is obtained through sensors, and the Internet of Things and data twin models are used to integrate data according to the topological structure of the virtual building model;

[0240] B2: The integrated data is transferred to the virtual building model. After rebuilding a blank building model, the blank building is constructed according to the integrated data to form a real-time building model.

[0241] In the step B2, during the construction process, the system compares the building structure position and the building structure construction process in real time, and evaluates them using a threshold value. If the threshold value is exceeded, the construction worker is promptly reminded to make corrections.

[0242] The working method of the full life cycle management platform includes the following steps:

[0243] C1: Administrators can obtain virtual building models and real-time building models through the user interface built into the full life cycle management platform;

[0244] C2: Each tree node in the building model is clickable. After the administrator clicks the node, all the stored data and data records in the node will be displayed;

[0245] C3: Administrators can predict future construction durations through the construction duration prediction unit in the full life cycle management platform.

[0246] In the step C3, the method for predicting the future construction period by the construction period prediction unit includes the following steps:

[0247] C31: Determine the collection time period t, which is set by the administrator and can be in units of hours, days, weeks or months;

[0248] C32: Taking the time period as the interval, obtain the construction influencing factors in each time interval, and compare the virtual building model with the real-time building model to obtain the proportional function σ of the construction factor and the construction difference;

[0249] C32: The actual construction period is then predicted based on the product of the proportional function σ and the construction period in the simulated building model.

[0250] In the C32 step, where p i is the actual construction speed of the current time node pushed forward i collection time periods t, k i is the proportionality coefficient, and k i >k i-1 .

[0251] Embodiment 8:

[0252] A method for using a full life cycle digital twin system based on BIM, comprising the following steps:

[0253] S1: Establish a virtual building model through the virtual building modeling module and integrate parameters;

[0254] S2: Real-time collection of building construction status through data interaction and synchronization modules;

[0255] S3: View, manage and predict the construction cycle through the full life cycle management platform.

[0256] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A full life cycle digital twin system based on BIM, characterized in that: It includes: Virtual building modeling module, using BIM technology to build virtual building models; Data interaction and synchronization module, which uses Internet of Things technology to realize data interaction and synchronization between virtual buildings and actual buildings; The full life cycle management platform is used to integrate the data of the virtual building modeling module and the data interaction and synchronization module to manage the building life cycle; The working method of the full life cycle management platform includes the following steps: C1: The administrator obtains the virtual building model and the real-time building model through the user interface built into the full life cycle management platform; C2: Each tree node in the building model is clickable. After the administrator clicks the node, all the stored data and data records in the node are displayed; C3: The administrator predicts the future construction period through the construction period prediction unit in the full life cycle management platform; In the step C3, the method for predicting the future construction period by the construction period prediction unit includes the following steps: C31: Determine the collection time period t, where t is set by the administrator; C32: Take the time period as the interval, obtain the construction influencing factors in each time interval, and compare the virtual building model with the real-time building model to obtain the proportional function of the construction factor and the construction difference ; C32: Then according to the proportional function and the product of the construction period in the simulated building model to predict the actual construction period; In the C32 step, ,in is the actual construction speed of the current time node pushed forward i collection time periods t, is the proportionality coefficient, and .

2. According to the BIM-based full life cycle digital twin system according to claim 1, it is characterized in that: The virtual building modeling module includes the following steps: A1: Specify BIM modeling standards; A11: Create a 3D model of the building based on the design drawings; A12: Determine the construction process model based on process drawings and process requirements; A13: Determine the materials and prices of the building as a whole and each component according to the quotation; A2: Model integration and coordination; A21: Determine the naming rules and topological structure of the entire model based on the 3D model diagram, processing flow chart, materials and prices; A22: Carry out building pre-processing according to the entire model structure and process flow, and optimize the process flow according to the collision and interference problems that occur during pre-processing.

3. According to the BIM-based full life cycle digital twin system according to claim 2, it is characterized in that: In step A21, the topological structure is a tree structure, and the specific determination method thereof includes the following steps: A212: Determine the level of the building based on the 3D model of the building; A213: Get the last level of part parameters, which include the material, specification, unit price and quantity of the part, and pack these data into a separate data block P; A213: Get the parent structure of the part, normalize all the data blocks P under the parent structure, and then convert them into a single data block Q again; A214: Aggregate the parent blocks according to step A213, and aggregate them level by level until the top level is reached.

4. According to the BIM-based full life cycle digital twin system of claim 3, it is characterized in that: In the step A213, in each aggregation process, the method of normalizing the data block is different, which adopts any one of maximum-minimum normalization, Z-score normalization, decimal ratio normalization and Box-Cox transformation.

5. The BIM-based full life cycle digital twin system according to claim 1, characterized in that: The implementation method of the data interaction and synchronization module includes the following steps: B1: During the construction process, real-time data on site is obtained through sensors, and the Internet of Things and data twin models are used to integrate data according to the topological structure of the virtual building model; B2: The integrated data is transferred to the virtual building model. After rebuilding a blank building model, the blank building is constructed according to the integrated data to form a real-time building model.

6. A BIM-based full life cycle digital twin system according to claim 5, characterized in that: In the step B2, during the construction process, the system compares the building structure position and the building structure construction process in real time, and evaluates them using a threshold value. If the threshold value is exceeded, the construction worker is promptly reminded to make corrections.

7. A method for using a BIM-based full life cycle digital twin system, using the BIM-based full life cycle digital twin system according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: Establish a virtual building model through the virtual building modeling module and integrate parameters; S2: Real-time collection of building construction status through data interaction and synchronization modules; S3: View, manage and predict the construction cycle through the full life cycle management platform.

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