Building engineering safety management method and system based on BIM

Abstract

The invention relates to the field of engineering safety, in particular to a BIM-based construction engineering safety management method and system. The method comprises the following steps: dividing a construction process into step-level procedures according to obtained building engineering construction data, obtaining engineering characteristic data and construction tool data, analyzing the building engineering construction data, and constructing a component space range and multi-dimensional mapping relation; on the basis of the component space range and the engineering feature data, representing each step-level process as a space occupation entity, and analyzing the space occupation entity on the basis of the step-level processes to generate a process space occupation entity set; generating a conflict coupling link diagram based on the multi-dimensional mapping relation and the process space occupation entity set; constructing a multi-segment conflict sequence based on the conflict coupling link diagram; constructing a time sequence evolution structure diagram according to the multi-segment conflict sequence; and analyzing the time sequence evolution structure diagram to generate a security collaboration strategy. The predictability and the collaboration of construction safety management can be improved.

Description

Technical Field

[0001] This invention relates to the field of engineering safety, specifically to a BIM-based method and system for building engineering safety management. Background Technology

[0002] In the process of construction management, as the scale and complexity of projects continue to increase, the problems of multi-process cross-operation and multi-equipment collaborative operation on the construction site are becoming increasingly prominent. In recent years, with the development of 3D modeling technology and data analysis technology, building information modeling has been widely used in many aspects such as construction modeling, progress simulation and component management, providing basic support for the visualization and digitalization of building construction.

[0003] Chinese Patent Publication No. CN119337354A discloses a method for BIM data security management in engineering construction, including: Step 1: verifying user identity through multi-factor authentication, wherein the multi-factor authentication includes username and password authentication, dynamic password authentication, and biometric authentication; Step 2: performing dynamic identity verification based on user behavior data, wherein the behavior data includes user operation path, time characteristics, device fingerprint, and geographical location; Step 3: dynamically allocating access permissions according to the user's role and task status in the BIM project; Step 4: predicting the user's permission requirements for future task stages through AI algorithms and automatically adjusting permissions.

[0004] In existing technologies, there is a lack of conflict identification mechanisms based on spatial behavior disturbance modeling, which makes it impossible to accurately express the dynamic interference relationship between processes in three-dimensional space. Existing methods generally fail to construct a systematic temporal conflict evolution structure, making it difficult to identify the progressive trend and evolution chain of conflicts. This leads to lagging safety management measures and an inability to achieve proactive early warning and dynamic adjustment of collaborative strategies, which are problems we need to solve. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a BIM-based method and system for building engineering safety management.

[0006] The technical solution of this invention: A BIM-based method for building construction safety management, comprising the following steps: S1. Obtain construction data for building engineering, divide the construction process into step-level procedures based on the construction data, obtain engineering characteristic data and construction tool data for each step-level procedure, analyze the construction data for building engineering, and construct the spatial range of components and multi-dimensional mapping relationships. S2. Based on the component spatial range and engineering feature data, each step-level process is represented as a space-occupying entity. The space-occupying entities are analyzed based on the step-level processes to generate a process space-occupying entity set. S3. Based on multidimensional mapping relationships and process space crowding entity sets, identify the conflict relationship between any two step-level processes and generate a conflict coupling link diagram; based on the conflict coupling link diagram, identify conflict-rich segments and behavior interference-dense segments in the link and construct a multi-segment conflict sequence; analyze the multi-segment conflict sequence and construct a time-series evolution structure diagram. S4. Analyze the temporal evolution structure diagram and generate a safe collaborative strategy.

[0007] Preferably, the process of acquiring construction data for building projects, dividing the construction process into step-level procedures based on the construction data, and acquiring engineering characteristic data and construction tool data for each step-level procedure includes: Construction engineering data includes construction process plans and construction components; the construction process plan is divided into multiple step-level procedures, which include start and end times, work content, tool operation sequence, and construction sequence; engineering characteristic data and construction tool data are extracted sequentially for each step-level procedure; engineering characteristic data includes operational behavior characteristics and action mode characteristics; action mode characteristics include action path, execution posture, main direction of action, and work duration type; construction tool data includes tool name, tool category, tool usage characteristics, and spatial extension range.

[0008] Preferably, the process of analyzing construction data to construct the spatial range of components and multidimensional mapping relationships includes: BIM technology is used to construct a corresponding three-dimensional spatial range for each construction component. Operational behavior characteristics, action mode characteristics, and construction tool data are mapped to the three-dimensional spatial range data of the construction components at each step level, establishing a spatial behavior mapping relationship. Based on the spatial extension range of the operational behavior, tool usage characteristics, and action path, a behavior disturbance envelope corresponding to the spatial behavior mapping relationship is constructed. The action path and three-dimensional spatial range of each construction tool under different action modes are analyzed, and the corresponding tool scope difference set is extracted. The data structure of the tool scope difference set includes tool ID, action mode ID, coverage space change vector, and action type identifier. The tool scope difference set is then associated one-to-one with the behavior disturbance envelope to construct a multi-dimensional mapping relationship.

[0009] Preferably, based on the component spatial range and engineering feature data, each step-level process is represented as a space-occupying entity. The process of analyzing the space-occupying entities based on the step-level processes to generate a set of process space-occupying entities is as follows: Based on the component spatial range, action mode characteristics, and operation behavior characteristics corresponding to each step-level process in the BIM model, the three-dimensional spatial range occupied by the step-level process is represented as a space-occupying entity; thus, a set of space-occupying entities is obtained. Based on the construction sequence recorded in the BIM model and the historical positioning data collected at the corresponding construction site, identify the step-level procedures with path deviation risks, obtain the historical construction path data of the corresponding step-level procedures, and extract the action trajectory of each step-level procedure according to the construction stage; construct a path disturbance feature set based on the changes in path curvature, directional deviation amplitude, and segment turning frequency under different construction conditions; and embed the path disturbance feature set into the component space range of each corresponding construction engineering component. Obtain tool stability records under various posture conditions. Based on the BIM model, construct a posture stability distribution map for each step-level process using the interpolation method, identify the spatial regions within the critical value range of tool stability, and mark them as posture unstable regions. Convert the marked posture unstable regions into continuous region data using the three-dimensional grid interpolation method, identify the tool stability record for each grid cell, and bind it to the space occupancy entity to construct the process space occupancy entity set.

[0010] Preferably, the process of identifying conflict relationships between any two step-level processes and generating a conflict coupling link diagram based on multi-dimensional mapping relationships and process space occupancy entity sets includes: Based on multidimensional mapping relationships and process space occupancy entity sets, the spatial and operational relationship between any two step-level processes is identified; based on the BIM model, the action coverage area and tool influence area of ​​each step-level process in three-dimensional space are constructed through component location information, construction sequence and tool usage annotations. Boolean volume overlap analysis is performed on the spatial encroachment entities of each step-level process to obtain the spatial volume overlap degree; the paths formed by each step-level process in the corresponding spatial encroachment entities are extracted and recorded as process action chains, and the existence of continuous path overlap segments within the action coverage area is identified to generate action chain overlap intervals; whether the tool operation points within the tool influence area have spatiotemporal intersection areas during execution is analyzed; if any two satisfy the following conditions: the overlap degree exceeds the set overlap threshold, the continuous segments of the overlap interval are greater than the set segment threshold, or the distance between the intersection points is less than the set safety distance, then a conflict relationship is determined to exist and recorded as a process pair; based on the step-level process sequence as the topology structure, process pairs with conflict relationships are used as node pairs to construct a conflict coupling link graph.

[0011] Preferably, the process of identifying conflict-rich segments and behaviorally disruptive segments in a link based on a conflict coupling link diagram, and constructing a multi-segment conflict sequence; and analyzing the multi-segment conflict sequence to construct a temporal evolution structure diagram includes: Based on the spatial voxel statistical analysis method, according to the interaction path segments of each node pair in the conflict coupling link diagram, the corresponding volume overlap ratio, motion trajectory overlap frequency, and tool intersection frequency are calculated. Combined with the construction timeline of the path segments, the local density distribution curve of conflict events is statistically analyzed to identify conflict-rich segments and behavior interference-dense segments. The link is divided into multiple high-frequency conflict trigger segments to generate multi-segment conflict sequences. Structural analysis is performed on the multi-segment conflict sequences to extract segments containing multiple operating tools, multiple node intersections, and multiple path branches, which are identified as high overlap segments within the chain. Based on the conflict activation sequence, the volume overlap ratio change value, motion trajectory overlap frequency, and tool intersection change frequency are extracted to construct a temporal distribution structure, and the local variability of each temporal distribution structure is statistically analyzed. Extract the node behavior states from the multi-segment conflict sequence to construct a set of state nodes; establish the state transition relationship between state nodes based on the construction sequence and tool operation sequence, and construct the temporal evolution structure diagram of the conflict chain.

[0012] Preferably, the process of analyzing the temporal evolution structure diagram and generating a security cooperation strategy includes: Based on the temporal evolution structure diagram, the nodes in the conflict coupling link diagram are divided into starting nodes, relay nodes, and ending nodes according to the link topology. The conflict activation sequence associated with each type of node is analyzed. By combining the link position of the corresponding node with the relationship between its preceding and following action sequences, the conflict progression characteristics are identified. The conflict progression characteristics refer to the changes in the frequency, impact, or spatial interference range of conflict events as the construction behavior of each node in the link progresses. Specifically, this is identified by the change rate of node conflict density, the amplitude of attitude disturbance fluctuations, and the change in the degree of spatial interference overlap. The number of conflict events of each node per unit time is counted to determine whether there is a trend of increasing conflict indicators of multiple consecutive nodes. For each link node, the degree of overlap of the behavioral disturbance envelope and the degree of time overlap at the current stage are combined to analyze the conflict categories caused by different tool operation behaviors at the corresponding stage; based on each conflict category and conflict progression characteristics, a safety collaboration strategy is constructed, which includes personnel collaboration adjustment strategy, construction path separation strategy and construction time adjustment strategy.

[0013] This invention also discloses a BIM-based building engineering safety management system, including a management center, which is communicatively connected to a data acquisition module, a spatial modeling module, a conflict analysis module, and a safety management module. The data acquisition module is used to acquire construction data of building projects, divide the construction process into step-level procedures based on the construction data, acquire the engineering characteristic data and construction tool data of each step-level procedure, analyze the construction data of building projects, and construct the spatial range of components and multi-dimensional mapping relationships. The spatial modeling module is used to represent each step-level process as a spatial occupancy entity based on the spatial range of the component and engineering feature data. Based on the step-level process, the spatial occupancy entity is analyzed to generate a process spatial occupancy entity set. The conflict analysis module is used to identify the conflict relationship between any two step-level processes based on multidimensional mapping relationships and process space crowding entity sets, and generate a conflict coupling link diagram; based on the conflict coupling link diagram, it identifies conflict-rich segments and behavior interference-dense segments in the link, and constructs a multi-segment conflict sequence; it analyzes the multi-segment conflict sequence and constructs a time-series evolution structure diagram. The security management module is used to analyze the temporal evolution structure diagram and generate security collaboration strategies.

[0014] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects: By constructing a spatial crowding entity set based on the spatial range of components, action mode characteristics, and operation behavior characteristics, and combining path disturbance characteristics and posture stability distribution map, the dynamic behavior of construction procedures in three-dimensional space is mapped into structured spatial objects. This can accurately capture the spatial overlap, tool interference, and behavior intersection phenomena between different procedures during construction, improve the granularity and identification accuracy of spatial conflict analysis, and provide a highly visualized and quantifiable basis for risk boundary judgment for safety management. By constructing a conflict coupling link diagram based on procedure pairs, extracting conflict-rich segments and behavior interference-dense segments in the link, and generating a multi-segment conflict sequence and temporal evolution structure diagram with temporal relationship, a comprehensive modeling of construction conflict from static relationship to dynamic evolution process is realized. Based on the conflict progression characteristics, a safety collaboration strategy is intelligently generated, which can identify potential high-risk procedure combinations in advance and provide suggestions for adjusting construction paths or time periods, significantly improving the predictive and proactive control capabilities in complex construction scenarios. Attached Figure Description

[0015] Figure 1 This is a flowchart of one embodiment of the present invention. Detailed Implementation

[0016] Example 1, as Figure 1 As shown, the present invention proposes a BIM-based building construction safety management method, which includes the following steps: S1. Obtain construction data for building engineering, divide the construction process into step-level procedures based on the construction data, obtain engineering characteristic data and construction tool data for each step-level procedure, analyze the construction data for building engineering, and construct the spatial range of components and multi-dimensional mapping relationships. S2. Based on the component spatial range and engineering feature data, each step-level process is represented as a space-occupying entity. The space-occupying entities are analyzed based on the step-level processes to generate a process space-occupying entity set. S3. Based on multidimensional mapping relationships and process space crowding entity sets, identify the conflict relationship between any two step-level processes and generate a conflict coupling link diagram; based on the conflict coupling link diagram, identify conflict-rich segments and behavior interference-dense segments in the link and construct a multi-segment conflict sequence; analyze the multi-segment conflict sequence and construct a time-series evolution structure diagram. S4. Analyze the temporal evolution structure diagram and generate a safe collaborative strategy.

[0017] It needs further explanation that, in the specific implementation process, the following steps are involved: acquiring construction data for the building project; dividing the construction process into step-level procedures based on this data; obtaining engineering characteristic data and construction tool data for each step-level procedure; analyzing the construction data; and constructing the spatial range of components and multi-dimensional mapping relationships. The construction data includes a construction process plan and construction components. The construction process plan is divided into multiple step-level procedures, each representing a single task unit within a specific time period or construction phase, including start and end times, work content, tool operation sequence, and construction sequence. Engineering characteristic data and construction tool data are extracted sequentially for each step-level procedure. The engineering characteristic data includes operational behavior characteristics and action mode characteristics. Operational behavior characteristics refer to the basic operational behaviors of construction personnel, such as hoisting, welding, binding, and painting. Action mode characteristics include the action path, execution posture, main direction of action, and work duration type, including but not limited to translational operations, rotational force application, and alternating operations. The construction tool data includes tool name, tool category, tool usage characteristics, and spatial extension range. BIM technology is used to construct a corresponding three-dimensional spatial range for each construction component. The three-dimensional spatial range of the construction component is expressed in the form of a three-dimensional bounding box in the standard BIM model definition, including position coordinates, size parameters, and component association identifiers. The operational behavior characteristics, action mode characteristics, and construction tool data of each step-level process are mapped to the three-dimensional spatial range data of the construction component affected by each step-level process, thus constructing a spatial behavior mapping relationship. The spatial behavior mapping relationship is associated with the three-dimensional spatial range, action mode characteristics, and operational behavior characteristics of the corresponding construction component, and is used to represent the action distribution state, operation path, and spatial action occupancy mode of the process on the specific component.

[0018] For spatial behavior mapping relationships, based on the spatial extension range of work behavior, tool usage characteristics, and action path, a behavior disturbance envelope region corresponding to the spatial behavior mapping relationship is constructed. The behavior disturbance envelope region is used to describe the range of spatial occupancy changes that may be caused by deviations in the operation of construction personnel, differences in tool running trajectories, or fluctuations in the work sequence during actual construction operations. The behavior disturbance envelope region is constructed by expanding the spatial volume unit on the basis of the three-dimensional spatial range of the construction engineering component, and records the spatial association with the construction engineering component and the disturbance source identifier. The disturbance source identifier includes behavior disturbance identifier, tool disturbance identifier, and component disturbance identifier. The action path and three-dimensional spatial range of each construction tool under different action modes are analyzed, and the corresponding tool scope difference set is extracted. The tool scope difference set represents the difference in spatial coverage of the same construction tool under different operation behaviors, which is used to represent the impact of the tool on the construction space when performing different operation behaviors. The data structure of the tool scope difference set includes tool ID, action mode ID, coverage space change vector and action type identifier. The tool scope difference set is associated one-to-one with the behavior perturbation envelope region. The tool scope space with an overlap greater than a preset threshold is matched with the perturbation envelope space to construct a multi-dimensional mapping relationship.

[0019] It should be further explained that, in the specific implementation process, based on the spatial range of components and engineering characteristic data, each step-level process is represented as a space-occupying entity. The process of analyzing the space-occupying entities based on the step-level processes to generate a set of process space-occupying entities is as follows: Based on the action mode characteristics and operational behavior characteristics of each step-level process within the component space, the three-dimensional space occupied by the step-level process is represented as a spatial occupancy entity. This spatial occupancy entity includes a spatial volume region, an action direction interval, and a set of tool operation points. The spatial volume region represents the three-dimensional geometric volume occupied by tools, workers, and the component itself during the process. The action direction interval identifies the range of change in the main direction of the construction action, typically consisting of the starting direction, ending direction, and intermediate transition angle interval. The set of tool operation points, based on tool type and construction method, extracts key contact points in the tool's contact with the component or its movement path. This results in a spatial occupancy entity set, which can be used to simulate the three-dimensional spatial distribution of each process under actual site conditions during construction. Based on the construction sequence recorded in the BIM model and the historical positioning data collected at the corresponding construction site, the path change trend of each construction sequence under different construction batches is compared and analyzed. Combined with the construction sequence where the path displacement deviation is greater than the set deviation threshold, the step-level procedures with path deviation risk are identified, the historical construction path data of the corresponding step-level procedures are obtained, and the action trajectory of each step-level procedure is extracted according to the construction stage. The step-level action trajectory includes the path point sequence, the path direction vector, and the path change rate.

[0020] Based on the changes in path curvature, directional deviation, and segment turning frequency under different construction conditions, a path disturbance feature set is constructed; combined with the component spatial range of each construction component during the construction process, the path disturbance feature set is embedded into the component spatial range of each corresponding construction component. Tool stability records under various posture conditions are acquired. These records include tool tilt angle, center of gravity offset, and support surface contact angle. Based on the BIM model, the distribution of tool stability records is analyzed for each step-level process within the corresponding standard posture action range. An attitude stability distribution map is constructed using the interpolation method to identify spatial regions within the critical value range of tool stability, which are then labeled as attitude unstable regions. The labeled attitude unstable regions are converted into continuous region data using a three-dimensional grid interpolation method. Tool stability records are identified for each grid cell and integrated with spatial occupancy entities. This ensures that the spatial occupancy entities corresponding to each process not only possess basic spatial position, action direction, and tool contact information, but also have the ability to predict action path offset and express the stability risk of posture operation, thus constructing a process spatial occupancy entity set.

[0021] It needs further explanation that, in the specific implementation process, based on the multi-dimensional mapping relationship and the process space crowding entity set, the conflict relationship between any two step-level processes is identified, and a conflict coupling link diagram is generated; based on the conflict coupling link diagram, conflict-rich segments and behavior interference-dense segments in the link are identified, and a multi-segment conflict sequence is constructed; the process of analyzing the multi-segment conflict sequence and constructing a temporal evolution structure diagram is as follows: Based on multidimensional mapping relationships and process space occupancy entity sets, the spatial and operational relationship between any two step-level processes is identified; based on the BIM model, the action coverage area and tool influence area of ​​each step-level process in three-dimensional space are constructed through component location information, construction sequence and tool usage annotations. Boolean volume overlap analysis is performed on the spatial encroachment entities of each step-level process to obtain the spatial volume overlap degree; the paths formed by each step-level process in the corresponding spatial encroachment entities are extracted and recorded as process action chains, and the existence of continuous path overlap segments within the action coverage area is identified to generate action chain overlap intervals; it is analyzed whether there are spatiotemporal intersection areas of tool operation points within the tool influence area during execution; if any two satisfy the following conditions: the overlap degree exceeds a set overlap threshold, the continuous segments of the overlap interval are greater than a set segment threshold, or the distance between the intersection points is less than a set safety distance, then a conflict relationship is determined to exist and recorded as a process pair; based on the step-level process sequence as the topological structure, process pairs with conflict relationships are used as node pairs to construct a conflict coupling link diagram, which is used to represent the implicit spatial conflicts or tool interference relationships that may occur during the execution of multiple step-level processes.

[0022] Based on spatial voxel statistical analysis, according to the interaction path segments of each node pair in the conflict coupling link diagram, the corresponding volume overlap ratio, motion trajectory overlap frequency, and tool intersection frequency are calculated. Combined with the construction timeline of the path segments, the local density distribution curve of conflict events is statistically analyzed to identify conflict-rich segments and behavior interference-dense segments. The link is divided into multiple high-frequency conflict trigger segments, generating multi-segment conflict sequences to accurately characterize high-risk areas with frequent operation intersections and path crossings in each segment. Structural analysis is performed on the multi-segment conflict sequences to extract segments containing multiple operation tools, multiple node intersections, and multiple path branches, which are identified as high-overlap segments within the chain. Based on the conflict activation sequences, the volume overlap ratio change value, motion trajectory overlap frequency, and tool intersection change frequency are extracted to construct a temporal distribution structure. The local variability of each temporal distribution structure is statistically analyzed. The local variability calculation method adopts the deviation index model to measure the fluctuation of the temporal distribution structure in the local sequence. Sequence segments with significantly increased local variability within a specified short period of time are identified as key areas where conflict mutations may occur and are marked in the link structure. The node behavior states in the multi-segment conflict sequence are extracted. The node behavior states include behavioral stages such as initiation, movement, positioning, construction operation, inspection and exit, which are used to describe the state nodes in the process of execution and construct a set of state nodes. Based on the construction sequence and tool operation sequence, the state transition relationship between state nodes is established, and the temporal evolution structure diagram of the conflict chain is constructed. The temporal evolution structure diagram reflects the logical relationship between each operation step in the construction process.

[0023] It should be further explained that, in the specific implementation process, the process of analyzing the temporal evolution structure diagram and generating a security cooperation strategy is as follows: Based on the temporal evolution structure diagram, the nodes in the conflict coupling link diagram are divided into starting nodes, relay nodes, and ending nodes according to the link topology. The conflict activation sequence associated with each type of node is analyzed. By combining the link position of the corresponding node with the relationship between its preceding and following action sequences, the conflict progression characteristics are identified. The conflict progression characteristics refer to the changes in the frequency, impact, or spatial interference range of conflict events as the construction behavior of each node in the link progresses. Specifically, this is identified by the change rate of node conflict density, the amplitude of attitude disturbance fluctuations, and the change in the degree of spatial interference overlap. The number of conflict events of each node per unit time is counted to determine whether there is a trend of increasing conflict indicators of multiple consecutive nodes. For each link node, the degree of overlap of the behavioral perturbation envelope and the degree of temporal overlap in the current stage are combined to analyze the conflict categories caused by different tool operation behaviors in the corresponding stage. The conflict categories include, but are not limited to, path overlap conflict, tool interference conflict and attitude space overlap conflict.

[0024] Based on various conflict categories and conflict progression characteristics, a safety collaboration strategy is constructed. This strategy includes personnel collaboration adjustment, construction path separation, and construction time adjustment. The personnel collaboration adjustment strategy, when identifying multiple processes simultaneously entering a high-conflict stage, generates collaborative operation suggestions between process execution personnel based on the degree of overlap of spatially occupying entities, the similarity of path disturbance trends, and overlapping areas of posture operation stability, prioritizing adjustments to operation processes with high-risk posture overlap. The construction path separation strategy, for path overlap conflict categories, combines the 3D spatial coordinate system information of the spatially occupying entity set with the path disturbance feature set to select process pairs in the link, generate path reconstruction suggestions, shift them to non-overlapping areas, and avoid new posture instability risks caused by path abrupt changes. The construction time adjustment strategy, for cases where conflict activation sequences overlap due to inconsistent construction rhythms, analyzes the overlap interval between the construction timetable and the conflict activation sequence, and adjusts the process time nodes. This collaboration strategy can be integrated and deployed in a BIM model.

[0025] Example 2: The BIM-based building engineering safety management system proposed in this invention is applied to the BIM-based building engineering safety management method described in Example 1. Specifically, it includes a management center, which is communicatively connected to a data acquisition module, a spatial modeling module, a conflict analysis module, and a safety management module. The data acquisition module is used to acquire construction data of building projects, divide the construction process into step-level procedures based on the construction data, acquire the engineering characteristic data and construction tool data of each step-level procedure, analyze the construction data of building projects, and construct the spatial range of components and multi-dimensional mapping relationships. The spatial modeling module is used to represent each step-level process as a spatial occupancy entity based on the spatial range of the component and engineering feature data. Based on the step-level process, the spatial occupancy entity is analyzed to generate a process spatial occupancy entity set. The conflict analysis module is used to identify the conflict relationship between any two step-level processes based on multidimensional mapping relationships and process space crowding entity sets, and generate a conflict coupling link diagram; based on the conflict coupling link diagram, it identifies conflict-rich segments and behavior interference-dense segments in the link, and constructs a multi-segment conflict sequence; it analyzes the multi-segment conflict sequence and constructs a time-series evolution structure diagram. The security management module is used to analyze the temporal evolution structure diagram and generate security collaboration strategies.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A BIM-based construction work safety management method, characterized by, The method comprises the following steps: S1, obtaining construction engineering construction data, and dividing the construction process into step-level procedures according to the construction engineering construction data, obtaining engineering characteristic data and construction tool data of each step-level procedure, analyzing the construction engineering construction data, and constructing component space range and multi-dimensional mapping relationship; S2, representing each step-level procedure as a space occupation entity based on the component space range and the engineering characteristic data, analyzing the space occupation entity based on the step-level procedure, and generating a process space occupation entity set; S3, identifying the conflict relationship between any two step-level procedures based on the multi-dimensional mapping relationship and the process space occupation entity set, generating a conflict coupling link graph, identifying conflict enrichment paragraphs and behavior interference dense paragraphs in the link based on the conflict coupling link graph, and constructing a multi-segment conflict sequence; analyzing the multi-segment conflict sequence, and constructing a time sequence evolution structure diagram; S4, analyzing the time sequence evolution structure diagram, and generating a safety coordination strategy.

2. The BIM-based construction project safety management method of claim 1, wherein, The process of obtaining construction engineering construction data and dividing the construction process into step-level procedures according to the construction engineering construction data, and obtaining engineering characteristic data and construction tool data of each step-level procedure comprises: The construction engineering construction data comprises construction process plan and construction engineering components; the construction process plan is divided into a plurality of step-level procedures, and the step-level procedure comprises start and end time, operation content, tool operation sequence and construction sequence; engineering characteristic data and construction tool data of each step-level procedure are extracted in sequence; the engineering characteristic data comprises operation behavior characteristic and action mode characteristic; the action mode characteristic comprises action path, execution posture, action main direction and operation duration type; the construction tool data comprises tool name, tool category, tool use characteristic and space extension range.

3. The BIM-based construction project safety management method of claim 2, wherein, The process of analyzing the construction engineering construction data, and constructing component space range and multi-dimensional mapping relationship comprises: a three-dimensional space range corresponding to each construction engineering component is constructed by BIM technology; the operation behavior characteristic, the action mode characteristic and the construction tool data are corresponded to the three-dimensional space range data of the construction engineering component acted by each step-level procedure, and a space behavior mapping relationship is constructed; based on the space behavior mapping relationship, a behavior disturbance envelope area corresponding to the space behavior mapping relationship is constructed based on the space extension range of the operation behavior, the tool use characteristic and the action path; the action path and the three-dimensional space range of each construction tool under different action modes are analyzed, and a corresponding tool action scope difference set is extracted, the data structure of the tool action scope difference set comprises tool ID, action mode ID, coverage space change vector and action type identifier; the tool action scope difference set is associated with the behavior disturbance envelope area one by one, and a multi-dimensional mapping relationship is constructed.

4. The BIM-based construction project safety management method of claim 3, wherein, The process of representing each step-level procedure as a space occupation entity based on the component space range and the engineering characteristic data, and analyzing the space occupation entity based on the step-level procedure, and generating a process space occupation entity set comprises: According to the corresponding component space range, action mode characteristics and operation behavior characteristics of each step-level process in the BIM model, the three-dimensional space range occupied by the step-level process is represented as a space occupation entity; a set of space occupation entities is obtained; Based on the recorded construction sequence in the BIM model and the historical positioning data collected on the corresponding construction site, the step-level process with a path deviation risk is identified, the historical construction path data of the corresponding step-level process is obtained, and the action trajectory of each step-level process is extracted according to the construction stage; based on the path curvature change, direction deviation amplitude and segment turning frequency under different construction conditions, a path disturbance feature set is constructed; the path disturbance feature set is embedded into the component space range of each corresponding construction engineering component; Obtain the tool stability record under multiple posture conditions, for each step-level process based on the BIM model, use the difference method to construct a posture stability distribution map, identify the space region within the tool stability critical value range, and mark it as a posture unstable region; the marked posture unstable region is converted into continuous region data by three-dimensional grid interpolation method, each grid cell is identified with tool stability record, and is integrated with space occupation entity, to construct a process space occupation entity set.

5. The BIM-based construction project safety management method of claim 4, wherein, Based on the multi-dimensional mapping relationship and the process space occupation entity set, the conflict relationship between any two step-level processes is identified, and the process of generating a conflict coupling link graph includes: Based on the multi-dimensional mapping relationship and the process space occupation entity set, the space and operation behavior relationship between any two step-level processes is identified; based on the BIM model, the action coverage area and tool influence area of each step-level process in the three-dimensional space are constructed through component position information, construction sequence and tool use annotation; Boolean volume overlap analysis is performed on the space occupation entity of each step-level process, and the space volume overlap degree is obtained; the path formed by each step-level process in the corresponding space occupation entity is extracted as a process action chain, whether there is a continuous path overlap segment in the action coverage area is identified, and an action chain overlap interval is generated; whether there is a space-time intersection area in the tool operation point in the tool influence area during execution is analyzed; if any of the following conditions is met: the overlap degree exceeds the set overlap threshold, the continuous segment of the overlap interval is greater than the set segment threshold, or the distance between the intersection points is less than the set safety distance, it is determined that there is a conflict relationship, and it is recorded as a process pair; taking the step-level process sequence as the basis of the topological structure, the process pairs with conflict relationship are taken as node pairs, and a conflict coupling link graph is constructed.

6. The BIM-based construction project safety management method of claim 5, wherein, Based on the conflict coupling link graph, the conflict enrichment paragraph and the behavior interference dense paragraph in the link are identified, and a multi-segment conflict sequence is constructed; The process of analyzing the multi-segment conflict sequence and constructing a time sequence evolution structure diagram includes: Based on the spatial voxel statistical analysis method, the volume overlap ratio, the action trajectory coincidence frequency and the tool intersection position occurrence number are calculated according to the interaction path paragraph of each node pair in the conflict coupling link diagram, the local density distribution curve of the conflict event is calculated by combining the construction time line of the path paragraph, the conflict rich paragraph and the behavior interference dense paragraph are identified, and the link is divided into multiple conflict high-frequency triggering segments to generate a multi-segment conflict sequence; the paragraph containing multiple operation tools, multiple node intersections and multiple path branches is extracted by performing structure analysis on the multi-segment conflict sequence, and the paragraph is identified as an intra-chain high-coincidence segment; the volume overlap ratio change value, the action trajectory coincidence frequency and the tool intersection change frequency are extracted based on the conflict activation sequence, the time sequence distribution structure is constructed, and the local variation degree of each time sequence distribution structure is calculated; The node behavior state in the multi-segment conflict sequence is extracted, and a state node set is constructed; Based on the construction sequence and the tool operation sequence, the state transition relationship between the state nodes is established, and a time sequence evolution structure diagram of the conflict chain is constructed.

7. The BIM-based construction project safety management method of claim 6, wherein, The process of generating a safety coordination strategy by analyzing the time sequence evolution structure diagram includes: Based on the time sequence evolution structure diagram, each node in the conflict coupling link diagram is divided into a starting node, a relay node and a terminating node according to the link topological structure, and the conflict activation sequence associated with each type of node is analyzed, the conflict progression characteristics are identified by combining the relationship between the link position of the corresponding node and the action sequence before and after it, the conflict progression characteristics refer to the change characteristics that the conflict event presents frequency increase, influence enhancement or spatial interference range expansion as the construction behavior of each node in the link advances, the conflict progression characteristics are identified by the node conflict density change rate, the attitude disturbance fluctuation amplitude and the spatial interference overlap degree change amount, the number of conflict events of each node in a unit time is calculated, and whether there is a trend of continuous multiple nodes with increasing conflict indicators is judged; For each link node, the conflict categories caused by different tool operation behaviors in the corresponding stage are analyzed by combining the behavior disturbance envelope area overlap degree and the time coincidence degree in the stage; based on each conflict category and the conflict progression characteristics, a safety coordination strategy is constructed, and the coordination strategy includes a personnel coordination adjustment strategy, a construction path separation strategy and a construction time period adjustment strategy. 8.A BIM-based construction project safety management system, particularly applied to the BIM-based construction project safety management method of any one of claims 1 to 7, comprising a management center, characterized in that, The management center is communicatively connected with a data acquisition module, a space modeling module, a conflict analysis module and a safety management module: The data acquisition module is used to obtain construction data of a building project, divide the construction process into step-level work procedures according to the construction data of the building project, obtain engineering feature data and construction tool data of each step-level work procedure, analyze the construction data of the building project, and construct a component space range and a multi-dimensional mapping relationship; The space modeling module is used to represent each step-level work procedure as a spatial occupation entity based on the component space range and the engineering feature data, analyze the spatial occupation entities based on the step-level work procedures, and generate a work procedure spatial occupation entity set; The conflict analysis module is used for identifying the conflict relationship between any two step-level processes based on the multi-dimensional mapping relationship and the process space occupation entity set, and generating a conflict coupling link graph; identifying the conflict enrichment paragraph and the behavior interference dense paragraph in the link based on the conflict coupling link graph, and constructing a multi-segment conflict sequence; The multi-segment conflict sequence is analyzed to construct a time evolution structure diagram; The safety management module is used for analyzing the time evolution structure diagram to generate a safety coordination strategy.

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