Parametric modeling method of fabricated shear wall BIM structure

Abstract

The application relates to the technical field of building information model construction, in particular to a parameterized modeling method of a fabricated shear wall BIM structure. The method obtains actual spatial positions, actual stresses, bottom areas, reference spatial positions and reference stresses of the fabricated shear wall; according to the included angle between each fabricated shear wall and its adjacent fabricated shear wall in each construction layer, the difference between the actual stresses and the reference stresses of the adjacent fabricated shear wall, the difference between the actual spatial positions and the reference spatial positions of the adjacent fabricated shear wall and the bottom area of the fabricated shear wall, the layer internal error degree of the construction layer is obtained; according to the layer internal error degree of each construction layer and the difference between the layer internal error degree of the lower construction layer and the layer internal error degree of the lowest construction layer, the comprehensive error degree of the construction layer is obtained to mark the high-risk construction layer. The application accurately marks the high-risk construction layer, realizes accurate identification and visualization of construction errors, and is beneficial to timely management and control of the construction errors.

Description

Technical Field

[0001] This invention relates to the field of building information modeling (BIM) technology, specifically to a parametric modeling method for prefabricated shear wall BIM structures. Background Technology

[0002] With the continuous promotion of industrialization and green development in the construction industry by the state, prefabricated buildings have become an important direction for promoting the transformation and upgrading of the construction industry due to their significant advantages such as short construction cycle, low resource consumption, low environmental pollution, and controllable project quality. Among them, prefabricated shear wall structures, as the mainstream structural form of prefabricated buildings, are widely used in residential, commercial and other building projects due to their characteristics such as high lateral stiffness, good spatial integrity and excellent seismic performance.

[0003] Currently, Building Information Modeling (BIM) technology, as a digital tool spanning the entire building lifecycle, plays a core role in prefabricated construction. BIM technology enables information sharing and collaborative work across design, production, and construction stages, effectively solving problems such as the disconnect between design and construction, and distorted component information transmission in traditional prefabricated construction. It provides key technical support for improving project management efficiency and construction accuracy, while also enabling 3D modeling and visualization of components. However, during the layer-by-layer hoisting construction of prefabricated buildings, prefabricated shear walls, as core vertical load-bearing components, are characterized by their large weight and numerous critical installation points. During construction, factors such as hoisting accuracy deviations, component self-weight deformation, and site environmental interference can easily lead to axial offset or vertical position deviations, resulting in geometric offset errors. This distorts the overall structural stress state, exacerbates stress anomalies, and in severe cases, may affect structural safety and stability, posing hidden dangers to project quality. Existing BIM technology cannot accurately quantify and assess comprehensive errors to mark high-risk areas, failing to meet the high requirements for construction accuracy and safety control in prefabricated shear wall structures. Summary of the Invention

[0004] To address the technical problem that existing BIM technologies cannot accurately quantify and assess comprehensive errors for marking high-risk areas, the present invention aims to provide a parametric modeling method for prefabricated shear wall BIM structures. The specific technical solution adopted is as follows:

[0005] This invention provides a parametric modeling method for prefabricated shear wall BIM structures, the method comprising the following steps:

[0006] Obtain the actual spatial location, actual stress, and bottom area of ​​each prefabricated shear wall in each construction layer, as well as the reference spatial location and reference stress in the BIM design model;

[0007] The degree of intra-layer error for each construction layer is obtained based on the angle between each prefabricated shear wall and its adjacent prefabricated shear wall in each construction layer, the difference between the actual stress and the reference stress of each adjacent prefabricated shear wall, the difference between its actual spatial position and the reference spatial position, and the size of its bottom area.

[0008] The comprehensive error level of each construction layer is obtained based on the degree of error within each construction layer, the difference in degree of error between each construction layer and the layer below it, and the difference in degree of error between each construction layer and the lowest construction layer.

[0009] High-risk construction layers in the BIM design model are marked based on the comprehensive error level.

[0010] Furthermore, the method for obtaining the degree of intra-layer error is as follows:

[0011] Based on the angle between each prefabricated shear wall and its adjacent prefabricated shear wall in each construction layer, and the difference between the actual stress and the reference stress of each adjacent prefabricated shear wall, the stress influence degree of each prefabricated shear wall in each construction layer is obtained.

[0012] Based on the difference between the actual spatial position and the reference spatial position of each prefabricated shear wall in each construction layer, as well as the size of its bottom area, the degree of geometric influence of each prefabricated shear wall in each construction layer is obtained.

[0013] The sum of the products of the stress influence and geometric influence of each prefabricated shear wall in each construction layer is used as the intra-layer error of each construction layer.

[0014] Furthermore, the method for obtaining the degree of stress influence is as follows:

[0015] For any prefabricated shear wall in any construction layer, the difference between the actual stress and the reference stress of the prefabricated shear wall is taken as the stress deviation value of the prefabricated shear wall.

[0016] All prefabricated shear walls adjacent to this prefabricated shear wall in this construction layer shall be regarded as reference prefabricated shear walls;

[0017] For any reference prefabricated shear wall, the degree of stress error transfer from the reference prefabricated shear wall to the prefabricated shear wall is obtained based on the stress deviation value of the reference prefabricated shear wall and the angle between the prefabricated shear wall and the reference prefabricated shear wall.

[0018] The average stress error transfer degree of all reference prefabricated shear walls to this prefabricated shear wall is taken as the stress influence degree of this prefabricated shear wall.

[0019] Furthermore, the method for obtaining the degree of stress error transfer is as follows:

[0020] The sum of the stress deviation values ​​of all prefabricated shear walls in the construction layer and the sum of the first preset constant are used as the reference characteristic value of the construction layer; wherein, the first preset constant is a positive number;

[0021] The ratio of the stress deviation value of the reference prefabricated shear wall to the reference characteristic value is taken as the degree of stress deviation of the reference prefabricated shear wall.

[0022] The product of the cosine of the angle between the prefabricated shear wall and the reference prefabricated shear wall and the stress deviation degree is taken as the stress error transfer degree of the reference prefabricated shear wall to the prefabricated shear wall.

[0023] Furthermore, the method for obtaining the degree of geometric influence is as follows:

[0024] For any prefabricated shear wall in any construction layer, obtain the Euclidean distance between the actual spatial position and the reference spatial position of the prefabricated shear wall, and use it as the geometric deviation value of the prefabricated shear wall;

[0025] The result of normalizing the ratio of the geometric deviation value to the bottom area of ​​the prefabricated shear wall is taken as the degree of geometric influence of the prefabricated shear wall.

[0026] Furthermore, the method for obtaining the degree of comprehensive error is as follows:

[0027] For any construction layer, the degree of consistency of error change of the construction layer is obtained based on the difference in the degree of intra-layer error between the construction layer and the construction layer below it, and the difference in the degree of intra-layer error between the construction layer and the lowest construction layer.

[0028] The product of the positive correlation between the degree of consistency of error variation of the construction layer and the degree of intra-layer error of the construction layer is normalized and used as the comprehensive error degree of the construction layer.

[0029] Furthermore, the method for obtaining the consistency of the error variation is as follows:

[0030] The difference in the degree of intralayer error between the construction layer and the construction layer below it is taken as the first difference.

[0031] The difference in the degree of intra-layer error between the construction layer and the lowest construction layer is used as the second difference.

[0032] The sum of the second difference and the second preset constant is taken as the second result; wherein the second preset constant is a positive number.

[0033] The ratio of the first difference to the second result is taken as the degree of consistency of the error variation of the construction layer.

[0034] Furthermore, the method for marking high-risk construction layers in the BIM design model based on the comprehensive error level is as follows:

[0035] When the overall error level exceeds the preset overall error level threshold, the corresponding construction layer in the BIM design model will be marked as a high-risk construction layer.

[0036] Furthermore, the method for obtaining the actual spatial position and the reference spatial position is as follows:

[0037] For any prefabricated shear wall, the average coordinates of all corner points of the actual position of the prefabricated shear wall are taken as the actual spatial position of the prefabricated shear wall;

[0038] The average coordinates of all corner points in the BIM design model of the prefabricated shear wall are used as the reference spatial location of the prefabricated shear wall.

[0039] Furthermore, the parametric modeling method for the prefabricated shear wall BIM structure is as follows:

[0040] The calculation of the overall error level and the logic of marking high-risk construction layers are integrated into the BIM software to realize parametric modeling of prefabricated shear wall BIM structures.

[0041] The present invention has the following beneficial effects:

[0042] This invention first determines the intra-layer error level of each construction layer based on the angle between each prefabricated shear wall and its adjacent prefabricated shear walls, the difference between the actual and reference stresses of each adjacent prefabricated shear wall, the difference between its actual and reference spatial positions, and the size of its base area. This accurately reflects the error situation of the prefabricated shear walls within each construction layer. Considering that error propagation also exists between construction layers, the invention further determines the comprehensive error level of each construction layer based on its intra-layer error level, the difference in intra-layer error level with the lower construction layer, and the difference in intra-layer error level with the lowest construction layer. This accurately reflects the overall error situation of each construction layer, achieving precise control over construction errors. Precise characterization and dynamic tracking provide data support for error control. Furthermore, based on the comprehensive error level, high-risk construction layers in the BIM design model are accurately marked, quickly locating problem areas, improving communication efficiency and decision-making accuracy. This overcomes the limitation of existing BIM models that can only display design status and cannot correlate construction errors, enabling automated analysis and real-time feedback of construction errors. This allows construction teams to adjust hoisting processes, optimize connection node treatment, or develop specific correction plans based on the high-risk construction layers marked in the model, reducing blind rework and resource waste. Simultaneously, by controlling error propagation and accumulation, the cost of subsequent structural reinforcement can be reduced, significantly improving project economics and effectively mitigating structural safety hazards caused by errors. Attached Figure Description

[0043] To more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic flowchart illustrating a parametric modeling method for a prefabricated shear wall BIM structure according to an embodiment of the present invention.

[0045] Figure 2 A flowchart illustrating a method for obtaining the degree of intra-layer error according to an embodiment of the present invention;

[0046] Figure 3 This is a structural diagram of a parametric modeling system for a prefabricated shear wall BIM structure provided in one embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of a computer device provided according to an embodiment of the present invention. Detailed Implementation

[0048] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of a parametric modeling method for prefabricated shear wall BIM structures proposed according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0050] The following description, in conjunction with the accompanying drawings, details a specific scheme for a parametric modeling method for prefabricated shear wall BIM structures provided by this invention.

[0051] Example 1:

[0052] This invention proposes a parametric modeling method for prefabricated shear wall BIM structures. Please refer to [link / reference]. Figure 1 The diagram illustrates a schematic flowchart of a parametric modeling method for prefabricated shear wall BIM structures according to an embodiment of the present invention. The method includes the following steps:

[0053] Step S1: Obtain the actual spatial location, actual stress, bottom area, and reference spatial location and reference stress of each prefabricated shear wall in each construction layer.

[0054] Specifically, to achieve parametric modeling of the prefabricated shear wall BIM structure, multi-source data needs to be collected first to prepare for subsequent data performance analysis and error quantification. Therefore, this embodiment first collects data on the spatial position of each prefabricated shear wall after its hoisting using laser scanning and a total station. To improve data accuracy, this embodiment uses the average coordinates of all corner points of each prefabricated shear wall as its actual spatial position. Then, sensors are used to monitor the stress of each prefabricated shear wall in each construction layer, focusing on collecting the maximum stress value of each prefabricated shear wall under the current construction state, which is used for subsequent analysis of stress anomalies that may be caused by installation deviations. At the same time, the design spatial position parameters of each prefabricated shear wall in each construction layer are extracted from the project's preset BIM design model. Similarly, the average coordinates of all corner points of each prefabricated shear wall are used to obtain the reference spatial position of each prefabricated shear wall in the BIM design model, preparing for subsequent analysis of the geometric offset of each prefabricated shear wall.

[0055] It should be noted that, based on the actual spatial location of each prefabricated shear wall in each construction layer that has been collected, the original BIM design model is geometrically updated to ensure that the spatial location of each prefabricated shear wall in the BIM design model is completely consistent with the actual location; then, using the updated BIM design model, the maximum stress value of each prefabricated shear wall in each construction layer under the current construction completion state is simulated and calculated, providing model benchmark data for stress deviation analysis.

[0056] In addition, the original design length and width dimensions of each prefabricated shear wall in each construction layer are obtained from the prefabricated shear wall processing plant, and the bottom area of ​​each prefabricated shear wall is accurately calculated.

[0057] Step S2: Based on the angle between each prefabricated shear wall and its adjacent prefabricated shear wall in each construction layer, the difference between the actual stress and the reference stress of each adjacent prefabricated shear wall, the difference between its actual spatial position and the reference spatial position, and the size of its bottom area, obtain the degree of intra-layer error of each construction layer.

[0058] Specifically, during the layer-by-layer hoisting construction phase of prefabricated buildings, the installation accuracy of prefabricated shear walls, as core vertical components, directly affects structural stability. During construction, factors such as hoisting techniques, the self-weight of the prefabricated shear walls, and the site environment can cause axial offset or vertical position deviation, leading to geometric displacement. Geometric displacement disrupts the original design force balance of the prefabricated shear wall, altering the pre-designed load transfer path and causing a redistribution of internal forces within and between components. This can result in localized stress concentration, and such changes in internal forces can further amplify the scope and extent of the error, creating a chain reaction of error-abnormal internal forces-expanded impact.

[0059] To accurately quantify the impact of the aforementioned chain reaction on the quality of a single construction layer, it is necessary to focus on the error transmission relationship between adjacent prefabricated shear walls within a single construction layer. The core logic is based on two key characteristics: First, adjacent prefabricated shear walls form a collaborative force-bearing system through rigid connections or grouting sleeves. When a prefabricated shear wall experiences stress anomalies due to displacement, its additional load will be transferred to adjacent walls. The more abnormal the stress of the prefabricated shear wall, the more significant the stress imbalance caused by load transfer. Second, the angle between adjacent prefabricated shear walls directly determines the load transfer efficiency. The smaller the angle (i.e., the closer the wall axes are to parallel), the smoother the force transmission path of the connecting nodes, the higher the efficiency and total amount of load transfer, and the more prominent the error transmission effect within the layer. Furthermore, when the deviation between the actual spatial position and the reference spatial position of a prefabricated shear wall is greater relative to its base area, it indicates that the positional deviation of the prefabricated shear wall is more significant, indirectly indicating a larger error in the prefabricated shear wall.

[0060] Therefore, this embodiment obtains the degree of intra-layer error for each construction layer based on the angle between each prefabricated shear wall and its adjacent prefabricated shear walls in each construction layer, the difference between the actual stress and the reference stress of each adjacent prefabricated shear wall, the difference between its actual spatial position and the reference spatial position, and the size of its bottom area. The greater the degree of intra-layer error, the more likely the installation of the prefabricated shear walls in the corresponding layer is unreasonable.

[0061] Preferably, in one feasible embodiment, the method for obtaining the intra-layer error level is described in [reference needed]. Figure 2 The document presents a flowchart of a method for obtaining the degree of intra-layer error provided in this embodiment. The method includes the following steps:

[0062] Step S201: Based on the angle between each prefabricated shear wall and its adjacent prefabricated shear wall in each construction layer, and the difference between the actual stress and the reference stress of each adjacent prefabricated shear wall, obtain the stress influence degree of each prefabricated shear wall in each construction layer.

[0063] The smaller the angle between a prefabricated shear wall and its adjacent prefabricated shear walls in a construction layer, and the greater the difference between the actual stress and the reference stress of the adjacent prefabricated shear walls, the greater the additional load on the prefabricated shear wall from its adjacent prefabricated shear walls, and the greater the impact on the stress of the prefabricated shear wall. Therefore, this embodiment obtains the stress influence degree of each prefabricated shear wall in each construction layer based on the angle between each prefabricated shear wall and its adjacent prefabricated shear walls in each construction layer, and the difference between the actual stress and the reference stress of each adjacent prefabricated shear wall. The greater the stress influence degree, the greater the error in the stress of the corresponding prefabricated shear wall.

[0064] In one possible implementation of this embodiment, the method for obtaining the degree of stress influence is as follows: For any prefabricated shear wall in any construction layer, the absolute value of the difference between the actual stress of the prefabricated shear wall and the reference stress is taken as the stress deviation value of the prefabricated shear wall; the larger the stress deviation value, the more abnormal the stress of the prefabricated shear wall; all prefabricated shear walls adjacent to the prefabricated shear wall in the construction layer are taken as reference prefabricated shear walls; for any reference prefabricated shear wall, based on the stress deviation value of the reference prefabricated shear wall and the angle between the prefabricated shear wall and the reference prefabricated shear wall, the degree of stress error transfer of the reference prefabricated shear wall to the prefabricated shear wall is obtained; the larger the degree of stress error transfer, the greater the stress influence of the reference prefabricated shear wall on the prefabricated shear wall, indirectly indicating that the stress of the prefabricated shear wall has more errors;

[0065] The method for obtaining the stress error transfer degree is as follows: The stress deviation values ​​of all prefabricated shear walls in the construction layer are summed, and the sum is then added to a first preset constant. This sum is used as the reference characteristic value of the construction layer; the first preset constant is a positive number. The ratio of the stress deviation value of the reference prefabricated shear wall to the reference characteristic value is used as the stress deviation degree of the reference prefabricated shear wall, accurately reflecting the stress anomaly of the reference prefabricated shear wall in the construction layer. In this embodiment, the first preset constant is set to 1 to avoid a reference characteristic value of 0. The implementer can set the size of the first preset constant according to the actual situation, which is not limited here. The smaller the angle between the prefabricated shear wall and the reference prefabricated shear wall, the greater the degree to which the abnormal stress of the reference prefabricated shear wall can be transferred to the prefabricated shear wall. Therefore, in this embodiment, the product of the cosine of the angle between the prefabricated shear wall and the reference prefabricated shear wall and the stress deviation degree is used as the stress error transfer degree of the reference prefabricated shear wall to the prefabricated shear wall. It should be noted that the range of the included angle is from 0° to 90°;

[0066] In order to comprehensively characterize the stress impact of the prefabricated shear wall in the construction layer, the average value of the stress error transfer degree of all reference prefabricated shear walls to this prefabricated shear wall is taken as the stress impact degree of the prefabricated shear wall.

[0067] At this point, the stress impact of each prefabricated shear wall in each construction layer is obtained.

[0068] Step S202: Based on the difference between the actual spatial position and the reference spatial position of each prefabricated shear wall in each construction layer, and the size of its bottom area, obtain the degree of geometric influence of each prefabricated shear wall in each construction layer.

[0069] The greater the difference between the actual spatial position and the reference spatial position of a prefabricated shear wall in a construction layer, and the smaller the base area of ​​the prefabricated shear wall, the more significant the positional offset of the prefabricated shear wall, indirectly indicating a greater degree of stress error in the prefabricated shear wall. Therefore, this embodiment obtains the degree of geometric influence of each prefabricated shear wall in each construction layer based on the difference between the actual spatial position and the reference spatial position of each prefabricated shear wall in each construction layer, as well as the size of its base area. The greater the degree of geometric influence, the more significant the positional offset of the prefabricated shear wall, and the greater its inherent error.

[0070] In one possible implementation of this embodiment, the method for obtaining the degree of geometric influence is as follows: For any prefabricated shear wall in any construction layer, the Euclidean distance between the actual spatial position and the reference spatial position of the prefabricated shear wall is obtained as the geometric deviation value of the prefabricated shear wall; the larger the geometric deviation value, the greater the deviation of the actual position of the prefabricated shear wall; the result of normalizing the ratio of the geometric deviation value of the prefabricated shear wall to the bottom area is taken as the degree of geometric influence of the prefabricated shear wall. In this embodiment, the ratio of the geometric deviation value to the bottom area is normalized using a norm normalization function. The method for obtaining the Euclidean distance is well-known and will not be described in detail here.

[0071] At this point, the degree of geometric influence of each prefabricated shear wall in each construction layer is obtained.

[0072] Step S203: The sum of the products of the stress influence degree and the geometric influence degree of each prefabricated shear wall in each construction layer is used as the intra-layer error degree of each construction layer.

[0073] In a given construction layer, a greater degree of stress influence and geometric influence for each prefabricated shear wall indicates a greater degree of error influence for each prefabricated shear wall, indirectly indicating a greater intra-layer error for that construction layer. Therefore, in this embodiment, for any prefabricated shear wall in any construction layer, the product of its stress influence and geometric influence is taken as the local error degree of that prefabricated shear wall; then, the sum of the local error degrees of all prefabricated shear walls in that construction layer is taken as the intra-layer error degree of that construction layer.

[0074] At this point, the degree of intra-layer error for each construction layer is obtained.

[0075] Step S3: Based on the degree of error within each construction layer, the difference in degree of error between each construction layer and the layer below it, and the difference in degree of error between each construction layer and the lowest construction layer, obtain the comprehensive error degree of each construction layer.

[0076] Specifically, during the construction of prefabricated buildings layer by layer, the inter-story error transmission of prefabricated shear walls is a key issue affecting the overall structural quality and safety. Its transmission mechanism is closely related to constraint characteristics, installation logic, and stress state. From the core causes of error transmission, prefabricated shear walls are fixed between layers through rigid connection nodes (such as bolted connections) or grouting sleeves. The core characteristics of this type of connection are strong constraint and high coordination. The lower shear wall not only serves as the supporting foundation for the upper shear wall but also provides a precise positioning benchmark for the upper shear wall through the connection nodes. When the lower shear wall experiences axial or vertical positional deviations due to construction deviations, its geometry and stress benchmarks deviate from the design standards. On the one hand, the deviation directly alters the original load transfer path of the lower shear wall, causing some loads to fail to be transmitted along the preset path, thus leading to local stress imbalance. On the other hand, when the upper shear wall is hoisted, it needs to be precisely aligned with the connection nodes of the lower installed components. The offset benchmark of the lower layer will be directly copied into the installation and positioning of the upper components, resulting in geometric offset errors in the upper shear wall from the initial stage of hoisting. This forms an inter-layer transmission chain of lower layer error → upper layer benchmark offset → new error generation.

[0077] From the perspective of the cumulative effect of error propagation, this layer-by-layer propagation of error is not a simple accumulation, but rather triggers a vicious cycle of geometric offset and abnormal stress. As the number of construction layers increases, the accumulated geometric offset in the lower layers gradually distorts the spatial orientation of the overall structure, causing the installation angle and stress interface of the upper shear walls to continuously deviate from the design state. This distortion of spatial orientation further disrupts the overall stress balance of the structure, leading to abnormal stress distribution in the upper shear walls (such as local stress concentration and stress transmission path breakage). This stress anomaly not only reduces the load-bearing capacity of the components themselves, but may also exacerbate the degree of geometric offset, forming a cumulative effect of error propagation → abnormal stress → error amplification, ultimately threatening the stability and safety of the overall structure.

[0078] Based on the aforementioned error propagation mechanism and cumulative effects, the intra-layer error level of a single construction layer cannot fully reflect the actual impact of construction errors on the overall structure. Therefore, it is necessary to incorporate the inter-layer error propagation characteristics into the evaluation system, combining intra-layer errors to obtain a comprehensive error that reflects both intra-layer errors and inter-layer propagation effects. This provides a scientific basis for accurately identifying structural risks and developing targeted control measures. Therefore, this embodiment obtains the comprehensive error level of each construction layer based on its intra-layer error level, the difference between it and the intra-layer error levels of the layers below it, and the difference between it and the lowest construction layer. The greater the comprehensive error level, the more severe the error in the corresponding construction layer, and the greater the risk.

[0079] Preferably, in one feasible way of this embodiment, the method for obtaining the comprehensive error degree is as follows: for any construction layer, based on the difference in the degree of error within the construction layer and the construction layer below it, and the difference in the degree of error within the construction layer and the lowest construction layer, the degree of consistency of error change of the construction layer is obtained; the greater the degree of consistency of error change, the stronger the error transmission capability of the construction layer, which indirectly indicates that the error of the construction layer is greater.

[0080] The method for obtaining the consistency of error change is as follows: the difference between the intra-layer error degree of the construction layer and the construction layer below it is obtained as the first difference; the essence of the first difference is the rate of change of inter-layer error corresponding to the construction layer; the larger the first difference, the faster the range or severity of the error increases when it is transmitted from the lower layer to the construction layer, that is, the lower layer error is transmitted to the construction layer with higher efficiency through rigid connection nodes or grouting sleeves. For example, when the offset error of the lower shear wall axis is large, if the error transmission efficiency is high, the offset of the installation reference of the construction layer components will be significantly greater than that in the scenario of low transmission efficiency, which will lead to a rapid increase in the error degree of the construction layer, forming a linkage effect of rapid transmission and error surge.

[0081] Further, the difference in the degree of intra-layer error between the construction layer and the lowest construction layer is obtained as the second difference. The essence of the second difference is the overall trend of the inter-layer error corresponding to the construction layer. When the first difference and the second difference have the same sign and are more equal, it indicates that the error transmission is not an isolated single inter-layer behavior, but a systematic transmission that runs through multiple floors. For example, if the overall trend of the inter-layer error is that the error continues to increase with the number of floors, and the rate of change of the inter-layer error corresponding to the construction layer also shows an increasing trend, it indicates that the construction layer not only bears the error of the lower layer, but also further transmits the error to the upper layer, forming a transmission mode of layer-by-layer accumulation and overall amplification. Conversely, when the first difference and the second difference have different signs and are more unequal, it indicates that there may be error offsetting factors (such as construction correction) in the construction layer, which weakens the systematic nature of error transmission and indirectly reflects that the error in the construction layer may be smaller.

[0082] Therefore, in this embodiment, the sum of the second difference and the second preset constant is taken as the second result; wherein the second preset constant is a positive number; the ratio of the first difference to the second result is taken as the degree of consistency of the error change of the construction layer. In this embodiment, the second preset constant is set to 1 to avoid the second result being 0. The implementer can set the size of the second preset constant according to the actual situation, and it is not limited here.

[0083] To comprehensively characterize the errors present in the construction layer, the product of the positive correlation between the consistency of error changes in the construction layer and the intra-layer error level is normalized and used as the overall error level of the construction layer. In this embodiment, the consistency of error changes is treated as the power of an exponential function with the natural constant as the base. The output of this exponential function is the positive correlation between the consistency of error changes. The product of the positive correlation between the consistency of error changes in the construction layer and the intra-layer error level is then normalized using a normalization function.

[0084] At this point, the overall error level of each construction layer under the current construction completion status is obtained.

[0085] Step S4: Mark high-risk construction layers in the BIM design model based on the comprehensive error level.

[0086] It is known that the greater the degree of comprehensive error, the greater the risk of the corresponding construction layer. Therefore, this embodiment marks the high-risk construction layer in the BIM design model based on the degree of comprehensive error. First, a preset comprehensive error threshold of 0.7 is set. Implementers can set the size of the preset comprehensive error threshold according to the actual situation, which is not limited here. When the overall error exceeds a preset threshold, the corresponding construction layer in the BIM design model is marked as a high-risk construction layer. Simultaneously, the local error level of each prefabricated shear wall within each high-risk construction layer is marked, facilitating verification by staff and enabling timely measures to control further error deterioration. Finally, the calculation of the overall error level and the logic for marking high-risk construction layers are integrated into the BIM software, achieving parametric modeling of the prefabricated shear wall BIM structure. This effectively solves the limitation of existing BIM models, which can only display the design status and cannot correlate construction errors. It enables automated analysis and real-time feedback of construction errors. Based on the high-risk construction layers marked in the model, the construction team can adjust hoisting techniques, optimize connection node treatment, or develop specific correction plans, reducing blind rework and resource waste. Furthermore, by controlling error propagation and accumulation, the cost of subsequent structural reinforcement can be reduced, significantly improving the project's economic efficiency.

[0087] In summary, this embodiment obtains the actual spatial location, actual stress, bottom area, and reference spatial location and reference stress of the prefabricated shear wall. Based on the angle between each prefabricated shear wall and its adjacent prefabricated shear walls in each construction layer, the difference between the actual stress and reference stress of its adjacent prefabricated shear walls, the difference between its actual spatial location and reference spatial location, and its bottom area, the intra-layer error degree of the construction layer is obtained. Based on the intra-layer error degree of each construction layer, its difference from the intra-layer error degree of the construction layer below it, and its difference from the intra-layer error degree of the lowest construction layer, the comprehensive error degree of the construction layer is obtained to mark high-risk construction layers. This invention, by accurately marking high-risk construction layers, achieves precise identification and visualization of construction errors, which is beneficial for timely control of construction errors.

[0088] Example 2:

[0089] This invention also proposes a parametric modeling system for prefabricated shear wall BIM structures; please refer to [link / reference]. Figure 3 The diagram shows a parametric modeling system for a prefabricated shear wall BIM structure according to an embodiment of the present invention. The system includes: a data acquisition module 10, an intra-layer error degree acquisition module 20, a comprehensive error degree acquisition module 30, and a data processing module 40.

[0090] The data acquisition module 10 is used to acquire the actual spatial location, actual stress, bottom area, and reference spatial location and reference stress of each prefabricated shear wall in each construction layer.

[0091] The module 20 for obtaining the degree of error within a construction layer is used to obtain the degree of error within a construction layer based on the angle between each prefabricated shear wall and its adjacent prefabricated shear walls in each construction layer, the difference between the actual stress and the reference stress of each adjacent prefabricated shear wall, the difference between its actual spatial position and the reference spatial position, and the size of its bottom area.

[0092] The comprehensive error degree acquisition module 30 is used to acquire the comprehensive error degree of each construction layer based on the intra-layer error degree of each construction layer, the difference in intra-layer error degree between each construction layer and the lower construction layer, and the difference in intra-layer error degree between each construction layer and the lowest construction layer.

[0093] Data processing module 40 marks high-risk construction layers in the BIM design model based on the comprehensive error level.

[0094] It should be noted that the system provided in the above embodiments is only an example of the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the computer equipment can be divided into different functional modules to complete all or part of the functions described above. In addition, the parametric modeling system for prefabricated shear wall BIM structures and the parametric modeling method for prefabricated shear wall BIM structures provided in the above embodiments belong to the same concept. The specific implementation process is detailed in the method embodiments and will not be repeated here.

[0095] Example 3:

[0096] This invention also proposes a parametric modeling device for prefabricated shear wall BIM structures. The device includes a memory and a processor. The memory stores executable program code, and the processor calls and executes the executable program code to perform a parametric modeling method for prefabricated shear wall BIM structures provided in the embodiments of this application. Specifically, the device may be a chip, component, or module. The chip may include a connected processor and memory; the memory stores instructions, and when the processor calls and executes the instructions, the chip can perform the parametric modeling method for prefabricated shear wall BIM structures provided in the above embodiments.

[0097] Furthermore, this application also protects a computer device; please refer to [link to relevant documentation]. Figure 4 The computer device includes a memory 401, a processor 402, and a computer program 403 stored in the memory 401 and running on the processor 402. When the processor 402 executes the computer program 403, the computer device can execute any of the parametric modeling methods for prefabricated shear wall BIM structures described above.

[0098] Example 4:

[0099] This embodiment also provides a computer-readable storage medium storing computer program code. When the computer program code is run on a computer, the computer executes the above-described related method steps to implement the parametric modeling method for prefabricated shear wall BIM structures provided in the above embodiment.

[0100] Example 5:

[0101] This embodiment also provides a computer program product. When the computer program product is run on a computer, it causes the computer to perform the above-mentioned related steps to realize the parametric modeling method for prefabricated shear wall BIM structures provided in the above embodiment.

[0102] In this embodiment, the device, computer-readable storage medium, computer program product, or chip are all used to execute the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0103] It should be noted that the order of the above embodiments of the present invention is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. The processes depicted in the accompanying drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0104] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

Claims

1. A parametric modeling method of fabricated shear wall BIM structure, characterized in that, The method comprises the following steps: Obtaining the actual spatial position, actual stress, base area of each fabricated shear wall in each construction layer, and the reference spatial position and reference stress in the BIM design model; According to the included angle of each fabricated shear wall in each construction layer and its adjacent fabricated shear wall, the difference between the actual stress and the reference stress of each adjacent fabricated shear wall thereof, the difference between the actual spatial position and the reference spatial position thereof, and the size of the base area thereof, obtaining the in-layer error degree of each construction layer; According to the in-layer error degree of each construction layer and the difference between the in-layer error degree of the lower construction layer and the in-layer error degree of the lowest construction layer, obtaining the comprehensive error degree of each construction layer; Based on the comprehensive error degree, marking the high-risk construction layer in the BIM design model; The method for obtaining the comprehensive error degree is: For any construction layer, according to the difference between the in-layer error degree of the construction layer and the in-layer error degree of the lower construction layer, and the difference between the in-layer error degree of the construction layer and the in-layer error degree of the lowest construction layer, obtaining the error change consistency degree of the construction layer; The product of the positive correlation result of the error change consistency degree of the construction layer and the in-layer error degree of the construction layer is normalized as the comprehensive error degree of the construction layer; The method for obtaining the error change consistency degree is: Obtaining the difference between the in-layer error degree of the construction layer and the in-layer error degree of the lower construction layer as a first difference; Obtaining the difference between the in-layer error degree of the construction layer and the in-layer error degree of the lowest construction layer as a second difference; The sum of the second difference and a second preset constant is taken as a second result; wherein the second preset constant is a positive number; The ratio of the first difference and the second result is taken as the error change consistency degree of the construction layer.

2. The method of claim 1, wherein, The method for obtaining the in-layer error degree is: According to the included angle of each fabricated shear wall in each construction layer and its adjacent fabricated shear wall, the difference between the actual stress and the reference stress of each adjacent fabricated shear wall thereof, obtaining the stress influence degree of each fabricated shear wall in each construction layer; According to the difference between the actual spatial position and the reference spatial position of each fabricated shear wall in each construction layer, and the size of the base area thereof, obtaining the geometric influence degree of each fabricated shear wall in each construction layer; The product of the stress influence degree and the geometric influence degree of each fabricated shear wall in each construction layer is accumulated as the in-layer error degree of each construction layer.

3. The method of claim 2, wherein, The method for obtaining the stress influence degree is: For any fabricated shear wall in any construction layer, the difference between the actual stress and the reference stress of the fabricated shear wall is taken as the stress deviation value of the fabricated shear wall; The fabricated shear walls adjacent to the fabricated shear wall in the construction layer are all taken as reference fabricated shear walls; For any reference fabricated shear wall, according to the stress deviation value of the reference fabricated shear wall and the included angle between the fabricated shear wall and the reference fabricated shear wall, obtaining the stress error transfer degree of the reference fabricated shear wall to the fabricated shear wall; The average of the stress error transfer degrees of all reference fabricated shear walls to the fabricated shear wall is taken as the stress influence degree of the fabricated shear wall.

4. The method of claim 3, wherein, The method for obtaining the stress error transfer degree is: The sum of the stress deviation values of all the fabricated shear walls in the construction layer is added to the first preset constant, and the result is taken as the reference characteristic value of the construction layer; the first preset constant is a positive number; The ratio of the stress deviation value of the reference fabricated shear wall to the reference characteristic value is taken as the stress deviation degree of the reference fabricated shear wall; The product of the cosine value of the included angle between the fabricated shear wall and the reference fabricated shear wall and the stress deviation degree is taken as the stress error transfer degree of the reference fabricated shear wall to the fabricated shear wall.

5. The method of claim 2, wherein, The method for obtaining the geometric influence degree is: For any fabricated shear wall in any construction layer, the Euclidean distance between the actual spatial position and the reference spatial position of the fabricated shear wall is obtained as the geometric deviation value of the fabricated shear wall; The result of normalizing the ratio of the geometric deviation value of the fabricated shear wall to the base area is taken as the geometric influence degree of the fabricated shear wall.

6. The method of claim 1, wherein, The method for marking the high-risk construction layer in the BIM design model based on the comprehensive error degree is: When the comprehensive error degree is greater than the preset comprehensive error degree threshold, the corresponding construction layer in the BIM design model is marked as a high-risk construction layer.

7. The method of claim 1, wherein, The method for obtaining the actual spatial position and the reference spatial position is: For any fabricated shear wall, the mean coordinate of all the corner point coordinates of the actual position of the fabricated shear wall is taken as the actual spatial position of the fabricated shear wall; The mean coordinate of all the corner point coordinates of the fabricated shear wall in the BIM design model is taken as the reference spatial position of the fabricated shear wall.

8. The method of claim 1, wherein, The parameterized modeling method of the fabricated shear wall BIM structure is: The logic of calculating the comprehensive error degree and marking the high-risk construction layer is integrated into the BIM software to realize the parameterized modeling of the fabricated shear wall BIM structure.

Images